| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_17e6c778a71c468773a533a0b4dcd1e8 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-34 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-588
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-512
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-685 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-00 |
| filingDate |
2014-07-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4881a78c43a8314c12576a9e768d7bb0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6035aac8b292b6cff793a06328ec177f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_af428a879b29cab05b3a6a90fa3607f7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_15693f36db1551eff4364a2a6aaf4dd7 |
| publicationDate |
2016-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-3041910-A1 |
| titleOfInvention |
Fluid composition comprising crosslinked polyvinylpyrrolidone for oil field applications |
| abstract |
Disclosed herein is a water based High-Temperature High-Pressure (HTHP) fluid composition having a density of about 8.3 to about 21.0 ppg, comprising: (i) a brine based fluid; (ii) about 0.5 ppb to about 20 ppb of crosslinked polyvinylpyrrolidone (PVP); (iii) about 5 ppb to about 100 ppb of bridging agents selected from the group consisting of CaCO3 and sized salts; and (iv) optionally about 0 ppb to about 25 ppb of Fluids Loss Additives (FLA), wherein the crosslinked PVP is prepared by precipitation polymerization of vinylpyrrolidone (VP) in an organic solvent in the presence of a crosslinking agent and a free radical polymerization initiator, wherein the crosslinking agent is present in an amount of from about 0.1 wt. % to about 5.0 wt. % based on the weight of the vinylpyrrolidone. Also discloses a method of drilling and completing operations in a subterranean formation. |
| priorityDate |
2013-09-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |