深层高压低渗砂岩油藏应力敏感性实验  

Stress Sensitivity Experiment of Sandstone Reservoirs in Deep Section with High Pressure and Low-Permeability

作　　者：王瑞飞[1] 段雨安 吕新华[2] 邓瑞健[2] 

机构地区：[1]西安石油大学石油工程学院,西安710065 [2]中国石化中原油田分公司,河南濮阳457001

出　　处：《地质科技情报》2014年第1期90-94,共5页Geological Science and Technology Information

基　　金：国家自然科学基金项目(51104119);陕西省自然科学基金项目(2010JQ5002);陕西省教育厅自然科学专项(11JK0741)

摘　　要：为探讨深层高压低渗砂岩油藏储层的应力敏感问题,将取自渤海湾盆地东濮凹陷的深层低渗油藏样品进行了液体、气体应力敏感性实验;研究中以渗透率损害系数、渗透率损害率、不可逆渗透率损害率作为应力敏感性评价指标。研究结果表明,研究区深层高压低渗砂岩油藏储层为弱应力敏感,沙三段样品渗透率损害系数、渗透率损害率均高于沙二段样品,沙三段储层应力敏感性高于沙二段储层应力敏感性。气体应力敏感性实验的渗透率损害率整体高于液体应力敏感性实验的渗透率损害率,气体、液体应力敏感性实验所测得的不可逆渗透率损害率基本一致。In order to explore the stress sensitivity of sandstone reservoirs in deep section with high pres sure and low permeability, the stress sensitivity experiment on liquid and gas were conducted with the sample collected from Dongpu Sag in Bohai Bay Basin. The coefficient of injury of permeability, the dan〉 age rate of permeability and the irreversible damage rate of permeability were used as the evaluating index of the stress sensitivity. Results show that the stress sensitivity of sandstone reservoirs in deep section with high pressure and low-permeability is weak. The coefficient of injury of permeability and the damage rate of permeability of the third member of Shahejie Formation are higher than that of the second member of Shahejie Formation; however the stress sensitivity is higher in the third member of Shahejie Formation. The damage rate of permeability is higher in gas sample conmpare with fluid stress sensitivity experiment. The irreversible damage rates of permeability by the gas and fluid stress sensitivity experiment are almost the same.

关 键 词：深层高压低渗砂岩油藏 应力敏感性 渗透率损害系数 渗透率损害率 不可逆渗透率损害率 

分 类 号：TE122.23[石油与天然气工程—油气勘探]