Communications – electrical: acoustic wave systems and devices – Seismic prospecting – Well logging
Patent
1997-01-24
2000-07-11
Oda, Christine K.
Communications, electrical: acoustic wave systems and devices
Seismic prospecting
Well logging
175 45, G01V 140
Patent
active
060882948
ABSTRACT:
The present invention provides a system for drilling boreholes having a downhole subassembly which contains an acoustic measurement-while-drilling system. The acoustic system contains an acoustic transmitter and receiver for determining the acoustic velocity through the formations surrounding the borehole ad an acoustic transmitter and a set of receivers for determining the bed boundaries surrounding the borehole formation utilizing the acoustic velocities measured by the system. The downhole subassembly also contains a computing system which performs computations downhole and transmits certain answers uphole during the drilling operations. The bed boundary information is utilized to drill the wellbore along a desired wellbore path. The downhole computing system correlates the acoustic sensor measurements with other measurement-while-drilling measurements and transmits selected correlated information uphole. The downhole computing system contains predetermined well profile which is updated based on the bed boundary information. The system may be adapted to correct or update seismic data and offset well data based on acoustic sensor system measurements.
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Balogh William Thomas
Brooks Andrew G.
Dubinsky Vladimir
Harrell John W.
Herbert Roger P.
Baker Hughes Incorporated
Oda Christine K.
Taylor Victor J.
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