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作 者:杨伟利[1] 王毅[1] 杨晓影 云金表[1] 蔡习尧[1] 刘忠宝[1] 解国军[1]
机构地区:[1]中石化石油勘探开发研究院,北京100083 [2]中石油渤海钻探井下作业分公司,河北任丘062552
出 处:《长江大学学报(自然科学版)》2017年第11期1-6,共6页Journal of Yangtze University(Natural Science Edition)
摘 要:在分析塔里木盆地钻井、地震、野外露头、古生物、同位素等资料的基础上,通过地层的重新厘定,以碳酸盐岩沉积体系、沉积地貌和沉积环境为核心,参考盆地周缘构造背景,编制了寒武纪各世岩相古地理图。纽芬兰世,盆地中南部发育古中央隆起,隆起北部发育潮坪-瀉胡相、陆棚相,为快速海侵下的碎屑岩沉积,经推测,南部具有相似沉积环境;第二世,满加尔坳拉槽快速沉降,形成东盆西台的古地理格局;第三世和芙蓉世沉积环境具有很好的继承性,都代表了稳定沉降背景下的格局。结合野外露头和钻井揭示,预测了寒武系玉尔吐斯组烃源岩分布,结果表明其主要分布在古中央隆起的北部广大地区,厚度一般在10~30m之间;推测古隆起南部也发育该套烃源岩。Based on the data of well drilling,seismic measurement grid,field outcrops,paleontology and isotopic data,through restipulation of strata and by taking the carbonate sedimentary system and sedimentary topographic feature and sedimentary environment as the kernel and based on the tectonic settings around the basin in Cambrian,a lithofacies paleographic map was plotted for each period of Cambrian.During Terreneuvian,there developed paleo-uplift in the mid-south of Tarim Basin,tidal flat and lagoon facies and deepwater shelf facies were developed in the north of the paleo-uplift,it was the clastic-rock sediment,it was speculated that there existed a similar sedimentary environment in the south.During the second epoch,Manjia'er aulacogen was quickly settled,the paleo-geographic pattern as a basin in the east and carbonate platform in the west came into being.During the third epoch and Furongian,there existed a good succession in sedimentary environment,they represented a pattern of stable settlement.Combined with field outcrops and well drilling result,the source rock distribution of Yurtusi Formation is predicted,the result indicates that it is mainly distributed in the wide areas in the north of the central uplift with the thickness of 10~30m,it is speculated that this set of source rocks also developed in the south of the paleo-uplift.
分 类 号:TE121.3[石油与天然气工程—油气勘探]
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