http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103773342-B
Outgoing Links
Predicate | Object |
---|---|
classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-5045 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-512 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-5083 |
classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-508 |
filingDate | 2013-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate | 2017-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationDate | 2017-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber | CN-103773342-B |
titleOfInvention | Large-pore composite plugging system and preparation method thereof |
abstract | The invention provides a large-pore composite plugging system and a preparation method thereof, belonging to the technical field of oil exploitation. The large-pore composite plugging system comprises amphoteric polyacrylamide solution with concentration of 0.2-0.5wt%, a flocculation agent solution and inorganic granules, wherein the flocculation agent solution is a cationic polymer solution with concentration of 0.2-0.5wt% or cationic surface active agent with concentration of 1-4wt%. The large-pore composite plugging system has the advantages of high elasticity, high plugging capability, movability and good thermal stability. |
priorityDate | 2013-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.