摘要
火山岩储层非均质强,应用单一孔隙度-渗透率关系模型计算渗透率难以满足气藏精细评价需求。针对火山岩储层特征,首次将岩石物理相引入火山岩储层孔渗关系研究中,应用层流指数对孔渗关系分类并建立相应渗透率计算模型;应用岩心分类结果对储层缝洞指示参数进行刻度后,通过单井孔隙度频谱分析得到的储层缝洞指示参数选取相应渗透率计算模型,对储层渗透率进行计算。对45口井的数据进行处理,计算渗透率与223块岩心分析渗透率对比验证,具有较好一致性,满足气藏精细评价与开发需求。
Because volcanic reservoirs have strong anisotropy, the permeability calculated by simple porosity-permeability model can not meet the need of fine reservoir evaluation.According to the characteristics of volcanic reservoirs, petrophysical facies are introduced into the study of porosity-permeability relationship of volcanic reservoirs for the first time. The porosity-permeability relationship is classified by layer flow index and the relevant permeability computation module is established. The fracture and vug indication parameters are calibrated with core classification. According to the fracture and vug indication parameters from spectrum analysis of a single well, relevant permeability computation model is chosen, then reservoir permeability is calculated.The data of 45 wells are proceed. After comparing the calculated permeability with the one of 223 cores analysis, it is proved that they have good consistency which can meet the requirement of fine evaluation of a gas reservoir.
出处
《国外测井技术》
2014年第1期43-46,4,共4页
World Well Logging Technology
关键词
火山岩
岩石物理相
层流指数
渗透率
计算方法
volcanic rock
petrophysical facies
layer flow index
permeability
computation method
