CB地区密闭取心井水淹层饱和度校正方法研究  

Research of oil saturation correction methods for water flooded layer in sealing core well of CB area

作　　者：张菲[1] 孙培安[1] 王善强[2] 

机构地区：[1]中国石化江苏油田分公司勘探开发研究院,江苏扬州225009 [2]中国石化华东石油工程有限公司地质测井处,江苏扬州225000

出　　处：《复杂油气藏》2016年第2期54-58,共5页Complex Hydrocarbon Reservoirs

基　　金：江苏油田分公司"密闭取心井储层参数特征研究"(JS13013)

摘　　要：常压密闭取心过程中因孔隙体积变化、降压脱气等因素会导致油水饱和度损失,对水淹层必须校正饱和度损失量。分析了饱和度校正的四种方法:归一数理公式法、经验公式校正法、实验测量校正法和理论公式计算法,并将其应用于江苏油田CB地区水淹层的饱和度校正。应用结果显示饱和度校正方法的选择与储层的水淹程度有关。校正后的含油饱和度反映了地层真实的剩余油饱和度分布情况,可为改善油藏后期开发效果提供了依据。In the process of sealing core,the increasing pore volume and degasification by release of pressure will lead to the loss of oil and water. The loss is more for water flooded reservoir and must be corrected. This paper provides four kinds of correction method： normalized mathematical formula,empirical method,laboratory measurement and theoretical equation.These methods were applied to correct the water saturation of water flooded layers in CB area,and the results indicate that different correction methods should be selected by different drowned degree of reservoir. The corrected oil saturation really reflects the distribution of remaining oil,and can provide reliable support to improve the development effectiveness.

关 键 词：常压密闭取心 饱和度校正 水淹层 CB地区 

分 类 号：TE323[石油与天然气工程—油气田开发工程]