细分韵律层方法及其应用

Method and its application of subdividing rhythmic layering

针对胜二区沙二段7～8砂层组特高含水期开发状况复杂、调整效果变差等问题,对厚油层开展了细分韵律层研究。根据韵律层地质特征和开发特点,进行了井网重组,减少了层间干扰,提高了油藏采收率,形成了特高含水期韵律层研究及井网重组的基本模式。

According to the problems of complex development situation and poor adjustment effect in the Es 2 7～8 of Sheng 2 area in extrahigh watercut period, subdividing rhythmic layering are researched in major thick pays. Based on the characteristics of the geology and development of the rhythmic layering, well pattern is reformed with the results of reducing interlayer interference and enhancing the recovery efficiency, and the basic mode of rhythmic layering research and well pattern reformation in extrahigh watercut period is formed.