| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_802cb425a297a0766bc7d8cdc2f03898 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-936 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-594 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-594 |
| filingDate |
1980-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1981-09-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e4c1ef0f9ce4527158458b0d17ba7a95
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4e7820e308709c499b9efb012c5915f3 |
| publicationDate |
1981-09-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4288334-A |
| titleOfInvention |
Process for secondary recovery of hydrocarbons |
| abstract |
Hydrocarbons are recovered from a subterranean hydrocarbon-bearing formation penetrated by an injection well and a production well by displacing hydrocarbons toward the production well using a drive fluid such as water containing dissolved therein: (a) a small amount of a nonionic surfactant of the formula RO(CH2CH(OH)CH2O)m(CH2CH2O)nH where R is alkyl or alkylaryl, n is an integer of from 1 to about 20 and m> 1, and (b) a small amount of an anionic sulfonate or sulfate surfactant. Optionally the drive fluid may be saturated with natural gas and/or carbon dioxide at the injection pressure. A polymeric thickening agent also may be included in the drive fluid, if desired. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10344204-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4739831-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10385257-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10982520-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4702319-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10385258-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10012064-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4466891-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005085397-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4585065-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6828281-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5363915-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4425242-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4440653-A |
| priorityDate |
1980-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |