Prediction and controlling of combustion front are the key technology in the process of fire-flooding development of heavy oil. The radius and moving speed of combustion front in a direction can be predicted by using the data of combustion tube experiment and air injection with regular well pattern in isotropy formation. For the irregular well pattern, the locations of combustion front in different direction can be predicted by using thedata of combustion tube experiment and glue gas production. Meanwhile, this method can be seen as a theoretical foundation of combustion front regulation and control in the fire-flooding development. In the course of field test, usually, one can control the period cumulative gas production of different parts of producing well, therefore the direction and the shape of combustion front.%在稠油油藏火驱开发过程中,火线的预测与控制是矿场动态调控的关键技术.对于各方向注采井距相等的规则面积井网,可以利用室内燃烧釜实验数据和中心井注气数据预测不同阶段的火线推进速度和扩展半径；对于各方向注采井距不等的不规则井网,可以利用室内燃烧釜实验数据和生产井产气数据预测火线扩展半径,同时,这种预测方法也可以作为矿场火驱试验中调控火线的理论依据.矿场试验过程中,通常可以通过对生产井采取“控”、“关”、“引”等措施,控制不同部位生产井的阶段累积产气量,从而控制火线沿不同方向的推进速度,最终使火线形成预期形状.
展开▼
