加密网格模型能够描述近井垂直蒸汽超覆,稠油蒸汽驱是重力泄油过程而不是驱替过程得到证实,而且模型的非封闭性边界导致蒸汽带压力与现场实际压力相似。初期生产井蒸汽吞吐的常用作业方法降低了压力,加速了蒸汽突破时间且提高了开采量。此外,在很多早期研究中应用的井网因素和单层砂岩模型并不能充分说明油田现场生产动态,利用大型非均质模型预测产量更加符合实际。非连续页岩允许原油从上部砂岩到下部砂岩大量泄油,因此上部含有的储量可能低于预测值,而下部的采收率明显增加。 Encryption grid model can describe near-vertical steam overburden, heavy-oil steam flooding is a gravity drainage process rather than a displacement process has been confirmed, and the non-closed boundary of the model led to the steam pressure with the actual field pressure is similar. Common practices for the initial production well steam huff and puff reduce stress, speed up steam breakthroughs and increase production. In addition, the well pattern and single-layer sandstone models used in many earlier studies do not adequately account for the field production dynamics in the field and it is more realistic to predict the yield using large heterogeneous models. Discontinuous shales allow oil to drain large amounts of oil from the upper sandstone to the lower sandstone, so the reserves in the upper part may be below the predicted value while the recovery in the lower part increases significantly.