Schlumberger Technology Corporation

Westerngeco L.l.p.

Westerngeco Seismic Holdings Limited

Jason Gardner

Ali Ozbek

Raphael Gadot

Randall LeBlanc

Susanne Rentsch-Smith

Wouter Gerrit Brouwer

The present disclosure relates to a power isolation adapter which can enable the use of multiple power sources in a bottom hole assembly (BHA) by isolating the power sources on a tool bus while maintaining a communication bus across the BHA. Such power sources may be part of a measurement-while-drilling (MWD) module, such as a mud turbine generator, providing power as a DC signal. The power isolation adapter isolates the power sources by blocking DC signals, but maintains an AC communication bus across the BHA. The ability to use multiple power sources in a BHA thus allows for more complex BHA configurations that normally could not be powered using a single power source.

Isolation adapter for using multiple power sources in a bottom hole assembly

A technique includes receiving sensor data; sorting the data into a gather representation that corresponds to a plurality of shots of an energy source; and determining a signal cone based at least in part on at least one characteristic of the gather representation. The technique includes processing the sensor data in a processor-based machine to attenuate noise to generate data representing a signal based at least in part on the determined signal cone and the gather representation.

Attenuating noise acquired in an energy measurement

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Houston, TX, United States of America

Jason Gardner