水平井双感应电阻率响应模拟及其在水平井解释方面的应用

Horizontal Well Logging Interpretation Method Research and Its Applications in Honghe Oilfield of Southern Erdos Basin

从双感应电阻率响应正演模拟出发,引入了一种新的水平井测井解释方法。以导眼井地质模型为约束,通过已建立的双感应电阻率仪器的响应模型,模拟测井仪器的电阻率与实测值对比,调整井眼轨迹与地层界面视倾角,并结合区域地质与地震信息,最终实现井眼轨迹与储层顶底界面交互识别,建立两者的二维空间响应关系。此套技术方法在鄂南地区红河油田成功应用,并提出了两种水平井解释模式,单一砂体及复杂薄层解释模型,认证了水平井解释方法的可靠性,并为压裂层段优选提供可靠的依据。

Based on the forward modeling of the dual induction resistivity,a new horizontal logging interpretation was introduced.Restrained by the pilot well geological model,using the dual induction resistivity response models,the calculated dual resistivity of the logging was compared with the measured values to adjust correlations between the well trajectory and inclination angle.Combined with the geology and seismic information,the spatial relationship between well trajectory and the reservoir was interactively identified under two-dimensional distribution.This method was applied successfully in Honghe field of southern Erdos basin and two interpretation models were proposed,including single sandbody and complex sandbody,which provide the reliable evidence for the optimal selection of fracture section.