http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2490298-C2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_545d83073c26e2e5e959a9b7146f8acd |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-685 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-512 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F7-003 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B33-138 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-26 |
| filingDate | 2008-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2013-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_133e70038f40cdb70eef51bcf0fc4f1a |
| publicationDate | 2013-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2490298-C2 |
| titleOfInvention | Method of preparing compositions of zirconium-based cross-linking agent and use thereof at oil deposits |
| abstract | FIELD: chemistry. n SUBSTANCE: invention relates to zirconium chelates and use thereof at oil deposits. The method of preparing a solution of a zirconium-alkanolamine-hydroxy carboxylic acid complex involves a step where an alcohol solution of a zirconium complex is brought into contact with alkanolamine and then with α-hydroxy carboxylic acid to obtain said solution. The cross-linking composition contains an aqueous liquid, a pH correcting buffer and said solution. A method for hydraulic fracturing an underground formation involves pumping said composition into the formation at a rate and pressure sufficient to form, reopen and/or widen cracks. A method for selective plugging permeable zones and leaks in underground formations involves pumping said composition into a permeable zone or leakage point. The invention is developed in subclaims. n EFFECT: providing satisfactory viscosity of the cross-linking composition during hydraulic fracturing and plugging permeable zones in underground formations at high pH and temperature in the formation of 275°F (135°C) or higher. n 11 cl, 4 ex, 1 tbl |
| priorityDate | 2007-12-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 75.