同层系两种驱油剂同驱压力干扰调整研究  

Study on Pressure Interference and Adjustment of Flooding of Two Kinds of Oil Displacement Agents in the Same Layer System

作　　者：莫爱国 李江涛[2] Mo Aiguo;Li Jiangtao(Yushulin Oil Production Plant of Daqing Oilfield,PetroChina,Daqing Heilongjiang 163000,China;Northeast Petroleum University,Daqing Heilongjiang 163318,China)

机构地区：[1]中国石油大庆油田榆树林油田开发有限责任公司,黑龙江大庆163000 [2]东北石油大学,黑龙江大庆163318

出　　处：《石油化工高等学校学报》2020年第4期92-96,共5页Journal of Petrochemical Universities

基　　金：国家自然科学基金项目(41372153);中国石油天然气股份有限公司重大科技专项(2016E-0211)。

摘　　要：针对大庆油田高含水X区块同开发层系不同区域水、聚、三元同驱造成区块压力不平衡导致部分油井产油量较低的问题,应用统计计算、理论分析并结合油藏数值模拟的方法进行研究。得出区块储层平面高低压力区域压力相互干扰主要是由于不同驱油剂储层增压效果差异引起的,并确定了需要调整的高低压区的井号。通过在储层低压区的水井增注,高压低渗水井压裂,高压中高渗水井对应连通性好的油井提液降压调整油藏平面压力不均衡,缓解高低压井区间相互干扰。在对区块压力调整后,同驱层油井日增油量在2.5 t以上,得到了较好的开发调整效果。To solve the problem of low oil production ability of some wells caused by the imbalance of pressure in the water,polymer and ASP flooding of different regions of the same development zone in high water cut block X of Daqing oilfield in the high water cut,statistical calculation,theoretical analysis combined with reservoir numerical modeling are applied.It is concluded that the mutual interference of pressure in the high and low pressure areas of the reservoir plane is mainly caused by the difference in the pressurization effect of different oil displacement reservoirs,and the well number of the high and low pressure areas that need to be adjusted is determined.After that,through increasing the injection rate of water wells in the low⁃pressure area of the reservoir,fracturing the water wells of high⁃pressure and low⁃permeability reservoir block,and rising the production rate of the oil wells of high⁃pressure,medium⁃high⁃permeability regions,the imbalance of reservoir plane pressure is adjusted,and the mutual interference between high⁃pressure and low⁃pressure wells is alleviated.After adjusting the block pressure,the daily increase rate of oil wells in the same drive layer is above 2.5 t,and a good development adjustment effect is obtained.

关 键 词：高含水 驱油剂 同驱层 高低压区域 压力干扰 压力调整和治理 

分 类 号：TE983[石油与天然气工程—石油机械设备]