| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a7af5ad47be8bbf6c7905acc154fd1a6 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2208-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-502
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-516
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B33-138
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B21-003 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-516
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B33-138
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-05
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B21-00 |
| filingDate |
2013-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_89224195fba5970e9b2d694b6bb4ddc0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a62e49299acc5c8a4e93d0a33b008d5c |
| publicationDate |
2015-02-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-2836565-A1 |
| titleOfInvention |
Drilling fluids with nano and granular particles and their use for wellbore strengthening |
| abstract |
There is described a drilling fluid for wellbore strengthening having nanoparticles and granular particles. In one aspect described herein, the drilling fluid is an invert emulsion based fluid. In a further aspect, the nanoparticles are iron hydroxide or calcium carbonate, and in a further aspect from about 1 to 30 nm in size. In one aspect described herein, the granular particles are graphite or calcium carbonate and in a further aspect, up to 250 μm in size. The nanoparticles and granular particles plug fractures in the wellbore to strengthen the wellbore. |
| priorityDate |
2012-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |