Wells – Processes – Perforating – weakening – bending or separating pipe at an...
Patent
1996-03-20
1998-01-06
Neuder, William P.
Wells
Processes
Perforating, weakening, bending or separating pipe at an...
175 452, F21B 43116
Patent
active
057044260
ABSTRACT:
A new zonal isolation method and apparatus perforates a plurality of zones of a formation, while isolating each perforated zone from every other zone, with one trip into wellbore, and without requiring the circulation of a kill fluid throughout the wellbore following perforation to kill the well so that a packer and/or a perforating gun may be removed from the well. The new zonal isolation apparatus includes a perforating gun and a plug or packer connected to the perforating gun. The new zonal isolation method includes detonating the perforating gun thereby creating a set of perforations in the formation; moving the perforating gun and plug/packer uphole until the plug/packer is situated at a particular position in the wellbore which is disposed directly above the set of perforations in the formation; and setting the plug/packer at the particular position in the wellbore. The perforated zones located below the plug/packer are isolated from annulus fluids, pressure, or kill fluids which are normally introduced above the plug/packer in the wellbore.
REFERENCES:
patent: 2769497 (1956-11-01), Reistle, Jr.
patent: 3433305 (1969-03-01), Bell
patent: 3856094 (1974-12-01), Davis
patent: 5044437 (1991-09-01), Wittrisch
patent: 5353875 (1994-10-01), Schultz et al.
Meek Dale E.
Rytlewski Gary L.
Bouchard John H.
Neuder William P.
Ryberg John J.
Schlumberger Technology Corporation
Waggett Gordon G.
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