Weight and pressure operated well testing apparatus and its...

Details Weight and pressure operated well testing apparatus and its... Weight and pressure operated well testing apparatus and its...

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

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