蒸汽驱模型的特征分析及合理模型的选择方法

近 30年来 ,国内外油藏专家相继建立了许多稠油油藏蒸汽驱生产动态预测模型。通过调研国内外大量文献 ,从中筛选出 16种具有代表性的蒸汽驱模型 ,对其特征进行了简要分析。按驱油机理将这些模型分为压差驱动型、蒸汽超覆型和重力泄油型 ;按其计算时是否需要油田实际生产历史数据 ,将其分为半经验型和解析型。针对我国稠油油藏的特点 ,根据油藏地质条件、驱油机理和开发历史 ,提出了合理模型的选择原则和方法 ,并推荐出相应的模型来预测蒸汽驱开采的生产动态。

Characteristic analysis and reasonable selection of steam flooding models for heavy oil reservoirs

Many steam flooding models for predicting the performances of the steam flooding for the heavy oil reservoirs have also been developed in the recent 30 years. A great deal of papers was studied and sixteen typical steam flooding models were selected from these models. According to the steam flooding mechanism, these models may be classified into three types of the pressure differential driving model, steam override model, and gravity drainage model. According to the calculation methods,these models may also be classified into two kinds of the semi experiential model and analytical model. The selection principles of the reasonable models for the heavy oil reservoirs in China were proposed, and some models for predicting the oil production performances of steam flooding were recommended, according to the geology conditions,driving mechanism and development history of heavy oil reservoirs of China.