US Patent No: 7,866,394
Number of patents in Portfolio can not be more than 2000
Compositions and methods of cementing in subterranean formations using a swelling agent to inhibit the influx of water into a cement slurry
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Jan 11, 2011
Issued date -
Feb 27, 2003
filing date -
10/375,183
serial no -
In Force
status
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Abstract
Methods of cementing in subterranean formations, cement compositions, and methods for making the compositions are provided. A cement slurry is passed into a subterranean formation, and a swelling agent is passed into the subterranean formation to reduce an amount of water flowing into the cement slurry. The swelling agent may be combined with a carrier fluid before being displaced into the subterranean formation. Alternatively, the swelling agent may be pre-mixed with the cement slurry to form a new cement composition, followed by displacing the cement composition into the subterranean formation. The swelling agent is present in an amount effective to, upon absorption of water and swelling to form a gel mass, substantially block the flow path of the water into the cement composition or reduce losses to low pore pressure intervals, thereby preventing the integrity of the cement composition from being compromised or lost to voidage, fractures, fissures, etc.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
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Patent Citation Ranking
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| Fee | Large entity fee | small entity fee | micro entity fee | due date |
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