Actuating device associated with a drill string and comprising a hydrostatic drilling fluid circuit, actuation method and application thereof
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United States of America Patent
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-
May 10, 1994
Grant Date -
N/A
app pub date -
Jul 16, 1992
filing date -
Jul 16, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention is a device for the remote actuation of equipment (3) associated with a drill string (1) through a hydraulic displacement mechanism (10;53,58) co-operating with a distributor (7;25,26,27;47) associated with the drilling fluid. The displacement mechanism directly converts the hydraulic energy of the drilling fluid into actuating mechanical energy with the co-operation of no other fluid than the drilling fluid. The invention further relates to an actuating method using the device and has an application of directional drilling in the petroleum field.
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- Non-US Classification not provided for expired patents
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