| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8cac4ca8509c3ca45aca9a0274628c6e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-203
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-24 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-04 |
| filingDate |
2009-10-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e1d6dbf3dc2a340e83b19142b63e969c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_756e140f93837639a81df1cd772bfa4c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b036e59eaab662907b21c4d96087c0bd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_93202fcc495418183bf60004536542de |
| publicationDate |
2011-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
MX-2011003935-A |
| titleOfInvention |
WATER PERFORATION FLUID BASED ON CHROME FREE WATER. |
| abstract |
The present invention relates to methods for maintaining rheology and reducing fluid loss from chromium-free, water-based well drilling fluids under high temperature-high pressure conditions. The method may comprise formulating the chromium-free aqueous well drilling fluid with an aqueous-based fluid, at least one chromium-free viscosifier, at least one chromium-free fluid loss control additive, at least one free dispersant chrome; and circulating the chrome-free water-based well drilling fluid in a well drilling at temperatures exceeding 148.8 ° C (300 ° F). |
| priorityDate |
2008-10-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |