Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Patent
1983-11-14
1985-12-10
Novosad, Stephen J.
Wells
Processes
Perforating, weakening, bending or separating pipe at an...
166 55, 166386, 166317, 166318, 175 456, E21B 3408, E21B 3414, E21B 4311
Patent
active
045573310
ABSTRACT:
A method and apparatus for effecting the perforation of a well casing and the adjoining production formation comprises a tubular housing communicating between a perforating gun housing and the lower end of a tubular string. The perforating gun housing which is adapted to be carriable by the tubular string contains an impact actuated firing head and the tubular housing contains a port normally closed by sleeve valve. The valve is biased towards an open position but is selectively secured in its closed position by a frangible restraining mechanism which extends into the free fall path of a detonating bar dropped through the tubular tool string and is removed by the detonating bar to initiate the opening of the port sleeve valve prior to impacting the firing head. In a modification, the sleeve valve is shifted to its open position by fluid pressure produced in the casing annulus subsequent to the firing of the perforating gun.
REFERENCES:
patent: 3029875 (1962-04-01), Moller
patent: 3353609 (1967-11-01), Jensen
patent: 3831680 (1974-08-01), Edwards et al.
patent: 3980134 (1976-09-01), Amancharla
patent: 4062406 (1977-12-01), Akkerman et al.
patent: 4151881 (1979-05-01), Armstrong
patent: 4299287 (1981-11-01), Vann et al.
patent: 4445571 (1984-05-01), Hushbeck
patent: 4484632 (1984-11-01), Vann
Baker Oil Tools, Inc.
Novosad Stephen J.
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