| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_59aeacfc8c0fb15a69d7dd77723e2c36 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-32 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B7-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B21-003
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-508 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B24-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-68 |
| filingDate |
2015-05-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_23617027b7bac0c95592505701e3745f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ad26a4f1462fb8ee0028982cdec7a2d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e16aff44a2e583d3af86a948d875c68b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f03753ca61c7a1a6be5c4faa341ff6d1 |
| publicationDate |
2015-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2015171601-A1 |
| titleOfInvention |
High temperature and high pressure fluid loss additives and methods of use thereof |
| abstract |
Disclosed are high temperature and high pressure fluid loss additives comprising: a) a humic substance, and b) a tetrapolymer prepared from polymerizing: i) acrylamide (AM), ii) 2-acrylamido-2-methylpropane sulfonic acid (AMPS), iii) l-allyloxy-2-hydroxypropyl sulfonate, and iv) acrylic acid. The use of such high temperature and high pressure fluid loss additives in water-based drilling fluids in oil-field drilling operations is also disclosed. |
| priorityDate |
2014-05-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |