| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_010994d8c553afc023cfbf817a088ad8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7f0c18dc482ebc4b45ad14421a5ceaaf |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-24 |
| filingDate |
1989-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1991-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_249978afedeb0dc56d8ebf5c06c8915f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df890626182ad0f36d4f55d741dc7af4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_250841143e00abd22652527a7554595f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7acd5caee209b11fb8a86a8827d4111f
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c8a2d57acce82c1a5bf8cbb1f1fa62cd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dcf7d41862bfd143718f2dde5155b82f |
| publicationDate |
1991-06-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
SU-1654326-A1 |
| titleOfInvention |
Admixture for aqueous clay drilling fluids |
| abstract |
The invention relates to the drilling of wells and is intended for the chemical treatment of drilling fluids. The purpose of the invention is to improve the lubricating properties of the additive while improving the inhibitory properties. The lubricant additive is prepared by mixing hydrated polyolnacrylonitrile with water and dimethyldiallyl-ammonium chloride copolymer and acrylic or methacrylic acid with a ratio of the indicated comonomers (13-33): (6 / -87), respectively, while the methacrylic acid is contained in the additive - 10-50 wt.%. 2 tab. about “l |
| priorityDate |
1989-10-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |