Wells – Means for perforating – weakening – bending or separating pipe... – With disparate below ground feature
Patent
1994-04-04
1996-05-07
Tsay, Frank S.
Wells
Means for perforating, weakening, bending or separating pipe...
With disparate below ground feature
166316, E21B 2900
Patent
active
055137032
ABSTRACT:
There are disclosed methods and apparatus for perforating and treating zones of a well, as by hydraulic fracturing, stimulating and acidizing, and otherwise performing related activities within a well, wherein a plurality of perforating assemblies containing shaped charges are connected as part of a casing liner which is lowered into a well bore and then anchored therein by a column of cement in the annulus between the liner and bore to locate the assemblies opposite zones in a horizontal section of the well. Work strings are lowered into selected assemblies to cause tools carried thereby to sequentially detonate the shaped charges to perforate the zone opposite thereto and to selectively open or close the perforated zones by shifting a sleeve within a housing of the assembly as well as treating the perforated zones.
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Conoco, Casing Conveyed Perforating Technology, date unknown.
Akkerman Neil H.
Barton John A.
Mills Aubrey C.
Newman Billy R.
AVA International Corporation
Tsay Frank S.
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