2
ORGANIC/SYNTHETIC BASED FLUID TEST PROCEDURE
Modified SOP for LE SUPERMUL Test
1)
Dry HTHP Cell; Insert and tighten stem valve; Invert and place in stand
2)
Add a measured amount of mud sample (typically 5 mL)
3)
Add DI water (50 mL)
4)
Add 5 mL NaOH (5N); Put lid on and lock in place with set screws
5) Also, place cell stem in lid.
6)
Place collection apparatus (HPK unit) on cell stem, and lock in place with pin.
7)
In collection apparatus bowl add 30 mL Boric Acid (2% aq. soln.) and 7 - 10 drops bromocresol
green- methyl red indicator (should be a
faint
pink
color)
8)
Place HTHP cell/with attached collection apparatus into the pre-heated
*
heating jacket, keeping
the cell inverted.
Open the stem-valve
connecting HPK and HPHT cell one-quarter turn.
9)
After first bubble appears in boric acid solution, start a 60 minute timer.
10)
After color change
**
(
faint green
),
close stem-valve
, lift cell/with collection apparatus out of the
jacket, and place in cell holder.
11)
Carry out the titration in the collection apparatus bowl using N/50 H
2
SO
4
(2)
(solution should turn
from
faint green
to
faint
pink
color). The solution can be optionally transferred to a 50 - 100 mL
beaker, a small magnetic stirring bar added, and the solution titrated while mixing on a magnetic
stirrer.
12)
To calculate lb/bbl LE SUPERMUL:
a.)
mL LE SUPERMUL/ mL mud
Divide the mL of Acid used, by the standard coefficient
(1)
; then divide this value by the mL of mud
used. [(mL Acid/SC)/mL Mud]
b.)
g LE SUPERMUL/mL mud
Multiply the value in step (a) by the density of LE SUPERMUL (0.924 g/mL)
c.)
lb/bbl of LE SUPERMUL
Multiply the value in step (b) by 350 mL (~ 1 bbl)
13) Clean-up is simply done by washing cell and collection apparatus bowl with tap water.
*
The Heating Jacket should be preheated to 300
o
F
**
The color change timing may vary from 30 to 60 minutes, depending on the LES concentration.
Notes
:
1.
The standard coefficient
(SC)
should be determined by performing the test on weighed
amounts of LE SUPERMUL i.e. 0.5g, 1.0g, 1.5g
2.
If more than 30 mL of acid is required, test should be redone with 2.5 mL of sample.
