三分量阵列感应共面线圈系井眼影响研究

发布时间：2018-05-01 13:19

本文选题：三分量阵列感应测井 + 共面线圈系　；参考：《电子测量与仪器学报》2017年01期

【摘要】：三分量阵列感应测井仪器是测量复杂地层信息的重要工具,消除共面线圈系的井眼影响是仪器设计与应用的关键。应用有限元软件,数值计算分析居中井眼中三分量阵列感应的共面线圈系与共轴线圈系的响应特性,对比共面线圈系实验室建模仿真与现场试验结果。结果表明:除最短子阵列,其余共面子阵列的井眼影响与共轴子阵列显著不同,井眼影响导致测井响应为负值;最长子阵列虽然井眼影响小,但趋肤效应影响严重,地层电导率测量范围比共轴线圈系小得多。通过计算分析共面线圈系在井眼周围不同泥浆和地层电导率时的涡流分布特性,揭示了共面线圈系与共轴线圈系差别较大的原因。提出新的2发1收线圈系结构,从几何因子角度分析了它在减小井眼影响、降低测井负响应等方面的优势。研究成果为三分量阵列感应测井仪器的研制和应用奠定了理论基础。
[Abstract]:Three-component array induction logging tool is an important tool for measuring complex formation information. The key to the design and application of the tool is to eliminate the hole effect of coplanar coil system. The response characteristics of coplanar coil system and coaxial coaxial coil system induced by three-component array in central well are analyzed numerically by finite element software, and the results of laboratory modeling and field test of coplanar coil system are compared. The results show that, except for the shortest sub-array, the borehole effect of the co-face array is significantly different from that of the coaxial subarray, and the borehole effect leads to a negative logging response, while the oldest sub-array has a serious skin effect, although the borehole effect is small. The measurement range of formation conductivity is much smaller than that of coaxial coil system. By calculating and analyzing the eddy current distribution characteristics of coplanar coplanar coaxial coaxial coaxial coils are found to be different from coaxial coaxial coaxial coils. A new structure of 2 generators and 1 take-up coils is proposed, and its advantages in reducing borehole influence and negative logging response are analyzed from the point of view of geometric factors. The research results lay a theoretical foundation for the development and application of three-component array induction logging tools.
【作者单位】：西安电子科技大学智能控制与图像工程研究所;西安石油大学电子工程学院;
【基金】：国家自然科学基金(41474108) 陕西省自然科学基础研究计划(2013JM5011) 2014年国家级大学生创新创业训练计划(201410705033)资助项目
【分类号】：P631.83

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