Invention Grant
- Patent Title: Apparatus and methods for tubular makeup interlock
- Patent Title (中): 用于管状化妆互锁的装置和方法
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Application No.: US11872307Application Date: 2007-10-15
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Publication No.: US07896084B2Publication Date: 2011-03-01
- Inventor: David M. Haugen
- Applicant: David M. Haugen
- Applicant Address: US TX Houston
- Assignee: Weatherford/Lamb, Inc.
- Current Assignee: Weatherford/Lamb, Inc.
- Current Assignee Address: US TX Houston
- Agency: Patterson & Sheridan, LLP
- Main IPC: E21B19/16
- IPC: E21B19/16
Abstract:
Apparatus and methods are provided to prevent an operator from inadvertently dropping a string into a wellbore during assembling and disassembling of tubulars. Additionally, the apparatus and methods may be used to for running in casing, running in wellbore components or for a drill string.
Public/Granted literature
- US20080083540A1 APPARATUS AND METHODS FOR TUBULAR MAKEUP INTERLOCK Public/Granted day:2008-04-10
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