E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/4
E21B 33/03 (2006.01)
Patent
CA 1061244
ABSTRACT OF THE DISCLOSURE An apparatus, for use in conjunction with a testing string having a central flow passage therethrough and located in a fluid filled bore of an oil well extending from the earth's surface to an underground formation, comprising: a packer, at the lower end of the testing string; a weight responsive valve means, located in the testing string; a delay means, within the weight responsive valve means; a weight and pressure responsive valve means; a cylindrical mandrel in the weight and pressure responsive valve means; a length of intermediate con- duit means, in the drill string; and a slip joint means in the drill string.
309036
Barrington Burchus Q.
Farley David L.
Hortman Norman G.
Nix George J.
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