石油生产光纤-电导组合探针阵列多分相测井仪研究

Research on a fiber-conductance combined probe array multi-phase logging tool in petroleum productions

为解决石油生产多分相测量问题,基于课题组研制的创新型光纤-电导组合探针设计研制一种用于石油生产多参数测量的高精度、高灵敏度探测仪器。采用ZEMAX光线追迹方法和FEM数值分析方法对光纤-电导组合探针阵列多分相测井仪电场分布、响应特性进行了理论分析,且验证了其在流量为5、10、20、30 m^(3)/d,持气率为10%、20%、30%、40%,持水率为90%、80%、70%、60%等工况下良好的测量效果。为进一步证明其优良性能,以液相流量30 m^(3)/d,液相持水率25%、45%、65%及85%,气流量6、12、24 m^(3)/d等多相流工况为例进行动态实验分析,其持气率测量误差在5%以内,持水率误差在10%以内。实际动态实验与仿真模拟结果保持相同。充分表明光纤-电导组合探针阵列多分相测井仪的良好的性能。

To solve the problem of multi-phase measurement in oil production,a high-precision and high-sensitivity detection instrument for multi-parameter measurement of petroleum production is designed and developed,which is based on the innovative fiber-conductance combined probe developed by the research group.The ZEMAX ray tracing method and the FEM numerical analysis method are both used to theoretically analyze the electric field distribution and response characteristics of the fiber-conductance combined probe array multi-phase logging tool.It has been verified that a good measurement effect can be realized under working conditions such as flow rate of 5,10,20,30 m^(3)/d,gas holdup of 10%,20%,30%,40%,and water holdup of 90%,80%,70%,60%,etc.To further prove its excellent performance,the multiphase flow conditions are considered,such as liquid flow rate 30 m^(3)/d,the liquid phase water holdup 25%,45%,65%and 85%,and the gas flow rate 6,12,24 m^(3)/d,etc.The dynamic experimental analysis is carried out.The measurement error of FCCPA_MLT gas holdup is within 5%,and the water holdup error is within 10%.The actual dynamic experiment and the simulation results remain the same.Results show that the developed fiber-conductance combined probe array multi-phase logging tool has good performance.