This project “Study of drill cutting and Formulation of drilling fluid.” was performed in R&D LAB, Institute of drilling technology, ONGC, dehradun. Study of drill cutting is done in terms of CST(capillary suction time), MBC(Methylene Blue Capacity) and XRD(X-ray diffraction).
• Later than several drilling fluid with different formulation are prepared and several tests (like Rheology Test, Lubricity Test, API Filter press, Linear swell Test and pH test) are performed on drilling fluid to check the suitability of it on drill cutting. Thus the suitable formulation of drilling fluid is found.
Drilling fluids are absolutely essential during the drilling process and considered the primary well control.
Know more now about such a very important component of the drilling process.
The acidizing is pumping of the acids into the wellbore to remove near well formation damage and other damaging substances, matrix acidizing is applied primarily to remove skin damage that caused by drilling, completion, work over, well killing or injection fluids.
This project is concerned with carbonate reservoirs that exceeded in Kurdistan subsurface formations.
Conduct a case study using real industrial data of Arab-D formation (Ghawar oil field – Saudi Arabia) which has five water wells were treated with 50 gallon of HCl acid The treatment acid was placed with coiled tubing and foam was used as diverter. The foam was made from nitrogen, water and surfactants.
Water injection pressure, injection rate and injection flow meter profiles prior to and after the treatment for the five wells show optimistic results to an acceptable extent
In coiled tubing acid placement, the coiled tubing/borehole annulus is usually filled with acid which allow the acid to be in contact with the entire zone at bottom hole temperature condition. This reduces the degree of diversion effectiveness.
Recommend people who work in carbonate reservoirs they should done their work on petrophysical analysis and the porosity should not have exceeded by the acids
Drilling fluids are absolutely essential during the drilling process and considered the primary well control.
Know more now about such a very important component of the drilling process.
The acidizing is pumping of the acids into the wellbore to remove near well formation damage and other damaging substances, matrix acidizing is applied primarily to remove skin damage that caused by drilling, completion, work over, well killing or injection fluids.
This project is concerned with carbonate reservoirs that exceeded in Kurdistan subsurface formations.
Conduct a case study using real industrial data of Arab-D formation (Ghawar oil field – Saudi Arabia) which has five water wells were treated with 50 gallon of HCl acid The treatment acid was placed with coiled tubing and foam was used as diverter. The foam was made from nitrogen, water and surfactants.
Water injection pressure, injection rate and injection flow meter profiles prior to and after the treatment for the five wells show optimistic results to an acceptable extent
In coiled tubing acid placement, the coiled tubing/borehole annulus is usually filled with acid which allow the acid to be in contact with the entire zone at bottom hole temperature condition. This reduces the degree of diversion effectiveness.
Recommend people who work in carbonate reservoirs they should done their work on petrophysical analysis and the porosity should not have exceeded by the acids
DRILLING FLUIDS FOR THE HPHT ENVIRONMENTMohan Doshi
A BRIEF REVIEW OF THE DRILLING FLUIDS FOR DRILLING HPHT WELLS. HPHT WELLS ARE NOT BUSINESS AS USUAL AND THE SAME APPLIES TO HPHT DRILLING FLUIDS. THE FLUID CHEMISTRY AND THE FLUID COMPOSITION HAVE TO BE TAILORED TO MEET THE RIGORS OF THE HIGH TEMPERATURE ENVIRONMENT
I hope this presentation helps you to understand why we use acidizing process and calculations needed to perform the optimum acidizing .
Any questions contact me at karim.elfarash@std.suezuniv.edu.eg
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.
it is a benficial slide who wants to know about the drilling fluids and the rhelogical aspects of the drilling fluids. the things are clear and very clear in this slide and this slide is very beneficial for the one who know basics of drilling fluids in a knowledgeable way
production engineering 2 topic.
which includes the production logging tools, its application, categories of application and also some uses of the log with example in the practical life and physics.
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.
Primary Cementing as a one important operation during drilling. This slide is included fundamental of cementing which helps to petroleum and civil engineering
Professional PowerPoint template for oil and gas presentations.
This is a fully customizable template with individual graphic elements and images. You are free to adjust cover, divider, and content slider header layouts.
Download at: http://www.powerpointteam.com/oil-industry-powerpoint-template.html
Available in standard and widescreen format.
Your comments will be highly appreciated. Thank you!
DRILLING FLUIDS FOR THE HPHT ENVIRONMENTMohan Doshi
A BRIEF REVIEW OF THE DRILLING FLUIDS FOR DRILLING HPHT WELLS. HPHT WELLS ARE NOT BUSINESS AS USUAL AND THE SAME APPLIES TO HPHT DRILLING FLUIDS. THE FLUID CHEMISTRY AND THE FLUID COMPOSITION HAVE TO BE TAILORED TO MEET THE RIGORS OF THE HIGH TEMPERATURE ENVIRONMENT
I hope this presentation helps you to understand why we use acidizing process and calculations needed to perform the optimum acidizing .
Any questions contact me at karim.elfarash@std.suezuniv.edu.eg
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.
it is a benficial slide who wants to know about the drilling fluids and the rhelogical aspects of the drilling fluids. the things are clear and very clear in this slide and this slide is very beneficial for the one who know basics of drilling fluids in a knowledgeable way
production engineering 2 topic.
which includes the production logging tools, its application, categories of application and also some uses of the log with example in the practical life and physics.
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.
Primary Cementing as a one important operation during drilling. This slide is included fundamental of cementing which helps to petroleum and civil engineering
Professional PowerPoint template for oil and gas presentations.
This is a fully customizable template with individual graphic elements and images. You are free to adjust cover, divider, and content slider header layouts.
Download at: http://www.powerpointteam.com/oil-industry-powerpoint-template.html
Available in standard and widescreen format.
Your comments will be highly appreciated. Thank you!
Oil 101: Introduction to Oil and Gas - UpstreamEKT Interactive
Oil 101: Introduction to Oil and Gas - Upstream
What is Upstream? This Midstream content is derived from our Oil 101 Upstream ebook and can be found in our oil and gas learning community.
This Upstream module includes the following sections (use the links below for quick access):
-Introduction to Upstream
-Upstream Business Characteristics
-Oilfield Services
-Reserves – Formation and Importance
-Production – The First Step in Adding Value
-The Unconventional Future of Upstream
Upstream
What is Upstream? Most oil and gas companies’ business structures are segmented and organized according to business segment, assets, or function.
The upstream segment of the business is also known as the exploration and production (E&P) sector because it encompasses activities related to searching for, recovering and producing crude oil and natural gas.
The upstream segment is all about wells: where to locate them; how deep and how far to drill them; and how to design, construct, operate and manage them to deliver the greatest possible return on investment with the lightest, safest and smallest operational footprint.
Exploration
The exploration sector involves obtaining a lease and permission to drill from the owners of onshore or offshore acreage thought to contain oil or gas, and conducting necessary geological and geophysical (G&G) surveys required to explore for (and hopefully find) economic accumulations of oil or gas.
Drilling
There is always uncertainty in the geological and geophysical survey results. The only way to be sure that a prospect is favorable is to drill an exploratory well. Drilling is physically creating the “borehole” in the ground that will eventually become an oil or gas well. This work is done by rig contractors and service companies in the Oilfield Services business sector.
Production
The production sector of the upstream segment maximizes recovery of petroleum from subsurface reservoirs.
Introduction to Oil and Gas Industry from Upstream (Exploration & Production), Midstream (Transportation & Storage), to Downstream (Refining, Petrochemical, & Marketing)
Evaluation of CO2 Storage Capacity and EOR in the Bakken Shale Oil ReservoirsHamid Lashgari
This paper presents a new perspective in modeling and analyzing efficiency of CO2 and miscible gas injection for potential enhanced oil recovery (EOR) and CO2 storage in shale oil plays. Our major focuses are conceptual and fundamental understanding of the dominant trapping and oil recovery mechanisms behind miscible gas injection. The efficiency of the CO2 Huff-n-Puff process in shale oil production has been widely investigated in recent years because of the ultra-low permeability (1 to 100 µD) of shale oil reservoirs and poor geological connectivity between hydraulic fractured wells. Here we used hydrocarbon fluid properties of a Middle Bakken tight oil reservoir, and considered a wide range of permeability (from 1 to 100µD) and isotherm adsorption properties for CO2 and CH4. A large scale numerical model was set up to simulate and capture the important mechanisms behind various miscible gas injection scenarios.
Simulation results reveal that CO2 adsorption and CH4 desorption along with molecular diffusion of hydrocarbon components are crucial in the presence of organic matter content and pores, however, recycle enriched gas injection demonstrated a high oil recovery compared to miscible CO2 injection. Although CO2 adsorption is large in organic rich shale oil based on literature measurements, CO2 efficiency in enhancing oil recovery is not as much as recycle enriched gas with ethane (C2). However, CO2 trapping may be substantial due to adsorption (5.0% to 10%) and other conventional trapping mechanisms, and the amount of CO2 trapped could be a significant fraction of the total injected amount (25% to 50% considering other trapping mechanisms such as CO¬2 dissolution, residual, and free gas). Simulation results strongly support that CO2 molecular diffusion can assist in the deep penetration of CO2 to touch larger surface area of matrix to become adsorbed, as well as dissolved in other coexisting phases and residual trapping.
IMPACT OF QUARRY DUST AND FLY ASH ON THE FRESH AND HARDENED PROPERTIES OF SEL...AbdulRazakBH
Abstract-Self-compacting concrete (SCC) is a flowing concrete mixture that is able to consolidate under its own weight. The highly fluid nature of SCC makes it suitable for placing in difficult conditions and in sections with congested reinforcement. The objective of this study is to investigate the influence of partial replacement of natural river sand by quarry dust in different percentages and to study the effect of replacement of cement by fly ash in the preparation of self compacting concrete. Mix design of SCC with various dosages of quarry dust and fly ash was done for diffent cementitious content and the effect on fresh and hardened properties was studied. SCC trial made with flyash addition at 20% as a partial replacement with cement has shows similar results as that of trial with no flyash addition. Flyash addition around 50% has shows extended (more than 24 hours) setting time of concrete and compressive strengths are not conforming to even M20 grade requirements for the trial made with 400 kg/m3 of Cementitious content. In order to affect the advantage of flyash utilization there shall be a minimum of 30% flyash replacement for cement. Usage of quarry dust decreases workability and with the usage of admixtures the workability of the mix was well maintained. Key Words: Self compacting concrete, Quarry Dust, Fly Ash
Compatibility study of slag cement with PCE based admixturesAbdulRazakBH
Abstract - Admixture-Cement interaction in concrete is a complex blend of chemical and physical mechanism that are independent. Every admixture at optimum dosage gives better results when used with cement. The proposed research work is aimed at testing compatibility of slag cement at different dosages with PCE based admixtures. It was found that The Combination 80% Cement With 20% GGBS Are More Compatible Compared To All The Optimum Dosage Combinations.
Key Words: GGBS, PCE based admixture, Compatibility
Contact Glycon at (800) 255-9969 for more information. Get a fast quote http://www.glycon.com/quote
Glycon Corp. is an innovator in the design and manufacturing of feed screws, barrels, non-return valves and other melt stream solutions for injection molding, extrusion and blowmolding.
For more than 30 years, Glycon Corp. has focused on helping our customers to become better, more efficient processors. Our current family of advanced technologies are all designed specifically to improve throughput, increase quality, reduce scrap and streamline processing. Whether your application is simple or complex, we can help improve your machine efficiency, part quality and reliability.
Product & Process Development
As processors gear up for production on a new project, Glycon's dedicated Product Development Center has the resources to help optimize screw performance, testing several different designs and then zeroing in on the best melting and mixing combination. Or, if a molder is having a problem with splay or burning, or if an extruder is not getting proper mixing or sufficient throughput, technicians at the Center, can reproduce these problems under controlled conditions and quickly find ways to attack the problem through the application of the latest screw and processing technology.
Rebuilding Services
Glycon Corp. experts can help extend the life of costly meltstream components. Feedscrews can be rebuilt to match original performance specifications. Barrels can be resleeved to original dimensions. Other components, like our QSO® non-return valve, can be rebuilt. All done quickly and with the highest standard of quality.
Preventive Maintenance & Installation
Glycon Corp. can assist with setup and maintenance of your feedscrew and related meltstream components. Our 10-Step Field Service Program streamlines setup and checks that your feedscrews are operating correctly. We can also design a maintenance program to reduce downtime and keep your systems operating as efficiently as the day they were installed. And we can train your maintenance personnel or implement the program ourselves.
Our products include:
Distributive Mixing & Melting Screw
Barrier Screws
Feedscrew Rebuilding
General Purpose Feed Screws
Glycon Barrels
QSO Non-Return Valves
Feed Throats
End Caps
Tie Bars & Tie Rods
SmartBarrel
Screw and Barrel
Feed Extruder Screw Design
Field Services
Contact Glycon at (800) 255-9969 for more information.
Get a fast quote http://www.glycon.com/quote
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Final project report on grocery store management system..pdf
Summer training project on drilling fluid at ongc ppt
1. STUDY OF DRILL CUTTING &
FORMULATION OF DRILLING FLUID
Project undertaken at:
Oil and Natural Gas Corporation
Limited (ONGC), Dehradun
Presented by:
Keshar Dev Saini
B.Tech 7th sem
I.T. GGV, Bilaspur
2. CONTENTS
About ONGC
Drilling fluid
Study of drill cutting
CST
MBC
Equipment used
Formulation of drilling fluid
Parameters of drilling fluid
Conclusion
Bibiliography
3. ABOUT ONGC
• Oil and Natural Gas Corporation Limited (ONGC) is the
premier company in the Indian upstream of Petroleum Sector,
headquatered in Dehradun, Uttarakhand.
• It was incorporated on 23rd june, 1993 and became publicly held
company in february 1994.
• It is India’s largest oil and gas exploration and production Company.
It produces 70% of India’s crude oil and natural gas.
• It is involved in 26 sedimentary basins in India.
• Its international subsidiary ONGC videsh Limited (OVL) has 39
projects spread over 17 countries.
4. DRILLING FLUID (MUD)
It is defined as the fluid that is required to carryout
the drilling operation with minimum possible
damages.
5. FUNCTION OF DRILLING FLUID
Colling and lubrication: It is used to cool drill bit and lubricate its
teeth and drill string.
Cutting removal: An important function of mud is to Carry cuttings
out the hole.
Suspension of cuttings: There are times when circulation has to be
stopped. Mud prevents drill cuttings from settling down.
Pressure control: The hydrostatic head of drilling fluid counters the
formation pressure in order to avoid a blowout while drilling.
To reduce the friction between the drill string and the wall of bore
hole.
Stabilise the wellbore to prevent it from caving in
6. TYPES OF DRILLING FLUID
Water based mud
Oil based mud
Gas based mud
PROPERTIES OF DRILLING FLUID
Density of fluid
pH of fluid
Plastic Viscosity
Yield point
Gel Strength
Lubricity
Fluid loss and fluid cake
.
7. STUDY OF DRILL CUTTINGS (of Ahmedabad Asset)
1. CAPILLARY SUCTION TIMER (CST) TEST:
• Used to determine the amount of electrolyte for maximum shale
swelling inhibition
• Evaluating colloidal shale properties to study the reduction of
permeability of the formation around the wellbore.
9. 2. METHYLENE BLUE CAPACITY (MBC) TEST:
This test is performed to determine the amount of active clay in the
drill cutting powder.
Active clay is the clay which is responsible for swelling.
It is determined by using Methylene blue, 3% H2O2, 5N H2So4 and
D/W.
Bentonite equivalent = 1.4*Volume of MB Used
10. RESULT OF MBC
S
N
Well Depth (M) Vol. of MB
used (ml)
Bentonite
equivalent
(ml)
1 3300 -3325 11 15.4
2 3325-3350 9 12.6
3 3350-3365 10 14
4 3365-3380 7.5 10.5
5 3380-3400 5 7
6 MIXED DEPTH 8 8.4
16. 6. LUBRICITY TESTER
• Lubricity is inversely
proportional to Lubricity
coefficient.
• speed of rotation =60 RPM
• Pressure applied = 14psi
• Standard torque reading for water
at 60 rpm = 34
• Lubricity coefficient = (C.F.*reading of torque for mud)/100
• Where, calibration factor (C.F.) = 34/reading of torque with d/w
18. FORMULATION OF DRILLING FLUID
(For Ankleshwar Asset)
34%NaCl brine (34gm NaCl in each 100ml of water)
Name of
Additive
Formulation 1 Formulation 2 Formulation 3
Biocide 0.5% 0.5% 0.5%
Soda Ash 0.1% 0.1% 0.1%
XCP 0.3% 0.35% 0.4%
PGS 3% 3% -
LSP 5% 5% -
MCC - - 5%
Polyoil grade-1 - - 5%
Biocide Used - paraformaldehyde
Soda Ash - Sodium Bicarbonate
XCP - Xanthan gum polymer
PGS - Pre Gelatinized Starch
LSP - Lime Stone Powder
19. PARAMETERS FOR FORMULATION 1:
Name of the parameter Before Hot Roll (BHR) After Hot Roll (AHR)
Specific gravity (S.G.) 1.21 1.21
pH 8.64 8.32
Rheology-
θ600 54 48
θ300 39 34
AV 27 24
PV 15 14
YP 24 20
Gel0 6 5
Gel10 8 6
API (fluid loss) 3.8ml 3.8ml
LC (Lubricity coefficient) - 0.15
20. PARAMETERS FOR FORMULATION 2:
Name of the parameter Before Hot Roll (BHR) After Hot Roll (AHR)
Specific gravity (S.G.) 1.20 1.20
pH 9.30 8.75
Rheology-
θ600 50 61
θ300 36 46
AV 25 30.5
PV 14 15
YP 22 31
Gel0 7.5 12
Gel10 9 14
API (fluid loss) 3.6ml 3.8ml
LC (Lubricity coefficient) - 0.17
21. PARAMETERS FOR FORMULATION 3:
Name of the parameter Before Hot Roll (BHR) After Hot Roll (AHR)
Specific gravity (S.G.) 1.21 1.21
pH 10.6 9.06
Rheology-
θ600 33 30
θ300 24 22
AV 16.5 15
PV 9 8
YP 15 14
Gel0 6.5 7
Gel10 8 9
API (fluid loss) 6.6ml 6.8ml
LC (Lubricity coefficient) - .22
22. CONCLUSION AND RECOMMENDATION
FOR AHMEDABAD ASSET
The drill cutting study in term of CST, MBC and XRD will help in
formulation of effective drilling fluid with low gelation for
successful drilling of the wells of Ahmedabad Asset.
The optimum dose of KCl is 5% to prepare the mud for Ahmedabad
Asset.
FOR ANKLESHWAR ASSET
Formulation-2 is having satisfactory parameters as per the
requirement to drill bare foot in trap wash of padra, Ankleshwar
Asset.
This drilling fluid is having very low solid content that will help to
minimize the formation damage.
23. BIBLIOGRAPHY:-
Lectures by Major Janeshwar Prasad, DGM (Chemistry), IDT,
ONGC, Dehradun.
Drilling Fluid: state of art Ryen Caenn, George V. Chillinger
Composition and properties of oil well Drilling fluids-George
R.Gray, H.C.H. Darley
http://www.Wikipedia.org
http://www.ongcindia.com
