整合多尺度信息的裂缝性储层建模方法探讨  

A modeling method for fractured reservoirs using multi-scale information

作　　者：彭仕宓[1] 索重辉[1] 王晓杰[2] 郎晓玲[1] 

机构地区：[1]中国石油大学(北京)地球科学学院,北京102249 [2]中国石化国际石油勘探开发有限公司,北京100083

出　　处：《西安石油大学学报（自然科学版）》2011年第4期1-7,共7页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家重点基础研究发展计划(973计划)(编号:2011CB707302-01)

摘　　要：由于裂缝性储层裂缝分布具有很强的非均质性,且在空间呈现块状分布,常规地质建模方法并不适用于裂缝建模,基于三维地震、测井及岩心裂缝观测,探讨了适合裂缝性储层的建模思路和方法,指出从岩心观测和测井解释上获得小尺度裂缝的参数,包括裂缝密度、几何形态以及其他裂缝属性的统计信息;基于三维地震获取大尺度裂缝的空间分布信息.通过对2种信息的整合,以大尺度裂缝分布为约束条件,用小尺度裂缝密度数据插值出储层空间的裂缝密度场,运用地质统计学随机建模方法,生成了离散裂缝网络模型及其裂缝孔隙度、渗透率等属性模型,探讨了一套适合裂缝储层的建模方法.Owing to their heterogeneity and special block distribution,the common reservoir modeling method is not suitable for the fractured reservoirs.Based on the seismic survey,logging data and core observation,a new modeling idea for fractured reservoirs is put forward.For the small-scale fractures,their character information such as fracture intensity,geometric and other parameters can be got from the core observation and logging interpretation.While for the large-scale fractures,their special distribution information can be obtained from the seismic survey.Through integrating the two kinds of information,the fracture intensity field of the reservoirs is obtained by the interpolation of small-scale fracture intensity data under the control of large-scale fractures information.Finally,the discrete fracture network model and other parameter models such as reservoir porosity and permeability are got by using the stochastic modeling method in geostatistics based on fracture parameters and intensity field.This is a modeling method suitable for the fractured reservoirs.

关 键 词：裂缝性储层 储层建模 裂缝密度 裂缝尺度 

分 类 号：TE19[石油与天然气工程—油气勘探]