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在川东大池干井构造和黄草峡构造上, 池 57井、草 31井都在下三叠统嘉陵江组嘉二2 获得高产工业气流。嘉二2 岩性横向变化大、储层薄的特点给储层预测工作带来了极大的困难。为了搞清川东嘉二2 储层的地质、测井特征及其分布规律, 提出了用Strata速度反演与DCI密度约束反演联合识别川东嘉二2 薄储层的方法。通过对过池 57井、草 31井的两条地震测线做Strata速度反演和DCI密度反演, 分析结果显示, 两条测线的密度反演剖面能较好的反映了储层的横向变化, 且密度反演剖面要好于速度反演剖面, 与实际地质、测井情况更加吻合。由此可见, 将该方法应用于川东嘉二2 储层预测工作是可行的。
On the structure of Dachi dry well and Huangcao gorge in East Sichuan Basin, wells 57 and 44 are all obtained high-productivity industrial gas flow in the Lower Triassic Jialingjiang Formation Jia 2 2. Jia 2 2 Lateral variation of lithology, thin reservoir characteristics of the reservoir prediction has brought great difficulties. In order to find out the geologic and logging characteristics and distribution of the Chuandong 2 reservoir, we proposed a combined method of Strata velocity inversion and DCI density constraint inversion to identify the Chuandongjian 2 thin reservoir. Strata velocity inversion and DCI density inversion are performed on the two seismic lines measured in Weike 57 and Well Cao-31. The results show that the density inversion of the two lines can better reflect the horizontal direction of the reservoir Change, and the density inversion section is better than the velocity inversion section, more in line with the actual geology and logging conditions. Therefore, it is feasible to apply this method to the prediction of reservoir in East Sichuan Province.