Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Patent
1981-06-24
1983-03-08
Pate, III, William F.
Wells
Processes
Perforating, weakening, bending or separating pipe at an...
175 451, 175 452, 166 551, E21B 43116
Patent
active
043758347
ABSTRACT:
Method and apparatus for perforating a well casing (14) with a large pressure differential toward the well casing (14) from the surrounding oil and gas-bearing strata using a casing gun attached on a wireline below the tubing is disclosed. A perforator (12) is attached to a casing gun adapter (10), the casing gun adapter (10) is releasably attached to production tubing (16) and inserted into the well casing (14). After the production tubing (16) is installed, a collar locator (26) and a firing mechanism (44) are run on a wireline and attached to the casing gun adapter (10). The casing gun adapter (10) and the perforator (12) are released from the tubing and lowered to a predetermined stratum using a collar locator where the perforator (12) is detonated. After detonation, the perforator (12) and casing gun adapter (10) are raised and secured in the production tubing (16). The collar locator (26) and the firing mechanism (44) are detached from the casing gun adapter (10). A hold-down means (510, 610 or 710) is attached to the perforator (12) or to the casing gun adapter (10). The hold-down means (510, 610 or 710) holds the perforator (12) in the well casing (14) during perforation and prevents movement of the perforator (12) after perforation. In an alternate embodiment, the hold-down (610) wedges the perforator (12) in the well casing during and after perforation.
REFERENCES:
patent: 1875583 (1932-09-01), Fox
patent: 2169559 (1939-08-01), Halliburton
patent: 2436036 (1948-02-01), Defenbaugh
patent: 2906339 (1959-09-01), Griffin
patent: 2965031 (1960-12-01), Johns
patent: 3045748 (1962-07-01), Schramm
patent: 3058522 (1962-10-01), McElheny
patent: 3381751 (1968-05-01), McLelland
patent: 3441095 (1969-04-01), Youmans
patent: 3706344 (1972-12-01), Vann
patent: 3912013 (1975-10-01), Vann
patent: 3957115 (1976-05-01), Kerzee
patent: 3990507 (1971-11-01), Vann
patent: 4078611 (1978-03-01), Vann
patent: 4113016 (1978-09-01), Trott
patent: 4158389 (1979-06-01), Chammas et al.
D & D Company Ltd.
Pate III William F.
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