| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1f8b3fbda04b27aa4b8a869179943a42 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-12 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C217-08 |
| filingDate |
2020-05-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ca853ae6c644e02aa78c4946e2d872db
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d0dfe93efe02226272f4c90db4e5069e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3fd4f83b047447716ebfe4a248abd194 |
| publicationDate |
2022-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-3986977-A1 |
| titleOfInvention |
Synergistic performance of amine blends in shale control |
| abstract |
The present disclosure provides water-based well treatment fluids methods of using such fluids in treating subterranean formations to prevent swelling and/or migration of fines. The water-based well treatment fluid contains an aqueous continuous phase and a clay stabilizing agent comprising less than 20% by weight, based on the total weight of the clay stabilizing agent, of an unhindered primary amine and a second amine selected from an alkanolamine, a polyalkylene polyamine, a compound having a formula R4-(CH2)d-NH2 where R4 is a piperazino group or a morpholino group and d is an integer from 0 to 10, a compound having the formula where h is an integer from about 2 to about 7 and a mixture thereof. |
| priorityDate |
2019-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |