Circumferential conductivity probe sensor and system for dynamic full water value measurement in horizontal wells

Abstract

The invention relates to the technical field of oil fields and oil wells, in particular to a circumferential conducting probe sensor and a system for dynamic all-water-value measurement of a horizontal well. The circumferential conducting probe sensor comprises a cylindrical insulator support and twelve probe-type electrodes fixed on the inner wall of the insulator support, wherein the twelve probe-type electrodes comprise six exciting electrodes and six measuring electrodes; the six exciting electrodes are circumferentially and uniformly distributed at intervals on the same cross section in the upstream axial direction of the inner wall of the support; the six measuring electrodes are circumferentially and uniformly distributed at intervals on the same cross section in the downstream axial direction of the inner wall of the support; the six exciting electrodes and the six measuring electrodes are arranged in parallel in a one-to-one corresponding manner, so as to form six groups of dynamic all-water-value measuring sensors. According to the circumferential conducting probe sensor and the system for dynamic all-water-value measurement of the horizontal well, provided by the invention, the combination of the circumferential conducting probe sensor and a drive circuit system is adopted, so that response values of the six groups of dynamic all-water-value measuring sensors can be measured in sequence in a time-sharing manner, the dynamic all-water-values of the horizontal well under the oil-water stratified flow condition can be effectively obtained.

Description

technical field [0001] The invention relates to the field of oil well technology, in particular to a circumferential conductivity probe sensor and system for measuring the dynamic full water value of a horizontal well. Background technique [0002] With the rapid expansion of the application scale of horizontal well technology, in the process of production and development of horizontal wells, once local water flooding occurs, the water cut of the whole well will rise sharply, seriously affecting the development effect, and even leading to the abandonment of oil wells. Therefore, water cut is one of the important parameters of multiphase flow detection in oilfield logging, and its accurate measurement is an urgent need for today's oilfield production. In the initial stage of oilfield development, the method of measuring water holdup by coaxial overcurrent capacitive sensor was often used and achieved certain results. With the continuous development of oilfields, most oil wel...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a circumferential conductivity probe sensor and system for measuring the dynamic full water value of horizontal wells, so as to overcome the inability to realize the sampling and calibration of the full water value in the prior art, so that the conductivity type water cut Gauge has not been able to apply to defects in horizontal wells

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