| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7d9f38dad6342df09dea6b5c21b73725 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-91 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B22-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B22-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-467
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B22-064
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B28-02 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-467
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B22-08 |
| filingDate |
2006-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0296cab76562985fda318d18562d9f7e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3f39829ff3bde999941787ebe5a3649e |
| publicationDate |
2007-02-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2555690-A1 |
| titleOfInvention |
Strength retrogression preventer |
| abstract |
Cementitious slurries capable of controlling and/or preventing strength retrogression during the cementing of a formation contain a bismuth salt or derivative thereof. Bismuth trioxide is preferred. The cementitious slurry may further contain a density modifying agent and/or strength enhancer. The cementitious slurries of the invention are suitable for use over a broad temperature range of from about 45° F to about 500° F. |
| priorityDate |
2005-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |