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  

Numerical Simulation of Flooding Recovery by Two Step Horizontal Well and Study of Remaining Oil Distribution in Deep-Thin Sandy Reservoir of Hade Oilfield

作　　者：伍轶鸣[1,2] 唐仲华[1] 卞万江[2] 王陶[2] 周炜[1] 

机构地区：[1]中国地质大学资源学院,湖北武汉430074 [2]中石油塔里木油田公司开发事业部,新疆库尔勒841000

出　　处：《工程地球物理学报》2011年第2期231-236,共6页Chinese Journal of Engineering Geophysics

基　　金：国家重点基础研究发展计划项目(编号:2006CB202308)资助

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.

关 键 词：数值模拟 双台阶 水平井 剩余油 

分 类 号：TE34[石油与天然气工程—油气田开发工程]