| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_989ecca69fc47fadd546bf9a0db59629 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-40 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-506
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-5045
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B41-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B33-134
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-516 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-40 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-506
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B41-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-516
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B33-134
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-504 |
| filingDate |
2018-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2022-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9de2464033842f60e1b717a8285784bf |
| publicationDate |
2022-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-11261366-B2 |
| titleOfInvention |
Barrier pills containing viscoelastic surfactant and methods for using the same |
| abstract |
Methods for separating fluids with a barrier pill within a downhole environment are provided. The method includes introducing a barrier pill fluid into the wellbore containing a first fluid to form the barrier pill on top of the first fluid in the wellbore and introducing a second fluid into the wellbore. The barrier pill separates the first fluid and the second fluid. The barrier pill includes a viscoelastic surfactant and an aqueous fluid, such as a brine containing water and about 5 wt % to about 50 wt % of a salt. |
| priorityDate |
2017-03-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |