基于岩石物理相的酸性火山岩储层渗透率计算方法  

Permeability calculation method for acidic volcanic rock based on petrophysical phase

作　　者：李洪娟[1] 覃豪[1] 杨学峰[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油学院学报》2011年第4期38-41,7+6,共4页Journal of Daqing Petroleum Institute

基　　金：国家重点基础研究发展计划"973"项目(2009CB219307)

摘　　要：火山岩储层非均质强、孔隙度—渗透率关系难以用单一回归数学模型表述,采用岩石物理相中层流指数作为表征参数,对徐深气田酸性火山岩储层岩心样品的孔渗关系分类,建立基于层流指数的孔隙度—渗透率关系模型;应用层流指数分类结果,对通过测井孔隙度频谱分析得到的储层缝洞指示参数进行刻度、分类,建立与层流指数分类对应的分类标准;对于非取心井应用缝洞指示参数选择渗透率模型进行储层渗透率计算.根据45口井的数据计算渗透率,与223块岩心分析渗透率对比.结果表明:计算渗透率精度得到提高,能够满足徐深气田精细气藏描述要求,对其他地区火山岩储层的渗透率计算具有借鉴意义.Volcanic reservoir heterogeneity is strong and it is difficult to describe the porosity-permeability relationship with mathematical models.Using the layer flow index of petrophysical phase as a characterization parameter,the paper classifies porosity and permeability relationship of the acidic volcanic rock reservoir core date in XUSHEN gas field,establishes the porosity-permeability relationship model based on layer flow index,uses the classification through the layer flow index to calibrate the cracks and holes indication parameter through log porosity spectrum analysis and classify it,and establishes the correspondence classification criteria with the layer flow index classification.For non-coring wells the paper selects permeability calculation model according to its size of the cracks and holes indication parameter and calculate reservoir permeability.Applying this method,this paper processes the data of 45 wells.The paper consist the permeability through logging calculation with the 223 core analysis permeability.The results showed that: accuracy has been greatly improved,the results can meet the needs of fine evaluation and development of gas reservoir,it can serves as a reference for the volcanic reservoir permeability calculation in other areas.

关 键 词：酸性火山岩储层 岩石物理相 层流指数 缝洞指示参数 孔隙度—渗透率关系 

分 类 号：TE122.23[石油与天然气工程—油气勘探]