摘要
四川盆地L42井区大安寨段油气藏是一个受大安寨段介壳灰岩储层、裂缝双重控制的岩性油气藏,油气的运移通道主要是断裂及与之衔接的裂缝网络系统。在构造导向滤波的数据体上利用特征值相干、玫瑰花图、体曲率等多属性微断裂预测技术联合进行侏罗系大安寨段微断裂研究,结果显示三种属性均能识别出侏罗系大安寨主要微断裂发育区,其中以体曲率属性效果最好,不仅能有效识别微断裂发育区带,还能清晰地刻画出微断裂的展布方向及接触关系。这一技术也可在其它类似的致密岩储层油气藏预测中进行推广应用。
In L42 well block of Sichuan Basin, the Daanzhai reservoir is a lithological reservoir affected by both shell limestone reservoir of Daanzhai Member and fractures. The hydrocarbon migration pathway includes mainly fractures and their connecting fracture network system. A multiple-attribute(containing characteristics-value coher-ence, rose diagram, and body curvature) microfracture prediction technology was used to study microfacture in Jurassic Daanzhai Member. Results show that to use these three attributes can identify the main area of microfracture develop-ment. In which the best effect can be obtained by using the attribute of body curvature. This attribute can not only ef-fectively identify fracture development area or belt but also clearly delineate fracture distribution and their contact re-lation. The technology also can be applied to other similar tight-rock reservoirs.
出处
《天然气勘探与开发》
2014年第2期38-40,44,共4页
Natural Gas Exploration and Development
基金
中国石油致密油重大专项(项目编号:2012E-2601-03)<四川盆地侏罗系石油勘探开发关键技术研究>之课题3<侏罗系非常规石油地球物理勘探技术研究>
关键词
四川盆地
低孔低渗储层
微断裂
特征值相干
玫瑰花图
体曲率
Sichuan Basin,low-porosity low-permeability reservoir,mirofracture,characteristics-value coherence,rose diagram,body curvature
