http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106967406-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-588 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F212-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F228-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F226-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-588 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-18 |
| filingDate | 2017-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-08-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106967406-B |
| titleOfInvention | Oil displacement system and method for heterogeneous oil reservoir |
| abstract | The invention provides an oil displacement system for heterogeneous oil reservoirs, which comprises associative polymers; the molecular weight of the associated polymer is 103.6-4021.5 ten thousand; the associative polymer is obtained by polymerizing acrylamide, 0.11-9.96% of hydrophobic monomer and 0-15.4% of functional monomer in molar percentage; the concentration of the associated polymer in the oil displacement system is 400-3500 mg/L. Compared with the prior art, the invention adopts the associative polymer obtained by introducing a small amount of hydrophobic monomers and functional monomers on the main chain of the polymer molecule, hydrophobic groups are mutually associated in aqueous solution to form a space network structure, thereby improving the system viscosity, establishing a high resistance coefficient and a high residual resistance coefficient, effectively reducing the permeability of a relatively high permeability area and having better profile control effect; the introduction of functional monomers and a space network structure improve the water wave and efficiency of injection, thereby better improving the recovery ratio of the heterogeneous oil reservoir. |
| priorityDate | 2017-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 82.