http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108587578-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-03 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-14 |
| filingDate | 2018-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108587578-B |
| titleOfInvention | A kind of water-base drilling fluid and its preparation method and application |
| abstract | The present invention relates to petroleum drilling technology fields, disclose a kind of water-base drilling fluid and preparation method thereof, wherein, the water-base drilling fluid contains water, bentonite, xanthan gum, heat and salinity tolerance fluid loss additive, film forming filtrate reducer, potassium chloride, rigid sealing agent and calcium carbonate, and on the basis of the water of 100 parts by weight, bentonite is 2-6 parts by weight, xanthan gum is 0.1-0.4 parts by weight, heat and salinity tolerance fluid loss additive is 0.3-0.7 parts by weight, film forming filtrate reducer is 1-4 parts by weight, potassium chloride is 5-9 parts by weight, rigid sealing agent is 1-5 parts by weight, calcium carbonate is 35-65 parts by weight.When water-base drilling fluid drilling coal seam or coal slime mix layer, there is stronger closure rejection ability to guarantee wellbore stability, realize the target of safe, fast, efficient drilling well. |
| priorityDate | 2018-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.