Downhole guide member for multiple casing strings

Details Downhole guide member for multiple casing strings Downhole guide member for multiple casing strings

1998-06-22

2000-01-11

Dang, Hoang

Wells

Submerged well

Connection or disconnection of submerged members remotely...

1662416, 175 5, E21B 704, E21B 1710

Patent

active

060125292

ABSTRACT:
A downhole casing guide member comprising a structure having a unitary formation wherein in a plane perpendicular to a center longitudinal axis of the structure, the unitary formation is generally "Y" shaped in two opposite directions about the center longitudinal axis. The downhole casing guide member further comprises at least one clamping bracket member securable to the structure. The unitary formation of the structure serves to maximize available flow area for flow of fluid, liquid slurry and/or cement around the contour of the unitary formation and maximize the diameters of casing strings which may be run within a conductor casing; and tapered upper and lower shoulders on the casing guide member ease passage of the guide member into and out of a conductor casing. Further, the overall configuration and shape of the downhole guide member eases passage of casing strings lowered into or removed from the conduits formed by the guide member.

REFERENCES:
patent: 3108639 (1963-10-01), Brooks
patent: 3276522 (1966-10-01), Jay
patent: 4478278 (1984-10-01), Klein
patent: 4483395 (1984-11-01), Kramer et al.
patent: 5377752 (1995-01-01), Farrara
patent: 5458199 (1995-10-01), Collins et al.
patent: 5560435 (1996-10-01), Sharp
patent: 5810086 (1988-09-01), Bridges
patent: 5918675 (1999-07-01), Borak, Jr. et al.

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