蒸汽辅助重力泄油渗流机理研究

针时双水平井及直井与水平井组合蒸汽辅助重力泄油(SAGD)两种常用布井方式，利用数值模拟方法及Surfer制图软件制作出重力过程中泄油初期、高峰期及泄油后期不问泄油阶段蒸汽腔截面的温度场、压力场、剩余油饱和度场的场图，更直观、形象的描述了SAGD的蒸汽腔形成及扩展过程以及不同泄油阶段蒸汽腔形状及泄油机理，并对两种布井方式的重力泄油效果进行了比较，为SAGD技术的应用提供决策依据.

STUDY OF THE SEEP MECHANISM OF STEAM AS-SISTED GRAVITY DRAINAGE

Steam Assisted Gravity Draining(SAGD ) has been proved to be an effective way for extra heavy oil, supper heavy oil re-covery. Aiming at the commonly used two well configurations namely double horizontal wells and the combination of vertical and horizontal wells, this paper gained the maps of temperature field , pressure field , and residual oil saturation field of thesteam chamber section at the initial stage, the fastigium stage and the evening stage. These maps intuitively and visually char-acterized the forming and expanding process of the steam cham-ber and the shape and the drainage mechanism at the different drainage moments. Further more, this paper also made a com-parison between the two well configurations and these provided a theoretic foundation for the expansion of SAGD.