塔里木盆地孔雀河斜坡孔探1井奥陶系综合地层学

发布时间：2018-01-26 09:17

本文关键词： 划分对比笔石奥陶系孔探井塔里木盆地新疆　出处：《地层学杂志》2017年02期 　论文类型：期刊论文

【摘要】：通过笔石划分孔雀河斜坡孔探1井奥陶系生物地层序列。黑土凹组上段灰黑色泥页岩属弗洛阶—达瑞威尔阶Acrograptus ellesae带-Undulograptus austrodentatus带,具有高自然伽马特征;下段灰色灰质泥岩属特马豆克阶Adelograptus victoriae-Kiaerograputs kiaeri带,与下伏突尔沙克塔格组黄灰色泥质灰岩分界清晰。黑土凹组—却尔却克组可划分出2个Ⅱ级层序以及4个Ⅲ级层序;3个Ⅱ级层序界面分别为早奥陶世开阔陆棚相向盆地相沉积转变面、中奥陶世盆地相向晚奥陶世浅海陆棚相沉积转换面、加里东晚期—印支期多期构造运动的叠合不整合面。SQ1与SQ2层序的TST与HST体系域为优质烃源岩发育段,SQ3层序的TST体系域也发育烃源岩。
[Abstract]:The Ordovician biostratigraphic sequence of well Ordovician is divided by graptolite on the Kongquehe Slope. The Upper member of the Black Mud formation of the Black Black Shale belongs to Acrograptus. Ellesae zone-Undulograptus austrodentatus zone. It has the characteristics of high natural gamma; The grey gray mudstone in the lower section belongs to the Adelograptus victoriae-Kiaerograputs kiaeri belt of Termaduk stage. The boundary of yellowish-gray marl limestone in the Lower Futuershaketagge formation is clear. The Heituao-Chaerzek formation can be divided into two second-order sequences and four third-order sequences. The three second-order sequence interfaces are the early Ordovician open shelf facies to the basin sedimentary transformation surface, the middle Ordovician basin facies to the late Ordovician shallow sea shelf sedimentary transformation surface. The TST and HST system tracts of late Caledonian and Indosinian multi-stage tectonic movements with superimposed unconformities. SQ1 and SQ2 sequences are high quality source rocks. Source rocks are also developed in the TST system tracts of SQ3 sequences.
【作者单位】：中国石化西北油田分公司勘探开发研究院;中国石油化工股份有限公司石油勘探开发研究院;中国科学院南京地质古生物研究所资源地层学与古地理学重点实验室;中国科学院大学;
【基金】：国家重点基础研究发展计划(“973”计划)项目(2012CB214806) 国家科技重大专项(2017ZX05036)共同资助
【分类号】：P534.42;P618.13
【正文快照】： (1)国家重点基础研究发展计划(“973”计划)项目(2012CB214806)与国家科技重大专项(2017ZX05036)共同资助。奥陶系是塔里木盆地重要的油气勘探层系(漆立新,2014),部分地层单元是烃源岩(高志勇等,2011;黄继文等,2012;张水昌等,2012;云金表等,2014),分布广泛,在沙雅隆起、卡塔克

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