Compositions and methods for treating lost circulation

Details Compositions and methods for treating lost circulation Compositions and methods for treating lost circulation

2004-05-12

2010-06-01

Gay, Jennifer H (Department: 3676)

Wells

Processes

Cementing, plugging or consolidating

C166S300000

Reexamination Certificate

active

07726400

ABSTRACT:
A cement system for use in treating lost circulation includes a slurry of cement, water and a super-absorbent polymer which absorbs free water in the slurry to form a gel—ore preferably a solid-like structure—when placed in the well, and which releases the absorbed water to the cement hydration reaction as the cement sets. The absorption of water causes the slurry to develop a solid-like structure. In one embodiment, the superabsorbent is polyacrylamide or modified crosslinked poly(meth)acrylate. Also presented is a method of treating lost circulation by pumping the above-mentioned cement system.

REFERENCES:
patent: 3448800 (1969-06-01), Wahl et al.
patent: 4664816 (1987-05-01), Walker
patent: 4724906 (1988-02-01), Sydansk
patent: 5945387 (1999-08-01), Chatterji et al.
patent: 6105674 (2000-08-01), Liao et al.
patent: 6581701 (2003-06-01), Heying
patent: 6983799 (2006-01-01), Reddy et al.
patent: 2004/0168802 (2004-09-01), Creel et al.
patent: WO9510764 (1995-04-01), None

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