http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10317568-B2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ffb7338f959400a6a869adcec4b4572e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-101 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V13-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V13-00 |
| filingDate | 2016-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_55be09c1f46c94ebd675a63adf67addd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7f27c1dcabeaea0627f9898a018f3259 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac677e11f8894bac3a5b912439fd2f49 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5abeaf331b2bf086757c2f2baededa8a |
| publicationDate | 2019-06-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-10317568-B2 |
| titleOfInvention | Method and system for correcting a natural gamma-ray measurement performed in a wellbore |
| abstract | The disclosure relates to a method for correcting a downhole natural gamma-ray measurement performed in a wellbore. A gamma-ray measurement including at least a gamma-ray count rate is obtained by a gamma-ray detector disposed in a bottom hole assembly having a mud channel inside of the assembly, such that mud flows downwards in the mud channel and upwards outside of the assembly and a neutron source situated above the gamma-ray detector and activating the mud. The method includes:n Determining from the gamma-ray measurement an interval count rate corresponding to a count rate of gamma-rays having an energy within a predetermined correction interval; Computing an outside and an inside calibration ratio (ratio of a gamma ray count rate in the correction interval to a gamma-ray count rate outside of the correction interval) representative of gamma-rays generated by an activation of mud flowing respectively outside of the assembly and inside of the assembly, Based on the outside calibration ratio and the interval count rate, determining a first correction count rate, Based on at least the inside and the outside calibration ratios, determining a second correction count rate, Subtracting from the total count rate the first and second correction count rates in order to get a natural gamma-ray measurement corrected for mud activation. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11675103-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2021231827-A1 |
| priorityDate | 2016-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.