H稠油油藏典型井组注蒸汽驱参数优化数值模拟研究

我国西部H浅层稠油油藏，平均埋深160m．属于边缘氧化型稠油油藏。针对该油藏逐步进入注蒸汽生产的中后期．开采难度加大，递减加快，开发效益下降等现状，选取典型井组并利用数值模拟方法对其进行蒸汽驱的开发方案设计与指标预测。数值模拟结果符合油田开发实际。研究表明，开展间歇注汽（间歇时间90小间歇注汽量80m^3/d）对改善汽驱效果，提高采收率具有一定的积极的作用。

Numerical Simulation Research on Parameter Optimization of Steam-flood in Typical Well Group of H Heavy Oil Reservoir

H reservoir in west China, with average buried depth of 160 m, is a typical edge-oxygenated heavy oil reservoir. In allusion to the actualities that the reservoir has come into the metaphase and anaphase of steam-flood production, the difficulty of exploitation is increasing, the decrease by degrees is expediting and the benefit of exploitation is descending, a typical well group is chosen; its design of exploitation projects and index forecasting of steam-flood are engaged with numerical simulation method. The simulated results accords with the reality of the oilfield exploitation. The research indicates that intermittent steam-injection (120 days, 80 m~3 / d ) is confirmed to be of positive action to ameliorate the effect of steam-flood production and enhance oil recovery to a certain degree.