| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_be2258efa1dd0212d91e87b0487f4ede |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2103-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W30-91 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B28-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-473
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-487
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-46 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-46
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-473
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B28-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-487 |
| filingDate |
2004-04-15^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_df26f14bb30ec56b6f6c8ca059c3dc7b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_81c552c60e7c78370e3dfa05b24c6ebb
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3e26e47e44d271dfcb8a0186f9f06a5c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8ffd0e4dafcfa45f1e23a49bc3ef722b |
| publicationDate |
2006-03-15^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-1633952-A1 |
| titleOfInvention |
Cement compositions with improved fluid loss characteristics and methods of cementing in subterranean formations |
| abstract |
The present invention provides cement compositions comprising an improved fluid loss control additive, and methods for cementing in a subterranean formation using such cement compositions. The cement compositions comprise a hydraulic cement, water, and a fluid loss control additive comprising at least two polymers connected by a pH-sensitive crosslink. Optionally, other ingredients may be included in the compositions. |
| priorityDate |
2003-06-13^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |