Halliburton
performs world’s first automatic internally oriented downhole
tubing conveyed perforation job
Posted: 21 May 2003
Halliburton Energy Services (HES), a business unit of Halliburton,
has just completed a job for Statoil, off the coast of northern
Norway, using its new state-of-the art G-Force Precision Oriented
Perforating System.
The job required accurate orientation of the perforation planes
in the direction of the maximum principle stress to ensure stable
perforation tunnels to overcome a sand production problem that previously
had limited production from the completion.
The result was a safe and flawless onsite job execution guaranteeing
flow assurance with an initial sand free oil production rate of
6,000 standard cubic meters per day (37,600 BOPD), a 20 percent
increase in the overall Norne Field production potential.
"This technological achievement opens new opportunities for
providing oil and gas reservoir solutions for perforating in the
preferred formation stress plane to minimize sand production,”
said Gary Godwin, division vice president, HES, Tools, Testing &
Tubing Conveyed Perforating.
"It also provides methods for either reducing the likelihood
of water coning into the well or increased production from wells
at the same water coning likelihood. The success of this job shows
that dedicated and focused research and development efforts can
pay off and produce dramatic results.
"The G-Force system is one of many enabling technologies embedded
in our PerfPro Process to deliver truly engineered perforated solutions
to our clients.”
This world first was achieved offshore in well B-3H on Statoil’s
Norne Field in Norway, recently. Unexpected sand production had
been observed in several of the Norne Field oil production wells.
Due to this, combined with water breakthrough in the original perforations
in the horizontal B-3H well, the well had been shut in and required
a re-perforation work-over to get it back on line.
The client evaluated various solutions and concluded that Halliburton's
G-Force Oriented Perforating System was the best solution to use
to maximize the sand free production rate and to open new perforation
channels into fresh formation in this particular well. This system
allows perforating in any direction regardless of the gun's position
relative to the casing.
The G-Force system is an advance in technology that overcomes many
limitations with earlier orienting systems that depended on special
finned tandems, eccentric subs and swivels — all of which
were influenced by frictional forces and torque as the guns are
conveyed in the completion leading to inaccuracy in orientation.
The G-Force system can be conveyed on either wireline or pipe and
does not have any external upsets that are greater than the OD of
the gun system; thus it can be utilized for through tubing applications
as well. For the B-3H well a 180 degree phasing of the shots was
selected at four shots per foot with premium deep penetrating MillenniumTM
perforating charges.
The tubing conveyed perforation (TCP) system consisting of five
sections (22 feet each) was deployed using a slick wireline unit
combined with a well tractor pulling the guns in place.
The result of the job was an initial sand free oil production rate
in excess of 6,000 standard cubic meters per day (37,600 BOPD).
The overall operation was done with dynamically positioned drilling
rig Stena Don, according to plan, with an efficiency exceeding 95
percent compared to original time estimates.
All well objectives were met and payback time for the operation
to Statoil was approximately six days worth of production from the
well.
Halliburton Energy Services provides products, services, and integrated
solutions for oil and gas exploration, development, and production.
Capabilities range from initial evaluation of producing formations
to drilling, completion, production enhancement, and well maintenance
– for a single well or an entire field.
With more than 300 service centers in more than 100 countries,
Halliburton possesses the global perspective that is increasingly
important for energy exploration and production.
Halliburton, founded in 1919, is one of the world’s largest
providers of products and services to the petroleum and energy industries.
The company serves its customers with a broad range of products
and services through its Energy Services Group and Engineering and
Construction Group business segments.
For more information see www.halliburton.com.
Posted by Richard Price,
Editor Pipeline Magazine
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