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迄今为止,利用层序地层学理论研究陆相地层层序内部的岩性变化规律和对传集层的分布进行预测,仍是一个未能圆满解决的复杂问题。与海相环境不同,在陆相盆地中,影响沉积物可容空间的因素更为复杂多样,这主要裹现为河流平衡剖面对基准面的影响,以及气候和构造运动对沉积物的补给作用。本文根据准噶尔盆地东部地区储油砂体的地震反射特征,提出了利用三维地震资料追踪对比储层的相应模式,以准层序为单元的地震对比方案,成功地重构了河沈沉积在不同发育阶段的原始沉积而。在此基础上,利用反射地震资料的沿是振幅信息,即可有效地预测河流砂岩储层分布范围。
Up to now, it is still a complex problem that can not be satisfactorily solved by using the theory of sequence stratigraphy to study the lithology variation in the terrestrial stratigraphic sequence and predict the distribution of the stratigraphic layer. Different from the marine environment, in the continental basins, the factors affecting the sedimentary space are more complex and diverse, which are mainly the effect of the river balance profile on the reference plane and the recharge effect of the climate and tectonic movement on the sediments . Based on the seismic reflection characteristics of oil-bearing sand bodies in the eastern part of Junggar Basin, this paper proposes a seismic contrast scheme using three-dimensional seismic data to track the corresponding reservoirs in comparison with the quasi-sequence and successfully reconstructs the sediments of the river sediments in different The original deposition of the developmental stage. Based on this, the distribution of river sandstone reservoirs can be predicted effectively by using the amplitude information of the reflection seismic data.