Schlumberger seismicVISION cuts cost and improves safety
Posted: 11 November 2003
New Schlumberger seismic-while-drilling measurement reduces
uncertainty ahead of the bit
Schlumberger Oilfield Services announced a new logging-while-drilling
(LWD) system that acquires and transmits seismic data in real time
without interfering with normal drilling operations.
The seismicVISION system delivers traditional borehole-seismic
measurements, including checkshot and interval velocity data in
real time, to reduce the uncertainty of events ahead of the bit.
Seismic waveforms are available in memory. In-time access to such
calibration data is critical where large uncertainties in the time-depth
relationship exist, or in wells where it is essential to set casing
in a particular interval identified by the surface seismic data.
With seismicVISION operators can reduce casing runs and rig time.
“With seismicVISION drillers can manage seismic uncertainty
to reduce well costs and improve safety; especially in deepwater
and other areas with significant seismic uncertainties,” said
Paal Kibsgaard, president, Drilling and Measurements, Schlumberger
Oilfield Services. “Importantly, with the checkshot continuously
correcting the seismic map both the driller in depth, as well as
the geologists and geophysicists in time, can see in real time where
they are on the surface seismic map.”
seismicVISION has been successfully tested in a variety of offshore
locations.
A client drilling in the Caspian Sea used the service to reduce
seismic uncertainty from 2500 feet to 30 feet to confirm and hit
the target location.
Another client, drilling in the Gulf of Mexico, used the seismicVISION
service to drill within 60 feet of the base of salt and then used
the waveforms to look ahead and identify features below the salt.
For more information see http://www.slb.com/oilfield/seismicvision.
About Schlumberger
Schlumberger is a global oilfield and information services company
with major activity in the energy industry.
The company employs 78,000 people of more than 140 nationalities
working in 100 countries and comprises three primary business segments.
Schlumberger Oilfield Services is the world's premier oilfield services
company supplying a wide range of technology services and solutions
to the international oil and gas industry.
WesternGeco, jointly owned with Baker Hughes, is the world's largest
and most advanced surface seismic company. SchlumbergerSema is a
leading supplier of IT consulting, systems integration, and network
and infrastructure services to the energy industry, as well as to
the public sector, telecommunications and finance markets. In 2002,
Schlumberger operating revenue was $13.2 billion.
For more information see http://www.slb.com.
Posted by Richard Price,
Editor Pipeline Magazine
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