发明名称 |
Side pocket mandrel having forged indentations |
摘要 |
A side pocket mandrel for use in well tubing. The mandrel has a body, having an open bore extending through the body in alignment with the well tubing, and a side pocket offset from the bore. A valve receptacle is formed in the side pocket of the mandrel. The body of the mandrel has a plurality of forged indentations. These indentations are axially spaced above the valve receptacle and extend into the side pocket for a distance sufficient to keep well tools from entering the valve receptacle. The indentations may also taper away from the valve receptacle.
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申请公布号 |
US4759410(A) |
申请公布日期 |
1988.07.26 |
申请号 |
US19860904523 |
申请日期 |
1986.09.05 |
申请人 |
HUGHES TOOL COMPANY |
发明人 |
BENKER, WILHELM E.;HOLT, JR., JAMES H.;THREADGILL, MAX A. |
分类号 |
E21B23/03;(IPC1-7):E21B23/03 |
主分类号 |
E21B23/03 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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