Image mud balance 4. spatula 3. Mixer

 

 

 

 

 

 

 

 

 

 

 

Image from Fann instrument company.

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Mud Laboratory Manual, Department of Petroleum
Engineering, Covenant University.

REFERENCE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The drilling mud must have the right density so that
it can maintain hydrostatic pressure during drilling operations. It should be
monitored in order to make sure that it does not drop while drilling, because a
drop in the density of the mud will affect the overall weight exerted by the
mud column which could lead to undesired results if left unchecked.

CONCLUSION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

68lb/ft3

470psi/1000

1.85sg

9.05ppg

Density for sample 2

 

450.5psi/1000

65.5lb/ft3

1.50sg

8.75ppg

Density for sample 1

RESULT

 

 

 

 

 

 

 

 

 

 

b.     I ensured that the system
was balanced before taking my reading.

a.     I avoided error due to
parallax while taking readings from the scale on the mud balance.

During the experiment I ensured the
following precautions:

PRECAUTIONS

 

 

9.     For sample 2, I repeated
the same procedure above.

8.     I emptied the content of
the carrying cup into a bowl and washed it clean.

7.     I checked the position of
the sliding rider on the beam and recorded the readings on the scale range.

6.     I adjusted the sliding
weight rider on the mud balance by moving it back and forth until the bubble
was between the two lines which indicated that the system was balanced.

5.     I cleaned off the spilled
mud from the carrying cup and placed the balance on the knife edge.

4.     I poured the mixture into
the carrying cup on the 4 -scale mud balance until it was filled to the brim
and then covered it with the lid.

3.     I used the electric mixer to
mix the sample until I had smooth mixture.

2.     I added 35g of bentonite
into the mixing cup along with my already measured water.

1.     For sample 1, I measured
350ml of water in the measuring cylinder.

PROCEDURES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10g of barite.

350ml of water

35g of bentonite

For sample 2

 

350ml of water

35g of bentonite

For sample 1

SAMPLES USED FOR THE EXPERIMENT

 

 

 

 

 

 

 

 

 

 

 

 

      Fig1. A 4-scale metal mud balance

                  

4.     spatula

3.     Mixer

2.     Measuring cylinder

1.     4-scale metal mud balance

EXPERIMENTAL APPARATUS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

·       
340 – 1190 psi/1000ft

·       
49 – 179 lbs/ft3

·       
0.79 – 2.72 specific gravity (sg)

·       
6.5 – 23.0 lbs/gal (ppg)

The 4-scale metal mud balance has the following scale
range:

The objective of this experiment is to determine the
density of a sample of drilling fluid. For this experiment, the 4-scale metal
mud balance is used to determine the density of bentonite mixed with water
alone and bentonite mixed with barite and water. The balance has a fixed volume
cup at one end of the beam which is balanced by a fixed counterweight at the
opposite end, with a sliding weight rider which freely moves along the
graduated scale. It also has a level bubble mounted on the beam which indicates
when the system is in balance.

INTRODUCTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REFERENCE………………………………………………………………………10

CONCLUSION…………………………………………………………………….9

RESULT…………………………………………………………………………….8

PROCEDURES …………………………………………………………………7

SAMPLE USED FOR THE
EXPERIMENT…………………………….6

EXPERIMENTAL APPARATUS…………………………………………5

INTRODUCTION…………………………………………………………….4

ABSTRACT…………………………………………………………………….2

TABLE OF CONTENT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Density, which is generally defined as weight per unit
volume is a very important property of a drilling mud. It is one of the major
properties of the mud that helps in maintaining hydrostatic pressure. If
pressure is to be controlled, density is the first property to be adjusted
because the pressure exerted by a mud column on a formation depends on it. When
drilling through soft formations, the density should be moderate so as not to
damage the formation while drilling and should be increased when drilling
through high pressured formations.

ABSTRACT

 

 

 

 

 

                              Date Submitted: 21-01-2018.

Date Performed: 19-01-2018.

 

15CN03275

NWOGBO CHINEDU BRIGHT

BY

A REPORT ON EXPERIMENT 1-DETERMINATION OF DENSITY OF A GIVEN
VOLUME OF MUD.

PETROLEUM ENGINEERING LABORATORY

                                                                                
PET327

 

 

 

COVENEANT UNIVERSITY, CANNANLAND OTA, OGUN STATE, NIGERIA.

DEPARTMENT OF PETROLEUM ENGINEERING