Drilling fluid
technology ,engr DR e.e.okoro
Department of
Petroleum Engineering, Drilling mud manual,
ENGR seteyeobot ifeanyi
REFERENCES
The optimum control of some mud system is based on pH, as
is the detection and treatment of contaminants.
From the above experiment we were able to determine not just the ph but
also the temperature and the mv, we were able to test for the alkalinity and
the acidity of the mud ,with the addition of a salt (nacl) we saw that there
was a change in the ph of the mixture ,we also concluded that the electrometric method is more reliable than
the colorimetric method ,at the end of
the experiment we were able to obtain the above results
CONCLUSION
·
I ensured that I rinsed the probe with
distilled water before putting into the mud to take the reading
·
I ensured that the litmus paper did not stick
into the mud
·
I ensured that the colour of the test paper
stabilized before I took my readings
PRECAUTIONS
From the results from the
experiment we can see that there was a major variation between the ph of the
litmus paper and that of the ph meter,we would most likely consider the result
of the ph meter because that of the litmus paper is unreliable, we also observed that the ph became more acidic from
9 to 7 for the litmus paper and and increase in acidity from 8.5- 7.40,which
means that with the addition of salt it made the mixture more acidic
ANALYSIS
PH WITH LITMUS
PAPER
PH WITH PH METER
TEMPERATURE WITH PH
METER
7
7.40
FINAL: 28.ºc
Sample
2
PH WITH LITMUS
PAPER
PH WITH PH METER
TEMPERATURE WITH PH
METER
9
8.5
FINAL: 26.8ºc
Sample
1
RESULTS AND ANALYSIS
8.
Then,
I took my readings for temperature, mv and ph
7.
I
rinsed the probe with distilled water and immersed the probe into the solution
and allowed it to stabilize.
6.
I
pushed the ph/mv key until the annunciators indicated the desired mode.
5.
Using
the pH-meter, I turned it on with the OFF/ON key.
4.
After
the color of the paper stabilized, I reported the value of the pH using the
standard chart.
3.
I
tore off and placed a short strip of PH paper on the surface of the sample.
2.
I
turned the water, nacl (salt) and bentonite into the mixing cup and mixed with
the mixer until there were no lumps.
1.
I
measured 3g of salt.
FOR EXPERIMENT 2 (25g
of bentonite +350ml of water + 3g of nacl) (SAMPLE 2)
9.
Then,
I took my readings for ph, temperature, and mv
8.
I
rinsed the probe with distilled water and immersed the probe into the solution
and allowed it to stabilize.
7.
I
pushed the ph/mv key until the annunciators indicated the desired mode.
6.
Using
the pH-meter, I turned it on with the OFF/ON key.
5.
After
the color of the paper stabilized, I reported the value of the pH using the
standard chart.
4.
I
tore off and placed a short strip of PH paper on the surface of the sample.
3.
I
turned water and bentonite into the mixing cup and mixed with the mixer until
there were no lumps.
2.
Using
a weighing balance, I measured 25g of bentonite.
1.
I
measured 350ml of water with the measuring tube.
FOR EXPERIMENT 1 (25g
of bentonite +350ml of water) (SAMPLE 1)
PROCEDURE
Fig3. Electric mixer fig4. Weighing
balance
Fig2 ph meter
fig1. Ph paper
5.
Litmus
paper
4.
pH
meter
3.
Weighing
balance
2.
Measuring
cylinder
1.
Mixing
cup and electric mixer
EQUIPMENT AND APPARATUS
This is an instrument that determines the pH of
an aqueous solution by measuring
the electro potential generated between a special glass electrode and a
reference electrode. The meter has a range of 0 to 14 pH unit.
2.
ELECTROMETRIC METHOD (PH METER) ;
Here the ph paper is infused
with dyes that exhibit different colours when exposed to solutions of varying
ph. High concentrations of salt in the sample may alter the colour developed by
the dyes and cause the estimate of ph to be unreliable
1.
COLORIMETER METHOD (PH PAPER):
The term ph is used to express the concentration of
hydrogen ions in aqueous solution. Ph is the logarithm of the reciprocal of the
hydrogen ion concentration in gram moles per litre The ph as a property of a
drilling fluid is a very important property of the drilling fluid as the
control and use of some mud systems is based on the ph as the detection and
treatment of some contaminants. In a neutral
solution the hydrogen ion {H+} and the hydroxyl ion OH- concentration are
equal, ph of 7 means it is neutral, if it goes below 7 it means its increasing
in acidity while if it goes beyond 7 it is increasing in alkalinit .the ph can
be determined using ;
INTRODUCTION
8
REFERENCES
7
CONCLUSIONS
6
PRECAUTIONS
5
RESULTS /ANALYSIS
4
PROCEDURE
3
EQUIPMENT AND APPARATUS
2
INTRODUCTION
1
ABSTRACT
TABLE OF CONTENT
The ph as a property of a drilling fluid is a very
important property of the drilling fluid as the control and use of some mud
systems is based on the ph as the detection and treatment of some contaminants.
The term ph is used to express the concentration in gram moles per litre.in
this experiment we will be determining
the ph of the drilling fluid using the colorimetric method ,which is the
use of ph paper , and also the electrometric
method
ABSTRACT
DATE SUBMITTED :29-01-2018
DATE PERFORMED :27-01-2018
15CN03290
OLUWATOTAN OLATUNJI
DANIEL
GROUP G
HYDROGEN ION
CONCENTRATION TEST
PETROLEUM ENGINEERING
LABORATORY
PET327
COVENANT UNIVERSITY
DEPARTMENT OF PETROLEUM
ENGINEERING
