吴起油田白土沟油区长91油藏分布规律

Research on Distribution of Chang 91 Oil Reservoirin Baitugou Block of Wuqi Oilfield

白土沟油区作为延安组、延长组合采区,长9油藏开发动用较差,其油藏分布规律认识不清,制约了油田的高效开发。为弄清白土沟油区长91油藏分布规律,本次研究通过试油、试采等生产动态资料标定测井曲线,建立了长91油藏含油性下限标准,确定了油藏有效厚度,系统分析了长91油藏特征与分布规律,为该区下一步开发调整和对策研究提供重要依据。

The Baitugou block is main producing area of combined mining of Yan’an formation and Yanchang formation in Wuqi Oilfield.The law of reservoir distribution is not clear,which has restricted the efficient development of the oilfield.In order to research on distribution of chang91 oil reservoir,through well testing data to demarcate logging.The chang91 reservoir lower limit is established.The effective thickness of chang 91 reservoir is accurately interpreted.The oil reservoir characteristics and the distribution of Chang91 oil reservoir are studied systematically,which provide key basis for later development and adjustment of this area.