| 发明名称 |
OIL WELL SERVICE TOOL |
| 摘要 |
<p>A tool for use with perforation sealer balls utilizes a hollow outer mandrel, a perforated liner, and an elastomeric ball guide and casing seal to channel perforation balls from the casing into a hollow retention mandrel in the lower packer.</p> |
| 申请公布号 |
CA1016066(A) |
申请公布日期 |
1977.08.23 |
| 申请号 |
CA19750227038 |
申请日期 |
1975.05.15 |
| 申请人 |
DRESSER INDUSTRIES, INC. |
发明人 |
WRIGHT, CHARLES L.;WILLIAMS, BILLY C. |
| 分类号 |
E21B33/124;E21B41/00;E21B43/26 |
主分类号 |
E21B33/124 |
| 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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