吉林油田大26井区储层潜在伤害因素分析

Analysis of the Potential Damage Factors of the Reservoir in Da-26 Well-block of Jilin Oilfield

在对吉林油田大 2 6井区储层岩石矿物组成、储层岩石孔隙结构特点及粘土矿物的种类、含量、分布状态和地层流体性质研究的基础上 ,对大 2 6井区储层潜在损害因素进行了详细的分析、研究 ,并利用“油气田开发智能信息综合集成系统”中的储层保护软件对大 2 6井区储层潜在损害因素作了进一步分析和评价 .研究结果表明 ,大 2 6井区储层潜在损害因素由大到小的顺序为 :速敏损害>水敏损害 >酸敏损害 >HCl敏感 >水锁损害 >有机垢损害 >无机垢损害 >酸渣损害 >

Based on the studies of the components and pore structure of the reservoir sand rock, the style, content and distribution of clay mineral, and the property of formation fluid, the potential damage factors of the reservoir are analysed in detail. The further analysis and evaluation of the factors was carried out by means of a software. According to the results of the analysis and evaluation, it is held that the potential damage factors in Da 26 well block are sensitivity to velocity (degree is from middle to weak), sensitivity to water (degree is the same as velocity sensitivity), sensitivity to acid, mainly to HCl (degree is weak), water block, organic deposition, inorganic deposition, useless acid, and polymer damage.