| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d9731233d8160d4f79c558937e912555 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-062
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-27
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-604
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C215-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-885 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C215-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-88
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-60
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-68 |
| filingDate |
2020-06-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c183094edf2b530fd25e6c3124cd5d68
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8d515bf10871fec2419e04a141eac8db
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2c317bb40215fe681e9db83b8d352458
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_142a86ac2fe51dd7951e716c3ca4b3e4 |
| publicationDate |
2020-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2020399530-A1 |
| titleOfInvention |
Aqueous Delayed Acid System for Well Stimulation |
| abstract |
The disclosure relates to an aqueous acidizing fluid. In addition to an acid, the fluid contains an organophosphorus surfactant and/or an acid retarder. The organophosphorus surfactant may be an amino phosphonate or a phosphino carboxylate. The acid retarder comprises the combination of urea or a urea derivative and a bifunctional organic compound. Suitable bifunctional organic compounds contain at least one quaternary ammonium or phosphonium and at least one alcohol as well as salts of nitrogen containing heterocyclic rings. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11585196-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11661545-B2 |
| priorityDate |
2019-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |