松辽盆地北参1井深层地层划分与对比

北参1井是北安地区目前钻遇下白垩纺最全的一口参数井，为建立北安地区深层标准剖面以便与松辽盆地深层地层、西北部、东北部的一些外围盆地相关层位进行时代对比，采用氢氟酸-盐酸冷处理方法对52块样品进行处理，在12块岩心样品中获得了孢粉化石。依据古生物岩性资料，北参1井深层601.5-3691.0m井段自下而上可划分为51个小层，4个组，分别为上侏罗统或下白垩统火石岭组、下白垩统沙河子组、营城组和登娄库组。依据北参1井火石岭组岩性特征提出火石岭组二分的方案。将下部碎屑岩夹煤层划分为火石岭组一段，将上部中基性火山岩夹碎屑岩划分为火石岭组二段。火石岭组二分性在松辽盆地北部任11井、杜22井等许多井均有体现。

Discussion on Deep Stratigraphic Correlation and Division of Beican-1 Well in Songliao Basin

Beican 1 well is now a best entire parametric well drilling Low Cretaceous in Beian area. In order to establishing the deep stratigraphic key section in Beian area, comparing stratigraphic age between the deep strata in Songliao Basin and the related strata in the peripheral basins of northwest and northeast areas to Songliao Basin, adopting HF HCl cold handling methods to 52 samples, spore and pollen fossils were found in the 12 samples among them. Based on the palaeontologic and lithological data, Beican 1 well hole depth from 601 5 m to 3 691 0 m has been divided into 50 rocks of 4 formations: Huoshiling Formation of Upper Jurassic or Lower Cretaceous,Shahezi Formation,Yengcheng Formation and Denglouku Formation of Lower Cretaceous. Based on lithological characteristics of Huoshiling Formation in Beican 1 well,the Formation is divided into two members: the clastic rocks with interbedded coal in lower part is first member, middle basic volcanic rocks with interbedded clastic rocks in upper part is second member. Existence of two types were proved in Ren11 well and Du22 well in Songliao Basin.