一种致密气储层参数精细建模的测井评价分析方法——以苏里格气田东区为例  

A logging evaluation analysis method of fine modeling with tight gas reservoir parameters - with Eastern Sulige gasfield for example

作　　者：宋子齐[1] 景成[2] 庞玉东[1] 田新[1] 张景皓[3] 

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

出　　处：《低渗透油气田》2014年第1期59-64,共6页

基　　金：国家自然科学基金项目（编号：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（编号：2010E-2034）.

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建立储层参数模型，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。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。In the light of characteristics such as tight gas reservoirs affected by multistage deposition, diagenesis and tectonic factors, leading to small reservoir pore space, complex pore structure types and well-logging responses, heterogeneous reservoirs with non- linear distribution, tight gas reservoir parameters are classified and studied by using petrophysical facies to determine a variety of information for evaluating resel＇voir petrophysical facies, pavlitioning method, reservoir modeling with classified parameters, and evaluation and interpretation methods. Through various types of loggiug, core and gas test data of the tight gas reservoirs in the study area, reservoir parameter model is established by using petrophysical facies classification. The uniformity degree of the data points and the reflected linear relationship have a relative concentration trend. Especially, the porosity is directly obtained by comprehensively fitted values of porosity parameters got respectively from the density and acoustic logging （slowness） in the classification model. The permeability is obtained using a variety of classified log response curves, and determined by the integrated assessment with the use of Hodges-Lehmann method. Thus, it to some extent overcomes the shortcomings of low SNR, low-resolution evaluation features of tight gas reservoirs, and provides an effective method for accurate calculation of tight gas reselvoir parameter.

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]