| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ffb7338f959400a6a869adcec4b4572e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-101 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-10 |
| filingDate |
1978-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1980-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a97a7f38172cc4befe6ea741fb98a3ce
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9827df74efdc62304bf5198ce9d13845 |
| publicationDate |
1980-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4208580-A |
| titleOfInvention |
Lithology determination from the calcium and magnesium activation lines |
| abstract |
In the illustrative embodiments of the invention disclosed, the lithology of an earth formation traversed by a well bore is investigated by irradiating the formation with a neutron source and generating an energy spectrum of the activation gamma rays resulting therefrom. From the spectrum thus obtained, the levels of the activation gamma radiation emitted by 27 Mg and that emitted by 49 Ca are determined. The two intensity measurements are then combined, e.g. by forming a cross-plot or ratio thereof, to provide an indication of the lithology of the earth formation and, in particular, of the extent of dolomitization of the formation. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6577697-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4810876-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2004065823-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4404467-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5440118-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6927390-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5237594-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5786595-A |
| priorityDate |
1978-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |