发明名称 |
Downlinking Communication System and Method Using Signal Transition Detection |
摘要 |
A downlinking signal is transmitted downhole from the surface using drilling fluid as the communications medium. The downlinking signal includes at least a synchronization phase and a command phase. The downlinking signal is differentiated upon reception such that attributes of the synchronization phase may be used to determine corresponding attributes of the command phase. Commands may be transmitted downhole while drilling and simultaneously while using mud-pulse telemetry uplinking techniques.
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申请公布号 |
US2011286309(A1) |
申请公布日期 |
2011.11.24 |
申请号 |
US201113197864 |
申请日期 |
2011.08.04 |
申请人 |
SUGIURA JUNICHI;SMITH INTERNATIONAL, INC. |
发明人 |
SUGIURA JUNICHI |
分类号 |
E21B47/18 |
主分类号 |
E21B47/18 |
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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