Method and device for perforating a portion of casing in a...

Details Method and device for perforating a portion of casing in a... Method and device for perforating a portion of casing in a...

2005-07-12

2005-07-12

Bagnell, David (Department: 3672)

Wells

Processes

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

C166S055100, C166S055700, C175S062000, C175S078000, C175S080000

Reexamination Certificate

active

06915853

ABSTRACT:
In connection with a method and a tool for preparing a well for the production of hydrocarbons, it is aimed at perforating a casing portion (26) and working surrounding sediment (80) in a channel-forming manner. For this purpose the tool comprises a drilling means for drilling transverse holes through the casing wall when the tool (10), which is arranged to be raised/lowered and rotated about its longitudinal axis, shared by the casing (26), is placed in a fixed position within the well, through which transverse hole (40) and into surrounding sediment a jetting hose means (42,42a) is arranged to jet/dig its way in a channel-forming manner. The drilling and jetting hose means also have inactive stand-by positions protectively retracted within the tool housing (10a), from and into which they may successively be pushed forward into active working positions and again be withdrawn, as a channel (44) is completed in the sediment (80).

REFERENCES:
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patent: 5413184 (1995-05-01), Landers
patent: 5853056 (1998-12-01), Landers
patent: 6125949 (2000-10-01), Landers
patent: 6167968 (2001-01-01), Allarie et al.

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