Invention Grant
- Patent Title: Cementing whipstock apparatus and methods
- Patent Title (中): 水泥造斜机装置及方法
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Application No.: US13085586Application Date: 2011-04-13
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Publication No.: US08820437B2Publication Date: 2014-09-02
- Inventor: David L. Ervin , Charles H. Dewey , John E. Campbell , Shantanu N. Swadi , Philip M. Gregurek
- Applicant: David L. Ervin , Charles H. Dewey , John E. Campbell , Shantanu N. Swadi , Philip M. Gregurek
- Applicant Address: US TX Houston
- Assignee: Smith International, Inc.
- Current Assignee: Smith International, Inc.
- Current Assignee Address: US TX Houston
- Main IPC: E21B7/06
- IPC: E21B7/06 ; E21B7/08 ; E21B33/14

Abstract:
A technique facilitates sidetracking by eliminating one or more trips downhole. The technique comprises delivering a sidetracking system downhole into a wellbore, and utilizing a component of the sidetracking system to grip a wall of the wellbore. The sidetracking system may comprise a whipstock assembly and a running/stinger assembly in which the stinger assembly is designed for disconnection from the whipstock assembly after delivery downhole. After disconnecting the stinger assembly, the sidetracking system enables delivery of cement slurry down through the stinger assembly to form a cement plug at a desired location.
Public/Granted literature
- US20110253387A1 CEMENTING WHIPSTOCK APPARATUS AND METHODS Public/Granted day:2011-10-20
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