| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ffb7338f959400a6a869adcec4b4572e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-108 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-10 |
| filingDate |
1969-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1971-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_44bda5eebf7485dfddbe411c6110dd43 |
| publicationDate |
1971-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3621255-A |
| titleOfInvention |
Two detector pulse neutron logging porosity technique |
| abstract |
An illustrative embodiment of the invention discloses a technique for reducing the influence of borehole characteristics on earth formation porosity measurements. Measurements of this sort are accomplished with a borehole logging tool that comprises two neutron detectors spaced at different distances from a pulsed neutron generator. The thermal neutron decay time of the shortspaced detector identifies that portion of the time-dependent population that is most indicative of the formation porosity. Both detectors then register the portion of the neutron distribution so identified to produce two signals from which a ratio is computed that is related to the porosity of the formation. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2007274426-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8080781-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3818225-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4926044-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2228227-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5789752-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4760252-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010230585-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3833809-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2005135534-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7142625-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005047852-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2005047852-A3 |
| priorityDate |
1969-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |