Halliburton Sperry-Sun commercialise GeoTap
Posted: 7 October 2003
Real-time wireline-quality formation pressure measurements
available for drilling and formation evaluation applications
Halliburton Energy Services' Sperry-Sun product service line announced
the global commercialisation of its GeoTap LWD (logging-while-drilling)
formation pressure tester.
The LWD sensor provides operators with wireline-quality, reservoir
pore pressure data for drilling and formation evaluation applications
to help operators maximise reservoir deliverability.
Halliburton Energy Services is a business unit of Halliburton.
The GeoTap formation pressure tester underwent extensive field
and pre-commercial testing with 10 operators world-wide and performed
successfully in a variety of lithologies at depths greater than
29,000 feet and with deviations up to 104 degrees inclination. Following
the success of these pre-commercial trials, the GeoTap formation
pressure tester is now available commercially.
"Experience and knowledge gained in the past 18 months have
allowed Sperry-Sun to provide a step change in formation testing,"
said Phil Longorio, vice president, Halliburton, Sperry-Sun. "The
ability to accurately and precisely measure formation pore pressure
during the drilling process helps improve drilling safety and efficiency."
The GeoTap LWD formation tester obtains direct pore pressure measurements
in seven to ten minutes using a wireline-type probe and pad and
precision quartz pressure sensor.
The device allows multiple tests to be performed in a single drilling
run with reported accuracy to within one percent of comparable wireline
technology. The LWD tester is surface controllable by the Geo-Span
real-time/two-way communication downlink system, allowing operators
to make on-the-fly decisions regarding the testing program while
at the same time communicating reservoir data up hole.
Recently, the Geo-Span service successfully operated both the GeoTap
LWD formation tester and the Geo-Pilot rotary steerable system in
the Gulf of Mexico.
Interpretative software originally designed for Halliburton's wireline
formation pressure tester enables the GeoTap tester to identify
formation fluid types by means of pressure gradient profiling, determining
the gas/oil/water contacts within the reservoir in real time and
accelerating the completion planning process.
By measuring formation pressure response, the sensor can also estimate
permeability and fluid mobility.
"Combining the technology synergies, resources, and expertise
within Halliburton and Sperry-Sun enables our customers to obtain
critical reservoir data during the drilling process, saving significant
time and risks compared to traditional wireline methods," said
Tim Probert, senior vice president, Halliburton's Drilling and Formation
Evaluation division.
The GeoTap tester provides accurate formation pressure that can
be used to dynamically alter the well construction process. Because
the measurements are made near the bit prior to extensive drilling
fluid invasion or hole deterioration, the GeoTap formation pressure
tester allows drilling engineers, reservoir engineers, and petrophysicists
to view critical reservoir information at near-pristine conditions.
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 over 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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