Invention Grant
- Patent Title: Torque sub for use with top drive
- Patent Title (中): 用于顶驱的Torque sub
-
Application No.: US12813981Application Date: 2010-06-11
-
Publication No.: US08047283B2Publication Date: 2011-11-01
- Inventor: Michael Jahn , Bernd-Georg Pietras , Karsten Heidecke
- Applicant: Michael Jahn , Bernd-Georg Pietras , Karsten Heidecke
- 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: E21B19/16
- IPC: E21B19/16

Abstract:
A torque sub for use with a top drive is disclosed. A method of connecting threaded tubular members for use in a wellbore includes operating a top drive. The top drive rotates a first threaded tubular member relative to a second threaded tubular member. The method further includes measuring a torque exerted on the first tubular member by the top drive. The torque is measured using a torque shaft rotationally coupled to the top drive and the first tubular. The torque shaft has a strain gage disposed thereon. The method further includes wirelessly transmitting the measured torque from the torque shaft to a stationary interface; measuring rotation of the first tubular member; compensating the rotation measurement by subtracting a deflection of the top drive and/or the first tubular member; determining acceptability of the threaded connection; and stopping rotation of the first threaded member when the threaded connection is complete or if the threaded connection is unacceptable.
Public/Granted literature
- US20100243273A1 TORQUE SUB FOR USE WITH TOP DRIVE Public/Granted day:2010-09-30
Information query