| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_471b1fdc9df48a2ebbf58fad78712a13
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5cab5aa23bd3adc532b549fa25e60057 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-887
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B33-138
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-588 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F222-38
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B33-138
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-588 |
| filingDate |
2020-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_02e3a8b5300675c6be30eeb8a0fff414
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d76a8ce3144666b919aea66defe4175e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_49b7fc83cc18256ccdbc47015f2af828
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ec6622a6cf34bdb5c0be62da4ff0c38a |
| publicationDate |
2022-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CN-113969761-A |
| titleOfInvention |
Periodic profile control and flooding method for ultrahigh water-cut oil reservoir |
| abstract |
The invention discloses a periodic profile control and flooding method for an ultrahigh water-cut oil reservoir, which comprises the following steps: and when the water content of the produced liquid of the water-drive oil reservoir reaches more than 95%, alternately injecting profile control liquid and water in sequence to perform periodic profile control. The profile control method can change the direction of liquid flow, expand the swept range of injected water and extract the original unswept crude oil, thereby improving the recovery ratio of the crude oil, reducing the water content of the produced liquid and improving the utilization ratio of the injected water. |
| priorityDate |
2020-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |