http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112226221-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-10 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-584 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-58 |
| filingDate | 2020-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112226221-B |
| titleOfInvention | Nano silicon dioxide oil displacement agent and preparation method and application thereof |
| abstract | The invention belongs to the technical field of nano materials, and particularly relates to a nano silicon dioxide oil displacement agent as well as a preparation method and application thereof. The nano silicon dioxide oil displacement agent is prepared by adopting a scheme I or a scheme II; the scheme I comprises the following steps: adding a silicon dioxide precursor into a solvent, adding a surfactant, stirring to form a stable dispersion liquid, then adding an organic silicon modifier, adjusting the pH to 12 to 13, and reacting for 2 to 5 hours at 40 to 80 ℃ to obtain the nano silicon dioxide oil displacement agent; the scheme II comprises the following steps: sequentially adding the surfactant and the organic silicon modifier into the solvent, uniformly stirring at 20 to 80 ℃ to form a stable dispersion liquid, then adding the silicon dioxide precursor into the dispersion liquid, adjusting the pH to 12 to 13, and reacting for 2 to 5 hours at 40 to 80 ℃ to obtain the nano silicon dioxide oil displacement agent. The organic silicon modified nano silicon dioxide is a nano dispersion liquid with amphipathicity, the particle size is 2 to 10nm, the nano silicon dioxide oil displacement agent is used for a water injection well and an oil production well of an oil field (including an oil field with extremely low permeability), the wettability of rock can be changed, the oil-water interfacial tension can be reduced, the pressure can be reduced, the injection can be increased, and the crude oil recovery rate can be increased. |
| priorityDate | 2020-10-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.