Method and apparatus for multi-zone casing perforation

Details Method and apparatus for multi-zone casing perforation Method and apparatus for multi-zone casing perforation

1987-10-01

1988-12-13

Massie, IV, Jerome W.

Wells

Processes

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

166 55, 175 457, E21B 43117

Patent

active

047903830

ABSTRACT:
A perforating-gun spacer used to position a plurality of guns to perforate a multizone reservoir is formed of a plurality of telescoping sections which are held in an extended position by tapered pins. A slidable piston maintains the pins in engaged position. When the perforating guns are fired, the resultant pressure pulse in the wellbore fluid moves the piston upwardly out of engagement with the restraining pins which then disengage permitting the telescoping sections to collapse when the expended tool is dropped into the bottom of the wellbore. This avoids partial or complte blockage of the lowermost production zone by the upper portion of the perforating gun string.

REFERENCES:
patent: 2876843 (1959-03-01), Huber
patent: 2927534 (1960-03-01), Le Bus
patent: 3003558 (1961-10-01), Orr
patent: 4040482 (1977-08-01), Vann
patent: 4164886 (1979-08-01), Hallmark
patent: 4515217 (1985-05-01), Stout
patent: 4526233 (1985-07-01), Stout
patent: 4612992 (1986-09-01), Vann et al.
patent: 4619333 (1986-10-01), George
patent: 4650010 (1987-03-01), George et al.

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