新型油井含水率测量仪的研制

由于水、油介电特性差异较大，导致电磁波在不同含水率的油水混合介质中传播时的相位系数有很大不同。新型含水率测量仪器是利用同轴线作传感器，油水混合介质在同轴线内流过，并构成传播电磁波的载体，通过测量同轴线两端电磁波在同轴线内油水混合介质中传播的相位系数，来得到油水混合介质的含水率。该仪器能够实现油井含水率的连续测量，室内试验和初步现场试验证明该方法能够解决高含水油田油井含水率很难测准这一难题。   Development of New Water Cut Tool in Oil Well
Wang Jinqi，Qiang Xifu
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(Harbin Institute of Technology，Harbin 150001，China)
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Abstract: There is so much a different dielectric property between oil and water that the phase constants are quite different when electromagnetic wave travels in them. The new water cut tool is that the coaxial transmission line can be taken as the sensor and oil／water mixture flow in coaxial line .The water content of oil／water mixture can be gotten by measuring the phase constant . It can measure continuously water content in oil well. From the experiments in the three phase flow Lab and onsite,it is proved that can resolve the diffculty of measuring water content well in high water cut oil field.

Key words：Water Cut; Coaxial Line ; Electromagnetic Wave ; Continuous Measurement