论文详情
针对海相超深层碳酸盐岩复杂断控缝洞型储集体, 目前常规建模方法通常将碳酸盐岩储层进行简单化、抽象化, 没有考虑深大走滑断裂对缝洞体分布的控制作用以及近地表和上覆地层对储层的影响。常规方法建立的地震地质正演模型难以满足复杂地震波场特征规律认识需求, 对碳酸盐岩缝洞储集体复杂的波场响应特征分析难以起到更精确的指导作用。为此, 针对碳酸盐岩断控缝洞储集体的复杂地震地质条件, 提出了多源信息融合复杂近地表建模、复杂火成岩建模、地质趋势约束随机缝洞体建模以及地质约束建模一体化融合等方法, 并利用这些方法建立了海相超深层碳酸盐岩地震地质综合模型。所建的综合模型更逼近真实地震地质条件, 利用综合模型可以获得更接近实际情况的缝洞储集体复杂地震波场响应特征, 从而提高对缝洞储集体复杂波场传播规律的认识, 为缝洞储集体相关地震数据的采集、处理和地震资料解释提供更准确的理论依据。
To predict ultra-deep carbonate reservoirs accurately, an important way is geologic modeling followed by seismic forward modeling.However, conventional modeling methods are usually too simplified to consider the control of deep-seated strike-slip faults on fractured-vuggy units and the influence of near-surface and overlying formations on reservoirs.Therefore, it is hard to establish satisfactory responses consistent with complicated subsurface seismic signatures.To cope with complex seismic-geologic conditions, we discuss a novel integrated modeling approach that includes complex near-surface modeling using multi-source information, modeling of complex igneous rocks, random fractured-vuggy reservoir modeling with geologic constraints, and model fusion with geologic constraints.We use this approach to construct a comprehensive seismic-geologic model for ultra-deep marine carbonate reservoirs, which is more geologically effective and can be used to obtain complex seismic responses for a better understanding of complex wave propagation in fractured-vuggy reservoirs and consequently improved seismic acquisition, processing and interpretation.