阿克库勒地区三叠系砂体类型及分布模式
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摘要
通过对阿克库勒地区岩心、钻井及地震资料的分析,对三叠系进行体系域级别的沉积特征分析。识别出辫状河三角洲、湖泊和湖底扇3种沉积相,7种亚相,水上分流河道、水下主分支河道、侧缘分支河道、河口坝、补给水道、辫状沟道,远端席状砂7种砂体类型。确定了不同时期砂体分布特征,在此基础上建立了浅水型辫状河三角洲、坡折型辫状河三角洲-湖底扇、正常辫状河三角洲3种砂体分布模式。认为古地貌对区内砂体分布起重要控制作用。
Based on the analysis of core,logging,and seismic data,the sedimentation characteristics are studied based on the systems tracts stratigraphic framework of Triassic system in Akekule Area.Three sedimentary facies including braided river delta,lake,sublacustrine fan,and seven subfacies are recognized.There are seven kinds of sand bodies;they are distributary channel sands,chief subaqueous distributary channel sands,subordinate subaqueous distributary channel sands,mouth bar sands,feeder channel sands,braided channel sands,and distal sheet sands.The distributions of sand bodies in different periods are identified,and three models for the distribution of sand bodies,which are braided river delta of shallow gentle slope,braided river delta with slope break zone-sublacustrine fan,and normal braided river delta,are established.The paleogeomorphology plays an important role in the distribution of sand bodies.
Based on the analysis of core,logging,and seismic data,the sedimentation characteristics are studied based on the systems tracts stratigraphic framework of Triassic system in Akekule Area.Three sedimentary facies including braided river delta,lake,sublacustrine fan,and seven subfacies are recognized.There are seven kinds of sand bodies;they are distributary channel sands,chief subaqueous distributary channel sands,subordinate subaqueous distributary channel sands,mouth bar sands,feeder channel sands,braided channel sands,and distal sheet sands.The distributions of sand bodies in different periods are identified,and three models for the distribution of sand bodies,which are braided river delta of shallow gentle slope,braided river delta with slope break zone-sublacustrine fan,and normal braided river delta,are established.The paleogeomorphology plays an important role in the distribution of sand bodies.
引文
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[2]张希明,刘青芳.塔北地区辫状三角洲沉积特征及油气勘探意义[J].石油勘探与开发,1999,26(1):21-24.Zhang Ximing,Liu Qingfang.Petroleum Exploration and Development,1999,26(1):21-24.
[3]蒲仁海,何发歧,袁丽珍,等.阿克库勒凸起南部辫状河三角洲砂体尖灭圈闭预测[J].石油与天然气地质,1999,20(3):224-227.Pu Renhai,He Faqi,Yuan Lizhen,et al.Oil&Gas Geology,1999,20(3):224-227.
[4]郭建华,刘辰生,朱锐.阿克库勒地区三叠系层序地层学及储集砂体成因类型[J].沉积学报,2007,25(2):169-176.Guo Jianhua,Liu Chensheng,Zhu Rui.Acta Sedimentologica Sinica,2007,25(2):169-176.
[5]李坤,赵锡奎,张小兵,等.塔里木盆地阿克库勒凸起油气输导体系类型与演化[J].地质科学,2007,42(4):766-778.Li Kun,Zhao Xikui,Zhang Xiaobing,et al.Chinese Journal of Geology,2007,42(4):766-778.
[6]朱美衡,郭建华,伍永田,等.阿克库勒地区三叠系层序地层及对储集砂体的控制作用[J].西安石油大学学报:自然科学版,2007,22(5):1-5.Zhu Meiheng,Guo Jianhua,Wu Yongtian,et al.Journal of Xi'an ShiyouUniversity:Natural Science,2007,22(5):1-5.
[7]周永昌,杨国龙.塔里木盆地阿克库勒地区油气地质特征及勘探前景[J].石油学报,2001,22(3):1-5.Zhou Yongchang,Yang Guolong.Acta Petrolei Sinica,2001,22(3):1-5.
[8]贾承造.中国塔里木盆地构造特征与油气[M].北京:石油工业出版社,1997.Jia Chengzao.Structural characteristics and oil&gas of Tarim basin[M].Beijing:Petroleum Industry Press,1997.
[9]Graham S A,Hendrix M S,Wang L B,et al.Collisional successor basinsof western China:Impact of tectonic inheritance on sand composition[J].Geological Society of American Bulletin,1993,105(3):323-324.
[10]Middleton G V,Hampton M A.Sediment gravity flow:Mechanics offlow and deposition[C]//Middleton G V M,Bouma A H,ed.Turbiditesand Deep Water Sedimentation.Anaheim:SEPM Pacific Sec.ShortCourse Notes,1973:1-38.
[11]Lowe D R.Sediment gravity flows:II,Depositional models with specialreference to the deposits of high-density turbidity currents[J].Journal ofSedimentary Research,1982,52(1):279-297.
[12]方爱民,李继亮,侯泉林.浊流及相关重力流沉积研究综述[J].地质论评,1998,44(3):270-280.Fang Aimin,Li Jiliang,Hou Quanlin.Geological Review,1998,44(3):270-280.
[13]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.Zou Caineng,Zhao Wenzhi,Zhang Xingyang,et al.Acta GeologicaSinica,2008,82(6):813-825.
[14]李元昊,刘池洋,独育国,等.鄂尔多斯盆地西北部上三叠统延长组长8油层组浅水三角洲沉积特征及湖岸线控砂[J].古地理学报,2009,11(3):265-274.Li Yuanhao,Liu Chiyang,Du Yuguo,et al.Journal of Palaeogeography,2009,11(3):265-274.
[15]黄克难,詹家祯,邹义声,等.新疆库车河地区三叠系和侏罗系沉积环境及古气候[J].古地理学报,2003,5(2):197-208.Huang Kenan,Zhan Jianzhen,Zou Yisheng,et al.Journal ofPalaeogeography,2003,5(2):197-208.
[16]刘辰生,田永强,郭建华.阿克库勒地区三叠系储集层成岩作用[J].新疆石油地质,2005,26(1):62-64.Liu Chensheng,Tian Yongqiang,Guo Jianhua.Xinjiang PetroleumGeology,2005,26(1):62-64.
[17]王根长.塔里木盆地碎屑岩储层基本特征[J].石油实验地质,2001,23(1):62-66.Wang Genchang.Petroleum Geology and Experiment,2001,23(1):62-66.
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