CAJ | 학술논문

李堡油田属高凝油藏，地层能量不足，油井单井产量低，常规酸压措施有效期短。为增加地层能量，提高单井产量，开展了自生 CO2复合吞吐技术在李堡油田的应用研究。室内采用长填砂模型，利用李堡区块的高凝油饱和岩心，考察了含油饱和度、注入速度、注入量、闷井时间、岩心渗透等因素对层内自生气复合吞吐技术提高采收率的影响。结果表明：自生气体系的注入速度越小，注入量越大，含油饱和度越高，闷井时间越长，吞吐效果越好。自生气复合吞吐技术现场应用后单井！油效果显著，措施有效期超过6个月，对高凝油藏低能低产井有很好的提高采收率作用。
리보유전속고응유장，지층능량불족，유정단정산량저，상규산압조시유효기단。위증가지층능량，제고단정산량，개전료자생 CO2복합탄토기술재리보유전적응용연구。실내채용장전사모형，이용리보구괴적고응유포화암심，고찰료함유포화도、주입속도、주입량、민정시간、암심삼투등인소대층내자생기복합탄토기술제고채수솔적영향。결과표명：자생기체계적주입속도월소，주입량월대，함유포화도월고，민정시간월장，탄토효과월호。자생기복합탄토기술현장응용후단정！유효과현저，조시유효기초과6개월，대고응유장저능저산정유흔호적제고채수솔작용。
Libao Oilfield belongs to a high pour point crude reservoir,which has poor formation energy,low production rate of single well,and short validity period of acid fracturing. In order to increase the formation energy and improve the production rate of single well,the in-situ gas generation huff - n - puff technology was studied. In long sand - packed mod-els,using high pour point crude oil taken from Libao Oilfield,experiments were carried out on the effects of factors such as oil saturation,injection rate,injection volume,soak time,permeability on incremental oil recovery rate. Lab results showed that the smaller the injection flow rate was,the bigger the injection volume was,the higher the oil saturation was,the longer the soak time was,the higher the oil recovery rate was. The technology was applied in B1 - 7 well. After treatment,the oil production rate was increased significantly. Up to now,the validity period reaches more than six months. The field results showed that the technology can improve single well’s production rate in high pour point reservoir.