第37卷
会第3期
2016年6月
文章编号：1001-3873(2016)030249-08
新疆石油地质
XINJIANG PETROLEUM GEOLOGY DOI:10.7657/XJPG20160301
Vol. 37, No.3 Jun.2016
塔里木盆地库车坳陷白垩系巴什基奇克组岩相古地理
马玉杰"，张荣虎”，唐雁刚"，陈戈”，莫涛"，王俊鹏”，谢彬”
（1.中国石油塔里木油田分公司勘探开发研究院，新整库尔勒841000，2.中国石油杭州地质研究院，杭州310023）要：为明确塔里木盆地库车地陷沉积着相、微相特征及其与古地理背景关系，依据露头微相观测、岩心微相描述、摘
成像测并岩相刻函、构造演化快复、沉积因素综合分析研究认为，白至系巴什基奇克组岩相古地理总体受南天山、温瘤凸起、库鲁克塔格山物源三重控制，其中克拉苏一依奇克里克冲断带西段的巴什基奇克组主要源于南天山物源，塔
秋里塔格冲断带为3特源交汇区，乌什国陷受南天山物源和温凸起物源双重控制；克拉苏一依奇克里克冲断带西段主要发育辨状河三角洲前缘中一细砂岩和扇三角洲前绿水下分流河道粉一细砂岩2类典型微相砂岩，砂体总体叠置连片展布，残余厚度150~260m；塔北隆起以扇三角洲前缘水下分流河道中一细砂岩和辨状河三角洲前缘水下分流河细-—粉砂岩况积为主，夹河口坝粉一细砂岩，砂体总体星厚层连片展市，残余厚度100-300m.白呈系已什基奇克组“满墙富砂"为库车场陷油气战略突破提供重要理论依据。
关键词调：塔里本盐地；库车墩陷；白圣系；巴什基奇克组；岩相古地理；沉积徽相
中图分类号：TE111.3
文献标识码：A
Lithofacies Paleogeography of Cretaceous Bashijiqike Formation in Kuqa Depression,
TarimBasin
MA Yujie',ZHANC Ronghur,TANG Yangang,CHEN Ge', MO Tao',WANG Junpeng,XIE Bin
(1.Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang 841000, China;
2.Hangzhou Institute of Geology, PetroChina, Hangzhou, Zhejiang 310023, China)
Abstract: To identify the characteristics of sedimentary facies and microfacies and their relationships with the paleogeographic setting, based on microfacies observation of outcrops, microfacies description of cores, characterization of imaging-logging facies, restoration of structural evolution and superimposed analysis of sedimentary elements, it is considered that Cretaceous Bashijiqike formation is generally controlled by 3 factors such as southem Tianshan mountain, Wensu swell and Kuruktag mountain in provenance. Bashijiqike formation provenance in the Kelasu thrust belt is mainly originated from southem Tianshan mountain, and that in the western part of Tabei uplift is from Wensu swell, and that in the mid-easterm part of Tabei uplift from Kuruktag mountain. Qiulitag structural belt is the intersection area of these 3 provenances and Wushi sag is controlled by both southern Taishan mountain and Wensu uplift; 2 typical sandstones such as braided delta-front mid-fine sandstone and fan-delta front underwater distributary-channel silt-fine sandstone are mainly developed in the Kelasu thrust belt, Sandbodies are superimposed and distributed continuously with the residual thickness of 150~260 m; Tabei uplift is dominated by mid-fine sandstones of fan-delta front underwater distributary-channel facies and fine-silt sandstones of braided delta-front underwater distributary-channel facies mixed with some silt-fine sanstones of river mouth bar facies. The thick sandbodies are generaily dis tributed continuously in Tabei uplift with the residual thickness of 100~300 m. The understanding as “the sandstones are distributed in the whole depression"” in Cretaceous Bashijiqike formation provides a significant theoretical basis for the breakthrough of the oil and gas strate-gy in Kuqa foreland area.
Keywords: Tarim basin; Kuqa depression; Cretaceous; Bashijiqike formation; lithofacies paleogeography; sedimentary microfacies
下白垩统巴什基奇克组是塔里木盆地库车坳陷的重要勘探目的层系之一，自1997年以来，在克拉苏一依奇克里克冲断带西段、东秋里塔格冲断带和库车坳陷南部斜坡带巴什基奇克组中，发现了克拉 2气田、大北1气田、克深气田、迪那气田、牙哈一羊塔克凝析油气田、英实46气藏等。巴什基奇克组储
收稿目期：20151127
修订月期：20160322
集层以大套厚层砂岩为主，与上覆古近系膏泥岩构成优质的储盖组合-"。从沉积相和古地理角度研究巴什基奇克组储集层发育的岩相变化和地理分布，对拓展库车坳陷白垩系巴什基奇克组的油气勘探前景具有十分重要的意义。
前人对塔里木盆地白垩系的沉积相研究认为，早
基金项目：国家973项目（2011CB201104）；国家科技重大专项（2011ZX5003-004，2016ZX05003-002，2016ZX05001002-003）作简介：马玉杰（1968-），女.黑龙江缴江人，高级T.程师，hi油地质，（Tel)0996-2172135（Email)mayj-tlm@petrochina.com.cn
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