Invention Grant
- Patent Title: Selectively fired high pressure high temperature back-off tool
- Patent Title (中): 选择性发射高压高温退火工具
-
Application No.: US13276093Application Date: 2011-10-18
-
Publication No.: US08851191B2Publication Date: 2014-10-07
- Inventor: Nauman H. Mhaskar , William B. Harvey
- Applicant: Nauman H. Mhaskar , William B. Harvey
- Applicant Address: US TX Houston
- Assignee: Baker Hughes Incorporated
- Current Assignee: Baker Hughes Incorporated
- Current Assignee Address: US TX Houston
- Agency: Bracewell & Giuliani LLP
- Main IPC: E21B29/02
- IPC: E21B29/02 ; E21B31/16
Abstract:
A method for unseating a threaded connection of wellbore tubing within the wellbore. The method utilizes a back-off tool which consists of a tubular metal housing, a shaped charge and HNS detonating cord within the housing, and an explosive material attached to the housing. The back-off tool is detonated near the threaded connection, creating a shockwave that strikes the threaded connection with sufficient force to unseat the connection.
Public/Granted literature
- US20130092378A1 SELECTIVELY FIRED HIGH PRESSURE HIGH TEMPERATURE BACK-OFF TOOL Public/Granted day:2013-04-18
Information query
