American Oil and Gas Reporter - January 2017 - 91

Production Technology
Venezuela Paraffin Case History

Eagle Ford Asphaltene Case History

400

Chemical
Shut-off

ENERCAT installation
600

350

Pre-ENERCAT

100

WORKOVER

300

WORKOVER

150

400
WORKOVER

Pre-ENERCAT

200

Installment of
5 ENERCAT tools

500

WORKOVER

250

Oil Production (BOPD)

ENERCAT

300
WORKOVER

ENERCAT

200
100

50
A

N D
J
Time (months)

Canada Heavy Oil Case History
RPMs
-95%

ENERCAT installation

Oil Production (BOPD)

WORKOVER

Efficiency
+86%

Typical Scale Case History

ENERCAT installation

Fluid level
in well
+46%

A
Time (months)

ENERCAT

PreOil ENERCAT
Production

ENERCAT

Pre-ENERCAT

30
Red Pump
Failure

Red Pump
Failure

WORKOVER

Oil Production (BOPD)

oil reduction, resulting in overall production
benefits. After the tool's initial success,
Swan says Herman began global sales,
"with more than 4,000 units installed in
23 countries."
Revelant was formed to bring the tool
to U.S. oil customers and to expand the
technology for industrial applications in
water, energy, agriculture and health. Domestic oil industry sales began in June
2016 after its technology became patent
pending, Swan says.
The Enercat tool is a material composite
that is not magnetic or radioactive, and
requires no external power source other
than the ambient heat and pressure from
the oil reservoir, according to Swan. It
has no internal restrictions, and needs no
maintenance or servicing.
The installed tool is placed below the
paraffin and/or asphaltene deposition and
below the depth at which oil viscosity
begins to increase up the wellbore, typically below the pump intake or above the
pump discharge, or as a tail joint at the
end of the tubing string, Swan says. For
scale problems only, depth is not an issue.
The tool also can be installed in series to
handle high oil production rates. Swan
notes that the tools work in virtually any
well that experiences deposition, including
dual completions, and directional, horizontal, steam-assisted gravity drainage,
water source and water injection wells.
According to Swan, the Enercat comes
in two versions. The TubingTool is designed
for downhole installation in the production
tubing string. It is installed during a completion operation or workover as an industry-standard 1.2-meter (four-foot) pup joint
that meets required installation specifications.
Handling capacities vary by tubing size:
2⅜ inches at 30 barrels a day, 2⅞ inches at
35 bbl/d and 31⁄2 inches at 70 bbl/d. The
TrimTool version is installed without pulling
the tubing string by attaching the tool to
the bottom of the pumping assembly on a
producing well. This allows installation
during well servicing, independent of
workovers, making it ideal for low-producing wells, he says. The 12-inch version
handles as much as 10 bbl/d, and the 28inch version handles 15-20 bbl/d.
Revelant is partnering with both the
research and application ends of the spectrum to refine the technology for maximum
benefit, Swan says. The company is working with the faculty at Colorado State
University under the direction of professor

+28%
0
1

20
Time (days)

N
D J
Time (months)

M J J

A S

Paraffin, asphaltene, scale and heavy oil case history graphs show stabilization and increased production at the end of standard workovers after installing the Enercat™ downhole tool from Revelant Nanoﬂuidity Technology.

Amber Krummel, Revelant's technology
officer. Her research team is working out
the details of the physics and chemistry
underpinning the Enercat. A refined ability
to measure, tune and focus the technology
will allow Revelant to address specific
problems with fluid stability in the oil
and gas industry by expanding the tool's
application to target specific molecules,
such as barium sulfate, and to solve even
larger problems associated with water.
In terms of the tool's application, Revelant has partnered with 4B Production
Enhancement, according to Swan. Their

downhole tool, the Stinger, is a tubingconveyed tool designed to clean the inside
of the casing and perforations of oil, gas,
disposal or injection wells. "The Stinger
cleans it and the Enercat keeps it clean,
resulting in less production downtime
and smoother operations," Swan says.
Reliable long-term benefits are the
end result of Enercat implementation.
"In more than 80 percent of the installations, the tool's performance has been
successful. Some tools have been in wells
for more than 10 years and still are working," Swan points out.
❒

Devon Energy Praises Test Of Leonard Shale
OKLAHOMA CITY-A two-well
Leonard Shale stacked spacing test in Southeast New Mexico drilled by Devon Energy
Corp. resulted in initial 30-day production
rates averaging 1,800 barrels of oil equivalent
a day per well, of which 75 percent was
light oil, the company reports.
Devon says its Thistle spacing pilot
tested 400-foot vertical spacing between
the Leonard Shale B and C intervals in the
southwest corner of Lea County, N.M. The
Thistle wells were drilled with 7,000-foot
laterals at a cost of about $6 million each.
Early results from the Leonard Thistle
pilot indicate minimal interference between
wells, Devon observes, suggesting potential
for joint development of multiple intervals
in this portion of the Leonard play. With
the success of this stacked spacing test,

Devon says it is raising its risked inventory
in the Leonard Shale to 950 gross locations,
adding that this represents nearly 20 percent
growth from previous estimates and assumes six wells per surface location.
Devon says it has 60,000 net surface
acres in the Leonard Shale, with gross
pay ranging up to 1,100 feet and as many
as three landing intervals, leading it to
estimate a potential for more than 1
billion boe in recoverable resource.
"The strong flow rates from the Thistle
spacing pilot are another example of the
positive rate of change we are achieving
in the Delaware Basin," states Devon
Chief Operating Officer Tony Vaughn.
"In the coming year, we plan to continue
to accelerate drilling in our world-class
Delaware Basin and STACK assets." ❒
JANUARY 2017 91

American Oil and Gas Reporter - January 2017

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