Acoustics – Geophysical or subsurface exploration – Well logging
Patent
1987-10-26
1989-07-04
Tarcza, Thomas H.
Acoustics
Geophysical or subsurface exploration
Well logging
367911, 166212, G01V 140
Patent
active
048441970
ABSTRACT:
Apparatus for positioning a detector at a plurality of depth locations within a borehole includes an elongated body member having a pair of diametrically opposed hydraulic pad displcement members mounted thereon. A pad mounting member is pivotally attached to each pad displacement member and a pair of borehole wall contacting members are pivotally attached to each pad mounting member. A signal detector is mounted behind one or more of the pad members. At each test depth a hydraulic power system deploys the pad displacement members from the body to an extended position and extends the wall engaging pad members into contact with the borehole wall. A redundant hydraulic safety system is provided in case of electrical system failure for releasing the pad member. The safety system includes, in addition to an electrically operated release valve, a clock operated release valve and a tension actuated release valve, all able to release hydraulic pressure on the displacement members in case of the failure of another, allowing withdrawal of the apparatus from the borehole.
REFERENCES:
patent: 3430698 (1969-03-01), Urbanosky
patent: 3565170 (1971-02-01), Urbanosky
patent: 4270569 (1981-06-01), Reay et al.
Kane Barry C.
Lobo Ian J.
McCollum Patrick H.
Tarcza Thomas H.
Western Atlas International Inc.
LandOfFree
Hydraulic release system for use in a borehole apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic release system for use in a borehole apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic release system for use in a borehole apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-845979