Schlumberger outlines benefits of new slimhole services

Schlumberger introduced two new developments at last week’s SPE/IADC drilling conference and exhibition.

Offshore staff

AMSTERDAM, the Netherlands – Schlumberger introduced two new developments at last week’s SPE/IADC drilling conference and exhibition.

The DigiScope slimholemeasurement-while-drilling (MWD) service is designed to transmit data to surface for real-time reservoir description and geosteering in extended-reach and deepwater wells.

Steve Kaufmann, president, Drilling & Measurements, Schlumberger, said the new service provides real-time drilling optimization and formation evaluation data at high physical bit rates of up to 36 bps, minimizing rate of penetration restrictions in the deepest offshore wells.

“The powerful tool telemetry is six times faster than traditional MWD services as proven with more than 200,000 ft [60,960 m] drilled in the most challenging formations across four continents in the last three years.”

The new high-speed telemetry service powers Schlumberger’s full suite of logging-while-drilling services in the same bottomhole assembly.

One client in Mexico sought to obtain real-time data from a high-angle development well in a depleted reservoir requiring low mud weight to minimize losses. DigiScope’s telemetry bandwidth range was applied in this instance to MWD for the first time. Schlumberger said it allowed the operator to acquire high-quality the data with a high signal-to-noise ratio, and safely guide drilling to total depth.

Schlumberger’s new slimhole PowerDrive Archer high build rate rotary steerable system (RSS) offers build rates of up to 18°/100 ft (30 m), with full directional control and dogleg assurance for complex 3D well profiles and multilateral well designs.

It “can drill well profiles previously only possible with motors, in one run, with the ROP and wellbore quality of a fully rotating RSS,” claimed Kaufmann.

The new system has been proven in more than 130 field test runs in North America, the Middle East, West Africa, Europe, and Asia, said Schlumberger.

3/14/2013

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