基于井震结合的裂缝建模技术在渤中19-6区域的应用

Application of fracture modeling technology based on well-seismic combination in Bozhong 19-6 area

渤中19-6古潜山构造带是一种典型的多层次储层,自顶至底依次为孔隙带(砂砾岩)+裂缝带(风化壳溶蚀+内幕破裂)。裂缝在油气运移和富集中起重要作用,也是制约研究区油气勘探的关键。以古构造、古地貌背景为基础,基于地震资料分析与建模,探讨了裂缝的平面分布规律:裂缝发育受古构造控制,发育位置与构造位置重合,构造变化大的区域裂缝发育程度高。通过渗透率模型与岩心实验渗透率、裂缝模型与属性裂缝预测对比验证了模型的可靠性,精细刻画了地下实际裂缝发育情况,为进一步的勘探开发提供借鉴。

Bozhong 19-6 buried hill structural belt is a typical multi-layer reservoir.From top to bottom,it is the pore zone(glutenite)+fracture zone(weathering crust dissolution+inner rupture).Fractures play an important role in oil and gas migration and enrichment and are also the key to restricting oil and gas exploration in the study area.Based on the analysis and modeling of seismic data,the plane distribution of fractures is discussed based on the background of paleo-structure and paleogeomorphology.Faults and paleo-structure jointly control the fracture development,and the development position coincides with the structural position.Therefore,the fracture development degree is high in the region with large structural changes.The comparison between the permeability model and core experiment permeability,fracture model,and attribute fracture prediction verifies that the model is reliable.The underground actual fracture development description isacceptable and accurate,which can lay the foundation for further exploration and development.