http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110699052-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F212-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-035 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G81-024 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08H6-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-035 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G81-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08H7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F212-08 |
| filingDate | 2019-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-10-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110699052-B |
| titleOfInvention | Temperature-resistant salt-resistant fluid loss agent for drilling fluid and preparation method thereof |
| abstract | The invention discloses a temperature-resistant and salt-resistant fluid loss agent for drilling fluid and a preparation method thereof, wherein the fluid loss agent is prepared from the following raw materials in parts by weight: 80-100 parts of sodium carboxymethylcellulose, 30-50 parts of natural asphalt, 40-60 parts of sulfonated asphalt, 15-30 parts of sulfonated nitro humic acid, 50-70 parts of sulfonated phenolic resin, 20-40 parts of aqueous acrylic resin, 6-10 parts of initiator and 10-40 parts of water, wherein the preparation method comprises the following steps: stirring 1/2 initiator, water, natural asphalt and sulfonated phenolic resin for 1.5-2h at the temperature of 100 ℃ and 120 ℃, then adding sulfonated asphalt and sulfonated nitro humic acid, stirring for 20-40min, then adjusting the temperature to 60-70 ℃, adding the rest 1/2 initiator and water-based acrylic resin, stirring for 2-2.5h, adjusting the temperature to 45-55 ℃, adding sodium carboxymethyl cellulose, stirring for 3-4h, drying and crushing to obtain the temperature-resistant and salt-resistant fluid loss additive for drilling fluid. The drilling fluid has the advantages of effectively reducing the water loss of the drilling fluid and resisting temperature and salt. |
| priorityDate | 2019-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 54.