Downhole Instrumentation for the Measurement of Three-Phase Volume Fractions and Phase Velocities in Horizontal Wells-Reference-Cited by-同舟云学术

Downhole Instrumentation for the Measurement of Three-Phase Volume Fractions and Phase Velocities in Horizontal Wells

Published:2000-03-31 Issue:2 Volume:122 Page:56-60
ISSN:0195-0738
Container-title:Journal of Energy Resources Technology
language:en
Short-container-title:

Author:

Maxit J. O.¹,Reittinger P. W.¹,Wang J.¹,Kostelnicek R. J.²

Affiliation:

1. Baker Atlas, 2001 Rankin Road, Houston, TX 77073-5100

2. SBO, 609 Bayou Crest Drive, Dickinson, TX 77539

Abstract

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]

Publisher

ASME International

Subject

Geochemistry and Petrology,Mechanical Engineering,Energy Engineering and Power Technology,Fuel Technology,Renewable Energy, Sustainability and the Environment

Link

http://asmedigitalcollection.asme.org/energyresources/article-pdf/122/2/56/5594941/56_1.pdf

Reference8 articles.

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3. Jandrasits, W. G., and Kikta, T. J., Inventors, 1998, “Method and Apparatus for Probing Relative Volume Fractions,” U.S. Patent No. 5,729,123, U.S. Dept. of Energy.

4. van der Spek, A., and Thomas, A., 1998, “Neural Net Identification of Flow Regime using Band Spectra of Flow Generated Sound,” SPE European Petroleum Conference, The Hague, The Netherlands, Oct. 20–22.

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