Wells – Processes – With indicating – testing – measuring or locating
Patent
1988-11-03
1989-11-21
Kisliuk, Bruce M.
Wells
Processes
With indicating, testing, measuring or locating
166 80, 166336, 166337, 73 405R, 73 46, 73 491, 73151, E21B 4100, E21B 4700, G01M 308
Patent
active
048815985
ABSTRACT:
Apparatus and methods are provided for testing a blow-out preventor system of a well, which blow-out preventor system is designed to close upon both a smaller drill pipe string and a larger drill pipe string. The apparatus includes a first elongated cylindrical testing mandrel having an outside diameter substantially equal to an outside diameter of the smaller drill pipe string, and a second elongated cylindrical testing mandrel having an outside diameter substantially equal to an outside diameter of the larger drill pipe string. The first testing mandrel is telescopingly received within the second testing mandrel. A releasable locking structure is provided for releasably locking the testing mandrels in a telescopingly extended position whereby the blow-out preventor system can be tested against the first testing mandrel, and for releasing the tested mandrels from their telescopingly extended position so that they move to a telescopingly collapsed position whereby the blow-out preventor system can also be tested against the second testing mandrel without tripping the testing apparatus out of the well in which the blow-out preventor system is installed.
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Bass Lee S.
Stockinger Michael P.
Tietema James R.
Conoco Inc.
Kisliuk Bruce M.
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