摘要
针对涠洲12-1油田涠四段油藏注天然气开发中气油比快速上升、气窜现象严重等问题,通过实验研究天然气-水控制气窜的效果及其驱替机理。利用细管装置测定原油的最小混相压力,对比天然气驱与天然气-水交替驱的实验效果;同时,利用可视化平面模型分析驱替机理及剩余油分布特征。研究结果表明:该油田天然气驱混相压力为36.35 MPa,属于非混相驱替,采用天然气-水交替驱的方式可以有效减缓气油比上升速度,增加驱油效率。
The development of natural gas in Wei-4 section of Weizhou 12-1 oil field is facing a serious problem of rapid increase in gas-oil ratio and gas channeling phenomenon,so the effect of controlling gas channeling by natural gas-water and its displacement mechanism are studied by experiments.The minimum mixed pressure is measured by the thin-tube device,the natural gas drive is compared with the natural gas-water alternating drive by indoor physics simulation experiment,and the micro-mechanism of the oil is studied by using the visual plane model to analyze the distribution characteristics of the remaining oil.The results show that the minimum mixed pressure of the oil field is 36.35 MPa,which belongs to the non-mixed phase-drive,and the use of natural gas-water alternating drive can effectively slow down the rising speed of gas-oil ratio and increase the oil-repellent efficiency.
作者
魏峰
李跃林
马帅
王丹翎
策旭瑞
郑冰洋
WEI Feng;LI Yuelin;MA Shuai;WANG Danling;CE Xurui;ZHENG Bingyang(Zhanjiang Branch of CNOOC(China)Co.Ltd.,Zhanjiang Guangdong 524057,China;Shenzhen Branch of CNOOC(China)Co.Ltd.,Shenzhen Guangdong 518054,China;State Key Laboratory of Reservoir Geology and Development Engineering,Southwest Petroleum University,Chengdu 610500,China)
出处
《重庆科技学院学报（自然科学版）》
CAS
2021年第2期12-15,共4页
Journal of Chongqing University of Science and Technology：Natural Sciences Edition
基金
国家科技重大专项“CO_(2)泡沫控制气窜关键技术研究”(2016ZX05016-001-003)
中海油湛江分公司项目“涠洲12-1油田涠四段注气开发效果评价及生产优化研究”(CCL2019ZJFN0782)。
关键词
涠洲油田
天然气驱
气窜
混相程度
水气交替WAG技术
微观机理
Weizhou Oilfield
natural gas flooding
gas channeling
degree of miscibility
alternate WAG technology
microscopic mechanism
