摘要
目前,油田已进入高含水阶段,继续水驱提高采收率的潜力不大。为了解决这个问题,应用弱凝胶调驱体系驱油提高原油采收率。实验用均质光刻玻璃模型和非均质光刻玻璃模型模拟天然岩心,通过弱凝胶调驱体系驱油实验,将光学显微镜与微观驱油成相软件相结合,观察光刻玻璃模型的驱油过程及如何提高采收率,并对驱替后剩余油分布类型进行分析。结果表明,剩余油主要以膜状、盲端、柱状、油滴剩余油为主。其中,均质模型的采收率提高了14.36%,非均质模型的采收率提高了8.06%。研究证明了弱凝胶调驱体系驱油的可行性,这也有助于推广弱凝胶调驱体系的现场应用。
Now that the oil field has entered a high water cut stage,there is little potential for continued water flooding to improve recovery.In order to solve this problem,weak oil gel flooding system was used to drive oil to improve crude oil recovery.In the experiment,a homogeneous photolithographic glass model and a heterogeneous photolithographic glass model were used to simulate the natural core.The oil-displacement experiment of the weak gel modulation and flooding system was used to combine the optical microscope and microscopic oil displacement phase formation software to observe the photolithographic glass model.The flooding process and how to improve the recovery factor,and analyze the remaining oil distribution types after displacement.The results show that the remaining oil is mainly film-shaped and blind-end remaining oil.Among them,the recovery rate of the homogeneous model increased by 14.36%,and the recovery rate of the heterogeneous model increased by 8.06%.The research proves the feasibility of weak gel flooding system,which also helps to promote the field application of weak gel flooding system.
作者
张继红
相建昌
ZHANG Ji-hong;XIANG Jian-chang(Northeast Petroleum University,Petroleum Engineering College,Daqing 163318,China)
出处
《化学工程师》
CAS
2020年第4期34-38,共5页
Chemical Engineer
基金
国家自然科学基金项目51274070(凝胶与化学剂段塞式多轮次交替注入调驱技术应用研究)。
