发明名称 |
Gravel pack assembly |
摘要 |
A well apparatus connected to a pipe string extending down into a cased borehole for treating a formation comprising a packer assembly for sealing with the casing assembly and an integral crossover/release assembly attached to the packer assembly, and closing a channel between the tubing bore and the lower extremity of the gravel screen before or after treating the formation. Before releasing the screen, a channel exists between the tubing bore and a projecting wash pipe extending below the gravel screen. Releasing the screen closes the lower screen penetrating channel.
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申请公布号 |
US4733723(A) |
申请公布日期 |
1988.03.29 |
申请号 |
US19870071983 |
申请日期 |
1987.07.10 |
申请人 |
CALLEGARI, SR., STEPHEN R. |
发明人 |
CALLEGARI, SR., STEPHEN R. |
分类号 |
E21B34/12;E21B34/14;E21B43/04;(IPC1-7):E21B43/04;E21B34/06 |
主分类号 |
E21B34/12 |
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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