http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113943398-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9d67f142f6741ea5e7719b0d0531dc7c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-68 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-882 |
| classificationIPCInventive | 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/C08F226-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F226-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-68 |
| filingDate | 2021-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d18295dc8d9f04de5ea5f08e84d38f48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6c081f2f6d57845e383b86d54976698c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_039d5e43613825ae0327fb41ca14da42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1e15ea2973593f3591f3277d4f0cee4a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c71ccf6fd83fa9af8dc86eb66d622957 |
| publicationDate | 2022-01-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113943398-A |
| titleOfInvention | A kind of preparation method of thickener for high temperature resistant instant acidizing fracturing fluid |
| abstract | The invention relates to a method for preparing a thickening agent for high-temperature resistant instant acidizing fracturing fluid, which comprises acrylamide monomer as acrylamide, two quaternary ammonium salt cationic monomers, sulfonic acid group-containing monomer, and a heterocyclic structure. The monomer is copolymerized by radical redox and azo salt in aqueous solution, and after polymerization, it is granulated, dried, and ground into particles below 40 mesh. By introducing sulfonic acid group-containing monomers and heterocyclic ring-containing monomers, the temperature resistance and instant solubility of cationically modified polyacrylamide are improved. By introducing two quaternary ammonium salt cationic monomers for copolymerization, the synthesized cationic modified polyacrylamide greatly improves the viscosity of acid solution and the stability of strong acid to clay, and can be used as strong acid-based hydraulic cracking fluid. thickener. The addition of the heterocyclic ring on the chain link enhances the stability of the acid thickener, and at the same time inhibits the expansion and migration of the fracturing fluid to the formation clay in the later stage. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-116535566-A |
| priorityDate | 2021-12-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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