http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3784822-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/G01V5-107 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-10 |
| filingDate | 1971-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1974-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7e7467acdf5a57653eb7a4d26909ce8e |
| publicationDate | 1974-01-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-3784822-A |
| titleOfInvention | Radioactivity well logging methods and apparatus |
| abstract | An illustrative embodiment of the invention compensates neutron measurements of the porosity of an earth formation for sudden changes in borehole diameter. Typically, a sidewall porosity logging tool for transport through a borehole is equipped with two neutron detectors spaced at different distances from the neutron source. In order to improve the vertical resolution of the tool, a circuit stores the signal from the longspaced detector until the shorter spaced detector has traversed a distance along the borehole wall that is equal to the separation between the two detectors. This memory feature adjusts the porosity signals to a common zone of observation. These apparent porosity signals then are combined with borehole caliper signals to compensate for the effect of changes in borehole diameter. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2348487-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2348487-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9341735-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3869607-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6285026-B1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5515336-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5357797-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5459697-A |
| priorityDate | 1971-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.