This document summarizes an experiment to prepare drilling mud at a specific density. It includes the aim, introduction, equipment, procedure, calculations, results, discussion, and conclusion. The student prepared mud with a density of 8.61 ppg, which was close to the theoretical density of 8.65 ppg. The small error between the practical and theoretical densities was likely due to minor material losses during mixing. Overall, the experiment was successful in preparing mud at the desired density.

1. Soran university
Faculty of engineering
Petroleum engineering department
Drilling engineering ІІ
Title: mud preparation
Experiment no: one
Name: Sahand Nzar Ahmed
Group: C
Date: 14 Feb 2021
Supervisors: Dr.jagar Ali , Mr.Rebaz
Winter 2021

2. 2
Contents
1. Aim of experiment ................................................................................................................................3
2. Introduction...........................................................................................................................................3
3. Equipment and materials.......................................................................................................................3
4. Procedure ..............................................................................................................................................4
5. Calculation ............................................................................................................................................5
6. Result ....................................................................................................................................................6
7. Discussion..............................................................................................................................................6
8. Conclusion.............................................................................................................................................6
9. Reference..............................................................................................................................................7

3. 3
1. Aim of experiment
Preparing a mud in specific density
2. Introduction
Mud is an essential part of rotary drilling system. Drilling fluid is defined as a circulating fluid in
rotary drilling to perform any or all of the various functions required in drilling operations. To
perform these functions, an efficient drilling fluid must exhibit numerous characteristics, such as
desired rheological properties (plastic viscosity, yield value and low-end rheology, gel strengths),
fluid loss prevention, stability under various temperatures and pressure operating conditions and
also stability against contaminating fluids. The mud should be prepared in a way to nearly
preform all the functions. Mud consists of (clay, water) but sometimes chemicals will add to mud
to make some properties in mud. (Lott, 1987)
3. Equipment and materials
7. Water
Figure1: mud mixer and blender Figure2: mud balance Figure3: cylinder
Figure 4: beaker Figure 5: stirrer Figure 6: clay

4. 4
4. Procedure
 The weight ( density) of both materials ( water , clay ) are known, so the volume of the
both materials can be find by this equation W1V1+W2V2 =WFVF
 The volume of clay are converted to mass by using density rule ρ =
 then the mass of clay are measured on electric balance
 the volume of water are measured inside cylinder
 the measured water pour into the blender then put the blender in the first step of mixer,
then up it to second step and it’s automatically start
 at the top of device there are speed controller which can control the speed of rotation
 start rotation with the low speed and put the clay inside the blender slowly
 when all the call are added to the water increase the speed of rotation to medium speed
then to high speed rotation
 after some few minutes the mud are prepared
 put the prepared mud to the beaker
 put the prepared mud ( which is inside beaker ) into the cup of the mud balance
 Then put the lip on the cup, some mud should be expelled in the lip
 Measure the weight ( density) of mud that should be close to the theoretical density

5. 5
5. Calculation

6. 6
6. Result
Parameters Results
Volume of
water
230 cc
Volume of
clay
5.9 cc
Mass of clay 14.755 gram
Practical
density of mud
8.61 ppg
7. Discussion
The theoretical density of mud is 8.65 ppg but the density of prepared mud is 8.61. It indicates
that there is some error. There are always some error between practical result and theoretical
result. In this lab the error maybe a result of some material losing, for example some clay are
missed when the clay are added into the blender, some clay are remain in the well of the blende.
And maybe the measured water is more or less than 230 cc.
8. Conclusion
At the finally, it can say that the very good result are got. The error is very small and acceptable. As it’s
mentioned in previous part there are always some error between practical result and theoretical
result because it’s manual experiment and small error is something normal.

7. 7
9. Reference
LOTT, W. G. 1987. Drilling mud cleaning method and apparatus. Google Patents.