| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c7a953137ec92500ef1ae7be8ca984b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_46ffc67cd29dd51dbd0bc0e335dd3994 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-885
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-58 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-25
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-72 |
| filingDate |
1997-07-11^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2001-09-26^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_92e90cba6980d6094f82a752986a88c5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1f7b5b07aead258eacc89473685c0a2c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6be92bd66689d82780e840a496804a3b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b94870d5beea4329c89ffd575038ee57 |
| publicationDate |
2001-09-26^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0912815-B1 |
| titleOfInvention |
Use of oil and gas field chemicals |
| abstract |
A method of recovering or increasing the recovery of oil and/or gas from an underground formation involving injecting into the formation, preferably in the form of an aqueous solution, at least one mono alkyl ether of polyethylene glycol in which the alkyl group has 3-5 carbons and the polyethylene glycol contains 3-6 ethylene oxy units e.g. butyl ether of triethylene glycol. Especially preferred are mixtures comprising that and at least one mono alkyl ether of mono or di ethylene glycol e.g. a mixture of butyl triglycol ether, butyl tetraglycol ether, butyl pentaglycol ether and butyl diglycol ether. The method of the invention may be applied to well stimulation treatments such as water blocking, sand consolidation, sandstone acidising and methods of increasing the recovery of oil such as tertiary oil recovery. |
| priorityDate |
1996-07-17^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |