Well test apparatus and methods

Details Well test apparatus and methods Well test apparatus and methods

1984-04-27

1986-04-22

Leppink, James A.

Wells

Processes

With indicating, testing, measuring or locating

166116, 166142, 166240, 166242, 166332, 166385, 166386, E21B 3414, E21B 4312, E21B 4706

Patent

active

045835926

ABSTRACT:
A well test tool for closing a well at a downhole location below the well packer and near the formation to be tested, the apparatus being openable and closable from the surface by tensioning and relaxing the cable or wire line on which it is lowered into the well, the test tool having a lock mechanism which locks automatically upon entering its landing receptacle in the well and is further provided with a releasing mechanism for unlocking the test tool automatically after a present number of open/close cycles have been performed. A bypass landing receptacle is provided which permits high rates of flow during testing. A modified bypass landing receptacle is provided to permit use of the apparatus above the well packer, as in wells having an existing packer therein. Methods of testing wells are also disclosed.

REFERENCES:
patent: Re31313 (1983-07-01), Fredd et al.
patent: 3472070 (1969-10-01), Chenoweth
patent: 3552718 (1971-01-01), Schwegman
patent: 4051897 (1977-10-01), Kingelin
patent: 4083401 (1978-04-01), Rankin
patent: 4134452 (1979-01-01), Kingelin
patent: 4149593 (1979-04-01), Gazda et al.
patent: 4159643 (1979-07-01), Watkins
patent: 4252195 (1981-02-01), Fredd
patent: 4373583 (1983-02-01), Waters
patent: 4420044 (1983-12-01), Pullin et al.
patent: 4508174 (1985-04-01), Skinner et al.
The brochure entitled "MUST" published by Flopetrol Johnston.
World Oil magazine, p. 21, Oct. 1983 Edition.
Composite Catalog of Oil Field Equipment and Services, pp. 506, 507, 1970-1971 Edition, published by World Oil magazine.

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