Invention Grant
- Patent Title: Flow operated orienter and method of directional drilling using the flow operated orienter
- Patent Title (中): 流量定向器和使用流动定向器定向钻孔的方法
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Application No.: US12355568Application Date: 2009-01-16
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Publication No.: US07946361B2Publication Date: 2011-05-24
- Inventor: Rishi Gurjar , Omar Neumann
- Applicant: Rishi Gurjar , Omar Neumann
- Applicant Address: US TX Houston
- Assignee: Weatherford/Lamb, Inc.
- Current Assignee: Weatherford/Lamb, Inc.
- Current Assignee Address: US TX Houston
- Agency: Patterson & Sheridan, L.L.P.
- Main IPC: E21B7/04
- IPC: E21B7/04 ; E21B4/16 ; F16D11/04 ; F16D13/22 ; F16D25/061 ; F16D43/08

Abstract:
A bottom hole assembly (BHA) for use in drilling a wellbore includes: a first mud motor having a stator and a rotor; a second mud motor having a stator and a rotor; a drill bit rotationally coupled to the second rotor and having a tool face and a longitudinal axis inclined relative to a longitudinal axis of the first mud motor; and a clutch. The clutch is operable to: rotationally couple the second stator to the first stator in a first mode at a first orientation of the tool face, rotationally couple the first rotor to the second stator in a second mode, change the first orientation to a second orientation by a predetermined increment, orient the tool face at the second orientation in an orienting mode, and shift among the modes in response to a change in flow rate of a fluid injected through the clutch and/or a change in weight exerted on the drill bit.
Public/Granted literature
- US20090183921A1 FLOW OPERATED ORIENTER Public/Granted day:2009-07-23
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