| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03ffb01f4e91311ebc8f3c12a4b5570a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B47-12 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B47-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B41-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B34-066
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B41-0085
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B17-003 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B47-12 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B41-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B17-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B34-06 |
| filingDate |
2016-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2021-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e3ba0d7de4bfaf09b3ab19a187109433
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_88d7078d2083602c7a6fd2ae80050f1c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_467e7be0d31b7fbf896ea784b1ae52c6 |
| publicationDate |
2021-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-11072999-B2 |
| titleOfInvention |
Downhole energy harvesting |
| abstract |
Downhole electrical energy harvesting and communication in systems for well installations having metallic structure carrying electric current, for example CP current. In some instances there is a harvesting module ( 4 ) electrically connected to the metallic structure ( 2 ) at a first location and to a second location spaced from the first location, the first and second locations being chosen such that, in use, there is a potential difference therebetween due to the electric current flowing in the structure ( 2 ); and the harvesting module ( 4 ) being arranged to harvest electrical energy from the electric current. In addition or alternatively, there may be communication apparatus ( 4, 5, 6 ) for communication by modulation of the current, for example CP current, in the metallic structure ( 2 ). |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11506027-B1 |
| priorityDate |
2016-12-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |