http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3940613-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/G01V5-108 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-102 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-10 |
| filingDate | 1974-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1976-02-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6a1c52a4147a6887bb9dbd2bb853bbe5 |
| publicationDate | 1976-02-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3940613-A |
| titleOfInvention | Three frequency modulated thermal neutron lifetime log |
| abstract | Methods are disclosed for measuring simultaneously the thermal neutron lifetime of the borehole fluid and earth formations in the vicinity of a well borehole. A harmonically intensity modulated source of fast neutrons is used to irradiate the earth formations with fast neutrons at three different intensity modulation frequencies. Intensity modulated clouds of thermal neutrons at each of the three modulation frequencies are detected by a single spaced detector and the relative phase shift of the thermal neutrons with respect to the fast neutrons is determined at each of the three modulation frequencies. These measurements are then combined to determine simultaneously the thermal neutron decay time of the borehole fluid and the surrounding earth formation media. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7430479-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11675103-B2 |
| priorityDate | 1974-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.