Downhole sequentially-firing casing perforating gun with electronically-actuated wireline release mechanism, and actuation circuit therefor

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8264814
APP PUB NO 20110067854A1
SERIAL NO

12565503

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A downhole release tool for use in conjunction with multiple select-fire perforating guns and a method for electronically actuating the release tool using either positive or negative control voltage. In a preferred embodiment, the release tool employs operating circuitry that allows actuation of the release tool by either a positive or a negative voltage at an absolute magnitude greater than the absolute magnitude of positive or negative voltages used to arm or fire the perforating guns.

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Patent Owner(s)

Patent OwnerAddress
NEXTIER COMPLETION SOLUTIONS INC3990 ROGERDALE RD HOUSTON TX 77042

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Buffington, Brian S Weatherford, US 3 55
Dobrinski, Michael W Weatherford, US 2 53
Harris, John R Weatherford, US 36 228
Lezu,, Jr Frank L Weatherford, US 3 55
Love, Lyle G Weatherford, US 6 96
Stark, Sanford E Weatherford, US 3 55

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