泡沫辅助空气驱不同相态渗流规律及调整应用  

Foam-assisted air flooding different phase state seepage law and adjustment application

作　　者：沈焕文[1] 王艳玲[1] 马云成[1] 饶天利[1] 李化斌[1] 郭文娟[1] SHEN Huanwen;WANG Yanling;MA Yuncheng;RAO Tianli;LI Huabin;GUO Wenjuan(Oil Production Plant 3 of PetroChina Changqing Oilfield Company,Yinchuan Ningxia 750006,China)

机构地区：[1]中国石油长庆油田分公司第三采油厂,宁夏银川750006

出　　处：《石油化工应用》2022年第4期55-58,共4页Petrochemical Industry Application

摘　　要：泡沫辅助空气驱提高采收率技术具有泡沫封堵高渗层,气体驱替低渗层扩大波及体积的双重效果,在矿场实践中降水增油效果显著,但对储层中油、气、水三种相态渗流运移规律认识不足,对现场注采政策调整缺乏理论指导。本文通过对试验区吸气剖面、气体示踪剂测试成果认识基础上,与数值模拟和开发动态三结合研究方法,明确了纵向上气、油、水三相自上而下的赋存特征,平面上泡沫液封堵原水驱高渗部位、气体扩大低渗部位波及的渗流特征,据此规律,现场开展加大注气量,提高气液比的参数优化调整,油井新增见效率达到69.2%,自然递减下降10.0%,综合含水下降5.2%,预测最终采收率增加10.2%。The foam-assisted air flooding enhanced oil recovery technology has the dual effects of foaming high-permeability layers and gas-displacing low-permeability layers to expand the swept volume.In mine practice,the effect of precipitation and oil-increasing is significant,but it affects the oil,gas,and water in the reservoir.The three kinds of phase state seepage migration laws are not well understood,and there is no theoretical guidance for the adjustment of on-site injection and production policies.Based on the understanding of the test results of the inhalation profile and the gas tracer in the test area,this paper combines the three-phase research method of numerical simulation and development dynamics to clarify the occurrence characteristics of the three phases of gas,oil and water in the vertical direction from top to bottom.On the plane,the foam liquid blocks the seepage characteristics of the high-permeability parts of the original water flooding and the gas-enlarged low-permeability parts.According to this law,the optimization and adjustment of parameters to increase the gas injection rate and increase the gas-liquid ratio have been carried out on-site,and the new oil well efficiency has reached 69.2%,the natural decline decreased by 10.0%,the comprehensive water cut decreased by 5.2%,and the predicted final recovery rate increased by 10.2%.

关 键 词：泡沫辅助空气驱 不同相态 渗流规律 调整应用 

分 类 号：TE357.45[石油与天然气工程—油气田开发工程]