| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e938e28337fbaa9944d781f3ccf86b5e |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-936 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-592
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-594
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-24 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-594
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-592 |
| filingDate |
1989-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1990-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_32ad74a8486d3f7aa9fcc9c7270ff721 |
| publicationDate |
1990-11-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4967837-A |
| titleOfInvention |
Steam enhanced oil recovery method using dialkyl aromatic sulfonates |
| abstract |
A method of enhanced oil recovery using foam to improve the effectiveness of steam to mobilize viscous crude, either for steam stimulation in a single well or for steam drive between wells. The new surfactant composition used comprises alkyl aromatic sulfonates having an average molecular weight of from about 400 to about 600 and comprising at least 2 alkyl groups wherein one alkyl group is linear and has from 3 to about 30 carbon atoms and one alkyl group is a branched chain and has from 5 to about 25 carbon atoms as the effective agent for the steam foamer. The dialkyl aromatic sulfonates having linear and branched chain substitutes provide significant economic advantages over alkyl aromatic sulfonates having only branched chain substituted and provide significant performance advantages over alkyl aromatic sulfonates which do not contain branched chain alkyl groups. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2013019817-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7967955-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7681643-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7150320-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2014151712-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7717174-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9897309-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8955581-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2014245973-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008113881-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7438129-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010224364-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8899326-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5273682-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10767859-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7849921-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9845668-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009127091-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5968879-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2013020078-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006032630-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7428926-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10214683-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6776234-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6733636-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8746336-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2016305222-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007051513-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005279500-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7077201-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7312184-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010200231-A1 |
| priorityDate |
1989-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |