【作者】 孙业恒；

【导师】 彭苏萍；

【作者基本信息】 中国矿业大学（北京） ， 矿产普查与勘探， 2009， 博士

【摘要】 低渗透砂岩油藏储层模型的建立以裂缝系统的数值模拟模型为重点。本文以东营凹陷史南油田史深100块沙三中低渗透砂岩油藏为研究对象,针对该类油藏储层微裂缝发育的特点,通过岩心观察和测井解释方法开展了低渗透砂岩油藏裂缝识别与描述。以该区内多口取心井岩心样品的力学试验为基础,建立岩石力学模型,并以裂缝发育程度和规模为桥梁,建立微裂缝性质和物性参数与地应力场的定量关系；在地应力场模拟和油藏数值模拟一体化研究中,详细阐述了建立低渗透砂岩油藏双孔双渗储层三维模型中网格系统耦合、形状因子、裂缝孔隙度、裂缝方向渗透率、基质系统储层模型的计算及建立方法；通过开发历史拟合,重现了史深100块沙三中油藏开发历程,确定了剩余油潜力区；提出开辟小井距试验区,通过井网加密等调整技术可以大幅度提高史深100块沙三中油藏的开发效果。更多还原

【Abstract】 The establishment of model for low permeable sandstone reservoir is emphasized on numerical simulation model for fracture system. Took the low permeable sandstone reservoir of middle part of the third member of Shahejie formation (Es3 for short) in Block Shishen-100, in Shinan oilfield, Dongying sag as an example, in view of fracture developing features in this kind of reservoir, by way of drilling core observation and logging interpretation, the thesis carried out detailed fracture detection and description. Based on mechanical testing data of abundant drilling samples, the thesis established rock mechanical model, and took fracture developing degree and scale as connection, the thesis established quantitative relationship between microfracture properties and stress field, as well as quantitative relationship between physical properties and stress field. During integrated study of stress field modelling and numerical reservoir modelling, the thesis explained how to establish 3-dimensional reservoir model for low permeable sandstone reservoir in aspects of fracture network coupling, shape factor, fracture porosity, directional permeability of fracture, and model for reservoir bed matrix. By way of history matching, the thesis reconstructed exploitation history of middle part of Es3 reservoir in Block Shishen-100, and determined area with big potential of residual oil. Consequently, test area for close spacing well pattern is suggested. The thesis pointed out that technical adjustment such as well pattern thickening can greatly improve developing effect in middle part of Es3 reservoir in Block Shishen-100.更多还原