摘要
含油饱和度是评价储集层流体性质的重要参数之一。该文从地化录井参数ST的校正入手,建立岩屑、井壁取心、岩心与密闭取心的地化参数校正关系,导出含油饱和度的校正公式,将岩屑、岩心、井壁取心含油饱和度数据校正到密闭取心实验室状态下。通过N5-4-检725等5口井应用实例,详细说明了校正后含油饱和度数据在实际中的应用效果,校正后的含油饱和度数据不仅应用在探井定量解释及产能预测上,还可以在开发调整井中推广应用,对地化录井技术在油田开发解释评价中的应用具有积极的促进作用。
Oil saturation is one of important parameters for the evaluation of the reservoir fluid property. Starting with the correction to the geochemical parameter, the paper set up the correction relations between geochemical parameters of cuttings, sidewall core, core and sealing core, derivated updating formulas of oil saturation, thus, correcting oil saturation data of cuttings, core, sidewall core into laboratory state of sealing core. Through five wells- N5-4-Jian and other wells, the paper illustrated the application results of the corrected oil saturation data in practice. The corrected oil saturation data, which was not only used for quantitative interpretation and productivity prediction in exploration wells, but was also used in adjusting development wells. It has positive functions in bring about an advance of geochemical mud logging used in oilfield development, interpretation and evaluation.
