| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_439354bb30a28638d872f3f887116b2e |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V5-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B47-111
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B47-005
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/E21B47-11 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B47-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V5-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B47-00 |
| filingDate |
1971-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1973-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7856e84daa28bd69dcd50b3bf34f8aae |
| publicationDate |
1973-01-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-3710114-A |
| titleOfInvention |
Method and apparatus for determining communication of a perforated zone with a second zone |
| abstract |
Method for locating the presence of passageways formed longitudinally of a borehole which communicates a production zone with a second zone, by placing isotopes adjacent the well casing at spaced apart locations above and below the perforated zone, and by placing spaced apart second isotopes adjacent the borehole annulus above and below the perforated zone of the borehole. The first spaced apart isotopes have a half life or decay rate substantially different from the second isotopes, and accordingly, translocation of either of the isotopes may be traced with radiation measuring apparatus. The apparatus includes means for affixing one isotope adjacent the casing, and further includes means for holding the remaining isotope adjacent the borehole wall, so that each of the different isotopes are horizontally spaced apart by the cement which attaches the casing to the borehole wall. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10344204-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10385257-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107390290-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-3848124-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10280736-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107390290-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10982520-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10385258-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10012064-B2 |
| priorityDate |
1971-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |