松辽南部构造—岩性油气藏识别技术及应用

松辽南部大面积、低丰度油气藏目前是我国增储上产重点地区,面临的主要问题是低幅度、小断裂、薄砂层,油藏类型复杂多变,以构造岩性复合油藏为主.针对控制圈闭的低、小、薄问题,采用有针对性技术,即应用真三维地震解释和变速成图解决低幅度、应用相干体和地层倾角检测解决小断裂、应用地震相控制下的多参数岩性反演解决薄砂层,最终经综合评价优选井位.经钻井验证发现一批构造岩性复合油气藏,取得明显效果,表明该项技术实用有效,具有推广价值.

Recognition technique and application of structure-lithology pool in the south of Songliao Basin

In the south of Songliao Basin,large-area and low-abundance pool is the key area for increasing reserves and production.At present,it is facing the main problems of low abundance,small fault,thin sand layer,having complex and levity reservoir and relying mainly on composite structure-lithology reservoir.The pertinent techniques for controlling the problems of low,little and thin trap were adopted,including the technigues of very 3D-seismic interpretation and velocity-varying mapping accounted for low-amplitude traps,both of coherence and dip-layer checking for small fault,multi-parameter lithology inversion for thin sand layer under control of seismic facies. Finally,optimum well location is sought after appraised synthetically.It has gotten obvious results in verifying and finding out one batch of composite structure-lithology reservoir through drilling.It indicates that this technology is practical and effective and worth of popularizing.