http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112239653-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-08 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-03 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-03 |
| filingDate | 2019-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112239653-B |
| titleOfInvention | Fluid loss additive for drilling fluid based on nanofiber-hydrophobic starch compound and preparation method thereof |
| abstract | The invention relates to a fluid loss additive for drilling fluid based on a nanofiber-hydrophobic starch compound, which comprises the following components in percentage by mass: 33-41% of cationic nanocellulose, 4.5-6.0% of dispersing agent, 34-43% of hydrophobic modified starch, 11-13% of nano silicon dioxide and 6.5-7.1% of nano graphite. The sugarcane residue is dried, crushed, purified, dialyzed and cationized, and then is combined with the hydrophobic modified starch to form a nanofiber-hydrophobic modified starch compound, and simultaneously, the nanofiber-hydrophobic modified starch compound is assisted with the nano silicon dioxide to enhance the temperature resistance and the capacity of filling nano pores, so that the fluid loss reducing effect of the composite is improved. The treating agent has strong filtration loss reducing and temperature resisting capabilities, is non-toxic and has no adverse effect on the environment. |
| priorityDate | 2019-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 59.