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古河道河床的侵蚀作用控制碳酸盐岩暗河岩溶储层发育和岩溶储层的油气成藏。因此,识别古河道河床的侵蚀深度有助于预测油藏发育位置。提出一种古河道河床深度及河道侧边界自动识别技术。在设置河床种子点的基础上,通过估算河床地震同相轴的相干和倾角驱动河床反射界面的自动追踪,同时结合多窗口旋转扫描识别河道边界,实现自动追踪古河道,进而识别河道发育期次及侵蚀深度。该技术在塔里木盆地哈拉哈塘地区碳酸盐岩领域实际应用中,识别出8条古水系及其河床的侵蚀深度。侵蚀深度控制岩溶强度,基于河床侵蚀深度,实现河床周边暗河岩溶系统刻画。
The erosion of the ancient riverbed controls the development of the carbonate rock and the reservoir formation of karst reservoirs. Therefore, identifying the erosion depth of the ancient riverbed helps to predict the location of the reservoir. Proposed an ancient river bed depth and river side boundary automatic identification technology. On the basis of setting the seedbed of river bed, automatic tracking of reflection interface of river bed driven by estimating the coherence and dip angle of seismic bedrock of riverbed is carried out. At the same time, the multi-window rotary scanning is used to identify the boundary of river course, and the automatic tracking of ancient river course is realized. Erosion depth. This technique identifies the depth of erosion of eight paleo-water systems and their river beds in practical applications in the carbonate area of the Halahatang area in the Tarim Basin. Erosion depth control karst strength, based on the depth of riverbed erosion, to realize the riverbed karst depiction around the riverbed.