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白垩系清水河组在车排子凸起东斜坡区由沙湾凹陷向隆起高部位层层超覆尖灭,北西—南东向断裂成排成带分布,易形成断层与地层超覆型复合圈闭。地震相干分析技术对识别小断距断层有较大的帮助,分频和振幅类地震属性的结合可有效识别薄砂层组超覆尖灭线,沿层振幅类属性特征可识别研究区各期砂层发育期三角洲前缘沉积体的分布,进一步预测砂体的发育区。构造解释与地震属性的结合可评价圈闭储层发育特征,指出研究区第二期砂层组发育5个断层地层圈闭,圈闭内砂体发育,具有重要勘探价值,其中A圈闭、C圈闭是下一步首选勘探目标。
Cretaceous Qingshuihe Formation overhangs in the east slope of Chepaizi uplift from the Shawan sag to the uplifted high. The northwest-southern eastward faults are distributed in succession and are prone to form overlying composite faults and strata Trapped The technique of seismic coherence analysis is helpful to identify small fault faults. The combination of frequency and amplitude seismic attributes can effectively identify the over-pinch line in the thin sand layer group. Distribution of sedimentary bodies in the delta front during sand development to further predict the development of sand bodies. The combination of tectonic interpretation and seismic attributes can evaluate the developmental characteristics of the trapped reservoirs. It is pointed out that there are 5 fault stratigraphic traps in the second sand zone of the study area and the sand body is developed in the traps, which has important exploration value. Among them, traps A, C Trap is the preferred exploration target for the next step.