海上油田水驱后气水交替驱室内实验和数值模拟研究  

Laboratory Experiment and Numerical Simulation Study of Gas-Water Alternate Flooding After Water Flooding in Offshore Oil Fields

作　　者：宋宏志[1] 杨二龙[2] 李田靓 林涛[1] 孙玉豹[1] 张晓彤[2] SONG Hong-zhi;YANG Er-long;LI Tian-liang;LIN Tao;SUN Yu-bao;ZHANG Xiao-tong(Oilfield Production Research Institute of China Oilfield Services Limited,Tianjin 300450,China;School of Petroleum Engineering,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]中海油田服务股份有限公司油田生产研究院,天津300459 [2]东北石油大学石油工程学院,大庆163318

出　　处：《当代化工》2021年第5期1171-1175,共5页Contemporary Chemical Industry

基　　金：黑龙江省自然科学基金面上项目,富含有机质变形介质页岩气储层流体渗流机理研究(项目编号:E2016008);国家自然科学基金项目,稠油火驱过程中燃料沉积机制及其在多孔介质中的精细表征(项目编号:51904076)。

摘　　要：为了提升油藏的生产潜力,以海上N油田为研究对象,开展了室内岩心水驱转气水交替驱实验研究。长岩心注气驱替实验比短岩心能准确反映流体流动参数,因此进行了长岩心水驱转气水交替驱提高采收率的对比。实验验证了气水交替驱可保持地层压力、增强原油流动性并减缓气窜。基于室内长岩心水驱转气水交替驱实验结果,应用岩心数值模拟方法拟合含水率与采收率曲线,确定气水交替驱数值模拟参数,进而得到可靠的岩心数值模拟模型。在此基础上分析注入速度、注入周期、转驱时机及渗透率对气水交替驱开发效果的影响。结果表明:增大注入速度、增加注入周期可有效降低含水率,延长开采时间。In order to improve the production potential of oil reservoirs, an indoor core water drive to gas-water alternate flooding test was carried out by taking the offshore N oilfield as research object. Long core gas injection displacement test can reflect the fluid flow parameters more accurately than short core, so the comparison between long core water flooding and gas water alternate flooding was carried out. It was proved that alternate gas and water flooding can maintain formation pressure, enhance crude oil fluidity and slow gas channeling. Based on the test results of long core water displacement to gas-water alternate flooding, the core numerical simulation method was used to fit the water cut and recovery curve, determine the numerical simulation parameters of gas-water alternate flooding, and then obtain a reliable core numerical simulation model. On this basis, the influences of injection velocity, injection cycle, conversion time and permeability on the development effect of gas-water alternate flooding were analyzed. The results showed that increasing the injection rate and increasing the injection cycle could effectively reduce the water content and prolong the production time.

关 键 词：室内驱油实验 岩心数值模拟 气水交替 提高采收率 

分 类 号：TE341[石油与天然气工程—油气田开发工程]