| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8cac4ca8509c3ca45aca9a0274628c6e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-502
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-36 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B21-14 |
| filingDate |
2007-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2012-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dfdb72690823de9f69337ff8a4417eba
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5b652de784feb92cea919eca44fed449
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff9a3e3a9f043bf0786cfd4d5fa9ea8c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3bf6c1389237043c0af01d9275c3101c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_af86a618e553faa1c958a4b8d676524e |
| publicationDate |
2012-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2656375-C |
| titleOfInvention |
Fluid loss additive for oil-based muds |
| abstract |
A fluid loss control agent composition that includes a product resulting from a condensation reaction of quebracho with at least one organophilic species that includes a reactive amine is disclosed. Also disclosed, is an invert emulsion drilling fluid and method of drilling a subterranean hole with said invert emulsion drilling fluid wherein the invert emulsion drilling fluid includes an oleaginous continuous phase, a non-oleaginous discontinuous phase, an emulsifier present in an amount sufficient to stabilize the invert emulsion, and a quebracho-based additive resulting from a condensation reaction of quebracho and at least one organophilic species comprising a reactive amine. |
| priorityDate |
2006-07-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |