Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4ee2c8645e56beaf60f158116aed789c http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ffb7338f959400a6a869adcec4b4572e http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2c8abd22b36e9c94090f9889ecf27cb5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_aa167897a816e0e598235c706de2c370 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_04a25ddcc405fe1eb2c9f5459a07a67b http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_137ad4f406af5b0333fbe8694f2ed4a9 |
classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V3-104 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V3-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V3-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V3-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01V3-18 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V3-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/E21B47-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01V3-18 |
filingDate |
2015-03-26^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dca95a9558d22ac453ea1430668a6510 |
publicationDate |
2015-10-08^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
WO-2015153280-A1 |
titleOfInvention |
Gain compensated directional propagation measurements |
abstract |
A method for obtaining gain compensated electromagnetic logging while drilling propagation measurements includes rotating an electromagnetic logging while drilling tool in a subterranean wellbore. The tool includes a plurality of transmitter antennas and a plurality of receiver antennas symmetrically spaced along a logging while drilling tool body with the transmitter antennas including at least one axial transmitter antenna and at least one transverse transmitter antenna and the receiver antennas including at least one axial receiver antenna and at least one transverse receiver antenna. Electromagnetic voltage measurements are acquired from the receiver antennas while rotating. The acquired voltage measurements are processed to compute harmonic voltage coefficients. Ratios of selected ones of the harmonic voltage coefficients are in turn processed to compute gain compensated quantities including symmetrized and anti-symmetrized quantities. |
isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108291978-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108291978-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9784880-B2 |
priorityDate |
2014-03-29^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |