Invention Grant
- Patent Title: Repaired wear and buckle resistant drill pipe and related methods
- Patent Title (中): 修磨耐磨钻管及相关方法
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Application No.: US13413311Application Date: 2012-03-06
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Publication No.: US09085942B2Publication Date: 2015-07-21
- Inventor: Ghazi J. Hashem , David Brunnert , John W. Kochera , Mark Mitchell , Melissa A. Frilot , Thomas M. Redlinger
- Applicant: Ghazi J. Hashem , David Brunnert , John W. Kochera , Mark Mitchell , Melissa A. Frilot , Thomas M. Redlinger
- Applicant Address: US TX Houston
- Assignee: Weatherford Technology Holdings, LLC
- Current Assignee: Weatherford Technology Holdings, LLC
- Current Assignee Address: US TX Houston
- Agency: Patterson & Sheridan LLP
- Main IPC: E21B17/10
- IPC: E21B17/10 ; E21B29/00
Abstract:
The present invention embodies a drill pipe in which various damaged sections of the pipe are repaired in order to maintain or improve the wear and buckle resistance of the drill pipe. The sections are strengthened using various hardening methods such as heat treatment processes and/or expansion techniques. A sleeve can also be applied to the strengthened portions. Surface enhancers, such as hardbanding, can be applied to the strengthened portions or the sleeve in order to provide abrasion resistance or to reduce friction.
Public/Granted literature
- US20130098690A1 REPAIRED WEAR AND BUCKLE RESISTANT DRILL PIPE AND RELATED METHODS Public/Granted day:2013-04-25
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