E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 47/00 (2006.01) E21B 33/128 (2006.01) E21B 33/129 (2006.01) E21B 34/00 (2006.01) E21B 34/12 (2006.01) E21B 43/00 (2006.01) E21B 43/1185 (2006.01) E21B 49/08 (2006.01)
Patent
CA 2087866
A well test string includes an annulus pressure responsive tester valve and a tubing conveyed perforating gun including a tubing pressure actuated time delay firing mechanism. A compression set packer is disposed in the test string between the tester valve and the perforating gun. The packer includes a bypass valve for communicating the well below the packer with the tubing bore. The bypass valve is operably associated with the packer so that the bypass valve is open prior to setting the packer and so that the bypass valve is closed as the packer is set. The compression set packer also includes a one-way equalizer valve for allowing one-way fluid flow from the well below the packer to the tubing bore. The equalizer valve is operably associated with a bypass valve so that the equalizer valve is inoperable when the bypass valve is open, and so that the equalizer valve is operable when the bypass valve is closed.
Barrington Burchus Q.
George Flint R.
Barrington Burchus Q.
George Flint R.
Haliburton Company
Swabey Ogilvy Renault
LandOfFree
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