http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112979870-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-882 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-68 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F226-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-58 |
| filingDate | 2021-03-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112979870-B |
| titleOfInvention | Instant drag reducer and preparation method thereof |
| abstract | The invention discloses an instant drag reducer and a preparation method thereof, relating to the technical field of drag reducers for oil and gas development; the PAAD copolymer is formed by copolymerizing acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and a hydrophobic monomer. The invention also discloses a preparation method of the instant drag reducer, which comprises the following steps: preparing a polyethylene glycol solution; adding acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and a hydrophobic monomer into a polyethylene glycol solution to obtain a mixed solution, and introducing nitrogen; and (3) heating to 40-60 ℃, adding an initiator, and carrying out polymerization reaction to obtain the instant drag reducer. According to the invention, acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and a hydrophobic monomer are copolymerized to form the instant drag reducer without adding a stabilizer, a surfactant and an organic solvent, so that the problems that the existing drag reducer causes pollution to underground water after being injected into a stratum and cannot meet the requirement of environmental protection are solved. |
| priorityDate | 2021-03-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 35.