| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_21f94099cb7c4eac0ba773c12ef8b59c |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-125 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V13-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V-
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B49-00 |
| filingDate |
2005-02-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7faebb2522f775dd6aab15c8c2ecad40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5909e37c4600b195c92505d814a22ca7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ee2cbd243a3e514f340329bd9ec999c2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a9796f2b513a638b0b5e822e5cead07 |
| publicationDate |
2005-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2842939-A1 |
| titleOfInvention |
Spectral gamma ray logging-while-drilling system |
| abstract |
A method for determining concentrations of naturally occurring radioactive elements in earth formation by analysis of gamma ray energy spectra measured by at least one gamma ray detector while the borehole is being drilled. Gain of the gamma ray detector is controlled automatically through analysis of the spectra. The one or more gamma ray detectors are disposed at the periphery of the downhole instrumentation to maximize sensitivity. Elemental concentrations of naturally occurring radioactive elements such as potassium, uranium and thorium are measured either as a function of depth in the borehole, or as a function of aximuthal sectors around the borehole wall, or as a function of both depth and azimuthal sectors. |
| priorityDate |
2004-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |