长垣外围特低渗透油藏扶杨油层分类界限

发布时间：2018-05-30 22:14

本文选题：特低渗透油藏 + 分类指标　；参考：《大庆石油地质与开发》2016年06期

【摘要】：国内油藏分类标准将渗透率介于1×10-3μm2和10×10-3μm2的油藏划分为特低渗透油藏,而大庆油田长垣外围特低渗透油藏的开发实践表明,这类油藏的见水时间及开发效果仍存在差异,除渗透率级别外,储层裂缝发育是影响特低渗透油藏开发效果的另一重要因素。根据长垣外围特低渗透扶杨油层63个区块地质特征,以裂缝参数为首要分类指标,基质渗透率、平均喉道半径、孔喉比、可动流体饱和度和黏度为主要分类指标,结合开发难易程度将特低渗透油藏分为4类,确定了各类油藏主要参数的分类界限,为进一步研究特低渗透油藏水驱规律特征及开发政策调整提供理论依据。
[Abstract]:The domestic reservoir classification standard divides the reservoirs with permeability between 1 脳 10 -3 渭 m 2 and 10 脳 10 -3 渭 m 2 into ultra-low permeability reservoirs. The development practice of ultra-low permeability reservoirs around Changyuan in Daqing Oilfield shows that there are still differences in water discovery time and development effect of these reservoirs. Besides permeability level, reservoir fracture development is another important factor affecting the development effect of ultra-low permeability reservoir. According to the geological characteristics of 63 blocks in the extremely low permeability Fuyang oil formation around the Changyuan, fracture parameters are taken as the primary classification index, the matrix permeability, the average throat radius, the pore throat ratio, the movable fluid saturation and the viscosity are the main classification indexes. The ultra-low permeability reservoirs are divided into four categories in combination with the degree of difficulty in development, and the classification limits of the main parameters of various types of reservoirs are determined, which provides a theoretical basis for further study on the characteristics of water flooding in ultra-low permeability reservoirs and the adjustment of development policies.
【作者单位】：东北石油大学石油工程学院;大庆油田有限责任公司第二采油厂;
【基金】：国家自然科学基金“低渗透油藏表面活性剂驱微乳液渗流机理及数值模拟研究”(51474071)
【分类号】：TE348

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