哈得油田薄砂层油藏双台阶水平井注水开采数值模拟及剩余油分布规律研究
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摘要
哈得油田薄砂层油藏产层为泥盆系(关于该区地层有两种认识:石炭系和泥盆系,本文采用泥盆系这一认识)。Ⅰ、Ⅱ油组的上下两个厚度1~2m左右的薄砂层油层,深度在4500m,是典型的深薄油藏,适合于采用水平井注采井网进行开发。然而,自投产以来,两套薄砂层油藏双台阶水平井注水开采存在的两套油层的流体渗流规律认识不清晰,为此,本文采用数值模拟方法,建立了油藏数值模拟模型,模拟分析了油藏流体动力场特征,预测评价了剩余油分布规律及影响剩余油分布的因素,为以后调整挖潜提高最终采收率提供可靠的依据。
Oil group I and II of devonian in Hade oilfield is a deep thin sand reservoir in Hade oilfield which consists of two sub-layer reservoirs.The reservoir is about 4500m in depth and is 1~1.5m in thickness for each layer.The two-step horizontal well is used to recover petroleum in this thin reservoir.However,it is difficult to understand the pressure distribution in the two layers,and to assess the efficiency of water flooding.Hence,the numerical model is established and the history matching shows that the water cut and pressure calculated by the model are very close to the actual observed data.The model is used to calculate the distribution of remaining oil.Results show that the remaining oil is mainly controlled by micro tectonics and injection-production pattern.This will be helpful for us to optimize recovery scheme.
Oil group I and II of devonian in Hade oilfield is a deep thin sand reservoir in Hade oilfield which consists of two sub-layer reservoirs.The reservoir is about 4500m in depth and is 1~1.5m in thickness for each layer.The two-step horizontal well is used to recover petroleum in this thin reservoir.However,it is difficult to understand the pressure distribution in the two layers,and to assess the efficiency of water flooding.Hence,the numerical model is established and the history matching shows that the water cut and pressure calculated by the model are very close to the actual observed data.The model is used to calculate the distribution of remaining oil.Results show that the remaining oil is mainly controlled by micro tectonics and injection-production pattern.This will be helpful for us to optimize recovery scheme.
引文
[1]高运宗,杨建文.双台阶水平井注水工艺在薄砂层油藏的应用[J].油气田地面工程,2005,24(6):7~9.
[2]荣林,吴迪,韩易龙,等.微地震监测水驱前缘技术在哈得双台阶水平井的应用效果评价[J].大庆石油地质与开发,2006,25(2):94~96.
[3]高运宗,陈薇,何新兴,等.塔里木油田双台阶水平井吸水剖面测试[J].油气井测试,2007,16(2):62~64.
[4]陆程,丁一萍,关云东,等.双台阶水平井产能的确定方法[J].油气地质与采收率,2009,16(5):82~85.
[5]刘月田.各向异性油藏水平井开发井网设计方法[J].石油勘探与开发,2008,35(5):619~624.
[6]陈思,唐仲华,周锋德.曙22块油藏数值模拟及剩余油分布规律研究[J].工程地球物理学报,2008,5(1):108~114.
[7]刘滨,张原平,赵志龙,等.数值模拟在复杂断块油藏地质研究中的应用[J].新疆石油地质,2010,31(6):649~650.
[8]赵辉,姚军,吕爱民,等.利用注采开发数据反演油藏井间动态连通性[J].中国石油大学学报(自然科学版),2010,34(6):91~98.
[9]张晖,李新艳.油藏数值模拟法在临盘油田盘7块调整挖潜中的应用[J].今日科苑,2008,(8):84~85.
[10]廖海婴.腰英台DB34井区CO2驱替油藏数值模拟研究[J].西安石油大学学报(自然科学版),2010,25(5):50~55.
[11]钟波.商13-45块沙二下油藏数值模拟及剩余油研究[J].今日科苑,2010,(10):50~51.
[2]荣林,吴迪,韩易龙,等.微地震监测水驱前缘技术在哈得双台阶水平井的应用效果评价[J].大庆石油地质与开发,2006,25(2):94~96.
[3]高运宗,陈薇,何新兴,等.塔里木油田双台阶水平井吸水剖面测试[J].油气井测试,2007,16(2):62~64.
[4]陆程,丁一萍,关云东,等.双台阶水平井产能的确定方法[J].油气地质与采收率,2009,16(5):82~85.
[5]刘月田.各向异性油藏水平井开发井网设计方法[J].石油勘探与开发,2008,35(5):619~624.
[6]陈思,唐仲华,周锋德.曙22块油藏数值模拟及剩余油分布规律研究[J].工程地球物理学报,2008,5(1):108~114.
[7]刘滨,张原平,赵志龙,等.数值模拟在复杂断块油藏地质研究中的应用[J].新疆石油地质,2010,31(6):649~650.
[8]赵辉,姚军,吕爱民,等.利用注采开发数据反演油藏井间动态连通性[J].中国石油大学学报(自然科学版),2010,34(6):91~98.
[9]张晖,李新艳.油藏数值模拟法在临盘油田盘7块调整挖潜中的应用[J].今日科苑,2008,(8):84~85.
[10]廖海婴.腰英台DB34井区CO2驱替油藏数值模拟研究[J].西安石油大学学报(自然科学版),2010,25(5):50~55.
[11]钟波.商13-45块沙二下油藏数值模拟及剩余油研究[J].今日科苑,2010,(10):50~51.
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