蒸汽驱过程中油藏压力的控制

Reservoir pressure control during steam drive

结合矿场实践 ,以某油藏的 10 0m井距、反九点井网的一个井组为例 ,对蒸汽驱过程中分阶段油藏压力控制进行探讨 ,以提高稠油油藏蒸汽驱的开发效果。蒸汽驱过程中对油藏要分阶段控制压力 ,保证在有效的生产压差下使蒸汽带不断扩展 ,从而高效率地驱替井间原油 ,提高了在现有的开采工艺条件下汽驱的可操作性。蒸汽驱的全过程必须要把对油藏压力的控制贯穿到方案设计中 。

Reservoir pressure control at different stages during steam drive is discussed based on a well group of 100m spacing and inverted nine spot pattern in a certain reservoir to improve development effect of steam drive in heavy oil reservoir. During steam drive, reservoir was pressure controlled at different stages to ensure the continuous expansion of steam drive zone under effective production pressure difference, which efficiently displaced interwell oil and improved the operation possibility of steam drive under present production techniques. Reservoir pressure control must be well handled through the whole project design of steam drive to ensure better steam drive efficiency.