http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109401741-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-16 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-22 |
| filingDate | 2017-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109401741-B |
| titleOfInvention | Method for reducing adsorption loss of oil displacement fluid |
| abstract | The invention relates to a method for reducing adsorption loss of a displacement fluid, which mainly solves the problem that the displacement efficiency of a displacement system is reduced due to the change of concentration and/or proportion caused by adsorption when a surfactant serving as a main component of the displacement fluid is displaced in a petroleum-bearing stratum, particularly a clay-bearing stratum in the prior art. The method is characterized in that 0.001-10 parts of adsorption inhibitor is added into the displacement fluid containing 1 part of oil displacement agent in parts by mass of the oil displacement agent contained in the displacement fluid; the oil displacement agent contains a surfactant, and the adsorption inhibitor is at least one of a carboxyl-containing small molecular compound, a polymer with the molecular weight of 1000-500000 and an alkaline compound. |
| priorityDate | 2017-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 122.