| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3fec0b5d7237f32caf545eabca5e2589 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2103-0036
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2111-1031
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2103-0031 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-473
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B28-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-487 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B103-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B28-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-487 |
| filingDate |
2018-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2019-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b965a1d20908954013aa38a6cbb58035
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b26046938d94273ea5267aebdd160a12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_37a2a4152be39c1cdc3a8cbb6c9b1bfe
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_12e0610b6e3f0c89a4740207482ca428 |
| publicationDate |
2019-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-10450494-B2 |
| titleOfInvention |
Cement slurries for well bores |
| abstract |
Cement slurries are provided for use in cementing oil and gas wells. The cement slurry comprises API Class C or Class H Portland cement and a pozzolan selected from the group consisting of pumice and mixtures of pumice and fly ash. Pumice is present in the mixtures in amounts at least about 40 wt % of the pozzolan. The weight ratio of the pozzolan to the cement is from about 35:65 to about 70:30. The novel cement slurries preferably will not comprise any additional lime, including hydrated lime, or other activators. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11639463-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11427750-B2 |
| priorityDate |
2018-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |