| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ffb7338f959400a6a869adcec4b4572e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-107 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-10 |
| filingDate |
1968-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1971-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ede23fbd4e874bc84d070925281044c2 |
| publicationDate |
1971-03-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3567936-A |
| titleOfInvention |
Multiple neutron detector borehole logging tool |
| abstract |
An earth formation porosity logging tool in accordance with an illustrative embodiment of the invention comprises a neutron source and four neutron detectors spaced at different distances from the source for transport through a borehole. Signals are obtained that correspond to the ratios of the counts registered by the two short-spaced detectors and the two long-spaced detectors. The effect of the borehole characteristics on the formation porosity measurement is compensated by directly contrasting these ratio signals with each other. A second illustrative embodiment of the invention using only three neutron detectors also is shown and described. |
| isCitedBy |
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| priorityDate |
1968-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |