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CHEN Qinglong, PU Renhai, GUO Wei, BAI Qinghua. An approach to the source rocks from the Upper Triassic Yanchang Formation in the Majiatan region on the western margin of the Ordos Basin[J]. Sedimentary Geology and Tethyan Geology, 2019, 39(4): 47-56.
Citation: CHEN Qinglong, PU Renhai, GUO Wei, BAI Qinghua. An approach to the source rocks from the Upper Triassic Yanchang Formation in the Majiatan region on the western margin of the Ordos Basin[J]. Sedimentary Geology and Tethyan Geology, 2019, 39(4): 47-56.

An approach to the source rocks from the Upper Triassic Yanchang Formation in the Majiatan region on the western margin of the Ordos Basin

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  • Received Date: September 11, 2019
  • Revised Date: October 11, 2019
  • Published Date: December 29, 2019
  • The deep lacustrine shales occur mostly in the interior of the Ordos Basin. However, there remains uncertain about how and whether they occur or have the hydrocarbon potential in the thrust zones on the western margin of the ordos Basin. The present paper gives a detailed study of thickness, horizon, distribution and hydrocarbon potential of the black shales from the Yanchang Formation on the basis of outcrops and seismic data from the Yitan-1 well and other wells in the Shigouyi geosyncline. The results of well logs, seismic horizon tracing, seismic forward modeling and pyrolytic analysis of the source rocks led us to draw the following conclusions. (1) There are still 2 to 4 beds of the black source rocks in the Yanchang Formation, Majiatan region in the central part of the thrust zone east of Qingtongxia-Guyuan fault. These black source rocks are characterized by high gamma, high time difference and low-resistivity well logs, 3 to 5 m in thickness for a single bed with a total thickness of about 20 m in the Chang-10, Chang-9, Chang-8 and Chang-7 horizons, and also with high amplitude responses. (2) The thin-bedded black shales in the Chang-10 horizon at the bottom of the Yanchang Formation in the Majiatan region are interpreted as the indicator for the distinction from the Upper and Middle Triassic strata. (3) The deep and shallow parts of the lake exhibit the "cross" distribution, isolated and discontinous with the main body of the lake basin. The Chang-10 and Chang-9 horizons are believed to be major source rocks. (4) The samples collected from the Yitan-1 well for the pyrolytic analysis indicate better to good source rocks with good hydrocarbon potential.
  • [1]
    付金华,李士祥,刘显阳,邓秀芹. 鄂尔多斯盆地上三叠统延长组长9油层组沉积相及其演化[J]. 古地理学报,2012,14(3):269-284.
    [2]
    付锁堂,邓秀芹,庞锦莲. 晚三叠世鄂尔多斯盆地湖盆沉积中心厚层砂体特征及形成机制分析[J]. 沉积学报,2010,28(6):1081-1089.
    [3]
    曾少华. 陕北三叠系延长统湖盆三角洲沉积模式的建立[J]. 石油与天然气地质,1992,13(2):229-234.
    [4]
    郭艳琴,李文厚,郭彬程,张倩,陈强,王若谷等. 鄂尔多斯盆地沉积体系与古地理演化[J]. 古地理学报,2019,21(2):293-320.
    [5]
    武富礼,李文厚,李玉宏,席胜利. 鄂尔多斯盆地上三叠统延长组三角洲沉积及演化[J]. 古地理学报, 2004, 6(3):307-315.
    [6]
    杜贵超. 鄂尔多斯盆地七里村油田延长组长62油层组沉积相特征及沉积模式[J]. 沉积与特提斯地质,2014,34(4):30-39.
    [7]
    李相博,刘化清,完颜容,魏立花,廖建波,马玉虎. 鄂尔多斯盆地三叠系延长组砂质碎屑流储集体的首次发现[J]. 岩性油气藏,2009,21(4):19-21.
    [8]
    杨华,邓秀芹. 构造事件对鄂尔多斯盆地延长组深水砂岩沉积的影响[J]. 石油勘探与开发,2013,40(5):513-520.
    [9]
    李秋朋,万友利,江琦,丁晓琪,刘曦翔,任启豪等. 鄂尔多斯盆地彬长地区长6储层成岩作用及有利成岩相带[J]. 沉积与特提斯地质,2016,36(4):21-29.
    [10]
    李慧琼,蒲仁海,王大兴,赵玉华,张杰,赵德勇. 鄂尔多斯盆地延长组地震前积反射的地质意义[J]. 石油地球物理勘探,2014,49(5):985-996.
    [11]
    张文正,杨华,李剑锋,马军. 论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用-强生排烃特征及机理分析[J]. 石油勘探与开发,2006,33(3):289-293.
    [12]
    张文正,杨华,付锁堂,昝川莉. 鄂尔多斯盆地长91湖相优质烃源岩的发育机制探讨[J]. 中国科学,2007,37(增刊玉):33-38.
    [13]
    丁熊,田景春,姚泾利,余杭航,罗安湘. 鄂尔多斯盆地延长组长9油层组三角洲砂岩沉积特征[J]. 沉积与特提斯地质, 2015,35(4):25-34.
    [14]
    姚泾利,高岗,庞锦莲,刘凤妍,柳广弟,张雪峰,等. 鄂尔多斯盆地陇东地区延长组非主力有效烃源岩发育特征[J]. 地学前缘,2013,20(2):116-124.
    [15]
    国吉安,庞军刚,王桂成,李文厚,陈全红,曹红霞. 鄂尔多斯盆地晚三叠世延长组湖盆演化及石油聚集规律[J]. 世界地质,2010,29(2):277-283,291.
    [16]
    袁伟,柳广弟,徐黎明,牛小兵. 鄂尔多斯盆地延长组7段有机质富集主控因素[J]. 石油与天然气地质,2019,40(2):326-334.
    [17]
    尹泽,刘自亮,彭楠,沈芳,谭梦琪,王玉冲等. 鄂尔多斯盆地西缘上三叠统延长组沉积相特征研究[J]. 沉积学报,2019, 37(1):163-176.
    [18]
    杨华,窦伟坦,刘显阳,张才利. 鄂尔多斯盆地三叠系延长组长7沉积相分析[J]. 沉积学报,2010,28(2):254-263.
    [19]
    张文正,杨华,杨奕华,孔庆芬,吴凯. 鄂尔多斯盆地长7优质烃源岩的岩石学、元素地球化学特征及发育环境[J]. 地球化学,2008,37(1):59-64.
    [20]
    杨华,梁晓伟,牛小兵,冯胜斌,尤源. 陆相致密油形成地质条件及富集主控因素-以鄂尔多斯盆地三叠系延长组长7段为例[J]. 石油勘探与开发,2017,44(1):12-20.
    [21]
    郭艳琴,惠磊,张秀能,魏千盛,李文厚,李百强. 鄂尔多斯盆地三叠系延长组沉积体系特征及湖盆演化[J]. 西北大学学报(自然科学版),2018,4(48):593-602.
    [22]
    赵红格. 鄂尔多斯盆地西部构造特征及演化[D]. 西安:西北大学,2003.
    [23]
    Liu C, Zhao H, Wang F, et al. Attributes of the Mesozoic Structure on the West margin of the Ordos Basin[J]. Acta Geologica Sinica,2005, 79(6):747-747.
    [24]
    李斌, 宋岩, 孟自芳, 等. 中国中部前陆盆地盆山耦合关系分析[J]. 西南石油大学学报(自然科学版),2009,31(1):23-28.
    [25]
    张进. 陕甘宁地区古生代以来的构造及演化特征研究[D]. 北京:中国地震局地质研究所,2002.
    [26]
    杨华,付金华,欧阳征健,孙六一. 鄂尔多斯盆地西缘晚三叠世构造-沉积环境分析[J]. 沉积学报,2011,29(3):427-439.
    [27]
    苏春乾,杨兴科,刘继庆,张忠义. 从贺兰山区的三叠-侏罗系论国内前陆盆地研究[J]. 岩石矿物学杂志,2004,23(4):318-326.
    [28]
    李慧琼,蒲仁海,屈红军,赵德勇. 鄂尔多斯盆地三叠系与侏罗系不整合面测井识别方法讨论[J]. 西北大学学报(自然科学版),2017,47(4):577-584.
    [29]
    付金华,郭正权,邓秀芹. 鄂尔多斯盆地西南地区上三叠统延长组沉积相及石油地质意义[J]. 古地理学报,2005,7(1):34-44.
    [30]
    朱光有,金强. 东营凹陷两套优质烃源岩层地球化学特征研究[J]. 沉积学报,2003,21(3):506-512.
    [31]
    柳广弟. 石油地质学[M]. 北京:石油工业出版社,2009.
    [32]
    李文厚,庞军刚,曹红霞,肖丽,王若谷. 鄂尔多斯盆地晚三叠世延长期沉积体系及岩相古地理演化[J]. 西北大学学报(自然科学版),2009,39(3):501-506.
    [33]
    邓秀芹,付金华,姚泾利,庞锦莲,孙勃. 鄂尔多斯盆地中及上三叠统延长组沉积相与油气勘探的突破[J]. 古地理学报, 2011,13(4):443-455.
    [34]
    马国良. 鄂尔多斯盆地马家滩油田延长组油气成藏规律研究[J]. 沉积与特提斯地质,2015,35(2):35-44.
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