Compositions and methods for treating lost circulation
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 reac...
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| Main Authors | , |
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| Format | Patent |
| Language | English |
| Published |
01.06.2010
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| Online Access | Get full text |
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| Summary: | 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. |
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