Invention Application
US20100051256A1 Downhole Tool String Component that is Protected from Drilling Stresses
有权
井下工具字符串组件，受到钻井应力的保护
- Patent Title: Downhole Tool String Component that is Protected from Drilling Stresses
- Patent Title (中): 井下工具字符串组件，受到钻井应力的保护
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Application No.: US12616200Application Date: 2009-11-11
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Publication No.: US20100051256A1Publication Date: 2010-03-04
- Inventor: David R. Hall , Nathan Nelson , Scott Woolston , Scott Dahlgren , Jonathan Marshall
- Applicant: David R. Hall , Nathan Nelson , Scott Woolston , Scott Dahlgren , Jonathan Marshall
- Main IPC: E21B23/00
- IPC: E21B23/00
Abstract:
In one aspect of the present invention, a downhole tool string component has a first and second threaded end on a mandrel, the first threaded end attached to a first sleeve and the second threaded end attached to a second sleeve. An intermediate sleeve assembly is disposed circumferentially around the mandrel and intermediate the first and second threaded ends, and the intermediate sleeve assembly is primarily isolated from stress of the first or second sleeve.
Public/Granted literature
- US08201645B2 Downhole tool string component that is protected from drilling stresses Public/Granted day:2012-06-19
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