Invention Grant
- Patent Title: Passive vertical drilling motor stabilization
- Patent Title (中): 被动垂直钻机马达稳定
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Application No.: US11509885Application Date: 2006-08-25
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Publication No.: US07650952B2Publication Date: 2010-01-26
- Inventor: Nigel Evans , Hugo Roberto Marquez
- Applicant: Nigel Evans , Hugo Roberto Marquez
- Applicant Address: US TX Houston
- Assignee: Smith International, Inc.
- Current Assignee: Smith International, Inc.
- Current Assignee Address: US TX Houston
- Agency: Osha • Liang LLP
- Main IPC: E21B7/04
- IPC: E21B7/04 ; E21B17/10

Abstract:
A drilling stabilization system includes a power section coupled to an upper end of a transmission housing, a bearing housing coupled to a lower end of the transmission housing, and a drill bit coupled to the bearing housing, wherein the transmission housing includes at least two radially outwardly extending blades disposed on the transmission housing. A method of drilling a substantially concentric wellbore includes drilling a formation with a directional drilling bottomhole assembly coupled to a drill string, changing a direction of the drilling of the formation being drilled, removing the directional drilling bottomhole assembly from the drill string, coupling a drilling stabilization system to the drill string, and drilling the formation with the drilling stabilization system.
Public/Granted literature
- US20080047754A1 Passive vertical drilling motor stabilization Public/Granted day:2008-02-28
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