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在油田开发早期阶段,首批开发钻井结束后综合应用地质、电测井和波阻抗反演成果进行了精细地层对比,识别单砂体并确定井间边界,提出了建立单一河道砂体骨架模型的方法和途径,并提取了有关宽度、宽厚比等参数。与试井解释及同类型河道砂相关露头研究成果相比较,证实了该单砂体模型具有较好的合理性。将单砂体模型应用于井间加密钻井获得了成功。以该模型为基础,建立了三维油藏模型,优化了水平井钻井设计,成功地钻穿了预测的河道砂体,水平段钻遇率达到84.7%。
In the early stage of oilfield development, the first stratigraphic comparisons of geologic, electrical logging and wave impedance inversion results were made after the first exploratory drilling was completed. Fine stratigraphic comparisons were made to identify single sand bodies and to determine the crosswell boundary. A single channel sandbody model Methods and approaches, and extracted the parameters such as width, aspect ratio. Compared with the results of well test interpretation and the related outcrops of the same type of channel sand, it is proved that the single sandbody model has good rationality. Applying a single sand body model to cross-well encryption drilling has been successful. Based on the model, a 3D reservoir model was established to optimize the horizontal well drilling design and successfully drill through the predicted channel sand body. The horizontal drilling rate reached 84.7%.