| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d9731233d8160d4f79c558937e912555 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-102
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-105
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V13-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B47-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V13-00 |
| filingDate |
2018-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e2b1d7269f49ecc02ba010bf31cb8d6b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8784a2a83161b39508da76a4fc744c2c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_65a80c6afc5121815a81b0816be294fd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_671a8aebd13e36af95a0bc8bc53a3192
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fe676e0e8653ee4bb637e9e780a56360
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_46413c639126565a4448b83fc38c1416
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fa203a8f6f7d0d19ac13530c42d8113f |
| publicationDate |
2018-11-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
WO-2018213733-A1 |
| titleOfInvention |
Gamma calibration |
| abstract |
Estimating parameters of interest of a formation, including density, porosity, and fluid saturation. Methods relate to gamma ray energy spectra calibration for a radiation detector including generating a calibration radiation spectrum using measurements of radiation with the detector in a time interval wherein the radiation comprises predominantly gamma rays emitted by decay of radionuclides produced by neutron activation reactions resulting from neutron irradiation, the time interval following a prior time interval corresponding to thermal neutrons produced from the irradiation; making at least one other radiation measurement with the detector outside the time interval; and producing a calibrated radiation measurement from the at least one other radiation measurement using the calibration radiation spectrum. The measurements may be taken in the time interval by conveying the radiation detector in the borehole at high speed and using a background gate of the detector. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2020226766-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10816695-B1 |
| priorityDate |
2017-05-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |