井地电位法中变物性参数的异常响应的模拟与分析
Modeling and analysis for abnormal response on variable physical parameters about borehole-ground DC method
为了研究地下异常体几何、物性参数变化对井地电位法地表响应的影响规律，对垂直线源激励下的变物性参数地下异常体采用三维有限单元法进行了正演模拟。模拟结果表明在浅部时，异常形态清晰，随深度的增加，异常响应的形态变得模糊；地表异常响应对厚度反应不灵敏；对水平规模大小变化反应非常灵敏。这些规律将对油气田剩余油分布和注水推进前沿的确定和井地电位仪器分辨率的设计提供指导作用，并为井地电位法反演成像奠定相关基础。
o research the influence law of the surface abnormal response by the variable physical parameters about borehole-ground DC method,we modeling the abnormal response with the finite element method.The result showed the anomaly shape is clear when the anomalous body lies in the terrene shallow,the anomaly shape became thicken with the depth.The surface abnormal response is Insensitive to thickness,is opposite to lateral dimension.All these rules will give some reference and guide to determine the distribution of the residual oil and the the position of the waterflood front,the design of instrumental resolution.At the same time,the results laid the foundations for inversion.
刘海飞、冯德山、陈德鹏
油气田开发石油天然气地质、石油天然气勘探地球物理学
井地电法变物性参数有限单元法三维模拟异常响应
Borehole-ground DC methodVariable physical parametersFEM3D modelingbnormal response
刘海飞,冯德山,陈德鹏.井地电位法中变物性参数的异常响应的模拟与分析[EB/OL].(2009-09-22)[2025-08-04].http://www.paper.edu.cn/releasepaper/content/200909-595.点此复制
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