| 瞬变电磁法救援井方位角误差分析与仿真 |
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| 引用本文： | 杜芙蓉,党瑞荣,王港.瞬变电磁法救援井方位角误差分析与仿真[J].石油化工应用,2021(3):10-13,36. |
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| 作者姓名： | 杜芙蓉 党瑞荣 王港 |
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| 作者单位： | 西安石油大学电子工程学院 |
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| 基金项目： | 国家重大专项课题,项目编号:2016ZX05028-001;国家自然科学基金,项目编号:41874158,51974250。 |
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| 摘 要： | 救援井电磁探测以井下瞬变电磁信号模型为基础,通过对事故井的空间几何定位,利用救援井与事故井在不同深度的距离计算相对方位,确定事故井套管与救援井之间的方位角信息。并结合实测数据利用MATLAB对事故井套管与救援井的方位角误差进行仿真分析。结果表明:方位角误差与深度步长成正比,而随救援井倾角和两井相对距离呈现先递增后递减的趋势。该研究结果为降低方位误差、提高救援井与事故井连通率提供支持。
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| 关 键 词： | 瞬变电磁 救援井 误差分析 探测定位 |
Analysis and simulation of azimuth error of rescue well by transient electromagnetic method |
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| DU Furong,DANG Ruirong,WANG Gang.Analysis and simulation of azimuth error of rescue well by transient electromagnetic method[J].Petrochemical Industry Application,2021(3):10-13,36. |
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| Authors: | DU Furong DANG Ruirong WANG Gang |
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| Affiliation: | (School of Electronics Engineering,Xi'an Shiyou University,Xi'an Shaanxi 710065,China) |
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| Abstract: | The electromagnetic detection of rescue well is based on the downhole transient electromagnetic signal model.Through the spatial geometric positioning of the accident well,the relative azimuth is calculated by using the distance between the rescue well and the accident well at different depths,and the azimuth information between the accident well casing and the rescue well is determined.Combined with the measured data,the azimuth error of accident well casing and rescue well is simulated and analyzed by MATLAB.The results show that the azimuth error is directly proportional to the depth step,and increases first and then decreases with the dip angle of the rescue well and the relative distance between the two wells.The research results provide support for reducing azimuth error and improving the connection rate between rescue well and accident well. |
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| Keywords: | transient electromagnetic rescue well error analysis detection and positioning |
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