摘要
致密砂岩储层原始含油饱和度是油田勘探、开发和储量评价的重要参数。松辽盆地北部F油层属于低孔、特低渗致密砂岩储层,且孔隙结构复杂。以阿尔奇公式为基础,采用岩电实验直接测得的a、b、m、n值计算原始含水饱和度,与密闭取心样品分析得到的含水饱和度对比误差大,经分析认为主要由岩电实验过程与测井环境的差异所导致的。应用岩电实验测得电阻率刻度测井实测电阻率技术,确定适合测井环境下a、b、m、n值,得到了适合致密砂岩油层的变参数原始含油饱和度解释模型。应用密闭取心分析得到原始含油饱和度,与模型解释结果对比,绝对误差在5%以内,满足了储量评价和油田生产需要。
The original oil saturation of tight sandstone reservoir is an important parameter for exploration, development and reserve evaluation of oil field.F reservoir in the north of Songliao Basin belongs to low porosity and low permeability tight sandstone reservoir, and its pore structure is complex. Based on Archie formula, used rock electric experiment directly measuring have of a, and b, and m, and n value calculation original containing water saturated degrees, results and sealed coring well analysis saturated degrees is errors larger, Analysis of core experiment resistivity and resistivity logging data of different, so, to confined sealed coring well and rock electric experiment analysis information for pursuant to, Rock resistivity measured by experiment and well logging measurements of resistivity of building relationships, further suitable for logging environment under a, b, m, n, Further analysis of the variation of parameters,.By varing parameters of Archie formula,obare suitable for tight sandstone reservoir of Archie saturation interpretation model with variable parameters. Interpret the results and analysis of the sealed coring wells get original oil saturation, contrast, the absolute error in 5%,reserves evaluation and oil production needs are met.
出处
《国外测井技术》
2018年第2期13-16,2,共4页
World Well Logging Technology
基金
国家科技重大专项大型油气田及煤层气开发
课题六低渗
特低渗复杂油藏规模有效动用关键技术项目(2017ZX05013-006)
关键词
致密砂岩
原始含油饱和度
测井资料
解释方法
tight sandstone
initial oil saturation
logging data
means of interpretation
