http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3928763-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_90e7136bc810b844502b21de846a8a71 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-102 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-10 |
| filingDate | 1974-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1975-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ff562bdeada812f75c0fd8b50888fb7e |
| publicationDate | 1975-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3928763-A |
| titleOfInvention | Measurement of subsurface formation lithology, including shaliness, using capture gamma spectroscopy |
| abstract | Gamma ray spectra of earth formations surrounding an open or cased well borehole are obtained by exciting subsurface formation elements around the borehole with neutrons and detecting the gamma rays resulting from capture in the subsurface formation of thermalized neutrons from a capture gamma spectroscopy (C.G.S.) well log source. The macroscopic thermal neutron capture crosssection of the formations is also known or obtained, either from the C.G.S. log or other previous logs. The spectra of gamma rays obtained from the formation are analyzed to form logs of the elements which contribute significantly to the spectra. From these logs, a partial macroscopic thermal neutron capture crosssection of the elements contributing to the gamma rays of the spectrum is obtained. The partial macroscopic thermal neutron capture cross-section so obtained is then compared with the capture cross-section of the formation to obtain an indication of the shaliness of the formation. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2470241-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4055763-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4350888-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4464569-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5369578-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102590250-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4788424-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4810876-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102590250-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4239965-A |
| priorityDate | 1974-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.