石萌萌,高炜欣,李杰

• 1:西安石油大学陕西省油气井测控技术重点实验室
• 2:西安石油大学光电油气测井与检测教育部重点实验室

摘要(Abstract)：

针对目前化学凝胶物理特性测量多采用接触式测量方法，操作复杂且设备昂贵的实际问题，研究了一种基于图像处理的非接触式凝胶物理特性分析仪。通过毛细管模拟凝胶在岩石孔隙中的流动状态，利用高清摄像及光学显微放大镜获得凝胶在压力作用下在毛细管中的流动图像；通过OTSU阈值分割法和Sobel边缘检测算子对其表面张力曲线进行分割及边缘提取，在此基础上使用最小二乘椭圆拟合方法对表面张力曲线进行完整性拟合；最后提出用曲率中心确定参数Δl的算法，准确计算凝胶的物理特性。油田实际4个批次凝胶的物理特性测试结果表明，本文所设计的物理特性分析系统可以准确地获得凝胶实际物理特性，与传统接触式物理特性测量分析仪相比，该测量系统避免了操作复杂的问题且测量精度明显提升，平均相对误差仅为1.58%,满足工程应用中的精度要求。

关键词(KeyWords)： 化学凝胶;黏度测量;泊肃叶定律;椭圆拟合

Abstract:

Keywords:

基金项目(Foundation): 陕西省重点研发项目(2020GY-179);; 西安石油大学研究生创新与实践能力培养项目(YCS19213107)

作者(Author): 石萌萌,高炜欣,李杰

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