| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b3f3ab86b2ee9a944f82fd2740a39577
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dc05229904be2987713acc8b41db7cd3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7b1962bdeafe58e2f312c308fe511c31 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-035
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-528 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-528
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-035 |
| filingDate |
2021-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7597ba7d1bb4892f93db92be8b4ce11a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_92f7b97dc478459daa08035e0b2b4e84
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_371fcce85caf37abf499e7881a97bac8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac02734cc4bda9a3ad5f1e3963502439
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_554ee5a57b70325c3d1a48e514671b96
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9f7773dc6290a87f13e0e6058874bac6 |
| publicationDate |
2021-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2021174096-A1 |
| titleOfInvention |
Iron sulfide inhibitor suitable for squeeze application |
| abstract |
A polymeric scale inhibitor composition and a method for inhibiting metal sulfide scale formation in a well are provided. The composition includes 80 - 82 mol% of a first monomeric unit, where the first monomeric unit is 2-acrylamido-2-methylpropane sulfonic acid (AMPS). The composition also includes 2 - 18 mol% of a second monomeric unit selected from N- vinyl formamide, N- vinyl pyrrolidone, and diallyl dimethyl ammonium chloride. The composition further includes 2 - 18 mol% of a third monomeric unit selected from acrylic acid, methacrylic acid, esters of acrylic acid or methacrylic acid with an alcohol having 1 to 4 carbon atoms, and carboxyethyl acrylate. The polymeric scale inhibitors show superior adsorption characteristics on rocks and their subsequent release behavior allows for scale inhibition over extended time periods respectively at a significant volume of coreflood fluids. They are especially suited for downhole application via field scale squeeze treatments. |
| priorityDate |
2020-02-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |