http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2014133747-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-24 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-685 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-90 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-887 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-68 |
| filingDate | 2013-01-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2014133747-A |
| titleOfInvention | COMPOSITIONS SUITABLE FOR HYDROLYSIS OF GUAR GUM IN MEDIA WITH HIGH pH VALUES, AND WAYS RELATED TO THEM |
| abstract | 1. A method of hydraulic fracturing an underground formation surrounding a wellbore, the method comprising the following steps: a) combining an aqueous fluid capable of hydrating a polymer, a crosslinking agent, and an enzymatic destructive agent selected from an alkaliphilic bacterium selected from the group consisting of family 5 glycoside hydrolases, family of 26 glycoside hydrolases and mixtures thereof, to obtain a fluid based on a crosslinked polymer; b) injection of a gel based on a crosslinked polymer into the wellbore and in contact with formation under pressure sufficient to fracture the surrounding underground formation; and c) allowing the enzyme degrading agent to break the crosslinked polymer gel so that it can be removed from the subterranean formation, while the enzyme degrading agent is catalytically active and thermally stable in the temperature range from about 60 ° F to about 225 ° F and at pH in the range from about 7 to about 12.2. The method of claim 1, wherein the enzymatic destructuring agent is selected from the glycoside hydrolase family of 5. The method of claim 1, wherein the enzymatic destructuring agent is selected from subfamily 8 of family 5 of glycosidhydrolases. The method of claim 1, wherein the enzymatic destructuring agent is selected from the family of 26 glycosidhydrolases. The method of claim 2, wherein the enzymatic destructuring agent is selected from the group consisting of endoglucanase, beta-mannanase, exo-1,3-glucanase, endo-1,6-glucanase, xylanase, endoglycekeramidase. The method of claim 1, wherein the enzymatic destructuring agent is selected from the glycoside hydrolase family of 5 and is derived from the alkaliphilic gene of Bacillus sp. N16-5.7. The method of claim 1, wherein the enzymatic degradation |
| priorityDate | 2012-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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