Invention Application
- Patent Title: REAL TIME SURVEYING WHILE DRILLING IN A ROLL-STABILIZED HOUSING
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Application No.: US17628583Application Date: 2020-07-22
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Publication No.: US20220251938A1Publication Date: 2022-08-11
- Inventor: Andrew Whitmore , Abdiwahid Alasow , Edward Richards , Darren Lee Aklestad
- Applicant: Schlumberger Technology Corporation
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- International Application: PCT/US2020/042998 WO 20200722
- Main IPC: E21B44/00
- IPC: E21B44/00 ; E21B47/0228

Abstract:
A method for drilling a subterranean wellbore includes rotating a drill string in the wellbore to drill. The drill string includes a roll-stabilized housing deployed in a drill collar and survey sensors deployed in the roll-stabilized housing. Sensor measurements are acquired while the drill string is rotating. High bandwidth accelerometer measurements may be obtained by combining triaxial accelerometer measurements and gyroscopic sensor measurements. Survey parameters, including a wellbore azimuth, may be computed from the high bandwidth accelerometer measurements. Triaxial magnetometer measurements may be processed to compute an eddy current induced wellbore azimuth error which may be removed from a previously computed wellbore azimuth to obtain a corrected wellbore azimuth.
Public/Granted literature
- US11898432B2 Real time surveying while drilling in a roll-stabilized housing Public/Granted day:2024-02-13
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