http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110628398-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-24 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-24 |
| filingDate | 2019-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110628398-B |
| titleOfInvention | Water-based drilling fluid for shale gas well and production method thereof |
| abstract | The invention relates to a water-based drilling fluid for shale gas wells and a production method thereof, which sequentially include the following steps: (1) Prepare raw materials, 1000 parts of water; 45-50 parts of sodium bentonite; 500 parts of water-soluble inhibitor and weighting agent II; 100 parts of weight inhibitor type III; 15 to 20 parts of non-fluorescent white asphalt for anti-slump inhibitor; 10 to 20 parts of solid polyalcohol; 10 to 20 parts of fluid loss reducer; 0.5 to 1 part of polyamine inhibitor; ultrafine carbonic acid 20-30 parts of calcium; 10-25 parts of extreme pressure lubricant; 0.5-1 part of coating inhibitor; (2) Mix sodium bentonite with water and stir, and cure at room temperature for at least 24 hours; (3) Add water-soluble first under stirring Inhibition and weighting agent type II and type III, then add anti-slump inhibitor non-fluorescent white asphalt and solid polyalcohol, then add fluid loss reducer and polyamine inhibitor, then add ultrafine calcium carbonate and extreme pressure lubricant, and finally add Inhibitor was coated and pH and density adjusted. The drilling fluid has high plugging properties, strong inhibition and excellent lubricity, which can meet the safe drilling requirements of shale gas horizontal wells. |
| priorityDate | 2019-10-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.