http://rdf.ncbi.nlm.nih.gov/pubchem/patent/SU-1663182-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_04fbd99b286be35c10763573e648c3c2 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-467 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B33-138 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B28-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-32 |
| filingDate | 1989-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1991-07-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a428d1a6c9723742f13091fbc7ef56a4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_17b49884de19ea301828d247c797c4d4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_98c6b597373714bdddf5fc753ad665a0 |
| publicationDate | 1991-07-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | SU-1663182-A1 |
| titleOfInvention | Method of water influx shutoff in borehole |
| abstract | The invention relates to an oil producing industry. The goal is to increase the insulation efficiency by reducing the mechanical and oxidative degradation of polyacrylamide. N 1 N - dimethylformamide ratios of 1 wt.h. dimethylformamide and 0.35 - 0.55 wt.h. water. The polymer in this state exists indefinitely and does not undergo mechanical or oxidative degradation. The prepared solution has a viscosity of 0.02-0.1 Pa . which allows it to be injected into the formation. After the polymer solution is injected into the well, an aqueous solution of potassium bichromate is injected. When insulated with an aqueous solution of polyacrylamide with the addition of dimethylformamide, mechanical and oxidative degradation of the polymer is eliminated, resulting in an increase in the viscosity and strength of the polymer, and consequently, its insulating properties. 1 il. |
| priorityDate | 1989-03-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.