| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_732c99a2ad9f82a796b7328cf5c8e29c |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B21-062
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B21-065
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F2800-20 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B37-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08F220-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K8-524 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B37-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F220-56
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K8-12 |
| filingDate |
2018-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_396ddebe0e59c7324d70dc4b13028d43
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2f369c56dc83420b73eb6d274e1f5f9c |
| publicationDate |
2019-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-2019169480-A1 |
| titleOfInvention |
Aqueous drilling fluid for reducing bitumen accretion |
| abstract |
Some embodiments of the present disclosure relate to drilling fluids that comprise an aqueous solvent and an ampholytic semi-hydrophobic polymer that is readily hydratable under field mixing conditions. The ampholytic semi-hydrophobic polymer comprises semi-hydrophobic monomer units comprising a C1-C7 hydrocarbyl substituent, a hydrogen substituent, or a combination thereof. Some embodiments of the present disclosure relate to use of a drilling fluid as defined herein to reduce bitumen accretion to a wellbore drilling component. Some embodiments of the present disclosure relate to methods for reducing bitumen accretion to a wellbore drilling component, the method comprising introducing a drilling fluid as defined herein into a wellbore containing the wellbore drilling component. |
| priorityDate |
2017-12-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |