发明名称 |
A DEVICE FOR GENERATING ACOUSTIC PULSES BY IMPLOSION, INSIDE A WELL |
摘要 |
<p>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.</p> |
申请公布号 |
IN163149(B) |
申请公布日期 |
1988.08.13 |
申请号 |
IN1984MA89319 |
申请日期 |
1984.11.20 |
申请人 |
INSTITUT FRANCAIS DU PETROLE |
发明人 |
DEDOLE PASCAL;LAURENT JEAN |
分类号 |
G01V1/135;(IPC1-7):E21B7/00 |
主分类号 |
G01V1/135 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|