Retrievable wedging system for coupling downhole devices into ca

Details Retrievable wedging system for coupling downhole devices into ca Retrievable wedging system for coupling downhole devices into ca

1987-09-14

1989-06-20

Kisliuk, Bruce M.

Wells

Processes

Placing or shifting well part

166134, 166217, 166385, 294 8625, 294 96, E21B 2300, E21B 33129, B25B 100

Patent

active

048402303

ABSTRACT:
A retrievable downhole wedging system is disclosed for firmly securing accelerometers and other instruments to the bottom of a cased bore hole. The system includes a pair of arcuate top wedges and a pair of arcuate bottom wedges for insertion between the accelerometers and the casing. The bottom wedges are slideably coupled to the accelerometer such that they will not become separated from the accelerometer during retrieval. A retrieving means is provided for disengaging the accelerometer by first individually removing the top wedges and then pulling the accelerometer free of the bottom wedges.

REFERENCES:
patent: 903314 (1908-02-01), Porter
patent: 1875357 (1932-09-01), Simmons
patent: 2122742 (1938-07-01), Hanes
patent: 2623593 (1952-12-01), Pennington et al.
patent: 2672200 (1954-03-01), Patterson
patent: 2729293 (1956-01-01), Cloud
patent: 2756827 (1956-07-01), Farrar
patent: 3371741 (1968-03-01), Haxby
patent: 3493046 (1970-02-01), Johnson et al.
patent: 4313497 (1982-02-01), Graham

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