| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_49e2d2c78f1756794d18b135d883b2e7 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4816
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-4829
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-426
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-508
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-73
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-267
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-261
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-227
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B33-138
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-26 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-25 |
| filingDate |
2018-05-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2019-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f27c7511e2a88bd172bd7399f3fde58b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_17f1b5cc249f7b78263b615e15a736fe |
| publicationDate |
2019-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-3006666-C |
| titleOfInvention |
Methods and materials for refracturing a partially depleted oil and gas well |
| abstract |
Methods and materials for treating completed oil and gas wells that have been partially depleted as a prelude to refracturing are provided. These methods include: (a) preparing a polyurethane diverting agent by mixing a polyol-containing component and a polyisocyanate-containing component; and (b) introducing the polyurethane diverting agent into the well. The polyol-containing component includes a polymeric polyol having a viscosity at 25°C of no more than 1000 mPa.cndot.s and the isocyanate-containing component includes an unblocked (cyclo)aliphatic polyisocyanate polymer, optionally including allophanate groups, and having a viscosity at 25°C of no more than 1000 mPa.cndot.s and at least 99% solids content. |
| priorityDate |
2017-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |