阵列式持气率计和反距离加权算法在水平井气一水两相流持气率评价与成像中的应用

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中图分类号：P631 文献标识码：A DOI：10.13810/j.cnki.issn.1000-7210.20240278

Abstract： In gas-water two-phase flow，phase stratification and the non-uniform distribution of gas and water within the welbore often lead to significant measurement errors when using conventional instruments under varying flow regimes and phase separation conditions.To overcome these limitations，a modular combination of multiphase flow sensors，such as the Capacitance Array Tool （CAT），Resistance Array Tool（RAT），Spinner Array Tool（SAT），and Gas Array Tool（GAT），can be flexibly configured to enhance the adaptabilityand efficiency of wellogging systems. In particular，the GAT employs optical sensors to perform repeated measurements under various flow conditions，effectively improving measurement robustness and resolution. This study evaluates the gas holdup measurement performance ofGAT and RAT under diferent flow rates and water cut conditions. An inverse distance weighting （IDW） algorithm is applied to interpolate the measured gas holdup distribution for visualization. Experimental results demonstrate that GAT outperforms RAT regarding imaging quality，measurement accuracy，and adaptability under low-to-moderate water cut and high flow rate conditions， providing valuable insights for interpreting gas-water two-phase production profiles in horizontal wells. Keywords： production logging，horizontal well，optical sensor，gas array tool，gas holdup

郭海敏，吴玉燕：阵列式持气率计和反距离加权算法在水平井气一水两相流持气率评价与成像中的应用[J].

石油地球物理勘探，2025，60（4）：958-965.

GUO Haimin，WU Yuyan. Application of gas array tool and inverse distance weighting algorithm in evaluation and imaging of gas holdup in gas-water two-phase flow in horizontal well[J]. Oil Geophysical Prospecting， 2025，60（4）：958-965.

0 引言

为提高产量和提高储层采收率，水平井在油气开采中被广泛应用。（剩余11437字）