发明名称 |
Method of operating a pressure cycle operated perforating firing head and generating electricity in a subterranean well |
摘要 |
Pressure cycle operated apparatus and methods. A method of actuating a firing head includes the steps of: reciprocably displacing an actuator piston of the firing head, the displacing step including the piston being alternately pressure balanced and unbalanced; and igniting a combustible material in response to the piston displacing step. A method of generating electricity includes: reciprocably displacing a piston, the displacing step including the piston being alternately pressure balanced and unbalanced; and generating electricity in response to the piston displacing step. A firing head includes an actuator piston separating at least two chambers; a check valve which permits one-way flow between the chambers; a flow restrictor which restricts flow between the chambers; a biasing device which biases the piston toward one of the chambers; and a firing pin releasing device which releases a firing pin in response to displacement of the piston. |
申请公布号 |
US8061431(B2) |
申请公布日期 |
2011.11.22 |
申请号 |
US20100978811 |
申请日期 |
2010.12.27 |
申请人 |
MOORE RANDALL S.;HALES JOHN H.;HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
MOORE RANDALL S.;HALES JOHN H. |
分类号 |
E21B29/02;E21B43/11 |
主分类号 |
E21B29/02 |
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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