豁免源多相流量计在多井合采混输单井计量中的应用

Application of multiphase flowmeter with exempt radiation source in single-well flow-rate measurement under the multi-well production and gathering mode

传统多相流量计计量精度低、放射源存在安全隐患且工艺复杂、费用高。豁免源多相流量计利用文丘里原理测量多相流的总流量,利用豁免源伽马传感器放射性吸收技术测量多相流的相分率,根据总流量和相分率的计算,得到油流量、水流量和气流量。经滩浅海某平台多井合采混输单井计量实例应用表明,与传统的计量相比,豁免源多相流量计测量精度高、作业安全、经济效益好。该设备减少了复杂配置,工艺简洁,无污染,具有一定推广价值。

Traditional multiphase flowmeters are deficient for low measurement accuracy,risky radiation sources,complex processes and high costs.The multiphase flowmeter with exempt radiation source measures the total flow rate of multiphase fluids according to the Venturi principle and the phase fraction of the multiphase fluids by using the exempt source gamma sensor radiation absorption technology.According to the total flow rate and phase fraction obtained,the flow rates of oil,water,and gas are determined.The application in measuring single-well flow-rate under the multi-well production and gathering model on a platform in paralic zone shows that the multiphase flowmeter with exempt radiation source achieves higher measurement accuracy,safer operation,and better economic benefits than traditional flowmeters.Moreover,the multiphase flowmeter with exempt radiation source avoids complex configuration,with simple process and no pollution.It is worth of promotion.