【摘要】 为了在生产动态监测中实时准确地显示油井内多相流体流型,确定各相流体持率,对电磁波流动成像测井数据处理方法进行了实验室研究。首先建立了电磁波流动成像测量的物理和数学模型,并用有限元仿真方法求解,然后采用Twomey改进的光滑化算法重建图像,最后采用中值滤波和平均值滤波结合法、SWatanabe二值化、二值图像修正以及图像面积测量等方法改善成像质量。结果表明,综合分布模型在电磁波频率为6MHz时计算持率的相对误差为12.36%。该方法通过对井内流动的实时检测,获取了多相流体的二维或三维分布信息,为油井生产状况评价和油藏动态分析提供了准确的依据。图5表1参22更多还原

【Abstract】 To get the accurate and real-time display of the flow pattern and determine the phase hold-up in the process of monitoring production performance,an data processing method of electromagnetic imaging log is developed.Firstly,physical and mathematical models of flow imaging measurement are established.The finite element simulation is used to solve the problem.The smooth algorithm modified by Twomey reconstructs the image.The more accurate image is obtained by image processing,such as the combined method of median filtering and average filtering,S Watanabe binarization,image modifying,and measurement of the image area.Results show that,for the complex distribution model,the relative error of the phase hold-up is 12.36% with 6MHz frequency.By real-time detection of the multi-phase flow in wells,the method can obtain two-dimensional or three-dimensional distribution of the multi-phase flow,and provide foundation for production condition evaluation and reservoir performance analysis.更多还原