Abstract:
This assignment was used to design a mud and preparing mud for a well having a depth of 10000ft and each depth consist of different pore pressure gradient and fracture gradient. It was important to take in consider the safety margins and the kick margins by adding to the pore pressure gradient 0.5ppg and subtracting from fracture pressure 0.5ppg as shown in table (1). Then it has been drew the mud window to create a proper mud to solve the issue in this assignment and become safer. Since there are two muds needed to be prepared for a well having a depth of 10000ft and each with different density, it is important to measure the amount of barite required in order to increase the density to the target wanted. has been created the mud with 10.9 ppg, after creating the mud for this density will be testing all the classification for this test and if it is goof or no. The temperature for this mud was 28.7C and the density has been measured as well which was 10.95 and the ph was 8. In addition, has been measured the viscosity at different speed by using viscometers the speed was at 5,6,100,200,300, and 600 rpm the results shows in table 3. Then it has been measured the gel strength at 10s and 10 mins which was 30, and 31ib.100ft2 respectively, then it has been calculated the plastic viscosity, apparent viscosity, and yield point by the equation given above, and the results mentioned in table 3. Lastly has been measure the filtrate volume for 5,10, 15,20,15 and 30mins the total volume which was at 30 mins with result about 16.5cc. then it has been measured the mud cake thickness for this type of mud which was 3.23mm. it was given some of the errors that faced while drilling a well, those problems were loss circulation, high and innovation and the stuck pipe. in the first step it has been designed the sample mud that required to use at the surface, while the pressure of the well increase it should increase the density of the mud to balance between the hydrostatic pressure with the formation pressure, so it has been increased the density of the mud by using the barite, the mud was 10, and 14ppg.
ABSTRACT
This experiment examined the effect of mud thinner on drilling fluid density and viscosity. The function of mud thinner is to control and reduce the apparent density of the mud by calculate the amount of water that needed to decrease the density. The experiment was conducted by using one basic mud as the comparison for second experiment that has 10.7ppg mud density, then it uses mud thinner to achieve the exact mud density that required in this experiment which is 10.2ppg. Also, this experiment was undertaken with the purpose of decrease the density of the drilling fluid as well as to measure the properties of the drilling fluids and compare it with the last experiment. In general, to proceed with the experiment in order to achieve the goals mentioned, a range of instruments were selected such Mud mixer, Mud balance, Thermometer, Remoter, Filter press, Graduated cylinder, pH meter / pH paper, Aging cell, Rotating oven and litter cup, Viscometer and Venire calliper. All these materials were used in order to understand the reasons why the mud varies and to know with precision the different properties that the fluids have. overall, at this experiment was conducted by using Bentonite, Barite and soda ash mixed with water to control the density of the mud.
Abstract
The aim of this experiment is to study the properties of loss control additives and its effect towards mud properties and to test what different additives do to the behaviour of drilling mud in terms of mud cake formation and filtrate loss. Guar gum has been used extensively in the oil industry as a viscosity for different applications due to its unique rheological properties. In this paper, we explore how the rheological behaviour of guar-based fluids can be used to control fluid loss. a range of instruments were used such Mud mixer, Mud balance, Thermometer, Remoter, Filter press, Graduated cylinder, pH meter / pH paper, Aging cell, Rotating oven and litter cup, Viscometer and Venire calliper. All these materials were used in order to understand the reasons why the mud varies and to know with precision the different properties that the fluids have. overall, at this experiment was conducted by using Bentonite of 15g, soda ash of 0.2g and guar gum of 0.3g mixed with water of 350ml to control the fluid loss of the mud. After that compare the results of experiment 1 with experiment 4.
Viscosity and yield point exp. by jarjis
Experiment Number 5: Yield Point.
Koya University.
Faculty of Engineering.
Drilling Lab
Supervised By Muhammad Jamal
Determine Plastic Viscosity, Apparent Viscosity, And Yield point of a drilling fluid (mud) by using Fann VG viscometer.
=============
This a report about Filtration. written by Jarjis Muhammad, Petroleum Engineering Dep. Koya University. For more Information please contact me: www.facebook.com/Jarjis.shaqlawaee
This experiment will explain a procedure to get drilling mud with a range of density that requires for maintaining the borehole pressure as drilling goes dipper, the objective is generating a drilling mud; then it requires to rise the density by 0.1ppg and getting a drilling mud that is more dens.
1. The experiment aimed to dilute a drilling mud from 8.65 ppg to 8.45 ppg by adding 666.66 cc of water incrementally and measuring the mud weight each time.
2. Errors in the experiment likely contributed to the measured mud density being 8.45 ppg instead of the target 8.5 ppg, including impurities in the water, inaccurate measurements, and bentonite losses during mixing and weighing.
3. Proper dilution of drilling mud is important to avoid issues like lost circulation, formation damage, decreased rate of penetration, and poor hole cleaning during drilling operations.
Lab 1 measurement of density of drilling mud samples using mud balance.Awais Qureshi
This document describes an experiment to measure the density of drilling mud samples using a mud balance. It explains that a mud balance works by placing a sample in a cup attached to an arm that can be leveled using a sliding weight. The position of the weight indicates the density. It then gives background on key components of drilling mud - bentonite for its thixotropic properties, and barite to increase density. The procedure, apparatus, calibration process, observations and safety precautions are outlined. The goal is to find the density and specific gravity of samples containing barite and water or salt and water.
This document summarizes a student's fluid mechanics lab experiment on measuring mud density. The aim was to learn how to use a mud balance apparatus to measure the density of drilling mud and see how density changes with the addition of barite. The student first prepared a bentonite mud and measured its density. Barite was then added to increase the mud density, which was remeasured. Understanding mud density is important for maintaining proper hydrostatic pressure to prevent fluid influx from formations during drilling.
The document describes a mud weighting experiment where barite was added to bentonite mud to increase its density. Barite is commonly used to weight muds because it is inexpensive, readily available, and chemically inert, allowing mud weights to reach 20 ppg. The experiment involved preparing bentonite mud, measuring its initial density, then adding 117.6g of barite and measuring the final density. Some potential sources of error included barite powder being lost or sticking to surfaces during mixing and imprecise electronic balance measurements.
ABSTRACT
This experiment examined the effect of mud thinner on drilling fluid density and viscosity. The function of mud thinner is to control and reduce the apparent density of the mud by calculate the amount of water that needed to decrease the density. The experiment was conducted by using one basic mud as the comparison for second experiment that has 10.7ppg mud density, then it uses mud thinner to achieve the exact mud density that required in this experiment which is 10.2ppg. Also, this experiment was undertaken with the purpose of decrease the density of the drilling fluid as well as to measure the properties of the drilling fluids and compare it with the last experiment. In general, to proceed with the experiment in order to achieve the goals mentioned, a range of instruments were selected such Mud mixer, Mud balance, Thermometer, Remoter, Filter press, Graduated cylinder, pH meter / pH paper, Aging cell, Rotating oven and litter cup, Viscometer and Venire calliper. All these materials were used in order to understand the reasons why the mud varies and to know with precision the different properties that the fluids have. overall, at this experiment was conducted by using Bentonite, Barite and soda ash mixed with water to control the density of the mud.
Abstract
The aim of this experiment is to study the properties of loss control additives and its effect towards mud properties and to test what different additives do to the behaviour of drilling mud in terms of mud cake formation and filtrate loss. Guar gum has been used extensively in the oil industry as a viscosity for different applications due to its unique rheological properties. In this paper, we explore how the rheological behaviour of guar-based fluids can be used to control fluid loss. a range of instruments were used such Mud mixer, Mud balance, Thermometer, Remoter, Filter press, Graduated cylinder, pH meter / pH paper, Aging cell, Rotating oven and litter cup, Viscometer and Venire calliper. All these materials were used in order to understand the reasons why the mud varies and to know with precision the different properties that the fluids have. overall, at this experiment was conducted by using Bentonite of 15g, soda ash of 0.2g and guar gum of 0.3g mixed with water of 350ml to control the fluid loss of the mud. After that compare the results of experiment 1 with experiment 4.
Viscosity and yield point exp. by jarjis
Experiment Number 5: Yield Point.
Koya University.
Faculty of Engineering.
Drilling Lab
Supervised By Muhammad Jamal
Determine Plastic Viscosity, Apparent Viscosity, And Yield point of a drilling fluid (mud) by using Fann VG viscometer.
=============
This a report about Filtration. written by Jarjis Muhammad, Petroleum Engineering Dep. Koya University. For more Information please contact me: www.facebook.com/Jarjis.shaqlawaee
This experiment will explain a procedure to get drilling mud with a range of density that requires for maintaining the borehole pressure as drilling goes dipper, the objective is generating a drilling mud; then it requires to rise the density by 0.1ppg and getting a drilling mud that is more dens.
1. The experiment aimed to dilute a drilling mud from 8.65 ppg to 8.45 ppg by adding 666.66 cc of water incrementally and measuring the mud weight each time.
2. Errors in the experiment likely contributed to the measured mud density being 8.45 ppg instead of the target 8.5 ppg, including impurities in the water, inaccurate measurements, and bentonite losses during mixing and weighing.
3. Proper dilution of drilling mud is important to avoid issues like lost circulation, formation damage, decreased rate of penetration, and poor hole cleaning during drilling operations.
Lab 1 measurement of density of drilling mud samples using mud balance.Awais Qureshi
This document describes an experiment to measure the density of drilling mud samples using a mud balance. It explains that a mud balance works by placing a sample in a cup attached to an arm that can be leveled using a sliding weight. The position of the weight indicates the density. It then gives background on key components of drilling mud - bentonite for its thixotropic properties, and barite to increase density. The procedure, apparatus, calibration process, observations and safety precautions are outlined. The goal is to find the density and specific gravity of samples containing barite and water or salt and water.
This document summarizes a student's fluid mechanics lab experiment on measuring mud density. The aim was to learn how to use a mud balance apparatus to measure the density of drilling mud and see how density changes with the addition of barite. The student first prepared a bentonite mud and measured its density. Barite was then added to increase the mud density, which was remeasured. Understanding mud density is important for maintaining proper hydrostatic pressure to prevent fluid influx from formations during drilling.
The document describes a mud weighting experiment where barite was added to bentonite mud to increase its density. Barite is commonly used to weight muds because it is inexpensive, readily available, and chemically inert, allowing mud weights to reach 20 ppg. The experiment involved preparing bentonite mud, measuring its initial density, then adding 117.6g of barite and measuring the final density. Some potential sources of error included barite powder being lost or sticking to surfaces during mixing and imprecise electronic balance measurements.
Rheology model 900 viscometer Mud Engineering Exp.Jarjis Mohammed
Rheology model 900 viscometer by jarjis
Experiment Number 7: Rheological Properties using Model 900 Viscometer.
Koya University.
Faculty of Engineering.
Drilling Lab
Supervised By Muhammad Jamal
=============
This a report about Rheological Properties using Model 900 Viscometer.. written by Jarjis Muhammad, Petroleum Engineering Dep. Koya University. For more Information please contact me: www.facebook.com/Jarjis.shaqlawaee
Lab 2 preparation of drilling mud of desired density.Awais Qureshi
This document describes an experiment to prepare a drilling mud with a density of 11 pounds per gallon (ppg) using barite and fresh water. It provides the objectives, materials, theory, and procedure. The key steps are to calculate the weight of barite needed using a density equation, mix the barite and water, measure the mud density with a mud balance, and ensure it is 11 ppg. Precautions like cleaning equipment and eliminating bubbles are also outlined.
This a report about Marsh Funnel. written by Jarjis Muhammad, Petroleum Engineering Dep. Koya University. For more Information please contact me: www.facebook.com/Jarjis.shaqlawaee
1. The experiment aimed to prepare a mud with a known density and then increase its density by adding barite. Barite has a high specific gravity of 4.2, which allows mud density to be increased up to 21 pounds per gallon.
2. Procedures involved mixing bentonite and water to form a mud, then weighing and adding barite while stirring. The mud balance measured the initial and final mud densities.
3. Barite is the most common weighting agent due to its ability to significantly increase mud density up to 21 ppg, control formation pressures, and stability. It is also inert, readily available, and not classified as hazardous.
This document describes an experiment to create drilling mud with different densities by diluting an initial mud sample. The experiment aims to lower the density of an initial mud sample from 8.8 ppg to 8.7 ppg by adding a calculated volume of water. The procedure involves creating an initial mud sample, measuring its density, adding a calculated volume of water, and measuring the density of the diluted mud. The results show errors in the final densities compared to the targets, likely due to inaccuracies in measuring or adding the water volumes. The document concludes that performing these types of experiments helps students learn how to create and dilute drilling muds as required for different well conditions.
1-To calculate plastic viscosity of the mud .
2-To calculate yield point.
Viscometer or rheometer is a device used to measure the viscosity and yield point of mud, A sample of mud is placed in a slurry cup and rotation of a sleeve in the mud.
This document summarizes a lab experiment on determining the pH of drilling mud using a pH meter. The objectives were to measure the hydrogen ion concentration in mud. The theory section explains that pH indicates acidity or alkalinity and is important for mud properties. The procedure describes calibrating the pH meter in distilled water and then taking measurements of the mud sample. However, no calculations or results are shown. The discussion notes several points like the effect of temperature on pH readings and the importance of fully stabilizing the pH meter reading.
1. This document describes an experiment to test mud weight and density. The aim is to understand how to use a mud balance apparatus and how density changes when barite is added to water.
2. The procedure involves calibrating the mud balance with water, mixing bentonite mud, measuring its density, adding barite, and remeasuring density. Calculations are shown for determining mud component volumes and weights.
3. Results found the initial bentonite mud density was incorrect due to poor mixing. Adding barite increased density as expected to control hydrostatic pressure and prevent fluid influx from formations. Limitations like dirty equipment and inexperienced users could impact results.
This document describes an experiment to determine and prepare mud with a specific density using a mud balance. It aims to understand how to use a mud balance, how density changes with added barite, and how to recalculate densities. The procedure involves filling and weighing the cup on the balance to measure the mud's density in pounds per gallon. Factors like temperature, impurities, and mud/equipment quality can impact results. Mud density is important for functions like cutting transport, pressure control and preventing formation damage during drilling.
The document describes an experiment to measure the funnel viscosity of a drilling fluid sample using a Marsh funnel viscometer. The Marsh funnel viscometer measures the time required for a certain volume of fluid to pass through the funnel, providing a measure of viscosity. The experiment involves preparing a drilling fluid sample, calibrating the Marsh funnel with fresh water, then measuring the time for 946cc of the sample to pass through the funnel. The funnel viscosity measurement provides an indication of changes in the drilling fluid viscosity over time, though it does not directly measure the true fluid viscosity. Potential sources of error during the experiment are also discussed.
1. This experiment aims to find the properties of plastic viscosity, apparent viscosity and yield point of drilling mud using a Fann V-G viscometer.
2. A Fann viscometer measures the rheology of drilling mud by applying forces between a central bob and outer rotating sleeve to determine viscosity parameters.
3. The experiment involves preparing a bentonite mud sample, loading it into the Fann viscometer, and taking readings at different RPMs to calculate viscosity values.
Gel Strength Exp. Drilling Engineering, Mud Lab, Exp.Jarjis Mohammed
Gel Strength by jarjis
Experiment Number 6: Gel Strength.
Koya University.
Faculty of Engineering.
Drilling Lab
Supervised By Muhammad Jamal
=============
This a report about Gel Strength. written by Jarjis Muhammad, Petroleum Engineering Dep. Koya University. For more Information please contact me: www.facebook.com/Jarjis.shaqlawaee
This experiment aimed to determine the filtration rate of mud under 90-100 psi pressure using a standard API filter press. Mud was prepared using water and bentonite and tested in the filter press, which applied pressure for 30 minutes. The mud formed a 4 mm thick cake and 18.7 cc of filtrate was collected. Temperature affects viscosity and filtration rate, so should be reported. The experiment showed how mud cake thickness and filtrate volume can be measured under controlled pressure and temperature using a filter press.
1. The aim of the experiment was to reduce the mud's density through dilution by adding water. This reduces the hydrostatic pressure.
2. Procedures involved mixing bentonite and water to create mud, then adding additional water to dilute the mud. Density measurements before and after dilution showed a reduction from 8.58 ppg to 8.45 ppg.
3. Mud dilution with fresh water is not effective for field drilling or acceptable for drilling shale formations, as fresh water can damage shale through swelling. Other methods like adding bentonite or barite are required to control mud density and pressures.
Casting process and moulding process file for trainning report complet trainn...chourasiya12345
The document provides information about sand casting and sand testing methods used in casting industries. It discusses the basic sand casting process which involves creating a mold from sand, pouring molten metal, and allowing it to solidify. It then describes various tests conducted on molds sands to evaluate properties like moisture content, clay content, grain size, permeability, and strength. These sand tests help control mold sand composition and ensure required properties are achieved.
1. The document discusses a study on the effect of contamination on water-based drilling mud. Salt (NaCl) was added to fresh water mud at 0.1% to study its effects.
2. Testing found that adding NaCl increased the mud density to 9.08 ppg and maintained a pH of 8. Filtrate volume was measured at 22 cc after 30 minutes. Mud cake thickness was recorded as 3.42 mm.
3. The plastic viscosity was 6 cP, apparent viscosity was 20 cP, and yield point was 28 lb/100ft2. Gel strengths were 30 lb/100ft2 at 10 seconds and 31 lb/100ft2 at 10 minutes.
Rheology model 900 viscometer Mud Engineering Exp.Jarjis Mohammed
Rheology model 900 viscometer by jarjis
Experiment Number 7: Rheological Properties using Model 900 Viscometer.
Koya University.
Faculty of Engineering.
Drilling Lab
Supervised By Muhammad Jamal
=============
This a report about Rheological Properties using Model 900 Viscometer.. written by Jarjis Muhammad, Petroleum Engineering Dep. Koya University. For more Information please contact me: www.facebook.com/Jarjis.shaqlawaee
Lab 2 preparation of drilling mud of desired density.Awais Qureshi
This document describes an experiment to prepare a drilling mud with a density of 11 pounds per gallon (ppg) using barite and fresh water. It provides the objectives, materials, theory, and procedure. The key steps are to calculate the weight of barite needed using a density equation, mix the barite and water, measure the mud density with a mud balance, and ensure it is 11 ppg. Precautions like cleaning equipment and eliminating bubbles are also outlined.
This a report about Marsh Funnel. written by Jarjis Muhammad, Petroleum Engineering Dep. Koya University. For more Information please contact me: www.facebook.com/Jarjis.shaqlawaee
1. The experiment aimed to prepare a mud with a known density and then increase its density by adding barite. Barite has a high specific gravity of 4.2, which allows mud density to be increased up to 21 pounds per gallon.
2. Procedures involved mixing bentonite and water to form a mud, then weighing and adding barite while stirring. The mud balance measured the initial and final mud densities.
3. Barite is the most common weighting agent due to its ability to significantly increase mud density up to 21 ppg, control formation pressures, and stability. It is also inert, readily available, and not classified as hazardous.
This document describes an experiment to create drilling mud with different densities by diluting an initial mud sample. The experiment aims to lower the density of an initial mud sample from 8.8 ppg to 8.7 ppg by adding a calculated volume of water. The procedure involves creating an initial mud sample, measuring its density, adding a calculated volume of water, and measuring the density of the diluted mud. The results show errors in the final densities compared to the targets, likely due to inaccuracies in measuring or adding the water volumes. The document concludes that performing these types of experiments helps students learn how to create and dilute drilling muds as required for different well conditions.
1-To calculate plastic viscosity of the mud .
2-To calculate yield point.
Viscometer or rheometer is a device used to measure the viscosity and yield point of mud, A sample of mud is placed in a slurry cup and rotation of a sleeve in the mud.
This document summarizes a lab experiment on determining the pH of drilling mud using a pH meter. The objectives were to measure the hydrogen ion concentration in mud. The theory section explains that pH indicates acidity or alkalinity and is important for mud properties. The procedure describes calibrating the pH meter in distilled water and then taking measurements of the mud sample. However, no calculations or results are shown. The discussion notes several points like the effect of temperature on pH readings and the importance of fully stabilizing the pH meter reading.
1. This document describes an experiment to test mud weight and density. The aim is to understand how to use a mud balance apparatus and how density changes when barite is added to water.
2. The procedure involves calibrating the mud balance with water, mixing bentonite mud, measuring its density, adding barite, and remeasuring density. Calculations are shown for determining mud component volumes and weights.
3. Results found the initial bentonite mud density was incorrect due to poor mixing. Adding barite increased density as expected to control hydrostatic pressure and prevent fluid influx from formations. Limitations like dirty equipment and inexperienced users could impact results.
This document describes an experiment to determine and prepare mud with a specific density using a mud balance. It aims to understand how to use a mud balance, how density changes with added barite, and how to recalculate densities. The procedure involves filling and weighing the cup on the balance to measure the mud's density in pounds per gallon. Factors like temperature, impurities, and mud/equipment quality can impact results. Mud density is important for functions like cutting transport, pressure control and preventing formation damage during drilling.
The document describes an experiment to measure the funnel viscosity of a drilling fluid sample using a Marsh funnel viscometer. The Marsh funnel viscometer measures the time required for a certain volume of fluid to pass through the funnel, providing a measure of viscosity. The experiment involves preparing a drilling fluid sample, calibrating the Marsh funnel with fresh water, then measuring the time for 946cc of the sample to pass through the funnel. The funnel viscosity measurement provides an indication of changes in the drilling fluid viscosity over time, though it does not directly measure the true fluid viscosity. Potential sources of error during the experiment are also discussed.
1. This experiment aims to find the properties of plastic viscosity, apparent viscosity and yield point of drilling mud using a Fann V-G viscometer.
2. A Fann viscometer measures the rheology of drilling mud by applying forces between a central bob and outer rotating sleeve to determine viscosity parameters.
3. The experiment involves preparing a bentonite mud sample, loading it into the Fann viscometer, and taking readings at different RPMs to calculate viscosity values.
Gel Strength Exp. Drilling Engineering, Mud Lab, Exp.Jarjis Mohammed
Gel Strength by jarjis
Experiment Number 6: Gel Strength.
Koya University.
Faculty of Engineering.
Drilling Lab
Supervised By Muhammad Jamal
=============
This a report about Gel Strength. written by Jarjis Muhammad, Petroleum Engineering Dep. Koya University. For more Information please contact me: www.facebook.com/Jarjis.shaqlawaee
This experiment aimed to determine the filtration rate of mud under 90-100 psi pressure using a standard API filter press. Mud was prepared using water and bentonite and tested in the filter press, which applied pressure for 30 minutes. The mud formed a 4 mm thick cake and 18.7 cc of filtrate was collected. Temperature affects viscosity and filtration rate, so should be reported. The experiment showed how mud cake thickness and filtrate volume can be measured under controlled pressure and temperature using a filter press.
1. The aim of the experiment was to reduce the mud's density through dilution by adding water. This reduces the hydrostatic pressure.
2. Procedures involved mixing bentonite and water to create mud, then adding additional water to dilute the mud. Density measurements before and after dilution showed a reduction from 8.58 ppg to 8.45 ppg.
3. Mud dilution with fresh water is not effective for field drilling or acceptable for drilling shale formations, as fresh water can damage shale through swelling. Other methods like adding bentonite or barite are required to control mud density and pressures.
Casting process and moulding process file for trainning report complet trainn...chourasiya12345
The document provides information about sand casting and sand testing methods used in casting industries. It discusses the basic sand casting process which involves creating a mold from sand, pouring molten metal, and allowing it to solidify. It then describes various tests conducted on molds sands to evaluate properties like moisture content, clay content, grain size, permeability, and strength. These sand tests help control mold sand composition and ensure required properties are achieved.
1. The document discusses a study on the effect of contamination on water-based drilling mud. Salt (NaCl) was added to fresh water mud at 0.1% to study its effects.
2. Testing found that adding NaCl increased the mud density to 9.08 ppg and maintained a pH of 8. Filtrate volume was measured at 22 cc after 30 minutes. Mud cake thickness was recorded as 3.42 mm.
3. The plastic viscosity was 6 cP, apparent viscosity was 20 cP, and yield point was 28 lb/100ft2. Gel strengths were 30 lb/100ft2 at 10 seconds and 31 lb/100ft2 at 10 minutes.
The document provides a summary of a geotechnical investigation report for a proposed check dam construction site. Three boreholes were drilled and standard penetration tests (SPT) were conducted at 1.5m intervals to determine soil properties. Laboratory tests including specific gravity, moisture content, particle size distribution, liquid limit and plastic limit tests were performed on soil samples. Subsurface exploration found soils to have SPT values ranging from 3 to 60. The report provides tables with soil properties and allowable bearing capacities for foundations of varying widths at 0.86m depth.
This document summarizes an experiment conducted by Muhammad Sulaimon Rasul to determine the percentage of sand-sized particles in a drilling fluid sample using sand content equipment. The experiment involved preparing a water-based mud using bentonite and barite, then measuring its density. The sand content equipment was used to separate sand-sized particles from the mud sample by filtering. The percentage of sand was then read directly from the graduated measuring tube of the equipment. The results showed a sand content of 5% for the tested water-based mud sample.
1. The aim of the experiment was to reduce the mud's density through dilution by adding water. This reduces the hydrostatic pressure.
2. Procedures involved mixing bentonite and water to create mud, then adding additional water to dilute the mud. Density measurements before and after dilution showed a reduction from 8.58 ppg to 8.45 ppg.
3. Mud dilution with fresh water is not effective for field drilling or acceptable for drilling shale formations, as fresh water can damage shale through swelling. Other methods like adding bentonite or barite are required to control mud density and pressures.
1. Hydraulic Fracturing and It’s Process 2
What is hydraulic fracturing? 2
Hydraulic Fracturing Process 3
2. Importance and Application of Hydraulic Fracturing in Shale Formation 4
Importance of Hydraulic Fracturing 4
Hydraulic Fracturing in Shale Formation 5
3. Inflow Performance Relationship (IPR) 6
1. What is IPR and uses of IPR? 6
2. List three main factors affecting IPR? 7
3. Explain inflow and outflow performance? 7
4. Artificial Lift Method and Its Application 8
Application of Artificial Lift 8
Hydraulic pumps 9
Beam pumps 10
5. Electric Submersible Pumps 12
6. Gas Lift Method 13
This is an academic lecture for Diploma in Engineering 7th Semester Mining and Mine Survey Technology. The Course related to this presentation is Cementing.
This document discusses cementing in oil and gas wells. It covers factors that affect cement slurry design like well depth and temperature. It describes cement additives that can control setting time. Float equipment like float collars and shoes are used to guide casing and enable cement circulation. Primary cementing involves pumping cement between casing and borehole to isolate formations. Secondary cementing through squeeze cementing can repair isolation barriers. Liner cementing cases off the open hole below an existing casing string. Cement plugs placed in casing are used for abandoning wells or zonal isolation.
Study of Suitability of Artificial sand in Plastering & ConcreteIRJET Journal
The document studies the suitability of different types of sand for use in plastering and concrete. Compressive strength tests were performed on cement mortar cubes made with natural sand, manufactured sand, silica sand, and blast furnace slag sand. Silica sand mortar cubes had the highest compressive strength. Acid attack and sulfate attack tests also showed silica sand mortar had higher strength than the other sand types. A finite element analysis was done to study the pullout pressure and temperature effects of plaster made with different sand mortars on a concrete block wall. Silica sand plaster showed higher normal elastic strain capacity compared to the other sands. The study concluded silica sand is the most suitable sand for use in
In mining operations, blasting has become a routine work. With proper understanding of the rocks and blasting methods, the mining work can be done effectively. This module explains the rock blasting methods adopted in mining industries.
This document discusses well completion, which involves all post-drilling operations necessary for hydrocarbon production. It describes how completion planning must consider reservoir characteristics, fluid properties, and production forecasts to optimize equipment selection and well design. The document outlines different types of completions, including open hole, cased hole, tubingless, packerless, single string, selective, and multiple string configurations. Factors that influence completion design are also summarized such as reservoir pressure, permeability, fluid chemistry, temperature, and long-term production.
This document contains the results of a soil mechanics laboratory experiment on consolidation and permeability tests. It includes an introduction to consolidation and the principles behind the consolidation test. The document outlines the experimental procedures, summarizes the results in tables and calculations, and draws conclusions. Specifically, it was found that the soil sample had low permeability based on the small coefficient of permeability value calculated. The total settlement of the sample under loading was also small, likely due to proper compaction removing air from the soil.
In the following pages to follow an attempt is being made to bring forward a brief analysis about the concrete mix designs of M30 and M40 concrete. Here an effort has been made to find out the compressive strengths developed by both M30 and M40 concrete not only by its normal mix design but also through addition of admixtures and fibres.
The theories presented here have been adopted from the study of various standard codes available for the conduct of civil engineers. Any suggestions and queries regarding correction of the theories as well as the numerical presentations are welcome.
Close care has been taken to present the design solution calculation to the nearest possible decimal values and any error or misprint in the calculations may suitably be considered.
This document summarizes a student project on simulating a steam-assisted gravity drainage (SAGD) reservoir using CMG software. It includes an abstract, acknowledgements, lists of tables and figures, and outlines the objectives of modeling the SAGD process under different parameters. The project involves building a 3D reservoir model in CMG's STARS simulator to investigate SAGD production performance. The model is run under a base case and alternative cases where injection parameters are varied. Results are compared to analyze the effect of parameters on cumulative oil production over time.
This document discusses cementation jobs in oil and gas wells. It begins by explaining the objective of cementing wells, which is to isolate zones and support the casing. It then describes how cementing works, including preparing the cement slurry, pumping it down the casing using plugs, and allowing it to harden. The document discusses primary cementing techniques like single-stage and multi-stage cementing. It also covers API cement classifications and discusses the use of additives like accelerators, retarders, and fluid loss additives. In summary, the document provides an overview of the cementing process and various techniques used to isolate zones and support casing in oil and gas wells.
The document discusses drilling fluids, including their types, functions, properties, additives, and equipment/design considerations. The key types are water-based and oil-based muds. Drilling fluids must perform critical functions like controlling subsurface pressures, removing cuttings from the wellbore, lubricating the drill bit, and maintaining wellbore stability. Achieving these functions depends on optimizing properties like density, viscosity, and gel strength through the use of various additives like weighting agents, viscosifiers, and filtration control materials. Careful fluid selection and design is needed based on formation data and drilling conditions.
This document discusses the effects of perforating horizontal wells in the Wilmington Oil Field case study. It outlines the objectives of investigating how perforation parameters affect horizontal well productivity. It describes shaped charge perforation technology and the components of perforating guns. It discusses factors that influence well productivity like skin effect and how perforations help reduce skin. Calculations for modeling perforation skin effects are presented. The conclusion recommends future reservoir simulations to improve understanding of complex reservoir structures and well performance.
This document discusses drilling fluids, including their types, functions, properties, and additives. It covers the main types of drilling fluids as water-based and oil-based, and their key functions such as removing cuttings from the wellbore, maintaining wellbore pressure and stability, lubricating and cooling the drill bit. The most common additives are described, including weighting materials to increase mud density, viscosifiers to suspend cuttings and materials, and other additives that control filtration, rheology, alkalinity and other properties. Selection of the appropriate drilling fluid depends on formation data and requirements for each well section.
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2. 2
Acknowledgement
“I would like to express my deepest appreciation to all those who provided me the
possibility to complete this experiment. I would also like to show my deepest gratitude to
my lecturer, Dr. Mahmood for giving me a good guideline for this experiment throughout
numerous consultations. Moreover, I would like to appreciate the crucial role of the staff
of APU University who gave the permission to use all equipment and necessary materials
to complete the laboratory, and also a special thanks goes to my group who did well in the
lab to success in this experiment. Last but not least, many thanks go to the head of the APU
University whose have invested his full effort in guiding the students to achieving their
goals.”
3. 3
Table of Contents
Abstract ........................................................................................................................................... 5
Objective:........................................................................................................................................ 5
Introduction..................................................................................................................................... 6
Theory and Literature Review ........................................................................................................ 7
Apparatus & Materials.................................................................................................................... 8
Methodology................................................................................................................................. 17
Results and Discussions................................................................................................................ 19
Discussions.................................................................................................................................... 24
Conclusion .................................................................................................................................... 25
Suggestion..................................................................................................................................... 26
Refremces...................................................................................................................................... 27
4. 4
List of Figure
Figure(3):Mud mixer....................................................................................................................... 8
Figure(4):Mud balance................................................................................................................... 9
Figure(5):Rheometer...................................................................................................................... 9
Figure(6):Thermometer................................................................................................................ 10
Figure(7):Filter press with cylinder of gas................................................................................... 10
Figure(8):Graduated cylinder....................................................................................................... 11
Figure(9):PH meter ...................................................................................................................... 11
Figure(10):PH paper .................................................................................................................... 12
Figure(11):Resistivity meter ........................................................................................................ 12
Figure(12):Filter paper................................................................................................................. 13
Figure(13):Beaker ........................................................................................................................ 13
Figure(14):Lid of the filter press.................................................................................................. 14
Figure(15):Ring............................................................................................................................ 14
Figure(16):Electronic balance...................................................................................................... 14
Figure(17):Vernier Caliper .......................................................................................................... 15
Figure(18):Bentonite.................................................................................................................... 15
Figure (19): Barite ....................................................................................................................... 16
Figure (20): Depth Vs mud density19 ........................................................................................ 19
List of Table & Graph
Table 1- case study data ............................................................................................................... 19
Table 2- parameters used for barite............................................................................................... 20
Table 3- Mud-1 properties .......................................................................................................... 20
Table 4- barite parameters needed ............................................................................................... 22
Table 5- Mud-2 properties .......................................................................................................... 22
5. 5
Abstract:
This assignment was used to design a mud and preparing mud for a well having a depth of 10000ft
and each depth consist of different pore pressure gradient and fracture gradient. It was important
to take in consider the safety margins and the kick margins by adding to the pore pressure gradient
0.5ppg and subtracting from fracture pressure 0.5ppg as shown in table (1). Then it has been drew
the mud window to create a proper mud to solve the issue in this assignment and become safer.
Since there are two muds needed to be prepared for a well having a depth of 10000ft and each with
different density, it is important to measure the amount of barite required in order to increase the
density to the target wanted. has been created the mud with 10.9 ppg, after creating the mud for
this density will be testing all the classification for this test and if it is goof or no. The temperature
for this mud was 28.7C and the density has been measured as well which was 10.95 and the ph
was 8. In addition, has been measured the viscosity at different speed by using viscometers the
speed was at 5,6,100,200,300, and 600 rpm the results shows in table 3. Then it has been measured
the gel strength at 10s and 10 mins which was 30, and 31ib.100ft2 respectively, then it has been
calculated the plastic viscosity, apparent viscosity, and yield point by the equation given above,
and the results mentioned in table 3. Lastly has been measure the filtrate volume for 5,10, 15,20,15
and 30mins the total volume which was at 30 mins with result about 16.5cc. then it has been
measured the mud cake thickness for this type of mud which was 3.23mm. it was given some of
the errors that faced while drilling a well, those problems were loss circulation, high and innovation
and the stuck pipe. in the first step it has been designed the sample mud that required to use at the
surface, while the pressure of the well increase it should increase the density of the mud to balance
between the hydrostatic pressure with the formation pressure, so it has been increased the density
of the mud by using the barite, the mud was 10, and 14ppg.
Objective
1. To synthesis water-based mud (WBM) to improve drilling efficiency.
6. 6
Introduction
“Drilling mud is utilized to help the drilling of boreholes into the earth. Generally used while
drilling a reservoir or creating a hole on the earth to extract the hydrocarbon and natural gas water
wells and exploration drilling rigs, drilling fluids are also used for easier boreholes, such as water
wells. Liquid drilling fluid is often called drilling mud. The three main categories of drilling fluids
are water-based muds (which can be dispersed and non-dispersed), non-aqueous muds, usually
called oil-based mud, and gaseous drilling fluid, in which a variety of gases can be used. The
functions of drilling liquids include hydrostatic pressure to prevent formation pressure while
decreasing, it used to balance the pressure of the hydrostatic pressure and the formation pressure,
and many more of the utilizes, it used from entering into the wellbore, to get exercise the bit cool
and clean during drilling, holding away drill cuttings, and hanging the drilling waste while drilling
is paused and when the going assemblage is introduced and away of the well.”
“The drilling fluid used for your task is selected to avoid formation damage and limit corrosion. It
is almost sure that problems will occur while heading a well, even in very carefully planned
boreholes. For example, in areas through which similar drilling methods are being used, pit
problems may have recently been reported where no such problems existed previously because
formations are nonhomogeneous. As a result, two wells near the other person may have totally
different geological conditions. In well planning, the important thing to obtaining objectives
successfully is to design drilling programs on the basis of the expectation of potential whole
problems rather than on extreme caution and containment.”
“Drilling problems can be very costly. The most prevalent going problems include pipe stoke, lost
circulation, hole change, pipe failures, borehole insecurity, mud contamination, formation
destruction, hole cleaning, H2S-bearing development and shallow gas, equipment, and personnel-
related problems Understanding and anticipating going problems, understanding their triggers, and
planning solutions are necessary for overall-well-cost control and for successfully attaining the
target zone (NOAH, 11/12/2012).”
7. 7
Theory and Literature Review
“Many different types of water-based mud are used in drilling operations. Basic drilling fluid
systems are usually converted to more complex systems as a well is deepened and the wellbore
temperature and/or pressure increases. Several key factors affect the selection of drilling fluid
systems for a specific condition. The most favorable drilling fluid for a well or interval should be
based on the criteria as such;”
1- “Performance-inhibition, rheology, fluid loss and temperature.”
2- “Environment-damage to the environment should be avoided.”
3- “Safety-to all personnel.”
4- “Average cost.”
“In this experiment has some problems that will solve by making a mud, these problems are:”
“Pipe Sticking”
“During drilling operations, a pipe is considered stuck if it cannot be freed and pulled out of the
hole without damaging the pipe and without exceeding the drilling rig ’ s maximum allowed hook
load. Differential pressure pipe sticking and mechanical pipe sticking are addressed in this section.
Differential-pressure pipe sticking occurs when a portion of the drill string becomes embedded in
a mud cake (an impermeable film of fine solids) that forms on the wall of a permeable formation
during drilling.”
“Loss of Circulation”
“Lost circulation is defined as the uncontrolled flow of whole mud into a formation, sometimes
referred to as thief zone. In partially lost circulation, mud continues to flow to the surface with
some loss to the formation. Total lost circulation, however, occurs when all the mud flows into a
formation with no return to the surface. If drilling continues in total lost circulation, it is referred
to as blind drilling. This is not a common practice in the field unless the formation above the thief
zone is mechanically stable, there is no production, and the fluid is clear water. Blind drilling also
may continue if it is economically feasible and safe.”
8. 8
“Hole Deviation”
“Hole deviation is the unintentional departure of the drill bit from a preselected borehole trajectory.
Whether drilling a straight or curved-hole section, the tendency of the bit to walk away from the
desired path can lead to higher drilling costs and lease-boundary legal problems. Fig. 10.6 provides
examples of hole deviations.”
Apparatus & Materials
“Mud mixer”
“The mixer is used to prepare the mud sample with given some of bentonite or other chemicals
that has been use in this experiment. Most drilling fluid formulations contain a base liquid and
additives which must be dissolved or mechanically dispersed into the liquid to form a homogenous
fluid.”
Figure (1): Mud mixer
9. 9
“Mud balance”
“A device to measure density (weight) of mud, cement or other liquid or slurry. A mud balance
consists of a fixed-volume mud cup with a lid on one end of a graduated beam and a counterweight
on the other end. A slider-weight can be moved along the beam, and a bubble indicates when the
beam is level.”
Figure (2): Mud balance
“Rheometer”
“The main objective is to find the apparent viscosity, plastic viscosity, yield point and true yield
point for the given mud sample and gel strength.”
Figure (3): Rheometer
10. 10
“Thermometer”
“Using a thermometer to check your temperature in mud fluid after has been mad it by the mixer.
A rise in your temperature is usually caused by an infection. When using any kind of thermometer,
make sure you read and follow the instructions that come with the thermometer.”
Figure (4): Thermometer
Filter press
A filtration press with the cylinder of the nitrogen use to measure the water on the mud by
measuring the time it takes around 30 mins to measure how much liquid in this mud, also it
measure the permeability and the water loss of the mud, therefore, the test is done to determine the
thickness of the mud cake.
Figure (5): Filter press and cylinder of nitrogen
11. 11
Graduated cylinder
The graduated cylinder use to measure the water loses on the mud, by using the filter press, it has
been measured the water losses at 30 mins each 5 mins it has been recorded. it will mention the
data in brief below on the calculation.
Figure (6): Graduated cylinder
“PH meter / ph paper”
“PH meter is between a pH electrode and a reference electrode, and so the pH meter is sometimes
referred to as a "potentiometric pH meter". The difference in electrical potential relates to the
acidity or pH of the solution. A scientific instrument that measures the hydrogen-ion activity in
water-based solutions, indicating its acidity or alkalinity expressed as ph. The pH meter measures
the difference in electrical potential.”
Figure (7): ph meter
12. 12
PH paper
The ph paper use to determine the pH of the given sample.
Figure (8): ph paper
Resistivity meter
This tester is used to measure the resistivity of mud.
Figure (9): Resistivity meter
13. 13
Filter paper
The filter paper use while measuring the water volume by using the filter press.
Figure (10): Filter paper
Beaker
Use to measure the amount of water.
Figure (11): Beaker
14. 14
Lid with valve
This lid connect the filter press with a cylinder of nitrogen, and us to close the cup of the filter
press while measuring the volume of water.
Figure (12): Lid of the filter press
Ring
Use to prevent the seeps of gas, it is very important for safety.
Figure (13): Ring
“Electronic balance”
“Use to measure the amount of bentonite and barite, which is very sensitive measurement tool”
Figure (14): Electronic balance
15. 15
“Vernier caliper”
“The Vernier use to measure the mud cake thickness of the mud. Parts of a Vernier caliper:”
1- “outside jaws: used to measure external diameter or width of an object.”
2- “Inside jaws used to measure internal diameter of an object.”
3- “Depth probe: used to measure depths of an object or a hole”
4- “Main scale: marked every mm.”
5- “Main scale: scale marked in inches and fractions.”
6- “Vernier scale gives interpolated measurements to 0.1 mm or better.”
7- “Vernier scale gives interpolated measurements in fractions of an inch.”
8- “Retainer: used to block movable part to allow the easy transferring of a measurement.”
Figure (15): Vernier caliper
“Bentonite”
“Bentonite is a clay that has a particularly useful characteristic. It can absorb many times its weight
in water. It is useful in drilling wells because water mixed with bentonite tends to coat the walls
of the hole and keep it from collapsing. Drillers call this coating a filter cake.”
Figure (16): Bentonite
16. 16
“Barite”
“To increase the mud density, barite is also used in a wide variety of other applications including
plastics, clutch pads, rubber mud flaps mold release compounds, radiation shielding, television
and computer monitors, the sound-deadening material in automobiles, traffic cones, brake linings,
paint and golf balls.
Figure (17): Barite
“Xanthan Gum”
“Xanthan Gum is a high molecular weight Bio-Polymer that provides excellent Rheology Control
for water based drilling, completion, and work-over fluids with a wide variety of brines. As a
natural Bio-Degradable, Cream-Colored Powder, the Xanthan is carefully produced and controlled
in a temperature-sensitive manufacturing facility similar to a Pure Culture Fermentation.”
“Advantages of the xanthan gum”
1- “Can be used in a wide range of Drilling Fluid.”
2- “Additives with a variety of fluid formulations.”
3- “Effective in fresh water or sea water with common Brines, such as Sodium, Potassium,
Calcium 4-hlorides, Calcium.”
4- “Bromides, and Zine Bromides.”
17. 17
Methodology:
Methodology:
The data of the reservoir was given which were surface depth (4500ft) and the total length of the
well (20000ft)
It was required to design a mud for flowing problems:
Loss circulation
High sand innovation
Stuck pipe
It has been made the mud for 4 times:
First mud that has been made from the surface to 2500ft
1-The mud mixture was contained of (350 pure water + 20grams of Bentonite)
2- It was mixed for 15 mins to make a good mud
3- After the mud was made, it has been measured the characteristics of this mud which were ph,
temperature, density, and the viscosity
4- The temperature of this mud was 31.5c
5- The ph was measured as well which was (8)
6- The viscosity has been tested at each speed
Second mud was made to balance the hydrostatic pressure, by increasing the mud density,
the depth was from 2500ft to 5000ft
1-The mud mixture was contained of (350 pure water 20 grams of Bentonite)
2- The mud was mixed for 5 mins, then switched the machine of to calculate the amount of the
barite.
3- It has been calculated the amount of the barite that has been added.
18. 18
4- The amount of the barite which was calculated, it has been added to the mud to increase the
density, and mixed for 15 mins
5-It has been measured the temperature
6- The ph was tested which was (8)
7- The density of the mud was measured to know if the mud density increased or not
8- Viscosity was tested by using the viscometer
Third mud was made to solve the loss circulation at the depth 5000ft to 7000ft
1-The mud mixture was contained of (350 pure water + 20grams of bentonite + 70.4grams of
Barite)
2- It has been added 2 grams of xanthan gum to solve this kind of problem
3- It has been mixed by a mixer for 15 mins
4- The temperature of this mud was measured by the thermometer
5- After the temperature has been measured, the ph was tested
6- The density of this mud was tested by using the mud balance
7-the mud cake and the filter volume were measured
Fourth mud that was designed to avoid the errors of stuck pipe
1-The mud mixture was contained of (350 pure water + 20grams of bentonite + 70.4grams of
Barite), then it was mixed for 5 mins
2- It was calculated the amount of water that was added to solve the problems of the stuck pipe
3- The water that was calculated, has been added to the mud, then it mixed for 15 mins
4- It have measured the temperature and the ph
5- The density of this mud was tested after the ph and Temperature
6- It has been measured the viscosity.
19. 19
Results and Discussions
This task required to prepare a mud for a well having a depth of 10000ft and each depth consist of
different pore pressure gradient and fracture gradient. It was important to take in consider the
safety margins and the kick margins by adding to the pore pressure gradient 0.5ppg and subtracting
from fracture pressure 0.5ppg as shown in table 1.
Table 1- case study data
,
Figure 1- Depth Vs mud density
20. 20
Since there are two muds needed to be prepared for a well having a depth of 10000ft and each with
different density, it is important to measure the amount of barite required in order to increase the
density to the target wanted. In order to calculate the proper amount of barite needed to increase
the density to 10.9ppg and 14ppg a certain equation was given,
Drilling fluid-1 (10.9ppg)
Table 2- parameters used for barite
The amount of barite needed to increase the density of mud-1 = 137.24g
Table 3- Mud-1 properties
No. Apparatus Property Result
1 Thermometer Temperature (°C) 28.7 °C
2 Mud Balance Density (ppg) 10.9 ppg
3 pH Meter / pH Paper pH Value 8
Rheology (cP)
3 rpm 21 cP
6 rpm 21 cP
100 rpm 24 cP
200 rpm 26 cP
300 rpm 30 cP
21. 21
4 Rotational Viscometer
600 rpm 42 cP
Plastic Viscosity (cP) Plastic viscosity (cp)= [600 rpm
reading] – [300 rpm reading]
42 – 30 = 12 cP
Apparent Viscosity (cP) Apparent viscosity (cp) = [600 rpm
reading] / 2
42 ÷ 2 = 21 cP
Yield Point (lb/100 ft2) Yield Point (Ib/1002) = [300rpm
reading] – Plastic viscosity
30 – 12 = 28 lb/100 ft2
Gel Strength (lb/100 ft2) 3(10 sec) 30 lb/100 ft2
3 (10 min) 31 lb/100 ft2
5
LPLT Filter Press
Filtrate Volume (cc)
5 min 7 (cc)
10 min 9 (cc)
15 min 11 (cc)
20 min 13 (cc)
25 min 14 (cc)
30 min 16.5 (cc)
6 Vernier Caliper Mud cake Thickness (mm) 3.23 mm
The equation needed to calculate the plastic viscosity,
Plastic viscosity (cp)= [600 rpm reading] – [300 rpm reading]
The equation needed to calculate the Apparent viscosity,
Apparent viscosity (cp) = [600 rpm reading] / 2
The equation needed to calculate the Yield Point,
Yield Point (Ib/1002) = [300rpm reading] – Plastic viscosity
22. 22
Drilling fluid-2 (14ppg)
Table 4- barite parameters needed
The amount of barite needed to increase the density of mud-1 = 374.5g
Table 5- Mud-2 properties
No. Apparatus Property Result
1 Thermometer Temperature (°C) 31.3 °C
2 Mud Balance Density (ppg) 14.95 ppg
3 pH Meter / pH Paper pH Value 7
4 Rotational Viscometer
Rheology (cP)
3 rpm 29 cP
6 rpm 31 cP
100 rpm 35 cP
200 rpm 40 cP
300 rpm 45 cP
600 rpm 58 cP
Plastic Viscosity (cP) Plastic viscosity (cp)= [600 rpm
reading] – [300 rpm reading]
48 – 45 = 13 cP
23. 23
Apparent Viscosity (cP) Apparent viscosity (cp) = [600 rpm
reading] / 2
58 ÷ 2 = 29 cP
Yield Point (lb/100 ft2) Yield Point (Ib/1002) = [300rpm
reading] – Plastic viscosity
45 – 13 = 32 lb/100 ft2
Gel Strength (lb/100 ft2) 3(10 sec) 59 lb/100 ft2
3 (10 min) 59.5 lb/100 ft2
5
LPLT Filter Press
Filtrate Volume (cc)
5 min 9.5 (cc)
10 min 13.5 (cc)
15 min 16.5 (cc)
20 min 19 (cc)
25 min 21.5 (cc)
30 min 24 (cc)
6 Vernier Caliper Mud cake Thickness (mm) 4.9 mm
24. 24
Discussion
This assignment was used to design a mud and preparing mud for a well having a depth of 10000ft
and each depth consist of different pore pressure gradient and fracture gradient. It was important
to take in consider the safety margins and the kick margins by adding to the pore pressure gradient
0.5ppg and subtracting from fracture pressure 0.5ppg as shown in table (1). Then it has been drew
the mud window to create a proper mud to solve the issue in this assignment and become safer.
Since there are two muds needed to be prepared for a well having a depth of 10000ft and each with
different density, it is important to measure the amount of barite required in order to increase the
density to the target wanted. In order to calculate the proper amount of barite needed to increase
the density to 10.9ppg and 14ppg a certain equation has been used this equation is below.
First of all, has been created the mud with 10.9 ppg, after creating the mud for this density will be
testing all the classification for this test and if it is goof or no. The temperature for this mud was
28.7C and the density has been measured as well which was 10.95 and the ph was 8. In addition,
has been measured the viscosity at different speed by using viscometers the speed was at
5,6,100,200,300, and 600 rpm the results shows in table 3. Then it has been measured the gel
strength at 10s and 10 mins which was 30, and 31ib.100ft2 respectively, then it has been calculated
the plastic viscosity, apparent viscosity, and yield point by the equation given above, and the results
mentioned in table 3. Lastly has been measure the filtrate volume for 5,10, 15,20,15 and 30mins
the total volume which was at 30 mins with result about 16.5cc. then it has been measured the mud
cake thickness for this type of mud which was 3.23mm.
Second of all, has been made the Drilling fluid-2 which required density about 14ppg, after the
mud has been created will be measured its properties. Firstly, it has measured the temperature
which was at 31.3C, and the density was 14.05 which is good as needed, the ph has been reduced
if compared with first mud the ph for this md is 7.second, it has been measured the viscosity with
3,6,100, 200, 300, and 600rpm by using the viscometers Machin and the results mentioned on
table 5, after that has been calculated the plastic viscosity, apparent viscosity and yield point for
this mud which was higher than the first shamble and the results mentioned on table 5. After that
has been found the gel strength at 10s and 10 mins which were 59, and 59.5 ib/100ft2 respectively,
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this gel strength is higher than the mud with 10ppg. Lastly, has been measured the water volume
by using the filter press and the total volume for this mud was 24cc which is higher than the mud
with 10ppg. Then it has measured the mud cake thickness which was4.9mm more than the last
mud which was 3.23mm. Last but not less this assignment was interesting and helpful for the
student to get knowledge of the drilling mud, also how to solve the problems that will affect on
the drill bit and how to use create the proper mud for it, this assignment it will help the student a
lot in the future.
Conclusion
In summary; this experiment was helpful for a student to get knowledge on the drilling mud, and
designed the best mud for different problems, it was given some of the errors that faced while
drilling a well, those problems were loss circulation, high and innovation and the stuck pipe. in the
first step it has been designed the sample mud that required to use at the surface, while the pressure
of the well increase it should increase the density of the mud to balance between the hydrostatic
pressure with the formation pressure, so it has been increased the density of the mud by using the
barite, the mud was 10, and 14ppg. Each mud types used for different depth the higher depth will
be used the higher density need to prevent any collapse or burst, so we have to create a prober mud
types while drilling a well.
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Suggestion
It is very important to know the errors that will face in the experiment to avoid it. However, in this
assignment, there is some suggestion that will reduce the problems while creating the mud as well
as the test of the drilling mud. I suggest this experiment could be more accurate if the procedure
was repeated at least 5 times and the average results were obtained but time was not in our favor.
1- Should be calculated the volume of barite to increase the mud and use the Electronic balance to
measure the volume of the barite, it very sensitive.
2-The experiment would have also been more accurate if it was performed more carefully and less
mud was lost due to spilling or splashing when in the blender.
3- Make sure that the Electronic balance clean there is not any sand on it, then restart to use, this
is to avoid the errors that will come in the amount of the barite.
4- Clean the mud balance to avoid the result of the density, there are different fluid each fluid has
different density, so it needs to clean it every time.
5-when it measures the gel strength, it should take rest for 5 mins to get the proper result because
the Rheometer is very sensitive to the viscosity.
6-make sure there is no seeps of the gas while using the Filter press.
7-To improve the quality of the experiment it is suggested that more advanced tools were used in
the experiment such as a more advanced weigh or viscometer.
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References
Mitchell,R.F.,26 April 2017. PEH:Drilling Problemsand Solutions. [Online]
Available at:http://petrowiki.org/PEH:Drilling_Problems_and_Solutions
[Accessed 25 2 2021].
NOAH,A.Z., 11/12/2012. Controlslossesin Depleted Reservoirsand high-permeability formationsusing
Nanomaterialasa new mud. [Online]
Available at:http://www.lifesciencesite.com/lsj/life0902s/030_11165life0902s_161_170.pdf
[Accessed 25 2 2021].