CAJ | 학술논문

边远、低渗透油井生产时,产量少、压力和生产压差小,液面恢复极慢,一般采用捞油法采油.根据油井的产液能力预测井筒内液面恢复过程,进而确定合理的捞油工作制度,从而解决了目前捞油井工作制度凭经验,缺少理论指导的问题.研究表明地层压力越低、采液指数越小,液面上升高度及其变化率也会减小,捞油周期相对延长,相同时间内的捞油量也会减少.
변원、저삼투유정생산시,산량소、압력화생산압차소,액면회복겁만,일반채용로유법채유.근거유정적산액능력예측정통내액면회복과정,진이학정합리적로유공작제도,종이해결료목전로유정공작제도빙경험,결소이론지도적문제.연구표명지층압력월저、채액지수월소,액면상승고도급기변화솔야회감소,로유주기상대연장,상동시간내적로유량야회감소.
Remote low-permeability oil wells features in low productivity, low pressure and small production pressure difference, and small liquid level build-up. So fishing-oil methods are generally adopted for oil production. According to liquid production capacity, the wellbore liquid-level during the recovery process can be predicted. A reasonable working system for fishing oil can further be deter-mined. So the problem of no theoretical guidance for the working system is solved. Research shows that when the formation pressure gets lower, fluid productivity indexes will be smaller, the height and rate of change in the increase of liquid level will be reduced, the oil-fishing cycle will be extended, and the fishing oil will drop within the same period of time.