发明名称 |
Downlink pulser for mud pulse telemetry |
摘要 |
A mud pulse telemetry system comprises a surface located fluid supply line having a drilling fluid flowing therein. A non-venting pulser is disposed in the drilling fluid in the supply line, and the non-venting pulser is adapted to generate pressure fluctuations in the flowing drilling fluid. A downhole receiver in hydraulic communication with the non-venting pulser is adapted to detect the pressure fluctuations in the drilling fluid. A method for transmitting pressure signals from a surface location to a downhole location in a wellbore, comprises disposing a non-venting pulser in a surface located fluid supply line having a drilling fluid flowing therein. The non-venting pulser is actuated to generate pressure fluctuations in the flowing drilling fluid according to a predetermined encoding scheme. The pressure fluctuations are detected with a downhole receiver in hydraulic communication with the non-venting pulser.
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申请公布号 |
US2004012500(A1) |
申请公布日期 |
2004.01.22 |
申请号 |
US20030422440 |
申请日期 |
2003.04.24 |
申请人 |
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发明人 |
HAHN DETLEF;PETERS VOLKER;ROUATBI CEDRIC;EGGERS HEIKO |
分类号 |
E21B47/18;G01V11/00;(IPC1-7):G01V3/00 |
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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