Drill stem testing with tubing conveyed perforation

Details Drill stem testing with tubing conveyed perforation Drill stem testing with tubing conveyed perforation

1992-01-23

1994-03-29

Dang, Hoang C.

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

166 551, 166128, 166152, 166324, 166326, 166332, E21B 43116, E21B 3412, E21B 33128, E21B 4908

Patent

active

052976297

ABSTRACT:
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.

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Exhibit A--Halliburton Services Sales & Service Catalog No. 43 (1985), p. 2549; Exhibit B, p. 2544; Exhibit C, pp. 2564-2565.
Exhibit D--Vann Systems brochure TCP-1006.
Exhibit E-Vann Systems brochure TCP-1002.
Exhibit F-Vann Systems brochure TCP-1013.
Exhibit G--Vann Systems brochure TCP-1020.

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