http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104974725-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F4-40 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F222-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-487 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-06 |
| filingDate | 2015-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-11-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104974725-B |
| titleOfInvention | A fluid loss reducer suitable for shale gas cementing and preparation method thereof |
| abstract | The invention discloses a fluid loss reducer suitable for shale gas well cementing and a preparation method thereof. The comonomers of the fluid loss reducer are acrylic acid (AA), acrylamide (AM), 2-acrylamide-2-a Alkyl propane sulfonic acid (AMPS), N,N-methylenebisacrylamide (NMBA), its preparation method has the advantages of temperature resistance and salt resistance of polymers generated by traditional polymerization methods, and the effect of fluid loss reducer is good, and can be used in In 160°C high temperature and 18% brine, the water loss of API is controlled within 50ml. The rapid preparation method has fast reaction speed and low energy consumption, and the product is a porous solid, which is convenient for pulverization and saves production time and transportation cost. The fluid loss reducer is used to reduce the water loss of cement slurry during the shale gas cementing process, and can also be used in the cementing of oil and natural gas wells. |
| priorityDate | 2015-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.