American Oil and Gas Reporter - October 2015 - 98

The thin, slick and impermeable filter cake to the right shows the dramatic change that
tends to occur once the Drill-Sure® oil-based mud additive is part of the fluid system. According to provider Drilling Specialties Company, the additive, which is designed to control fluid loss in high-pressure, high-temperature wells, also reduces torque and drag.

cost," Watson observes. "Also, the product
treatment levels are low enough that the
operator will not see an increase in the
mud's low-gravity solids content. This
helps with rheology, preserving penetration
rates, and reducing the wear on downhole
tools."
According to Watson, Drill-Sure OBM
additive improves a drilling fluid's electrical stability, which reduces the need to
buy dedicated stabilizers. "We also have
seen reductions in torque and drag because
once Drill-Sure OBM additive is added,
the filter cake tends to be thin and slick,"
he comments.
The product can pass through centrifuges without being removed, making
it easy to maintain the required concentration, Watson adds. He points out that
it is manufactured in the United States.
In the first field trial, which took place
in the Eagle Ford Shale in South Texas,
Drill-Sure OBM additive was added to a
recycled mud with a concentration of
low-gravity solids and a combination of
alternative fluid loss additives. "We ceased
using traditional uintahite-based additive
products when we started the trial, and
went exclusively with the Drill-Sure OBM
additive. The well was drilled with the
same fluid loss requirement as the previous
offsets, but only 4,700 pounds of DrillSure OBM additive was required to
achieve it. This was a 32 percent reduction
in product usage," Watson reports.
"The second trial took place in the
same field, but this time we started with
a new OBM," he continues. "With the
new mud, the operator noticed a significant
reduction in torque and drag from the
compressed filter cake, which enabled
him to pull off bottom with 40,000 pounds
less weight when the well reached total
depth.
"In the third trial, which took place in
western Oklahoma, we saw a 42 percent
decrease in product usage when utilizing
Drill-Sure OBM additive," Watson says.
"In the final trial, in the Bakken, we saw
a 32 percent reduction. Across all the
trials, these product usage reductions
translated to a lower mud bill than the
offsets."
❒

Coming In November

The Oil & Gas Computing special
reports examine trends in high-performance computing technology in
data-intensive exploration, drilling
and production applications, advanced analytical tools, depth migration, 3-D attribute mapping, reservoir
modeling, data management and
cloud computing.
98 THE AMERICAN OIL & GAS REPORTER



American Oil and Gas Reporter - October 2015

Table of Contents for the Digital Edition of American Oil and Gas Reporter - October 2015

Contents
American Oil and Gas Reporter - October 2015 - Cover1
American Oil and Gas Reporter - October 2015 - Cover2
American Oil and Gas Reporter - October 2015 - 3
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American Oil and Gas Reporter - October 2015 - Contents
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American Oil and Gas Reporter - October 2015 - Cover3
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