Control system for subsurface safety valve

申请公布号：GB2285646(A)

申请号：GB19940024829

申请日期：1994.12.08

申请公布日期：1995.07.19

申请人：

* BAKER HUGHES INCORPORATED

发明人：SCOTT CLAYTON * STRATTAN

分类号：E21B33/035;E21B34/10;(IPC1-7):E21B34/10

主分类号：E21B33/035

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