| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_90e7136bc810b844502b21de846a8a71 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-938
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S507-936 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-885 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-88 |
| filingDate |
1979-07-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1981-05-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f315f6fa2e10673140a1b391e48c04d9 |
| publicationDate |
1981-05-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4267886-A |
| titleOfInvention |
Lignosulfonates carboxylated with chloroacetic acid as additives in oil recovery processes involving chemical recovery agents |
| abstract |
A process for producing petroleum from subterranean formations is disclosed wherein production from the formation is obtained by driving a fluid from an injection well to a production well. The process involves injecting via the injection well into the formation an aqueous solution of lignosulfonates carboxylated with chloroacetic acid as a sacrificial agent to inhibit the deposition of surfactant and/or polymer on the reservoir matrix. The process may best be carried out by injecting the lignosulfonates carboxylated with chloroacetic acid into the formation through the injection well mixed with either a polymer, a surfactant solution and/or a micellar dispersion. This mixture would then be followed by a drive fluid such as water to push the chemicals to the production well. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013133706-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013133705-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2546705-C1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2015034359-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5009268-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2015034360-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2015034357-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2011065832-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6186231-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2022118255-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6942031-B1 |
| priorityDate |
1978-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |