摘要
在韵律性砂岩底水油藏的开发过程中,随着地下原油的不断采出,由于油水密度差异,底水会向上运动,形成底水锥进,而隔板的存在有效地抑制底水锥进,影响油藏水驱特征,改善开发效果。沉积韵律是厚层砂岩体内部水淹分布规律的主要控制因素。隔板的类型及展布特征均会影响韵律性砂岩底水油藏底水锥进速度的快慢和油藏开发效果的好坏。以某油田9区韵律性砂岩底水油藏为参照,运用数值模拟方法建立了三维二相的黑油模型,研究了不同隔板尺寸大小、隔板位置及隔板渗透率对某油田9区韵律性砂岩底水油藏的影响。结果表明:隔板尺寸、隔板位置、隔板渗透率是影响韵律性砂岩油藏底水锥进速度、底水锥进形态及油藏采出程度的重要因素。
In the development of rhythmic sandstone bottom water reservoirs, with the continuous extraction of underground crude oil, due to the difference of oil-water density, the bottom water will move upwards, forming bottom water coning, but the existence of the partition effectively can suppress the bottom water cone, affecting the characteristics of reservoir water flooding and improving development result. Sedimentary rhythm is the main controlling factor for controlling the distribution law of water flooding inside thick sand bodies. The type and distribution characteristics of the partitions will affect the speed of the bottom water coning of the rhythmic sandstone bottom water reservoir and the development effect of the reservoir. Based on the rhythmic sandstone bottom water reservoir in the 9 th district of an oilfield, a three-dimensional two-phase black oil model was established by numerical simulation method. The effect of the size of the partition, the position of the partition and the permeability of the partition on the reservoir was studied. The results showed that the size of the baffle, the position of the baffle and the permeability of the baffle were important factors affecting the bottom water coning rate, the bottom water coning pattern and the recovery degree of the reservoir in the rhythmic sandstone reservoir.
作者
宋惠馨
张茂林
薛军
王贺
张艺钟
彭军
唐雯
SONG Hui-xin;ZHANG Mao-lin;XUE Jun;WANG He;ZHANG Yi-zong;PENG Jun;TANG Wen(College of Petroleum Engineering,Yangtze University,Hubei Wuhan 430100,China;Collaborative Innovation Center for Unconventional Oil and Gas,Yangtze University,Wuhan Hubei 430100,China;Jianghan Oilfield Branch Exploration and Development Research Institute,Hubei Wuhan 430073,China;Southwest Oil and Gas Field Chongqing Gas Field,Chongqing 400021,China)
出处
《当代化工》
CAS
2019年第11期2608-2613,共6页
Contemporary Chemical Industry
基金
十三五国家科技重大专项,子课题名称:盐间页岩油有效开发技术政策研究,项目号:2016ZX05049005-010
子课题名称:涪陵地区五峰组-龙马溪组页岩气压裂及采气规律研究,子课题编号:2016ZX05060-026.
关键词
底水油藏
沉积韵律
隔板
底水锥进
数值模拟
影响因素
bottom-water reservoir
sedimentary rhythm
partition
water coning
numerical simulation
influencing factors
