| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9e183b88ffc72e64d1b805a946af58de |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-922
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-903 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-685
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-706 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-70
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-68 |
| filingDate |
2001-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c21d348da22f9b057d9285604289d29f |
| publicationDate |
2002-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-2369367-A |
| titleOfInvention |
Viscosity breaker for borate-crosslinked fracturing fluid |
| abstract |
An aqueous fluid comprising at least one borate-crosslinked polymer, at least one pH buffer selected from hydroxides and carbonates, and a material capable of releasing cations in an amount effective to reduce the pH of the fluid and remove at least a portion of borate ions from the crosslinked polymer, and water. A method for breaking the viscosity of aqueous fluids using said compositions with divalent cations is also claimed, as is a fluid also comprising an enzyme capable of breaking the crosslinked polymer at reduced pH. The invention finds application in wells for the recovery of oil and other hydrocarbons. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9982520-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2377238-B |
| priorityDate |
2000-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |