American Oil and Gas Reporter - October 2017 - 53

SpecialReport: Oil Field Chemistry
20,000 feet, friction is a major concern in
drilling, suggests Elan Watson, Western
Hemisphere manager for Drilling Specialties
Co., a division of Chevron Phillips Chemical
Company LP. To minimize wellbore instability, Drilling Specialties has developed a
latex-based miscible mud conditioner designed to significantly increase mud inhibition. Watson says it is particularly effective
when used in conjunction with the company's Soltex® additive.
"In an East Texas field trial, we used
that combination in a water-based mud
to drill a problem formation where the
two offsets had shale stability issues,"
Watson relates. "In the first offset, which

had reactive clays, the operator had trouble
pulling the drill string out of hole. He
also could not get the casing to bottom,
so he had to cement the casing in place.
After drilling through the cement to begin
the next section, the bit got stuck, and
the well had to be abandoned."
Changes to the drilling fluid enabled
the second well to be drilled and cased
successfully, but tripping in and out of
the hole and running casing took excessive
rig time, Watson continues. "In the third
well, which used the new wellbore conditioner additive as well as our proven
shale stabilizer, we got in and out of hole
and ran casing without any issues," he

says. "That saved a lot of rig time."
In some applications, Watson predicts
the new additive will enable operators to
switch from oil-based to water-based
muds. "WBMs have higher fluid costs,
but they reduce overall drilling costs," he
says. "They can be mixed on site, so
they eliminate the need to truck mud
from a mixer to the well. They also reduce
the costs associated with removing oil
from the cuttings and trucking the cuttings
off site for disposal."
The multipurpose mud conditioner is
easy to mix using standard equipment
and is compatible with a wide range of
fluid systems, Watson assures.

OCTOBER 2017
The "Better Business" Publication Serving the Exploration / Drilling / Production Industry

ARTICLE

Oil Field
Chemistry
Page 66

Page 42

Clint Walker
Chairman PBPA
"All in all, I think we
are in a better place
now than we were a
year ago."
Page 86

REPRINTS

Berry Mullennix
Chairman OIPA
"The spacing and
pooling rules, and
now long-lateral
drilling, make
Oklahoma one of
the best states in
which to operate."
Page 94

John Mummery
Chairman COGA
"Denver has become a major hub
for oil and gas innovation nationwide."
Page 98

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American Oil and Gas Reporter - October 2017

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