http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109401736-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G8-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-035 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-035 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G8-28 |
| filingDate | 2014-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-06-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-06-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109401736-B |
| titleOfInvention | Ultra-temperature drilling fluid filtrate reducer |
| abstract | The invention relates to a filtrate reducer for ultrahigh-temperature drilling fluid, in particular to a high-temperature high-pressure filtrate reducer for ultrahigh-temperature brine drilling fluid, which belongs to the technical field of synthesis and preparation of water-soluble high polymer materials and is prepared by reacting sulfomethylated phenolic resin with formaldehyde, hydroxyalkyl aldehyde, aliphatic ketone or alicyclic ketone, sulfite and pyrosulfite for a certain time at high temperature and high pressure. The invention can effectively control the high-temperature and high-pressure filtration loss and rheological property of the brine drilling fluid, has good compatibility with LP527, MP488, SMC and the like, has good high-temperature stability, does not have thickening phenomenon after aging at 220 ℃, can effectively control the high-temperature and high-pressure filtration loss of the drilling fluid to be less than 16mL, and has the density of 2.32g/cm 3 Still has better rheological property. The preparation process is easy to control, and the product can meet the requirement of controlling the high-temperature and high-pressure filtration loss of the ultra-high-temperature drilling fluid at 220 ℃. |
| priorityDate | 2014-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.