High temperature perforating apparatus

Details High temperature perforating apparatus High temperature perforating apparatus

1975-10-14

1976-11-09

Novosad, Stephen J.

Wells

Means for perforating, weakening, bending or separating pipe...

With disparate below ground feature

166 63, 166297, 175 456, E21B 43119

Patent

active

039905071

ABSTRACT:
A high temperature well completion method is carried out by releasably suspending a perforating gun uphole in a relative low temperature region of the borehole. A wireline actuated releasable coupling drops the armed gun, and the gun comes to rest adjacent to a hydrocarbon bearing formation located downhole in a high temperature region of the borehole. The downward motion of the gun is arrested at a preselected location, causing the gun to be detonated and the casing to be perforated before the gun reaches temperature equilibrium.

REFERENCES:
patent: 2866508 (1958-12-01), Church
patent: 2974739 (1961-03-01), Dean
patent: 3058523 (1962-10-01), McElheny
patent: 3190372 (1965-06-01), Johnson
patent: 3193013 (1965-07-01), Whiteside
patent: 3199287 (1965-08-01), Kinley
patent: 3530948 (1970-09-01), Garrett
patent: 3706340 (1972-12-01), Shuster
patent: 3706344 (1972-12-01), Vann

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