Stabilizing and cementing lateral well bores

Wells – Processes – Cementing – plugging or consolidating

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Details

166313, E21B 3310

Patent

active

058969276

ABSTRACT:
The present invention provides methods of stabilizing the portion of an open-hole lateral well bore adjacent to and extending a distance from the junction of the lateral well bore with a primary well bore to prevent erosion and deformation of the lateral well bore during subsequent drilling and other operations. The methods basically comprise introducing a cement slurry into the portion of the lateral well bore adjacent to and extending a distance from the aforesaid junction under hydraulic pressure whereby the cement slurry enters voids and pore spaces in the walls of the well bore, allowing the cement slurry to set into a hard mass in the lateral well bore and then drilling excess set cement out of the lateral well bore. The stabilization ensures that when a liner is cemented in the lateral well bore, the junction between the liner and the casing in the primary well bore is sealed.

REFERENCES:
patent: 5301760 (1994-04-01), Graham
patent: 5353876 (1994-10-01), Curington et al.
patent: 5477925 (1995-12-01), Trahan et al.
patent: 5499681 (1996-03-01), White et al.
patent: 5564503 (1996-10-01), Longbottom et al.
patent: 5566763 (1996-10-01), Williamson et al.
patent: 5649595 (1997-07-01), Davis et al.

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