This paper discusses a new downhole logging instrument that measures three-phase flow in horizontal and highly deviated wells. The focus is on the instrument design features, and the measurement techniques that produce the three-phase holdup and velocity measurements. Signals from a two dimensional array of capacitive sensors are measured, and subsequent processing determines the volume fraction and velocity of each component of the borehole flow. The design incorporates an array of capacitive sensors that span the wellbore. Since two orthogonal electrical signals are used to excite local fluid elements, it is possible to determine the fluid capacitance or the volume fraction of conductive fluid in the vicinity of each sensor. Holdups are calculated from these sensor outputs. Velocities are calculated by correlating outputs from adjacent sensors. Measurement concepts and instrument characterization are demonstrated with flow loop data. [S0195-0738(00)00802-5]
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June 2000
Technical Papers
Downhole Instrumentation for the Measurement of Three-Phase Volume Fractions and Phase Velocities in Horizontal Wells
J. O. Maxit,
J. O. Maxit
Baker Atlas, 2001 Rankin Road, Houston, TX 77073-5100
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P. W. Reittinger,
P. W. Reittinger
Baker Atlas, 2001 Rankin Road, Houston, TX 77073-5100
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J. Wang,
J. Wang
Baker Atlas, 2001 Rankin Road, Houston, TX 77073-5100
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R. J. Kostelnicek
R. J. Kostelnicek
SBO, 609 Bayou Crest Drive, Dickinson, TX 77539
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J. O. Maxit
Baker Atlas, 2001 Rankin Road, Houston, TX 77073-5100
P. W. Reittinger
Baker Atlas, 2001 Rankin Road, Houston, TX 77073-5100
J. Wang
Baker Atlas, 2001 Rankin Road, Houston, TX 77073-5100
R. J. Kostelnicek
SBO, 609 Bayou Crest Drive, Dickinson, TX 77539
Contributed by the Petroleum Division and presented at the ETCE/OMAE2000, New Orleans, Louisiana, February 14–17, 2000, of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the Petroleum Division, October 28, 1999; revised manuscript received March 31, 2000. Associate Technical Editor: W. P. Jepson.
J. Energy Resour. Technol. Jun 2000, 122(2): 56-60 (5 pages)
Published Online: March 31, 2000
Article history
Received:
October 28, 1999
Revised:
March 31, 2000
Citation
Maxit , J. O., Reittinger , P. W., Wang, J., and Kostelnicek, R. J. (March 31, 2000). "Downhole Instrumentation for the Measurement of Three-Phase Volume Fractions and Phase Velocities in Horizontal Wells ." ASME. J. Energy Resour. Technol. June 2000; 122(2): 56–60. https://doi.org/10.1115/1.483162
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