礁滩相储集层平面非均质性定量表征技术  

Quantitative Characterization of Plane Heterogeneity of Reef Bank Reservoir

作　　者：靳秀菊[1,2,3] 侯加根[1] 刘红磊[2] 陈建[2] 刘欣[3] 

机构地区：[1]中国石油大学(北京)地球科学学院,北京102249 [2]中国石油化工股份有限公司中原油田分公司勘探开发研究院,河南濮阳457001 [3]中国石油化工股份有限公司中原油田普光分公司,四川达州635000

出　　处：《地质论评》2016年第5期1315-1328,共14页Geological Review

基　　金：国家科技重大专项(编号:2011ZX05017-001)资助成果~~

摘　　要：受沉积、成岩、构造破裂等作用影响,礁滩相储集层平面非均质性较强,但由于储集层孔隙类型多样,孔—渗关系复杂,储集层渗透率定量预测难度大,加上目前多借用碎屑岩表征参数和表征方法,致使储集层平面非均质性难以定量表征。以普光气田为例,通过分析礁滩相碳酸盐岩储集层非均质性影响因素,运用统计学中的主因子分析方法,优选出颗粒岩厚度百分比、隔夹层个数、孔隙度、基质渗透率、裂缝渗透率五项评价参数;而针对具有复杂孔隙结构特征的礁滩相储集层基质渗透率参数的取值,则引入反映孔隙形态和连通性的"孔构参数",开展储集层渗透率的测井精细解释与地震预测;以四级层序为研究单元级次,优选综合指数法,对井点上储集层非均质参数进行计算;再在传统数理统计方法评价储集层平面非均质性基础上,进一步采用地震预测渗透率反演数据体震控、沉积微相相控的多级约束,运用地质建模技术,定量评价了气田平面非均质性。研究成果较好的指导了气田开发动态分析、措施方案制定等,对气田开发具有重要意义。Affected by the effect of sedimentation, diagenesis, and tectonism, the plane heterogeneity of reef bank reservoir are serious. And as the reef bank reservoir is characterized by various pore types and complex relationship between Porosity and Permeability, seismic prediction of reservoir permeability has long been a major challenge. In addition, the quantitative characterization of plane heterogeneity of reservoir is also a major challenge, due to lack of characterization parameter and characterization method of reef bank reservoir. Taking Puguang gas field for example, through analyzing the controlling effect of the reef bank reservoir heterogeneity, five reservoir parameters including percentage of granular rock thickness, number of interlayer, porosity, matrix permeability and fracture permeability are introduced to calculate the heterogeneity parameter, by using main factor analysis method in statistics. According to the complex relationship between porosity and permeability of reef bank reservoir, frame flexibility factor is introduced to evaluate logging interpretation and seismic prediction permeability finely. On the basis of plane heterogeneity evaluation using traditional mathematical statistics method, the plane heterogeneity of reef plat reservoir is quantitative evaluating by geological modeling technology, which uses seismic predicting permeability and sedimentary facies as constraint. The research achievements have guide the development dynamic analysis and measure plan formulation finely, and have important significance in gas field development.

关 键 词：礁滩相储集层 平面非均质性 定量表征 综合指数法 复杂孔隙类型 孔构参数 渗透率地震预测 

分 类 号：P618.13[天文地球—矿床学]