| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d9731233d8160d4f79c558937e912555 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-602
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-885
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-887
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-685 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-88 |
| filingDate |
2018-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_249b2664f015b19ce814ff10183f8ce4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d8eec562b0298b0e7cad6e45d5e9dc55 |
| publicationDate |
2018-10-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2018282616-A1 |
| titleOfInvention |
Aqueous downhole fluids having polymers and charged nanoparticles |
| abstract |
Polymers comprising polyacrylic acid or polyacrylamide grafted onto a polyethylene oxide/polypropylene oxide copolymer and/or charged nanoparticles may be added to an aqueous downhole fluid having polymers therein to viscosify the aqueous downhole fluid using an amount of such grafted polymers that is less than the amount of polymers that would be needed to viscosify an identical aqueous downhole fluid absent such grafted polymers. The grafted polymers may confer a reversible viscosity property to the fluid when the grafted polymers are dissolved in water or brine in a certain pH range. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109370551-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11001750-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114058342-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11236264-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11326092-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11352548-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11597867-B2 |
| priorityDate |
2013-08-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |