发明名称 WELL TOOL WITH A PAWL
摘要 <p>WELL TOOL WITH A PAWL Disclosed is a well tool having a pawl for engaging a surface in a well. Once the pawl engages the well surface and has performed its intended function, it is rendered inoperative. The well tool is retrieved from the well and the pawl redressed. This abstract is neither intended to define the invention of the application, which, of course, is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way.</p>
申请公布号 CA1081612(A) 申请公布日期 1980.07.15
申请号 CA19780300206 申请日期 1978.03.31
申请人 OTIS ENGINEERING CORPORATION 发明人 YONKER, JOHN H.
分类号 E21B23/03;(IPC1-7):21B7/06 主分类号 E21B23/03
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