http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106479456-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-03 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-03 |
| filingDate | 2016-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106479456-B |
| titleOfInvention | A kind of drilling fluid polynary vinyl polymer emulsion film forming sealing agent and preparation method thereof |
| abstract | A kind of preparation method that drilling fluid is blocked with polynary vinyl polymer emulsion film forming, stocks up each raw material according to component proportion；Formula ratio solvent 4/5, emulsifier are sequentially added in No. 1 reaction kettle, is warming up to 50 ~ 70 DEG C, stirs 20 ~ 30min；Styrene, maleic anhydride, acrylate, initiator, molecular weight regulator are sequentially added, increases temperature to 70 ~ 80 DEG C, reaction starts timing, stops heating, cooling after 1h；Formula ratio solvent 1/5, stabilizer, oxygen scavenger, defoaming agent, modified nano calcium carbonate are sequentially added in No. 2 reaction kettles, 30 ~ 40min is stirred at room temperature；The obtained mixture of step d is slowly added in No. 1 reaction kettle, 2 ~ 3h is reacted at 40 ~ 50 DEG C, is obtained with polynary vinyl polymer emulsion film forming sealing agent.Peplomer is cemented to equipped with micron order is deformable, is improved drilling fluid and is blocked caving-preventing ability, improvement of mud cake reduces filter loss, and compatibility is good, and 130 DEG C of temperature resistance. |
| priorityDate | 2016-08-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.