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Explanation & Answer
Attached.
Abdulaziz K. Alhawas
Dr. Fatemeh Belyadi
Laboratory Experiment No. 7
Red Lime Muds
West Virginia University
Petroleum and Natural Gas Engineering
March 7, 2018
Introduction and Objective
Red lime muds is a clay-based water mud that used tannates
(from tannic acid) as clay deflocculant and mined lignite for
fluid-loss control, usually with lime. The tannates were usually
quebracho, which is red at high pH. Red muds were used extensively
in the 1940s and 1950s. In addition, Q-Broxin was used instead of
Quebracho.
The objectives of the experiment were to analyze the red lime
in a drilling fluid. In addition, plot volume of filtrate versus
square root of time and produce one curve for each group.
Equipment
Figure 4:
Dish.
ON/OFF
Figure 1:
Blender.
Figure 7:
Viscometer.
Figure 2:
Graduated
cylinder.
Figure 8:
Viscometer
cup.
Figure 3:
Blender
cup.
Figure 9:
Mud balance.
0.00g
PRINT
Unit
Figure 6:
Caliper.
Figure 5:
Balance.
Figure 10:
Resistivity
meter.
Figure 11:
Filter
press.
1
Procedure
First of all, an appropriate quantity of Aquagel mud with
22.5 ppb density was prepared. Secondly, mud density in ppg was
measured using the mud balance. Furthermore, mud plastic and
apparent viscosities and gel strength of the drilling fluid was
measured using the viscometer for different RPM. Moreover, 600,
300 RPM and 10 second gel values were recorded for the mud sample
(phase 1). A specific amount of lime was added while mixing the
sample and the previous procedures were repeated (phase 2). A
specific amount of Q-Broxin was added while mixing the sample and
the previous procedures were repeated (phase 3). A specific amount
of starch was added while mixing the sample and the previous
procedures were repeated (phase 4). Consequently, filter press was
prepared at 100 psig pressure was applied and instantly volume of
filtrate was recorded at every minute for a total of 7.5 minutes
after that the used mud was appropriately discarded. Moreover, the
mud cak...