天然气地质学

鄂尔多斯盆地上古生界浅水砂体沉积模拟实验研究

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  • 1.中国石油杭州地质研究院,浙江 杭州 310023;
    2.中国石油集团碳酸盐岩储层重点实验室,浙江 杭州 310023;
    3.长江大学地球科学学院,湖北 武汉 430100
朱永进(1984-),男,江苏徐州人,工程师,博士,主要从事储层沉积学研究.E-mail:zhuyj_hz@petrochina.com.cn.

收稿日期: 2014-10-08

  修回日期: 2014-11-20

  网络出版日期: 2015-05-10

基金资助

国家自然科学基金“叠覆式浅水三角洲形成机理及内部结构解剖”(编号:41172106)|国家“十二五”科技重大专项课题“大型油气田及煤层气开发”(编号:2011ZX05004-002)联合资助.

Experiments on Shallow-Lacustrine Deltaic Sandstone in the Ordos Basin(Upper Paleozoic),Central China

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  • 1.PetroChina Hangzhou Institute of Geology,Hangzhou 310023,China;
    2.PetroChina Key Lab of Carbonate Reservoir,Hangzhou 310023,China;
    3.College of Geoscience,Yangtze University,Wuhan 430100,China

Received date: 2014-10-08

  Revised date: 2014-11-20

  Online published: 2015-05-10

摘要

鄂尔多斯盆地上古生界(山西组—下石盒子组盒8段)发育了大面积展布的浅水湖盆三角洲成因砂体,是当前天然气勘探的重点层系之一。针对当前气田勘探开发过程中存在的储集砂体成因机制不清及缺乏直观参照模型指导内部结构解剖的问题,调研目的层系区域构造演化、古地貌、沉积体系物源及沉积物构成等地质条件基础上,运用沉积物理模拟方法,将原型地质条件转化为物理模型并设计模拟实验参数,利用水槽物理模拟装置完成了模拟实验研究。研究设计了一个“多物源、浅水、敞流型”变态模型,通过控制水流量、加沙量、地形坡降、活动底板沉降量及湖水位升降等参数,再现了大面积浅水三角洲体系沉积演化过程,并采用双向密集切片技术开展沉积体系近源—中部—远源特征分析。实验结果表明:湖平面的升降及不同沉积物源间相互叠置是浅水湖盆三角洲大面积连片展布的主要因素,同时充足的沉积物供给及稳定合适的沉降速率也起到重要推动作用|浅水三角洲前缘并非类似于传统三角洲具有一个相对统一的前积区,而更可能是一个“同源不同期”朵叶体叠加的复合体。对模拟实验结果与地下真实砂体的可对比性也进行讨论,并指出了模型借鉴过程中可能存在的问题。

本文引用格式

朱永进,尹太举,沈安江,刘玲利,刘忠保 . 鄂尔多斯盆地上古生界浅水砂体沉积模拟实验研究[J]. 天然气地球科学, 2015 , 26(5) : 833 -844 . DOI: 10.11764/j.issn.1672-1926.2015.05.0833

Abstract

Interval from the Shanxi Formation to member 8 of Lower Shihezi Formation in the Upper Paleozoic,Ordos Basin,central China,is one of the most important exploration targeted strata,which develops large area of shallow lacustrine deltaic sandstone and bears giant natural gas source.This study investigates the reservoir sandstone development and trys to build a physical model to perform sandstone internal structure analysis in an experimental basin equipped with a subsiding floor.A distorted model characterized by multi-sources,shallow-water and open system,is established which is integrated with tectonic evolution,palaeo-geomorphology,sediment sources and related components and so on.Through the adjusting of experimental parameters,such as inflow water volume,sediment supply,gradient,subsidence value and fluctuation of lake-level etc.during each stage of the experiments,we can reproduce and investigate multi-source big area shallow-lacustrine deltaic deposition.And we use double-direction intensive cross sections to discuss different characters of shallow water deltaic deposits at the position of near-source,middle part and distal.The results indicate that lake-level fluctuation and interplay of multi-direction sources are main controls during the development of large area shallow-lacustrine deltaic deposits.Meanwhile,both abundant sediment supply and suitable subsidence ratio also play an important role in this process.Shallow lacustrine delta front is not similar to traditional deltas with relative uniform foresets,but has complicated internal architecture.Finally,we also compare the physical simulation results with the real subsurface sedimentary strata and point out potential problems.

参考文献

[1]Coleman  J M,Wright L D.Variability of modern river deltas[J].Gulf Coast Association of Geological Societies Transactions,1973,23:33-36.
[2]Porebski  S J,Steel R J.Deltas and sea-level change[J].Journal of Sedimentary Research,2006,76(3):390-403.
[3]Postma G.An analysis of the variation in delta architecture[J].Terra Nova,1990,2(2):124-130.
[4]Ma Jinwen,Liu Zhongbao,Yin Taiju,et al.Sedimentary simulation of Xujiahe Formation and depositional mechanism of large area sandstone[J].Acta Sedimentologica Sinica,2012,30(1):101-111.[马晋文,刘忠保,尹太举,等.须家河组沉积模拟实验及大面积砂岩成因机理分析[J].沉积学报,2012,30(1):101-111.]
[5]Zhu Yongjin,Zhang Changmin,Yin Taiju.Characteristics of superimposed shallow lacustrine delta and its experimental simulation[J].Geological Science and Technology Information,2013,32(3):59-66.[朱永进,张昌民,尹太举.叠覆式浅水三角洲沉积特征与沉积模拟[J].地质科技情报,2013,32(3):59-66.]
[6]Zhao Hanqing.A sedimentary scheme for a large leaf-like delta in Songliao Basin[J].Petroleum Geology & Oilfield Development in Daqing,1987,6(4):1-9.[赵翰卿.松辽盆地大型叶状三角洲沉积模式[J].大庆石油地质与开发,1987,6(4):1-9.]
[7]Zou Caineng,Zhao Wenzhi,Zhang Xingyang,et al.Formation and distribution of shallow-water deltas and centralbasin sandbodies in large open depression lake basins[J].Acta Geologica Sinica,2008,82(6):813-825.[邹才能,赵文智,张兴阳,等.大型敞流坳陷湖盆浅水三角洲与湖盆中心砂体的形成与分布[J].地质学报,2008,82(6):813-825.]
[8]Zhang Changmin,Yin Taiju,Zhu Yongjin,et al.Shallow-water deltas and models[J].Acta Sedimentologica Sinica,2010,28(5):933-944.[张昌民,尹太举,朱永进,等.浅水三角洲沉积模式[J].沉积学报,2010,28(5):933-944.]
[9]Li Jian,Luo Xia,Shan Xiuqin,et al.Natural gas accumulation in the Upper Paleozoic of Ordos Basin,China[J].Petroleum Exploration & Development,2005,32(4):54-59.[李剑,罗霞,单秀琴,等.鄂尔多斯盆地上古生界天然气成藏特征[J].石油勘探与开发,2005,32(4):54- 59.]
[10]Xi Shengli,Li Wenhou,Wen Xinshe,et al.Sedimentary characteristics of shallow water delta of the Lower Permian Taiyuan Formation in Shenmu area,Ordos Basin[J].Journal of Palaeogeography,2009,11(2):187-194.[席胜利,李文厚,刘新社,等.鄂尔多斯盆地神木地区下二叠统太原组浅水三角洲沉积特征[J].古地理学报,2009,11(2):187-194.]
[11]Li Jie,Chen Hongde,Lin Liangbiao,et al.Genesis and distribution pattern of shallow water delta sandbodies in member 8 of Lower Shihezi Formation in the northwest of Ordos Basin [J].Journal of Chengdu University of Technology:Science & Technology Edition,2011,38(2):132-139.[李洁,陈洪德,林良彪,等.鄂尔多斯盆地西北部盒8段浅水三角洲砂体成因及分布模式[J].成都理工大学学报:自然科学版,2011,38(2):132-139.]
[12]Li Shutong,Wang Qi,Zhong Jiaai,et al.The genesis of sandbody in the shallow delta from Chang 81of Jiayuan area in Ordos Basin[J].Nature Gas Geoscience,2013,24(6):1102-1108.[李树同,王琪,仲佳爱,等.鄂尔多斯盆地姬塬地区长81浅水三角洲砂体成因[J].天然气地球科学,2013,24(6):1102-1108.]
[13]Zhang Chunsheng.Clastic Sedimentary Simulation Technology[M].Beijing:Petroleum Industry Press,2003:41-171.[张春生.碎屑岩沉积模拟技术[M].北京:石油工业出版社,2003:41-171.]
[14]Lai Zhiyun,Zhou Wei.Experimental formation and development of lobate and birdfoot deltas[J].Acta Sedimentologica Sinica,1994,12(2):37-41.[赖志云,周维.舌状三角洲和鸟足状三角洲形成及演变的沉积模拟实验[J].沉积学报,1994,12(2):37-41.]
[15]Zhang Chunsheng,Liu Zhongbao,Shi Dong,et al.Physical simulation of formation process in distributary channels and debouch bars in delta[J].Earth Science Frontiers,2000,7(3):168-175.[张春生,刘忠保,施冬,等.三角洲分流河道及河口坝形成过程的物理模拟[J].地学前缘,2000,7(3):168-175.]
[16]Kim W,Paola C,Voller V R,et al.Experimental measurement of the relative importance of controls on shoreline migration[J].Journal of Sedimentary Research,2006,76(2):270-283.
[17]Kim W,Paola C.Long-period cyclic sedimentation with constant tectonic forcing in an experimental relay ramp [J].Geology,2007,35(4):331-334.
[18]Muto T,Swenson J B.Autogenic attainment of large-scale alluvial grade with steady sea- level fall:An analog tank-flume experiment [J].Geology,2006,34(3):161-164.
[19]Hickson T A,Sheets B A,Paola C,et al.Experimental test of tectonic controls on three- dimensional alluvial facies architecture[J].Journal of Sedimentary Research,2005,75(4):710-722.
[20]He Xiaoyuan,Liu Chiyang,Wang Jianqiang,et al.Palaeotectonics of the Late Paleozoic in Ordos Basin[J].Journal of Palaeogeography,2011,13(6):677-686.[贺小元,刘池阳,王建强,等.鄂尔多斯盆地晚古生带古构造[J].古地理学报,2011,13(6):677-686.]
[21]Qu Hongjun,Ma Qiang,Gao Shengli,et al.Controls of Provenance and depositional facies on sandbody distributions of the Upper Paleozoic in southeast Ordos Basin[J].Acta Sedimentologica Sinica,2011,29(5):825-834.[屈红军,马强,高胜利,等.物源和沉积相对鄂尔多斯盆地东南部上古生界砂体展布的控制[J].沉积学报,2011,29(5):825-834.]
[22]Fan Aiping,Zhao Juan,Yang Renchao,et al.Pore structure of reservoir rocks in Shan1 and He 8 members,the eastⅡblock of Sulige Gasfield[J].Nature Gas Geoscience,2011,22(3):482-487.[樊爱萍,赵娟,杨仁超,等.苏里格气田东二区山1段、盒8段储层孔隙结构特征[J].天然气地球科学,2011,22(3):482-487.]
[23]Chen Quanhong,Li Wenhou,Hu Xiaolin,et al.Tectonic setting and provenance analysis of Late Palaeozoic sedimentary rocks in Ordos Basin[J].Acta Geologica Sinica,2012,86(7):1150-1162.[陈全红,李文厚,胡孝林,等.鄂尔多斯盆地晚古生代沉积岩源区构造背景及物源分析[J].地质学报,2012,86(7):1150-1162.]
[24]Zhang Manlang,Li Xizhe,Gu Jiangrui,et al.Sequence division and evolution of Upper Paleozoic in the Ordos Basin[J].Acta Sedimentologica Sinica,2009,27(2):289-298.[张满郎,李熙喆,谷江锐,等.鄂尔多斯盆地上古生界层序地层划分及演化[J].沉积学报,2009,27(2):289-298.]

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