## After Plastic viscosity (cp), PV = 600

After
the rheology experiment was undertake we were able to measure the various
internal resistance values of a mud slurry to flow, with increasing viscosity and
resistance values.

CONCLUSION

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5.   22

4.   27

3.   45/2 = 22.5

2.   37 – 8 = 29

1.   45 – 37 = 8

For
rheology without barite:

5.   43

4.   45

3.   56/2 = 28

2.   54 – 2 = 52

1.    56 – 54 = 2

For
rheology with barite:

5.   Gel strength, 10 minutes
(lb/ft2) =Maximum dial
deflection after 10 minutes

4.   Gel strength, 10 second
(lb/ft2) = Maximum dial deflection after 10 seconds

3.   Apparent viscosity (cp),
2

2.   Yield point (lb/100ft2),
YP = 300 RPM reading – PV

1.   Plastic viscosity (cp), PV

CALCULATIONS

TABLE 1.0

RHEOLOGY WITH BARITE

RHEOLOGY WITHOUT BARITE

600RPM

56

45

600RPM

300RPM

54

37

300RPM

60RPM

52

26

60RPM

30RPM

51

23

30RPM

10SEC

45

27

10SEC

10MIN

43

22

10MIN

The following
table below have an accurate representation of values gotten from the rheology
tests conducted both with and without barite.

RESULTS

3.   Also detach the splash
guard and wipe down the bob shaft. Wash and rinse all equipment compartments
thoroughly

2.   Detach the bob

1.   After concluding the test,
take out the sleeve

MAINTENANCE

Now for the 10 minute gel strength, mix the
fluid again and wait for about 10 minutes before taking down the maximum dial

Step12:

When the sleeve is done rotating,
wait another ten seconds to turn the power on whilst observing the dial
simultaneously, record the optimal dial deflection reading before the gel cuts
at the 10 second breach

Step11:

Whirl the knob to read a gel setting
then turn off the power supply

Step10:

Turn the knob to 300rpm setting, then
stir the sample again for a few more seconds

Step9:

Twist the knob to 600rpm, then await
the dial to approach a balanced reading, then record the reading at 600rpm

Step8:

Adjust the knob to stir so the sample
is mixed properly but only for some seconds

Step7:

Switch on power supply

Step6:

Position the sample in a cup and dip
the rotor until it reaches the fill line on the sleeve by elevating the
platform

Step5:

Plug the viscometer to a powered
socket outlet

Step4:

The sleeve should be placed against
the rotor above the bob, the main function of the thread is to ensure accurate
attachment and balanced uniformity every single time

Step3:

Tighten the recommended bob with the
narrow end facing the splash guard

Step2:

The splash guard should be positioned
upon the bob whilst the shortened tube faces the bearings

Step1:

PROCEDURE

Velocity is managed with an adjustable
knob and various shear values are laid out on a magnifying dial from which
values can be observed by taking a closer look.

This apparatus establishes flow
attributes of slurry samples in conditions of shear and stress due to time over
different time values of course such as temperature and pressure.

This device is basically used to measure
the viscosity of a given fluid with the pattern of a rotating motion of a
system.

ROTARY
VISCOMETER:

APPARATUS

Asymmetry between the two is measured with
the slurry approaching a gel like thickness due to stir

SECONDLY:
After a 10 minute time frame has been observed with the mud at rest in the
slurry cup

FIRST:
After stirring of the slurry in the mud cup

The readings to be taken are of two types;

The gel strength of the slurry is measured
at minimum shear stress values needed to give lapses.

The following above may vary due to
preference of the conducted test, it can be changed effortlessly with the aid
of an adjustable knob, without obstructing the fluid in motion due to velocity
induced by the motor.

·
30rpm

·
60rpm

·
300rpm

·
600rpm

Basically we have the following
revolutions per minute. Speed test rates include;

INTRODUCTION

TABLE 1.0

LIST OF
TABLES

This experiment was conducted in
succession with experiment one, in order to measure the internal resistance of
a fluid to flow, where there is a significant increase in viscosity due to high
resistance.

ABSTRACT

CONCLUSION…………………………………………………10

CALCULATIONS………………………………………………9

RESULTS………………………………………………………..8

PROCEDURE………………………………………………….6

APPARATUS…………………………………………………..5

INTRODUCTION…………………………………………….4

ABSTRACT……………………………………………………..3

CHAPTERS

LIST
OF TABLES………………………………………………3

TITLE
PAGE…………………………………………………….1

PAGE
NUMBER

REPORT
CONTENTS

DATE OF EXPERIMENT: 19-01-18

GROUP F

MATRICULATION NUMBER: 15CN03283

PRESENTED BY OKOJIE JEFFREY

EXPERIMENT
2: RHEOLOGY

PETROLEUM ENGINEERING LABORATORY

CANAANLAND, OTA OGUN STATE

COVENANT
UNIVERSITY

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