发明名称 |
DEVICE FOR GENERATING ACOUSTIC IMPULSES BY IMPLOSION IN A BOREHOLE |
摘要 |
A device for generating acoustic pulses by driving suddenly into a body lowered in a well a piston having a face in contact with the liquid contained in the well and adapted for sliding inside said body. The device comprises a valve securely fixed to the piston, a second piston and a hydraulic system disposed completely in the body and comprising principally a pump, electro-valves, an equalizing cylinder, a low pressure reservoir and supply circuits, for moving the valve and the piston to a set position and for immobilizing it intermittently. |
申请公布号 |
DE3470960(D1) |
申请公布日期 |
1988.06.09 |
申请号 |
DE19843470960 |
申请日期 |
1984.11.16 |
申请人 |
INSTITUT FRANCAIS DU PETROLE |
发明人 |
DEDOLE, PASCAL;LAURENT, JEAN |
分类号 |
G01V1/135;(IPC1-7):G01V1/135 |
主分类号 |
G01V1/135 |
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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