定边张韩区块长2储层地质建模及其意义

The reservoir geological model and its significance of Chang 2 of triassic Yanchang of Zhanghan Area in Dingbian,Odors Basin

运用大量的钻井、测井、分析测试资料及动态资料为约束,采用确定性建模与随机建模相结合的方法探究定边张韩区块延长组长2储层地质建模及意义。文中建立了定边张韩区长2油层组包括构造模型、沉积微相模型、储层属性模型在内的三维地质模型。将所建地质模型与手工地质平面图对比分析可以看出,地质模型与手工地质平面图一致性较好;相控建模实现的孔隙度模型、渗透率模型受沉积微相的约束。所建模型比较真实地反映了研究区的实际地质情况,为研究区开发后期层内剩余油挖潜、井网加密调整等提供了可靠的地质依据及网格数据体。

To study the reservoir geological model and its signiticance ot Ghang 2 ot triassic ~ ancnang oI Lnangnan Area in Dingbian. Based on a large amount of drilling, logging, analyzing test and dynamic data, deterministic modeling methods and stochastic modeling methods are used. The refined 3-D geological models of Zhanghan area in Dingbian are established, which consists of structure model, sedimentary microfacies model and petrophysical prop- erty model. The comparative analysis of geological model and manual geological plane map shows their consistency. Porosity model and permeability model realized by facies-controlled modeling are constricted by the sedimentary mi- crofacies. The established geological models really reflect the actual geological conditions of the study area, which provides a reliable geological basis and a set of grid data volume for tapping resident oil in the layers and adjusting well network at a later stage.