| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9e183b88ffc72e64d1b805a946af58de |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-101
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/E21B47-017
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-104
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-107 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B47-01 |
| filingDate |
1991-02-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_53e098a6a1bf63f601d4067ec0da0653
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8b2795bdd076c61952a90558dec85d70
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e8927606090e2b6c1799ff1f5e28a76b |
| publicationDate |
1991-10-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-2242462-A |
| titleOfInvention |
Externally mounted radioactivity detector for MWD employing radial inline scintillator and photomultiplier tube |
| abstract |
Improved radioactivity well logging by mounting a scintillator 250 and photomultiplier tube 252 in a single case 262 interfacing with a hole extending through a drill collar 89 at the lower end of a drill string so that measurements can be made while drilling. Radioactive sources (when required for well logging) are mounted in cavities which open to the exterior of the drill collar. Light from the scintillator 250 is coupled directly to the aligned photomultiplier tube both of which are mounted in a case extending radially within the drill collar and sealingly engaging an electronics housing within the drill collar and the drill collar wall surrounding the hole. The scintillator is of greater diameter than the photomultiplier tube. A frustoconical light pipe connects the scintillator and the photomultiplier tube, channeling scintillation in the crystal to the photomultiplier to provide an amplified detection capability over that for a scintillator having the same diameter as the photomultiplier tube. <IMAGE> |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2415253-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2415253-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8910533-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0505261-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0505261-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6710600-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1523607-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2337546-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012141681-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2404209-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2404209-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2344127-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2344127-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7178607-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7178608-B2 |
| priorityDate |
1990-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |