http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1051561-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_802cb425a297a0766bc7d8cdc2f03898 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-102 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-108 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-10 |
| filingDate | 1976-04-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1979-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_27e156c07d1574974ee15612d45b674a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6207faf29c51b5043a256fe849e708c1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8bd4b457a73257fcea8cd4c7f916547f |
| publicationDate | 1979-03-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1051561-A |
| titleOfInvention | Three frequency modulated combination thermal neutron lifetime log and porosity log |
| abstract | THREE FREQUENCY MODULATED COMBINATION THERMAL NEUTRON LIFETIME LOG AND POROSITY LOG (D#73,327-F) ABSTRACT OF THE DISCLOSURE Methods are disclosed for measuring simultaneously the thermal neutron lifetime of the borehole fluid and earth formations in the vicinity of a well borehole, together with the formation porosity. A harmonically intensity modulated source of fast neutrons is used to irradiate the earth formations with fast neutrons at three different intensity modulation frequency. Intensity modulated clouds of thermal neutrons at each of the three modulation frequencies are detected by dual spaced detectors and the relative phase shift of the thermal neutrons with respect to the fast neutrons is determined at each of the three modulation frequencies at each detector. These measurements are then combined to determine simultaneously the thermal neutron decay time of the borehole fluid, the thermal neutron decay time of surrounding earth formation media and the porosity of the formation media. -I- |
| priorityDate | 1975-05-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.