稀油油藏注空气强化热驱提高采收率实验研究  

Experimental Research on Enhanced Oil Recovery Using Air Injection Enhanced Thermal Flooding in Light Oil Reservoir

作　　者：黄丽娟 李茂恒 裴树峰 陈志伟 周小淞 李宗法 刘家旭 HUANG Lijuan;LI Maoheng;PEI Shufeng;CHEN Zhiwei;ZHOU Xiaosong;LI Zongfa;LIU Jiaxu(School of Petroleum Engineering,Yangtze University,Wuhan,Hubei 430100,China;Hubei Key Laboratory of Oil and Gas Drilling and Production Engineering(Yangtze University),Wuhan,Hubei 430100,China;Research Institute of Petroleum Engineering Technology,Shengli Oilfield Company,Sinopec,Dongying,Shandong 257000,China;Postdoctoral Research Station,Shengli Petroleum Administration Bureau,Dongying,Shandong 257000,China;Oil Production Technology Research Institute,Tuha Oilfield Company,Shanshan,Xinjiang 838200,China)

机构地区：[1]长江大学石油工程学院,湖北省武汉市430100 [2]油气钻采工程湖北省重点实验室(长江大学) [3]中国石化胜利油田分公司石油工程技术研究院 [4]中国石化胜利石油管理局博士后科研工作站 [5]中国石油吐哈油田公司采油工艺研究院

出　　处：《钻采工艺》2025年第2期109-114,共6页Drilling & Production Technology

基　　金：国家自然科学基金项目“枯竭油气藏原位制氢过程中井筒内燃爆特性及风险研究”(编号:52404016);湖北省自然科学基金青年项目“氢气—天然气混合物高温高压条件下燃烧和爆炸特性研究”(编号:2024AFB322)。

摘　　要：注空气采油技术是提高原油采收率的重要方式之一。针对水驱后小井距稀油油藏注空气开发的热效应问题,开展了注空气强化热驱提高采收率实验研究。实验结果表明,燃烧管含油饱和度、注气量、点火温度是影响热驱前缘形成和稳定的关键因素和必要条件。在含油饱和度30%~45%、气体加热温度300℃和注气强度4~6 L/min的条件下,可以形成较为稳定的300~400℃的高温反应前缘,采收率达到74%。此外,在较低的注空气强度下,火烧前缘不稳定,通过注富氧空气有利于原油的氧化反应,同时提高火线温度,但反应消耗的油量较多,降低了实际采收率。油田实际应用过程中,需要在低渗、低含油饱和度地层内维持较高的空气通量和火线温度,以实现强化热驱的效果。研究成果可为现场实施注空气强化热驱工艺提供依据。Air injection technology is one of the important ways to enhance oil recovery.Aiming at the thermal effect of air injection development in light oil reservoirs with small well spacing after water flooding,an experimental study on enhanced recovery by air injection enhanced thermal flooding is carried out.The experimental results show that the oil saturation of the combustion tube,the amount of air injection,and the ignition temperature are the key factors and necessary conditions for affecting the formation and stability of the thermal flooding front.Under the conditions of oil saturation of 30%-45%,gas heating temperature of 300℃,and gas injection intensity of 4-6 L/min,a relatively stable high-temperature reaction front of 300-400℃can be formed,and the recovery rate is 74%.In addition,at lower air injection rates,the fire front is unstable.Injecting oxygen-rich air is beneficial for the oxidation reaction of crude oil while increasing the fire front temperature.However,the reaction consumes more oil,reducing the actual recovery rate.In the actual application process of oilfields,it is necessary to maintain a high air flux and fire front temperature in low permeability and low oil saturation formation to achieve the effect of enhanced thermal flooding.The research results can provide a basis for implementing air injection-enhanced thermal flooding technology in the field.

关 键 词：稀油油藏 注空气 热驱 燃烧管实验 点火温度 注气强度 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程]