Halliburton's Sperry-Sun installs 25th Flexrite Multilateral Junction
Posted: 4 September 2003
Sperry-Sun, a product service line of Halliburton Energy Services
and a proven leader in multilateral installations and reservoir
deliverability, recently completed the installation of its 25th
FlexRite isolated tie-back multilateral junction (part of the SperryRite
advanced reservoir drainage service) for Norsk Hydro on the Troll
Olje field in the North Sea.
The TAML (Technology Advancement for Multilaterals) level 5 multilateral
system helps increase access to additional reserves, reduce costs
and installation time compared to single wells, and provides a low-risk
junction isolation alternative.
Halliburton Energy Services is a business unit of Halliburton.
"Halliburton continues to maximize reservoir drainage for customers
by establishing the most efficient and cost-effective drainage architecture
for the unique characteristics of each individual reservoir,"
said Jorunn Saetre, Halliburton Energy Services Country vice president
for Norway. "The installation of the 25th FlexRite multilateral
junction for Norsk Hydro further proves our commitment to leading
technology for the industry."
Norsk Hydro has chosen multilateral wells to reach the most inaccessible
oil reservoirs of the Troll Olje field, where the oil-bearing layers
can be as thin as 10 meters. These thin layers require the oil to
be drained through long horizontal wells. By having several conduits
reaching into the shallow reservoir, it is possible to produce more
oil at a lower cost. Norsk Hydro, together with Halliburton, has
tailored a multilateral well solution that prevents sand production
and allows several reservoir sections to be branched together in
pressure-tight junctions. Development of the FlexRite system commenced
in March 2000 and the first installation was completed in January
2001.
"Nearly all the wells drilled on Troll Olje today are multilaterals,
and even tri-lateral wells are becoming commonplace. Our next step
is a quad-lateral this summer," says Tor Madsen, section manager
for Troll Petroleum Technology, Norsk Hydro.
Both Norsk Hydro and Sperry-Sun reached a milestone in the application
of multilateral technology when FlexRite junction number 25 was
installed on the Troll Olje field. These junctions have been installed
in 19 wells with two lateral branches and three wells with three
lateral branches, all from semi-submersible rigs. Additional multilateral
wells are planned for Troll Olje including a quad-lateral, three
triple-laterals, and a dual-lateral with intelligent completion
at the forefront. The FlexRite multilateral system development is
an excellent example of how an operator can develop and utilize
new technology in cooperation with a preferred supplier.
On average, a FlexRite multilateral junction is completed in five
days. When compared to installations of additional templates and
drilling of additional wells to access this oil, Norsk Hydro have
cut the costs dramatically and more than doubled the amount of additional
reserves produced. This is a reflection on multilateral technology
in general, and the opportunities that lie in the dedicated use
of this technology.
Norsk Hydro is a leading energy and materials company, based in
Oslo, Norway With more than 50,000 employees in 58 countries worldwide,
Norsk Hydro's operations are divided into three main areas of expertise:
Oil and Energy, Aluminum, and Agri.
See more on www.hydro.com.
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, stimulation, and well maintenance - for
a single well or an entire field With more than 300 service centers
in more than 90 countries, Halliburton possesses the global perspective
that is increasingly important for energy exploration and production.
Halliburton has been present in Norway since 1966 when the first
exploration well was spudded and now has more than 1,000 employees
there.
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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