致密气储层参数精细建模的测井分析方法  

FINE EVALUATION OF TIGHT GAS RESERVOIR WITH MODELING OF LOGGING RESERVOIR PARAMETERSFINE PARAMETERS

作　　者：宋子齐[1] 景成[2] 庞玉东[1] 张景皓[3] 李泽亮[1] 屈艳梅[1] 

机构地区：[1]西安石油大学石油工程学院 [2]中国石油大学(华东)石油工程学院 [3]西安石油大学地球科学与工程学院

出　　处：《国外测井技术》2014年第3期15-19,3,共5页World Well Logging Technology

基　　金：国家自然科学基金项目(NO.51104119);中国石油天然气股份有限公司科学研究与技术开发项目(NO.2010E-2304)

摘　　要：针对致密气储层受多期沉积、成岩作用及构造等因素影响,储层孔隙空间细小、孔隙类型结构和测井响应复杂,储层具有非均质、非线性分布的特点。利用岩石物理相分类研究致密气储层参数,确定评价储层岩石物理相的多种信息、划分方法和分类储层参数建模及评价解释方法。通过研究区致密气储层各类测井、岩心和试气资料,利用岩石物理相分类后建立储层参数模型中,其数据点的均匀程度及其反映出的线性关系都具有相对集中的趋势。特别是分类模型分别利用密度、声波时差孔隙度参数的综合拟合值求取孔隙度;渗透率则采用多种分类测井响应曲线求取,并利用Hodges-Lehmann法综合评估确定。从而,在一定程度上克服了致密气储层低信噪比、低分辨力的评价特征,为准确计算致密气储层参数提供了有效方法。As tight gas reservoirs are influenced by multi-period sedimentary, diagenesis and structure, they have small pore space, complex pore structure and logging response. The reservoirs are characterized by heterogeneity and nonlinearity distribution. So petrophysical facies classification can be used in the modeling of tight gas reservoir parameters in order to determine various information, dividing method, classified modeling of parameters and interpretation and evaluation method. The interpretation models of different types of reservoir parameters which are corresponding to reservoir petrophysical facies can be established by the use of logging, core and test data in the tight gas reservoir. The distribution fitting of data points has relatively concentrated distribution trend and a good linear relationship. The classified models which can calculate the effective porosity parameters, using the comprehensive fitted value of density and acoustic porosity models, and permeability by using a variety of classification log response curve. Hodges-Lehmann method can be used to assess permeability. It overcomes the disadvantages of low signal to noise ratio and low resolution which exist in the tight gas reservoir and provides an effective method to accurately calculate reservoir parameters of tight gas reservoirs.

关 键 词：岩石物理相分类 致密气储层参数 参数综合拟合值 Hodges-Lehmann法综合评估 测井解释方法 

分 类 号：P618.130.2[天文地球—矿床学]