American Oil and Gas Reporter - December 2015 - 101

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ConventionCoverage: Oklahoma Independent Petroleum Association
want to drive the conversation."
He added, "Messages should be tailored
to create a climate of trust. You want to be
credible. It is not enough just to be loud."
While grass-roots efforts that speak
directly to people about issues important
to them are valuable, Pauley also praised

grass tops. "Grass tops are the leaders of
grass-roots organizations," he explained.
"Grass-top (campaigning) takes it up a
level and works with the leaders in a
community."
Finally, Pauley said, "After you raise
money, have done your research and de-

veloped your message, there is nothing
short of good old honest effort. Effort is
what brings this all full circle. Even if
you have money and a message, if you
don't provide the effort that goes along
with that, you will not have a successful
campaign."
r

Technology Brings Improved Efficiency
RIDGEDALE, MO.-Prospering in today's oil and gas environment requires
recovering the greatest amount of hydrocarbons for the least possible cost. In an
Oct. 19 general session presentation at
the Oklahoma Independent Petroleum
Association's fall conference at the Big
Cedar Lodge, Mid-Continent Technology
Manager Mark A. Parker discussed Halliburton's strategy for integrating refracturing with new and infill wells to increase
recovery.
During the Oct. 20 general session,
Albert "Chip" Ollre, president of GE Oil
& Gas ESP Inc., reviewed advances in
electric submersible pump technology.
In two nontechnical presentations,
Michael France, managing director at
First Reserve Corp. in Houston, examined
private equity financing in the energy
sector, and Oklahoma Tax Commission
Executive Director Tony Mastin went
over the state's new online registration
and tax remission system.
Even with steady improvements in
horizontal well completion designs over
the past decade, Parker said fiber optic
monitoring indicated only about 60 percent
of clusters initiated fractures across all
major North American basins. Furthermore, he said, microseismic monitoring
provides evidence of unequal fracture
geometry caused by reservoir heterogeneity, while many factures lose conductivity because of near-wellbore damage.
As a result, "We estimate two-thirds
of stages die early in the life of a well,"
Parker told OIPA. "The combination of
these makes it very hard to exceed 8 percent recovery in oil basins. That leaves
92 percent of the reservoir still to be exploited."
Parker said Halliburton organized wells
into three categories:
* Understimulated wells where design
factors such as small numbers of frac
stages or perforation clusters, or small
fluid volumes or proppant mass left by-

passed reserves;
* Lost connectivity wells; and
* Parent wells that needed to be refractured to mitigate pressure depletion
and "bashing" when adjacent infill wells
were stimulated.
Halliburton has developed a process
it named ACTIVATESM refracturing service, which Parker described as "a journey
from refrac pilots to balanced portfolios
of new wells, infill wells and refracs.
We collaborate with operators to perform
four steps of screening, design, execution
and diagnostics during the refrac pilot.
Then we leverage those learnings and
diagnostics to develop an integration plan
to incorporate refracs for field development.
"This process helps to reduce the predictability risk of refracturing," he added.
Parker said Halliburton performed rate
transient analysis and force ranked wells
with their decline curves to evaluate
reservoir quality and select the best candidate wells.
An important factor in designing tailored refracs is strategic perf location.
Parker said Halliburton created a process
log interpretation of the lateral developed
from a calibrated vertical log called

FracInsight® service.
The key to a successful refrac, Parker
went on, is diverting the frac fluid to
where it is needed in the wellbore. He
said Halliburton had developed AccessFrac® service, which he said "will completely degrade with time and temperature."
He added, "As part of the AccessFrac
service, Halliburton has developed a proprietary process called Pressure Sink Mitigation. This allows us to plug off the
depleted sections such as the heel of a
lateral, and move the stimulation fluid to
new or unstimulated perforations toward
the toe of the lateral. The diversion
material degrades after the treatment to
restore production from the perforation
clusters that received it."
On the refrac pilots, Parker said Halliburton used fiber-coil tubing, microseismic, and microdeformation monitoring
to validate the stimulation and production
efficiency of the refrac. He said this allowed it to apply what it learned from
the pilot to large-scale refrac development
for the field.
Better ESPs
Since their introduction nearly a century

Mark A. Parker (left) answers a question from
William Diggs with SK
Plymouth Co. in Tulsa,
following his presentation to the Oklahoma Independent Petroleum
Association's fall conference, Oct. 18-20, at
Big Cedar Lodge, south
of Branson, Mo. Parker,
who is Mid-Continent
technology manager for
Halliburton, presented a
strategy for integrating
refracturing with infill
drilling to increase recovery percentages.

DECEMBER 2015 101

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