Invention Grant
- Patent Title: Method of automatically controlling the trajectory of a drilled well
- Patent Title (中): 自动控制钻井轨迹的方法
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Application No.: US11770954Application Date: 2007-06-29
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Publication No.: US07957946B2Publication Date: 2011-06-07
- Inventor: Dimitrios K. Pirovolou
- Applicant: Dimitrios K. Pirovolou
- Applicant Address: US TX Sugar Land
- Assignee: Schlumberger Technology Corporation
- Current Assignee: Schlumberger Technology Corporation
- Current Assignee Address: US TX Sugar Land
- Agent David J. Smith; Dave R. Hofman
- Main IPC: G06G7/58
- IPC: G06G7/58 ; G01V1/40 ; G01V3/18 ; G01V5/04 ; G01V9/00

Abstract:
Steering behavior model can include build rate and/or turn rate equations to modal bottom-hole assembly behavior. Build and/or turn rate equations can be calibrated by adjusting model parameters thereof to minimize any variance between actual response 118 and estimated response produced for an interval of the well. Estimated position and orientation 104 of a bottom-hole assembly along a subsequent interval can be generated by inputting subsequent tool settings into the calibrated steering behavior model. Estimated position and orientation 104 can be compared to a well plan 106 with a controller 108 which determines a corrective action 110. Corrective action 110 can be converted from a build and/or turn rate to a set of recommended tool settings 114 by using an inverse application 112 of the steering behavior model. As additional data 118 becomes available, steering behavior model can be further calibrated 102 through iteration.
Public/Granted literature
- US20090000823A1 Method of Automatically controlling the Trajectory of a Drilled Well Public/Granted day:2009-01-01
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