| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_fd160b48bd4cc483cafd142249836250 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02E10-10 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-305
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-247
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B43-267
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/F24T10-20 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-267
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B43-247
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/F24J3-08 |
| filingDate |
1976-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1977-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f246ff753ef2d7b1a7e34243bbee9789
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_250ed31fa838d3b88ef6c20d7b3b239a |
| publicationDate |
1977-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4019577-A |
| titleOfInvention |
Thermal energy production by in situ combustion of coal |
| abstract |
This specification discloses a method of recovering thermal energy from a coal formation having a preferred vertical fracture orientation. An injection well and a production well are provided to extend into the coal formation and a vertical fracture is formed by hydraulic fracturing techniques and propagated into the coal formation to communicate with both the wells. The vertical fracture is propped in the lower portion only. A combustion-supporting gas is injected into the propped portion of the fracture and the coal is ignited. Injection of the combustion-supporting gas is continued to propagate a combustion zone along the propped portion of the fracture and hot product gases generated at the combustion zone are produced to recover the heat or thermal energy of the coal. Water may also be injected into the fracture to transport the heat resulting from the combustion of the coal to the production well for recovery. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-100351491-C
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10385257-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8596356-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2014110082-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2023313652-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4401163-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4867241-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4557328-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11525186-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4510997-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114837648-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114790880-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106304446-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114837648-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4061190-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106304446-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008073058-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10012064-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114876428-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10344204-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010251728-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5322115-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114876428-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-100347402-C
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4169506-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4718490-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10385258-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7490657-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2012103611-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4275787-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4714114-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10982520-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/IT-201900006817-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9562424-B2 |
| priorityDate |
1976-02-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |