摘要
针对块状、复杂岩性区地震储层预测的难题,提出岩性地貌体概念。它是沉积体的岩性和形态特征的综合体,也是沉积体和纵横向反射结构特征对应关系的综合体,它的类型由地质体的沉积相、岩性、成层性和地震纵横向反射结构综合划分。该方法试图综合利用地震相、地震地貌及反演等多种信息,采用双域双面沉积体边界解释技术,降低复杂岩性预测时的多解性。提供岩性地貌体方法的关键技术及工作流程,并针对岩性复杂的湖底扇沉积进行了应用。研究中优选岩性地貌表征属性,并在平面-剖面相互约束下完成岩性地貌体解释。这套基于岩性地貌体的相控储层预测技术,对于块状、横向变化快、岩性复杂的湖底扇储层预测效果明显。
The concept of lithologic geomorphy is proposed for reservoir prediction in non-layered media and areas with complex lithology.It is a combination of geobody and its seismic reflections and their genetic relationships.Defined by sedimentary facies,lithology,stratification and seismic reflections,interpreted both by wheeler domain,time domain,plane and cross section,it tries to predict complex lithology by integrating seismic facies,seismic geomorphy and inversion methods.In the paper,a workflow and key techniques of lithologic geomorphy method are proposed and applied in a sub-lacustrine fan case.Some attributes are chosen to characterize the lithologic geomorphy,then lithologic-geomorphy units are interpreted under constrain of seismic-facies.This set of faciescontrolled reservoir prediction techniques based on lithologic geomorphy method can apply to reservoir prediction for sub-lacustrine fan with strong lateral variations in thickness and complex lithology.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第4期452-459,共8页
Journal of Chengdu University of Technology: Science & Technology Edition
基金
国家重大科技专项(2011ZX05006-005)
中国石油天然气股份有限公司科技项目(2014E-035)
关键词
岩性地貌体
双域双面解释
湖底扇
相控预测
lithologic geomorphy
2Dinterpretation
sub-lacustrine fan
facies control
