松辽盆地杜101井晚古生代地层划分与对比  

Late Paleozoic stratigraphic division and correlation in Well Du 101 in Songliao Basin

作　　者：万传彪[1,2,3] 孙跃武 薛云飞[1,3] 金玉东[1,3] 张昕 李倜[1,3] WAN Chuan-biao;SUN Yue-wu;XUE Yun-fei;JIN Yu-dong;ZHANG Xin;LI Ti(Institute of Exploration and Development,Daqing Oilfield Company Ltd.,Daqing 163712,Heilongjiang,China;Key Laboratory for Evolution of Past Life and Environment in Northeast Asia(Jilin University),Ministry of Education,Changchun 130026,China;Key Laboratory of Carbonate Reservoir,CNPC,Daqing 163712,Heilongjiang,China)

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]东北亚生物演化与环境教育部重点实验室(吉林大学),长春130026 [3]中国石油集团碳酸盐岩储层重点实验室大庆油田研究分室,黑龙江大庆163712

出　　处：《世界地质》2019年第4期889-899,共11页World Geology

基　　金：国家自然科学基金项目(31670215)

摘　　要：前人将杜101井1 662.2~2 200.0 m井段自下而上划分为"杜尔伯特组"和"一心组",但两组之间的自然电位(SP)、自然伽马(GR)、深感应电阻率(RILD)和中感应电阻率(RILM)曲线没有出现明显突变,应合并为一组,依据岩性自下而上可划分为3段:下段(砂砾岩段)、中段(砂砾岩-泥灰岩段)和上段(泥灰岩-粉砂岩段)。其中,上段产双壳类化石Casmogoriophora sp.、Parallelodon cf.tenuistriatus及Parallelodon sp.,腕足类化石Spiriferella persaranaena、Spiriferella sp.、Lamnimargus peregrina、Stenoscisma cf.zhesiensis及Athyis sp.等,地质时代为中二叠世。该井段岩性和古生物特征,可与松辽盆地西缘乌兰浩特-孙吴地区的哲斯组对比,因此,将松辽盆地西缘的哲斯组引入盆地内,作为松辽盆地井下哲斯组的次层型剖面。The strata in the depth of 1 662.2 ~ 2 200.0 m in Well Du 101 were divided and named as Duerbert and Yixin formations in ascending order.However,there is no sharp change between the two units on well logs,such as the spontaneous potential( SP),gamma ray( GR),deep and medium induction resistivity( RILD,RILM).Thus,they should be combined into one formation.Based on the lithology,three members can be identified from bottom to top,i.e.the lower glutenite member,the middle glutenite-marlstone member,and the upper marlstone-siltstone member.Abundant marine fossils have been discovered in the upper member,including bivalves( Casmogoriophora sp.,Parallelodon cf.tenuistriatus,Parallelodon sp.) and brachiopods( Spiriferella persaranaena,Spiriferella sp.,Lamnimargus peregrina,Stenoscisma cf.zhesiensis,Athyis sp.),which indicates Middle Permian age.Since the lithology and fossils in Well Du 101 can be correlated to those of Zhesi Formation outcropped in the Ulanhot-Sunwu area on the western margin of Songliao Basin,the Zhesi Formation is used in Songliao Basin,and the strata in Well Du 101( depth 1 662.2 ~ 2 200.0 m) is suggested as a para-stratotype of the Zhesi Formation in the basin.

关 键 词：松辽盆地 杜101井 二叠系 哲斯组 腕足化石 一心组 杜尔伯特板岩 

分 类 号：P534.4[天文地球—古生物学与地层学] Q913.84[天文地球—地质学]