Invention Grant
- Patent Title: Systems and methods of forming subsurface wellbores
- Patent Title (中): 形成地下井筒的系统和方法
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Application No.: US12576751Application Date: 2009-10-09
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Publication No.: US09129728B2Publication Date: 2015-09-08
- Inventor: David Alston Edbury , Duncan Charles MacDonald
- Applicant: David Alston Edbury , Duncan Charles MacDonald
- Applicant Address: US TX Houston
- Assignee: Shell Oil Company
- Current Assignee: Shell Oil Company
- Current Assignee Address: US TX Houston
- Main IPC: E21B44/00
- IPC: E21B44/00 ; H01C3/00 ; E21B44/02 ; E21B43/24 ; H05B3/48
Abstract:
A system for forming a subsurface wellbore includes a rack and pinion system including a chuck drive system. The chuck drive system operates a drilling string. An automatic position control system includes at least one measurement sensor coupled to the rack and pinion system. The automatic position control system controls the rack and pinion system to determine a position of the drilling string.
Public/Granted literature
- US20100108379A1 SYSTEMS AND METHODS OF FORMING SUBSURFACE WELLBORES Public/Granted day:2010-05-06
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