塔里木盆地肖尔布拉克露头区下寒武统肖尔布拉克组沉积相模式及其勘探意义<sup>&#x0002A;</sup>

doi:10.7605/gdlxb.2019.04.038

古地理学报 ›› 2019, Vol. 21 ›› Issue (4): 589-602. doi: 10.7605/gdlxb.2019.04.038

• 岩相古地理学及沉积学 • 上一篇下一篇

塔里木盆地肖尔布拉克露头区下寒武统肖尔布拉克组沉积相模式及其勘探意义^*

郑剑锋^1,2, 袁文芳³, 黄理力^1,2, 潘文庆^1,3, 乔占峰^1,2, 杨果³

1 中国石油集团碳酸盐岩储层重点实验室,浙江杭州 310023;
2 中国石油杭州地质研究院,浙江杭州 310023;
3 中国石油塔里木油田分公司,新疆库尔勒 841000

收稿日期:2018-05-21 修回日期:2018-07-03 出版日期:2019-08-01 发布日期:2019-07-23
作者简介:郑剑锋,男,1977年生,硕士,高级工程师,主要从事碳酸盐沉积和储层研究工作。E-mail: zhengjf_hz@petroChina.com.cn。
基金资助:
*国家科技重大专项(编号: 2016ZX05004002)和中国石油天然气股份有限公司项目(编号: 2016B-0402)联合资助

Sedimentary facies model and its exploration significance of the Lower Cambrian Xiaoerblak Formation in Xiaoerblak area, Tarim Basin

Zheng Jian-Feng^1,2, Yuan Wen-Fang³, Huang Li-Li^1,2, Pan Wen-Qing^1,3, Qiao Zhan-Feng^1,2, Yang Guo³

1 Key Laboratory of Carbonate Reservoir,CNPC,Hangzhou 310023,China;
2 PetroChina Hangzhou Research Institute of Geology,Hangzhou 310023,China;
3 Tarim Oilfield Company,PetroChina,Xinjiang Korla 841000,China

Received:2018-05-21 Revised:2018-07-03 Online:2019-08-01 Published:2019-07-23
About author:About the first author Zheng Jian-Feng,born in 1977,Master,is an engineer in PetroChina Hangzhou Research Institute of Geology,and is mainly engaged in researches of carbonate sedimentation and reservoir. E-mail: zhengjf_hz@petroChina.com.cn.
Supported by:
Co-funded by the National Science and Technology Major Projects(No.2016ZX05004002)and China National Petroleum Corporation Project(No.2016B-0402)

摘要/Abstract

摘要： 塔里木盆地下寒武统肖尔布拉克组储集层主要受沉积相控制,而丘滩是储集层发育的有利相带,因此明确丘滩特征及其分布规律对该地区勘探具有重要意义。以柯坪肖尔布拉克露头区肖尔布拉克组为研究对象,实测7条剖面,基于野外露头描述和薄片观察,系统分析了肖尔布拉克组沉积特征,建立了沉积相模式。露头区肖尔布拉克组厚158~178 m,主要发育层纹石、凝块石、泡沫绵层石、叠层石、核形石5种微生物白云岩和藻砂屑白云岩及粒泥白云岩,整体上为1个向上变浅的三级沉积序列。肖尔布拉克组沉积时期,研究区为发育“微生物席—丘滩—潮坪”沉积体系的缓坡型碳酸盐岩台地,沿温宿古隆起向盆地方向依次发育内缓坡、中缓坡和外缓坡。中缓坡是中高能微生物丘和藻砂屑滩的有利发育区,丘滩体厚度在70~85 m之间,滩地比达到44%~51%,进一步佐证了塔里木盆地下寒武统肖尔布拉克组白云岩领域具有良好的勘探潜力。

关键词: 塔里木盆地, 肖尔布拉克组, 沉积特征, 相模式, 白云岩

Abstract: The dolomite reservoir of the Lower Cambrian Xiaoerblak Formation in Tarim Basin is mainly controlled by sedimentary facies,in which the mounds and shoals are the potential zone of reservoir. Therefore,it is of great significance to clarify the characteristics and laws of mounds and shoals for oil exploration in this field. The Xiaoerblak area is selected as the study region and,7 geological profiles are measured in outcrops. Based on the description of the field outcrops and observation on many thin slices,the sedimentary characteristics of the Xiaoerblak Formation are systematically analyzed and the sedimentary facies model is established. The Xiaoerblak Formation in the study area is 158-178 m in thickness. It mainly contains microbiological dolomites,arenite dolomite and granule dolomite. The microbiological dolomites are divided into laminite dolomite,thrombolite dolomite,spongiostromatastromatolite dolomite,stromatolite dolomite,and oncolites dolomite. The lithofacies combination indicates that the Xiaoerblak Formation comprises one 3^rd succession that is characterized as upward shallower trend. These rocks combination show that Keping area is a carbonate ramp with “microbial mat-mound and shoal-tidal flat” sedimentary system in the depositional period of Xiaoerblak Formation. From the Wensu ancient uplift to the basin,it develops inner ramp,middle ramp and outer ramp in turn. In middle ramp,the medium-high energy mounds and shoals are distributed,with a thickness of 70-85 m and the ratio of shoals to the whole strata is up to 44%-51%. It is confirmed again that the Xiaoerblak Formation in Tarim Basin has a great potential of oil exploration.

Key words: Tarim Basin, Xiaoerblak Formation, sedimentary features, facies model, dolostone

中图分类号:

TE121.3+1

郑剑锋, 袁文芳, 黄理力, 潘文庆, 乔占峰, 杨果. 塔里木盆地肖尔布拉克露头区下寒武统肖尔布拉克组沉积相模式及其勘探意义^*[J]. 古地理学报, 2019, 21(4): 589-602.

Zheng Jian-Feng, Yuan Wen-Fang, Huang Li-Li, Pan Wen-Qing, Qiao Zhan-Feng, Yang Guo. Sedimentary facies model and its exploration significance of the Lower Cambrian Xiaoerblak Formation in Xiaoerblak area, Tarim Basin[J]. JOPC, 2019, 21(4): 589-602.

http://www.gdlxb.cn/CN/Y2019/V21/I4/589

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塔里木盆地肖尔布拉克露头区下寒武统肖尔布拉克组沉积相模式及其勘探意义*

Sedimentary facies model and its exploration significance of the Lower Cambrian Xiaoerblak Formation in Xiaoerblak area, Tarim Basin

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塔里木盆地肖尔布拉克露头区下寒武统肖尔布拉克组沉积相模式及其勘探意义^*