Ph it shows that the ph will have no

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ph determination is very important because it helps us to
prevent corrosion and to control other mud properties like viscosity, etc. The
optimum control of some mud systems is based on ph, as is the detection and
treatment of certain mud contaminants. Other reasons for ph control include
maintenance of lime-treated muds, effective use of thinners, and corrosion mitigation.

CONCLUSION

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The addition of salt to the mud (sample 2), which is a
contaminant that can be encountered by the mud during drilling operations,
affected the mud by causing a decrease in the ph value. If the value had been
further decreased, it could corrode the casing and drilling equipment when
used.

In the results gotten from the experiment for sample 1, it
shows that the ph will have no significant effect on the viscosity of the mud
since the ph is within the range of 7-9.5ph. Also, the ph of sample 1 will
provide good hole stability and mud property control when used to minimize
shale problems.

DISCUSSION

 

 

 

 

 

 

 

 

 

 

 

Electrometric: 7.3ph at 26.6?C

Colorimetric: 7ph

Sample 2

 

 

 

Electrometric: 9.2ph at 26.4?C

Colorimetric: 9ph

Sample 1

RESULTS

 

 

 

2.  
After
using the electrode, I covered it with the rubber cap.

1.  
I
never let the probe tip become dry. I always kept the glass bulb of the probe
moist for fast response.

PRECAUTION (ELECTROMETRIC)

 

 

 

2.  
I
made sure the colour of the test paper was stabilized before matching it
against the standard colour chart.

1.  
I
avoided sticking the ph paper into the sample.

PRECAUTION (COLORIMETRIC)

 

 

 

8.  
I
left the probe in the mixture until the reading stabilized and then took my reading.

7.  
I
rinsed the probe with distilled water and immersed the probe into the mixture.

6.  
I
set the temperature compensation manually by adjusting the temperature over a range
of 0?to 100?C.

5.  
I
pushed the ph/mv key until the annunciators indicated the desired mode.

 

4.  
I
poured the mixture into a sample cup and
turned the ph meter on.

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

2.  
I
added 25g 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.

PROCEDURE (ELECTROMETRIC)

 

 

5.  
After
the colour of the test paper stabilized, I matched the colour of the upper side
of the paper which had not had any contact with the mud, against the standard
colour chart.

4.  
I
poured the mixture into a sample cup and tore off and placed a short strip of
ph paper on the surface of the sample.

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

2.  
I
added 25g 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.

PROCEDURE (COLORIMETRIC)

 

 

 

 

 

 

 

 

 

 

5g of salt (CaCl)

350ml of water

25g of bentonite

Sample 2

 

 

350ml of water

25g of bentonite

Sample 1

SAMPLES USED FOR THE EXPERIMENT

 

Fig 4. A diagram of a ph meter.

                     

 

 

         Fig 3. Diagram
of a ph paper.

                      

 

       Fig 2. Diagram
of a weighing balance.

       

5.  
Weighing
scale

4.  
Measuring
cylinder

3.  
Spatula

2.  
Mixer

1.  
Ph
meter

 Electrometric method

 

       Fig1.diagram of a mixer

                 

 

5.  
Weighing
scale

4.  
Measuring
cylinder

3.  
Spatula

2.  
Mixer

1.  
Ph
paper

   Colorimetric Method

EXPERIMENTAL APPARATUS

 

 

 

 

 

 

 

 

 

 

 

 

Ph is the logarithm of the reciprocal of the hydrogen ion
concentration in gram moles per litre. In a neutral solution, the hydrogen ion
(H+) and the hydroxyl ion (OH-) concentrations are the same, with each equal to
10-7. A ph of 7 indicates that it is neutral. A ph below 7 indicates
an increase in acidity, while a ph above 7 indicates an increase in alkalinity.
The methods used to determine the ph in this experiment are the colorimetric
method and the electrometric method.

INTRODUCTION

 

 

 

 

 

 

 

 

 

 

Contents
ABSTRACT. 2
INTRODUCTION.. 4
EXPERIMENTAL
APPARATUS. 5
SAMPLES
USED FOR THE EXPERIMENT. 7
PROCEDURE
(COLORIMETRIC). 8
PROCEDURE
(ELECTROMETRIC). 8
PRECAUTION
(COLORIMETRIC). 9
PRECAUTION
(ELECTROMETRIC). 9
RESULTS. 10
DISCUSSION.. 11
CONCLUSION.. 12
 

 

 

 

 

 

 

 

 

 

 

Ph or hydrogen ion concentration is used to express the degree
of acidity or alkalinity of a substance. In the case of drilling mud, they are
always designed to be alkaline (i.e., a ph>7). Therefore, it is very
imperative that the ph is determined, because having a high concentration of
hydrogen ions in our drilling mud, poses serious problems. The viscosity of
bentonite will be least affected if the ph is within the range of 7 to 9.5.
Above this, the viscosity will increase and may give viscosities that are too
high for good drilling properties. Also, for reducing shale problems, a ph of
8.5 to 9.5 appears to give the best hole stability and control over mud
properties. Corrosion is also another problem caused by low ph. The corrosion
of metal is increased if it comes into contact with an acidic fluid. So, a higher
ph would be desirable to protect pipe and casing from corrosion.

ABSTRACT

 

 

                              Date Submitted: 29-01-2018.

Date Performed: 26-01-2018.

 

15CN03275

NWOGBO CHINEDU BRIGHT

BY

A REPORT ON EXPERIMENT 4-DETERMINATION OF HYDROGEN ION CONCENTRATION OF A
GIVEN VOLUME OF MUD.

PETROLEUM ENGINEERING LABORATORY

                                                                                
PET327

 

 

 

COVENEANT UNIVERSITY, CANNANLAND OTA, OGUN STATE, NIGERIA.

DEPARTMENT OF PETROLEUM ENGINEERING

                                                                                                                                   

 

 

 

 

 

 

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