Schlumberger
advanced scientific approach to well cleanout
Posted: 23 March 2004
PowerCLEAN System Ensures Cleanout At High Temperatures
and Any Deviation Angle
Schlumberger Oilfield Services introduces a scientifically advanced
approach to well cleanout with the launch of its multicomponent
PowerCLEAN system at the SPE/ICoTA Coiled Tubing Conference and
Exhibition March 22 24, Houston.
Designed for wellbore fill removal using coiled tubing, the PowerCLEAN
system is an integrated solution that includes job design software,
a proprietary nozzle design for greatly improved cleaning ability,
specialized fluids, and a real-time solids monitoring system to
detect solids as they are removed to the surface.
This new service has been developed through extensive research
and rigorous testing to enable optimum cleanout of sand, bauxite
and similar particles under virtually any wellbore condition, including
large casing, high-temperature and any deviation angle. "Clean
wells make better producers! The integrated PowerCLEAN system has
all the elements needed to address even the most complex well geometries.
PowerCLEAN brings another powerful tool to our arsenal of techniques
for helping our customers get the maximum production from their
well stock." said Mark Corrigan, Well Services President, Schlumberger.
Conventional cleanout nozzles have a forward or forward-backward
jetting action which can leave debris in the wellbore. This new
system uses a swirling effect to create a fluid vortex which carries
removed particles up the wellbore. A new low friction fluid, with
unique capabilities at higher temperatures, allows the system to
achieve higher flow rates without increasing pumping pressure and
so improve operational efficiency and safety. The job procedure
can be optimized through significant enhancements to the job design
software and the addition of a nonintrusive system for real-time
solids monitoring
In a Gulf of Mexico well with a maximum deviation of 68 degrees,
the system was used to clean excess gravel pack (bauxite) from the
top of a gravel-pack assembly. The cleanout was highly successful,
with approximately 12,000 lbm of bauxite removed from the well in
12 hours. When the coiled tubing was run in again, it tagged the
rope socket on the gravel pack assembly, confirming that the well
was totally cleaned. After the procedure, well production increased
to 2.5 Mscf/d from 0.5 Mscf/d.
About Schlumberger
Schlumberger is the world's leading oilfield services company supplying
technology, project management and information solutions that optimize
performance for customers working in the oil and gas industry. The
company employs more than 50,000 people of over 140 nationalities
working in 100 countries, and comprises two primary business segments.
Schlumberger Oilfield Services supplies a wide range of products
and services from formation evaluation through directional drilling,
well cementing and stimulation, well completions and productivity
to consulting, software, information management and IT infrastructure
services that support core industry operational processes.
WesternGeco, jointly owned with BakerHughes, is the world's largest
seismic company and provides advanced acquisition and data processing
services. In 2003, Schlumberger operating revenue was $11.5 billion.
For more information see visit www.slb.com
Posted by Richard Price,
Editor Pipeline Magazine
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