Apparatus for locating a member in a borehole

Details Apparatus for locating a member in a borehole Apparatus for locating a member in a borehole

1989-07-07

1990-04-03

Kyle, Deborah L.

Communications: electrical

Wellbore telemetering or control

Selective control of subsurface equipment

166250, 166383, 166153, 367 25, 367911, G01V 100

Patent

active

049144324

ABSTRACT:
Geophone detectors are spaced along a long borehole in a mineral seam by pumping grout from a grout tank into a breech assembly and selectively passing the detectors from the breech assembly through gate valves and into a drill string inserted in a borehole. The detectors are connected by a trailing signal cable and an anchor module secures the cable at the far end of the borehole. The detectors can be orientated in the borehole before the grout sets them in position.

REFERENCES:
patent: 4418756 (1983-12-01), Yonker et al.
patent: 4560934 (1985-12-01), Dickinson
patent: 4570709 (1986-02-01), Wittrisch
patent: 4690214 (1987-09-01), Wittrisch
patent: 4697638 (1987-10-01), Knight
patent: 4729429 (1988-03-01), Wittrisch

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