http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3868505-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ffb7338f959400a6a869adcec4b4572e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-102 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-10 |
| filingDate | 1973-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1975-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_792d4b78a91e75058b1e9fd086158b22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7891c98fa9580084287218a3286e0bd3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3c1d8988a6dbbdcdceea5faf2c86359c |
| publicationDate | 1975-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3868505-A |
| titleOfInvention | Method and apparatus for investigating the quality of well logging data |
| abstract | Apparatus and methods are disclosed for investigating the quality of well logging data derived from a well tool of the type which repetitively irradiates an earth formation with pulses of neutrons, generates signals representative of the resulting neutron population in the formation between neutron pulses, derives a downhole measurement of a characteristic of the formation in response to the neutron population signals, and transmits to the earth''s surface signals representative of the formation characteristic measurement and of the generated neutron population signals. A representation of the quality of the downhole formation characteristic measurement and of signal transmission to the surface is obtained, either at the well site or remotely, from the neutron population signals received at the surface. In the illustrative embodiments described, the downhole measurement of the formation characteristic is made by comparing the background-corrected counting rates from two measurement intervals between neutron pulses and adjusting the times of occurrence and durations of the intervals until the two counting rates are in a predetermined relationship to each other. A like comparison of counting rates is formed at the surface from the transmitted neutron population signals, and deviations of this surface comparison from the predetermined relationship established between the downhole counting rates affords information as to the quality of signal transmission to the surface and of the accuracy of the downhole formation characteristic measurement. If desired, a separate measurement of the formation characteristic may be made at the surface and the quality representation obtained by comparing the downhole measurement and the surface measurement. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4709234-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4866607-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4668863-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4600838-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11248463-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5337234-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4697078-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4002903-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5153832-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4645926-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4471435-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4656354-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2010187412-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4663628-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4665398-A |
| priorityDate | 1973-10-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID6857639 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419578831 |
Total number of triples: 31.