鄂尔多斯盆地东缘临兴地区太原组桥头砂岩层序地层及沉积特征

doi:10.11743/ogg20180107

摘要/Abstract

摘要： 鄂尔多斯盆地东缘临兴地区太原组桥头砂岩的沉积特征及其在层序格架中的位置，决定了储层类型和圈闭范围的评价。结合地震、测井、露头和岩心资料，通过层序界面和海泛面的识别，将太原组划分为1个完整的长期旋回（LSC1）和4个完整的中期旋回（MSC1，MSC2，MSC3，MSC4）。其中桥头砂岩位于MSC1下降半旋回中，以粗粒和中-粗粒的石英砂岩为主；粒度概率累积曲线呈典型双向水流特征；岩心见典型潮汐水流沉积构造，发育羽状、块状、粒序和复合层理等；剖面上砂体呈透镜状，平面上呈平行岸线条带状分布特征。综合分析认为桥头砂岩为潮汐水道及障壁砂坝沉积，属海相成因优质储层。该砂体呈北东-南西平行岸线方向分布，气井钻遇砂体均见高产气流。圈闭范围受砂体边界控制，呈现岩性圈闭的特征。太原组桥头砂岩层序划分和沉积特征的研究，对临兴地区和鄂尔多斯盆地东缘致密气的勘探开发具有指导意义。

关键词: 沉积相, 桥头砂岩, 层序地层, 太原组, 鄂尔多斯盆地

Abstract: Sedimentary characteristics and location within sequence framework of the Qiaotou sandstone of the Taiyuan Formation in Linxing area, eastern margin of Ordos Basin, determine the reservoir type and trap area.The Taiyuan Formation is divided into one complete long-term cycle (LSC1) and four complete medium-term cycles (MSC1, MSC2, MSC3, MSC4) based on identification of sequence boundaries and flooding surfaces by using seismic, logging, outcrop and outcrop data.The Qiaotou sandstone is within the descending half cycle of MSC1 and is dominated by coarse-grained and coarse-to-medium grained quartz sandstones.The cumulative probability curve of the grain size is typical of the two-way flow.Core observation reveals typical tidal current sedimentary structure and pinnate, massive, graded and composite bedding.The sand bodies show lenticular geometry on section and appear as bands parallel with shorelines on map.The Qiaotou sandstone is believed based on a comprehensive analysis to be tidal channel and barrier bar deposits, which are quality reservoirs of marine facies.The sand body parallels shoreline in northwest-southwest direction and all wells that penetrate it test high gas flow.The area of traps are controlled by the sand body boundary and show the characteristics of lithologic traps.This study is of great significance for guiding exploration and development of tight sand gas in Linxing area, eastern margin of Ordos Basin.

Key words: sedimentary facies, Qiaotou sandstone, sequence stratigraphy, Taiyuan Formation, Ordos Basin

中图分类号:

TE121.3

吴鹏,高计县,郭俊超,等. 鄂尔多斯盆地东缘临兴地区太原组桥头砂岩层序地层及沉积特征[J]. 石油与天然气地质, 2018, 39(1): 66-76. doi: 10.11743/ogg20180107 Wu Peng,Gao Jixian,Guo Junchao,et al. Sequence stratigraphy and sedimentary characteristic analysis of Qiaotou sandstone of Tayuan Fm in Linxing area, eastern margin of Ordos Basin[J]. Oil & Gas Geology, 2018, 39(1): 66-76. doi: 10.11743/ogg20180107

参考文献

[1] 桂学智.河东煤田晚古生代聚煤规律与煤炭资源评价[M].太原:山西科学技术出版社,1993:1-200. Gui Xuezhi.Late Paleozoic coal accumulation and evaluation of coal resources of Hedong Coalfield in Shanxi[M].Taiyuan:Shanxi Science and Technology Press,1993:1-200.
[2] 武法东,陈钟惠,张守良,等.华北晚古生代含煤盆地层序地层初探[J].中国煤田地质,1994,6(1):11-18. Wu Fading,Chen Zhonghu,Zhang Shouliang,et al.Primary study on the sequence stratigraphy of coalbearing strata of upper Paleozoic in north China[J].China Coal Geology,1994,6(1):11-18.
[3] 郭英海,刘焕杰,权彪,等.鄂尔多斯地区晚古生代沉积体系及古地理演化[J].沉积学报,1998,16(3):44-51. Guo Yinghai,Liu Huanjie,Quan Biao,et al.Late Paleozoic sedimentary system and paleogeographic evolution of Ordos area[J].Acta Sedimentologica Sinica,1998,16(3):44-51.
[4] 樊太亮,郭齐军,吴贤顺.鄂尔多斯盆地北部上古生界层序地层特征与储层发育规律[J].现代地质,1999.13(1):32-36. Fan Tailiang,Guo Qijun,Wu Xianshun.Features of sequence stratigraphy and distribution regularities of reservoir in upper Paleozoic of north Ordos Basin[J].Geoscience,1999,13(1):32-36.
[5] 陈洪德,侯中健,田景春,等.鄂尔多斯地区晚古生代沉积层序地层学与盆地构造演化研究[J].矿物岩石,2001,21(3):16-22. Chen Hongde,Hou Zhongjian,Tian Jingchun,et al.Study on sequence stratigraphy of deposits and tectono-sedimentary evolution in Ordos Basin during late Paleozoic[J].Journal of Mineral Petrol,2001,21(3):16-22.
[6] 沈玉林,郭英海,李壮福,等.鄂尔多斯盆地北部苏里格庙含油气区上古生界层序地层研究[J].地球学报,2007,28(1):72-78. Shen Yulin,Guo Yinghai,Li Zhuangfu,et al.Sequence stratigraphy study in upper Paleozoic of Suligemiao oil and gas-bearing area,north Ordos Basin[J].Acta Geoscientica Sinica,2007,28(1):72-78.
[7] 沈玉林,郭英海,李壮福,等.鄂尔多斯盆地东缘本溪组-太原组层序地层特征[J].地球学报,2009,30(2):187-193. Shen Yulin,Guo Yinghai,Li Zhuangfu,et al.Sequence stratigraphy of Benxi-Taiyuan formation in eastern Ordos Basin[J].Acta Geoscientica Sinica,2009,30(2):187-193.
[8] 郭书元,张广权,陈舒薇,等.鄂尔多斯地区东北部大牛地气田晚石炭-早二叠世地层划分[J].石油与天然气地质,2009,30(6):697-705. Guo Shuyuan,Zhang Guangquan,Chen Shuwei,et al.Stratigraphic division of Upper Carboniferous to Lower Permian from Daniudi Gas Field in east-northern of Ordos area[J].Oil & Gas Geology,2009,30(6:697-705).
[9] 翟爱军,邓宏文,邓祖佑.鄂尔多斯盆地上古生界层序地层与储层预测[J].石油与天然气地质,1999,20(4):336-340. Zhai Aijun,Deng Hongwen,Deng Zuyou.Sequence stratigraphy and reservoir prediction of upper Paleozoic in Ordos Basin[J].Oil & Gas Geology,1999,20(4):336-340.
[10] 李宝芳,温显端,李贵东.华北石炭、二叠系高分辨层序地层分析[J].地学前缘,1999,6(增刊):81-94. Li Baofang,Wen Xianduan,Li Guidong.High resolution sequence stratigraphy analysis on the Permo-Carboni-ferrous in north China platform[J].Earth Science Frontiers,1999,6(Supple):81-94.
[11] 姜烨,李宝芳.鄂尔多斯东北部太原组上部灰岩段高分辨率层序地层分析[J].煤田地质与勘探,2002,30(3):5-8. Jiang Ye,Li Baofang.High-resolution sequence analysis on limestone member,upper Taiyuan formation,northeastern Ordos[J].Coal Geology & Exploration,2002,30(3):5-8.
[12] 郑荣才,文华国,梁西文.鄂尔多斯盆地上古生界高分辨率层序地层分析[J].矿物岩石,2002,22(4):66-74. Zheng Rongcai,Wen Huaguo,Liang Xiwen.Analysis of sigh-resolution sequence stratigraphy for upper Paleozoic in Ordos Basin[J].Journal of Mineral Petrol,2002,22(4):66-74.
[13] 陈钟惠,张年茂,张守良,等.鄂尔多斯盆地东缘晚古生代含煤岩系沉积体系和聚煤作用的时空演化[J].地球科学,1989,14(4):357-366. Chen Zhonghui,Zhang Nianmao,Zhang Shouliang,et al.The time and spatial evlotion of sedimentary systems and coal accumulation centre in Late Palaezoic coal-bearing measures on the eastern margin of Ordos Basin[J].Earth Science-Journal of China University of Geosciences,1989,14(4):357-366.
[14] 王华,陈钟惠,张守良,等.保德矿区太原组桥头砂岩沉积特征与煤聚集[J].煤田地质与勘探,1995,23(2):1-6. Wang hua,Chen Zhonghui,Zhang Shouliang,et al.The sedimentary characteristics of Qiaotou Sandstone body and its relation to coal-accumulation of Taiyuan Formation in Baode Mine[J].Coal Geology & Exploration,1995,23(2):1-6.
[15] 姜烨,李宝芳,王绍昌,等.鄂尔多斯陆表海层序地层中的低位域沉积-以太原组上段桥头砂岩为例[J].现代地质,2001,15(4):425-430. Jiang Ye,Li Baofang,Wang Shaochang,et al.Low stand system tract sandstone in the sequenceof epicontinental sea in Ordos:a case of Qiaotou sandstone in Upper Taiyuan Formation[J].Geoscience,2001,15(4):425-430.
[16] 李勇,汤达祯,许浩,等.河东煤田北部典砂岩体沉积演化特征[J].天然气工业,2013,33(2):22-27. Li Yong,Tang Dazhen,Xu Hao,et al.Sedimentary evolution of typical sandstones distributed in northern Hedong Coalfield[J].Natural Gas Industry,2013,33(2):22-27.
[17] 郝蜀民,李良,尤欢增.大牛地气田石炭-二叠系海陆过渡沉积体系与近源成藏模式[J].中国地质,2007,34(4):606-611. Hao Shumin,Li liang,You Huanzeng.Permo-carboniferous paralic deposition alsystems in the Daniudi gas field and its near-source box-type gas accumulation forming model[J].Geology in China,2007,34(4):606-611.
[18] 王付斌,李良,陈亚平.大牛地气田太原组沉积模式[J].天然气工业,2007,27(12):49-51. Wang Fubin,Li Liang,Chen Yaping.Depositional model of Taiyuan Formation in Daniudi gas field,Ordos Basin[J].Natural Gas Industry,2007,27(12):49-51.
[19] 庞军刚,李文厚,杨友运,等.鄂尔多斯盆地子洲地区上古生界沉积体系特征[J].天然气工业,2007,27(12):58-61. Pang Jianjun,Li Wenhou,Chen Yaping,et al.Futures of upper Paleozoic depositional system in Zizhou region,Ordos Basin[J].Natural Gas Industry,2007,27(12):58-61.
[20] 冯文立,黄思静,黄培培,等.鄂尔多斯盆地东北部太原组砂岩储层特征[J].岩性油气藏,2009,01:89-93. Feng Wenli,Huang Sijing,Huang Peipei,et al.Sandstone reservoir characteristics of Taiyuan Formation in northeastern Ordos Basin[J].Lithologic Reservoirs,2009,21(1):89-93.
[21] 郑文波,胡向阳,陈舒薇,等.鄂尔多斯盆地大牛地气田上古生界沉积演化特征[J].沉积学报,2015,33(2):306-313. Zheng Wenbo,Hu Xiangyang,Chen Shuwei,et al.Characteristics of sedimentary evolution in the Upper Paleozoic,Daniudi gas field,Ordos Basin[J].Acta Sedimentologica Sinica,2015,33(2):306-313.
[22] 付锁堂,田景春,陈洪德,等.鄂尔多斯盆地晚古生代三角洲沉积体系平面展布特征[J].成都理工大学学报:自然科学版,2003,30(3):236-241. Fu Suotang,Tian Jingchun,Chen Hongde,et al.The delta depositional system distribution of Late Paleozoic era in the Ordos Basin[J].Journal of Chengdu University of Technology:Natural Science Edition,2003,30(3):236-241.
[23] 宋雪娟,李壮福,黄金连.神木-双山地区太原组桥头砂岩沉积特征及演化[J].中国煤炭地质,2011,23(4):14-18. Song Xuejuan,Li Zhuangfu,Huang Jinlian.Sedimentary characteristics and evolution of Qiaotou sandstone,Taiyuan Formation in Shenmu-Shuangshan area,Ordos Basin[J].Coal Geology of China,2011,23(4):14-18.
[24] 兰朝利,张君峰,陶维祥,等.鄂尔多斯盆地神木气田太原组沉积特征与演化[J].地质学报,2011,85(4):533-542. Lan Chaoli,Zhang Junfeng,Tao Weixiang,et al.Sedimentary characteristics and evolution of the Upper Carboniferous Taiyuan Formation,Shenmu gasfield,northeastern Ordos Basin[J].Acta Geologica Sinica,2011,85(4):533-542.
[25] 李勇,汤达祯,许浩,等.鄂尔多斯盆地东缘"翘板" 支点影响下的含煤地层发育特征[J].煤炭学报,2012,37(S2),378-382. Li Yong,Tang Dazhen,Xu Hao,et al.Characterization of coal bearing strata under influence of "seesaw" fulcrum in east margin of Ordos Basin[J].Journal of China Coal Society,2012,37(S2):406-410.
[26] Li Y,Tang D,Wu P,et al.Continuous unconventional natural gas accumulations of Carboniferous-Permian coal-bearing strata in the Linxing area,northeastern Ordos basin,China[J].Journal of Natural Gas Science and Engineering,2016,36,314-327.
[27] 刘焕杰,贾玉如,龙耀珍,等.海相成煤论进展[J].沉积学报,1992,10(3):47-56. Liu Huanjie,Jia Yuru,Long Yaozhen,et al.Progress in coal-forming theory of marine facies[J].Acta Sedimentologica Sinica,1992,10(3):47-56.
[28] 刘焕杰,桑树勋,施健.成煤环境的比较沉积学研究-海南岛红树林潮坪与红树林泥炭[M].江苏徐州:中国矿业大学出版社,1997:1-203. Liu Huanjie,Sang Shuxun,Shi Jian.Comparative sedimentology research on coal forming environments-mangrove tidal flats and mangrove peats in the Hainan island of South China Sea[M].Xuzhou Jiangsu:China University of Mining and Technology Press,1997:1-203.
[29] 张鹏飞,邵龙义,代世锋.华北地台晚古生代海侵模式雏议[J].古地理学报,2001,3(1):15-24. Zhang Pengfei,Shao Longyi,Dai Shufeng.Discussions on the transgression model of the Late Palaeozoic in the North China Platform[J].Journal of Palaeogeography,2001,3(1):15-24.
[30] 张鹏飞.含煤岩系沉积学研究的几点思考[J].沉积学报,2003,21(1):125-128. Zhang Pengfei.Some considerations on coal measures sedimentology[J].Acta Sedimentologica Sinica,2003,21(1):125-128.