发明名称 |
Fail safe downhole signal repeater |
摘要 |
<p>A system and method of fail safe communication of information between surface equipment and downhole equipment. The system comprises two or more repeaters (34, 35, 36) disposed within a wellbore (38) such that two repeaters (34, 35) will receive each signal carrying information that is telemetered. The repeater (35) that is farther from the source (44) includes a memory device that stores the information carried in the signal. A timer device also in the repeater (35) that is farther from the source (44) will trigger the retransmission of the information after a predetermined time period unless the repeater (35) that is farther from the source (44) has detected a signal carrying the information generated by the repeater (34) that is closer to the source (44). <IMAGE></p> |
申请公布号 |
EP0921269(A1) |
申请公布日期 |
1999.06.09 |
申请号 |
EP19980309860 |
申请日期 |
1998.12.02 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
SMITH, HARRISON C. |
分类号 |
E21B47/00;E21B47/12;E21B47/14;(IPC1-7):E21B47/12 |
主分类号 |
E21B47/00 |
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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