油井多相流电磁成像测量敏感场仿真  

Simulation of sensitivity field for electromagnetic tomography in multiphase flow well logging

作　　者：赵彦伟[1] 吴锡令[1] 王晓星[1] 

机构地区：[1]中国石油大学资源与信息学院,北京102249

出　　处：《地球物理学报》2007年第3期946-950,共5页Chinese Journal of Geophysics

基　　金：国家自然科学基金项目(60472019);中国石油天然气集团公司测井重点实验室项目资助

摘　　要：为了考察油井多相流电磁成像测量的敏感场分布,本文根据阵列电极结构和测量电磁场特性,应用有限元求解流体截面的电磁场问题,对于不同介质分布模型,计算电势分布,进而模拟测量敏感场.仿真结果表明,测量敏感场呈马鞍面状分布,在靠近发射电极和测量电极的区域敏感性较强,在弧形区域的中间敏感性较小.In order to find the sensitivity field for electromagnetic tomography in multiphase flow well logging, we calculate potential distribution using FEM （Finite Element Method） according to the structure of array electrodes and the characteristic of electromagnetic field section, then simulate sensitivity fields of different distribution models. The results indicate that the sensitivity field has a saddle-shape within the region from transmitting electrode to measuring electrode. It is more sensitive nearby the transmitting and measuring electrodes than in the inner region of the saddle-shape band.

关 键 词：油井 多相流 成像测量 敏感场 

分 类 号：P631[天文地球—地质矿产勘探]