水平井全井眼持气率计(GHT)实验响应特性

An Experimental Response Characteristic of Fullbore Gas-holdup Tool in Horizontal Wells

分析了水平井中流型对持气率计(GHT)测量的影响,研究了不同气液配比和不同含水率情况下持气率计在气液两相、三相流动状态下的测井响应特征。研究结果表明,对于水平井流体流动,GHT伽马计数率随液量的增加而增大、随气量的增加而减小、随含水率增加略有增大;水平井气水或油气两相流动状态下GHT伽马计数率与液量呈近似线性变化关系;低气量的计数率值受液量变化的影响较高,气量明显;水平井三相流动状态下保持气量和液量均不变,GHT伽马计数率随含水率增加而增大,气量越少液量越大,含水率变化对计数率影响越大。研究结果可为水平井气井生产测井解释提供参考依据。

Briefly analyzed are the influences of flow regimes on GHT（Gas-Holdup Tool）.Studied are the characters of GHT logging response at different gas-liquid ratio and various water ratio for gas-liquid two-phase and oil-gas-water three-phase in horizontal wells.Further more,these results indicate that GHT count rates increase with liquid quantity increasing and decrease with liquid quantity increasing,and increase slightly with water ratio increasing.At gas-water or oil-gas two-phase flow in the horizontal wells,the GHT count rate and liquid quantity have approximate linear relationship.The GHT count rate at lower gas quantity is affected by liquid quantity changes,so the gas quantity is obvious.The gas quantity and liquid quantity don＇t change at three-phase flow in the horizontal wells,and the GHT count rate increases with water holdup rate increasing,the gas quantity and liquid quantity are inversely proportional,the water holdup changes have great influence on the count rate.The obtained results may provide interpretation reference standard for horizontal gas-liquid well production logging.