http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2254458-C1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-584 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-22 |
| filingDate | 2003-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2005-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f239517e8af6205f41257a187184eaf6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_222bf7332c58514377ef934e3d8853a7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c2294f0cb23c13d34144d8442ec43667 |
| publicationDate | 2005-06-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2254458-C1 |
| titleOfInvention | Method of preparing reagent to control permeability of oil reservoirs, preferably of porous fractured and porous types |
| abstract | FIELD: oil and gas production. n SUBSTANCE: invention is designed for controlling permeability of formations both in productive and injecting wells, which formations are predominantly composed of porous fractured and porous reservoirs. In a method of preparing reagent consisting in mixing aqueous alkali metal solution with non- saponified vat residues from fatty acid production, refluxing resulting mixture, cooling it to 50-60°C, and adding oxyethylated (9-12) alkylphenol, (i) before addition of said vat residues, alkali solution is supplemented by 30-30% water suspension of pulp-and-paper production waste; (ii) said non-saponified vat residues originate from production of synthetic or vegetable-origin fatty acid; (iii) said alkali metal hydroxide is sodium hydroxide; and (iv) starting components are taken in following proportions, wt %: non-saponified vat residues 2-40. sodium hydroxide 0.42-4.2, oxyethylated alkylphenol 0.5-5.0, pulp-and-paper production waste 1-10, and water - the balance. n EFFECT: increased degree of agglomeration of disperse phase particles of prepared reagent while simultaneously ensured stability and uniformity of phase state of both reagent itself and working solutions thereof over a long time period being resistant to multi-salt mineralization, and augmented assortment of formation permeability control reagents. n 1 tbl |
| priorityDate | 2003-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 23.