【摘要】 榆树林油田是以薄砂、泥互层沉积为主,具特低渗透的复杂岩性油藏。本文针对杨大城子油层杨三组小层砂体,在利用人工合成地震记录进行细致对比基础上,对钻井、测井及地震资料进行综合分析;参照地震地质模型,提出该区杨三组岩性与反射波振幅之间存在三种对应模式:强振幅反映单层厚度>3m的厚砂层,砂岩发育;复波反映单层厚度<3m的薄砂、泥互层,砂岩较发育;中等振幅反映砂体不发育。依据此模式,以三维地震偏移剖面为主,参照Delog剖面解释结果,对杨三组（y₃）上、下部砂体分布进行了预测。经实际钻井验证,效果较好,为进一步部署开发井井位提供了依据。更多还原

【Abstract】 Yushulin oil field is a complicated lithological oil pool. It is mainly composed of thin interbed sand-shale series and has lower porosity and permeability. On the basis of detailed comparision of flagstone in y₃ group with artificially synthetic seismic record, this paper summerized out three types of patterns by a comprehensive analysis of drilling, logging and seismic data and referring to a seismic-geological model: high-amplitude represents will-developed sandstone with a single-bed thickness more than 3m; complex wave represents betterdeveloped sandstone with a single-bed thickness less than 3 m; weak-amplitude represents undeveloped sandstone. According to patterns obtained above, using 3-D migrated seismic sections and referring to interpretation of Delog sections, the distribution of sandstones in the upper and lower strata in y₃ group is predicted. The result is proved by further drilling, and offers an evidence for further design of the location of development wells.更多还原