http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112251210-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-882 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-602 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-584 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-22 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/C09K8-584 |
| filingDate | 2020-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-04-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112251210-B |
| titleOfInvention | Preparation method of surfactant for universality improvement of crude oil recovery rate |
| abstract | The invention belongs to the field of chemical oil displacement for improving the recovery ratio of crude oil, and particularly relates to a preparation method of a surfactant for generally improving the recovery ratio of crude oil, which comprises the following steps of 1) raw material pretreatment: 1.1) adding crude sodium acid into a preparation tank, then adding sodium benzenesulfonate, and stirring for 15-45 minutes to obtain a material A; 1.2) firstly adding water into a dissolving tank, then adding industrial sodium chloride, and stirring for 15-45 minutes to obtain a material B; 2) compounding: and (3) conveying the material B into a compounding tank, stirring, conveying the material A into the compounding tank, and stirring for 15-45 minutes. The universal surfactant for improving the recovery ratio of crude oil consists of the following components: 18-30 wt.% of sodium crude acid, 12-20 wt.% of sodium benzenesulfonate, 20-28 wt.% of industrial sodium chloride and the balance of water, wherein the content of each component is based on the total weight of the surfactant for generally improving the recovery ratio of crude oil. The surfactant for improving the crude oil recovery efficiency in universality can reduce the oil-water interfacial tension to 1.0 multiplied by 10 ‑3 The compound oil displacement system formed by compounding the compound oil displacement system with alkali and/or polyacrylamide has the advantages of effectively improving the oil displacement efficiency and further improving the crude oil recovery ratio by more than 25 percent compared with water drive. |
| priorityDate | 2020-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.