吐哈盆地红台地区辫状河三角洲沉积体系研究
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摘要
通过对研究区内11口探井的岩心进行观察分析,结合粒度特征、测井电性特征及地震属性等相关资料,认为研究区主要发育2种沉积相:辫状河三角洲和滨浅湖。三间房组底部的红色泥岩段主要发育滨浅湖相;从三间房组S4砂层组到七克台组的中下部均发育辫状河三角洲相。在三间房组S1—S4砂层组和七克台组Q1—Q2砂层组辫状河三角洲平原亚相和前缘亚相详细研究的基础上,建立了适合工区的辫状河三角洲沉积相模式,平原亚相进一步划分出辫状河道、河漫滩、心滩和河漫沼泽4种沉积微相;前缘亚相分为水下辫状分流河道、水下分流间湾、河口坝3种微相。
Through the core analysis of 11 exploration wells in research area,combined with the study of size characteristics,electric characteristics,seismic attribute,it is believed that there are two types of sedimentary facies: braided river delta and shore-shallow lake.The shore-shallow lake facies developed in the red mudstone section of the bottom of Sanjianfang Formation and the braided river delta developed from the S4 sands of Sanjianfang Formation to middle and lower part of Qiketai Formation.On the basis of detailed research of the braided river delta plain subfacies and front subfacies in the S1-S4 sands of Sanjianfang Formation and the Q2-Q1 sands of Qiketai Formation,we established the sedimentary facies model of braided river delta in the area.The braided river delta plain subfacies can be divided into four kinds of depositional microfacies: braided channel,flood plain,piont bat and flood swamp.And the front subfacies of braided river delta can be further divided into three types of depositional microfacies: underwater braided distributary channel,underwater distributary interchannel and mouth bar.
Through the core analysis of 11 exploration wells in research area,combined with the study of size characteristics,electric characteristics,seismic attribute,it is believed that there are two types of sedimentary facies: braided river delta and shore-shallow lake.The shore-shallow lake facies developed in the red mudstone section of the bottom of Sanjianfang Formation and the braided river delta developed from the S4 sands of Sanjianfang Formation to middle and lower part of Qiketai Formation.On the basis of detailed research of the braided river delta plain subfacies and front subfacies in the S1-S4 sands of Sanjianfang Formation and the Q2-Q1 sands of Qiketai Formation,we established the sedimentary facies model of braided river delta in the area.The braided river delta plain subfacies can be divided into four kinds of depositional microfacies: braided channel,flood plain,piont bat and flood swamp.And the front subfacies of braided river delta can be further divided into three types of depositional microfacies: underwater braided distributary channel,underwater distributary interchannel and mouth bar.
引文
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[7]肖明国,安志渊,曹少芳,等.准噶尔盆地石南31井区下白垩统清一段湖泊辫状河三角洲沉积体系[J].地层学杂志,2008,32(4):381-388.Xiao Mingguo,An Zhiyuan,Cao Shaofang.Lake-braided river deltadepositional systems of the member 1 of the Lower CretaceousQingshuihe Formation at the Well Shinan 31 in the Jungger Basin[J].Journal of Stratigraphy,2000,32(4):381-388.
[8]毛立华,赵良金,李中超,等.濮城油田沙河街组辫状河三角洲储层隔夹层研究[J].断块油气田,2008,15(6):21-24.Mao Lihua,Zhao Liangjin,Li Zhongchao,et al.Study on interbeds ofbraided river delta reservoir in Shahejie Formation of Pucheng Oilfield[J].Fault-Block Oil&Gas Field,2008,15(6):21-24.
[9]周丽清,吴胜和,熊琦华,等.吐哈盆地WM油田辫状河三角洲前缘砂体分析[J].沉积学报,2000,18(2):248-252.Zhou Liqing,Wu Shenghe,Xiong Qihua,et al.Analysis of sandbodiesin the braided delta front,WM oilfield,Turpan-Hami Basin[J].ActaSedimentologica Sinica,2000,18(2):248-252.
[10]王家豪,姚光庆,赵彦超.浅水辫状河三角洲发育区短期基准面旋回划分及储层宏观特征分析[J].沉积学报,2004,22(1):87-94.Wang Jiahao,Yao Guangqing,Zhao Yanchao.Study on identificationof short-term base-level cycle and macroscopic distribution ofreservoirs in shallow-water braided delta[J].Acta SedimentologicaSinica,2004,22(1):87-94.
[2]袁明生,牛仁杰,焦立新,等.吐哈盆地前陆冲断带地质特征及勘探成果[J].新疆石油地质,2002,23(5):376-379.Yuan Mingsheng,Niu Renjie,Jiao Lixin,et al.Geologic features andexplorative achievements in foreland thrust belt,Turpan-Hami Basin[J].Xinjiang Petroleum Geology,2002,23(5):376-379.
[3]李勇,邵磊.吐哈盆地侏罗系沉积特点及油气资源[J].西北大学学报:自然科学版,2004,34(6):698-702.Li Yong,Shao Lei.Sedimentary environments and petroleum resourceof Jurassic rock in the Turpan Basin[J].Journal of NorthwestUniversity:Natural Science Edition,2004,34(6):698-702.
[4]袁波,陈世悦,夏雨.煤层在中国陆相盆地地层层序划分中的应用:以吐哈盆地红台地区中侏罗统为例[J].天然气地球科学,2008,19(6):810-815.Yuan Bo,Chen Shiyue,Xia Yu.An example of coal bed as thestratigraphic sequence border in continental basin of China:taking theMiddle Jurassic of Hongtai Area,Tuha Basin for example[J].NaturalGas Geoscience,2008,19(6):810-815.
[5]陈煦,李新峰,曾朝润,等.吐哈盆地台北凹陷非构造圈闭的有利探区[J].新疆石油地质,2005,26(1):10-12.Chen Xu,Li Xinfeng,Zeng Chaorun,et al.Non-structural traps andfavorable prospecting areas in Taibei Sag,Tuha Basin[J].XinjiangPetroleum Geology,2005,26(1):10-12.
[6]李雷寿,黄建廷,陈旋,等.红台气田中侏罗统油气藏特征及成藏模式[J].断块油气田,2008,15(3):10-13.Li Leishou,Huang Jianting,Chen Xuan,et al.Characteristics andaccumulation patterns of Middle Jurassic reservoirs in Hongtai GasField[J].Fault-Block Oil&Gas Field,2008,15(3):10-13.
[7]肖明国,安志渊,曹少芳,等.准噶尔盆地石南31井区下白垩统清一段湖泊辫状河三角洲沉积体系[J].地层学杂志,2008,32(4):381-388.Xiao Mingguo,An Zhiyuan,Cao Shaofang.Lake-braided river deltadepositional systems of the member 1 of the Lower CretaceousQingshuihe Formation at the Well Shinan 31 in the Jungger Basin[J].Journal of Stratigraphy,2000,32(4):381-388.
[8]毛立华,赵良金,李中超,等.濮城油田沙河街组辫状河三角洲储层隔夹层研究[J].断块油气田,2008,15(6):21-24.Mao Lihua,Zhao Liangjin,Li Zhongchao,et al.Study on interbeds ofbraided river delta reservoir in Shahejie Formation of Pucheng Oilfield[J].Fault-Block Oil&Gas Field,2008,15(6):21-24.
[9]周丽清,吴胜和,熊琦华,等.吐哈盆地WM油田辫状河三角洲前缘砂体分析[J].沉积学报,2000,18(2):248-252.Zhou Liqing,Wu Shenghe,Xiong Qihua,et al.Analysis of sandbodiesin the braided delta front,WM oilfield,Turpan-Hami Basin[J].ActaSedimentologica Sinica,2000,18(2):248-252.
[10]王家豪,姚光庆,赵彦超.浅水辫状河三角洲发育区短期基准面旋回划分及储层宏观特征分析[J].沉积学报,2004,22(1):87-94.Wang Jiahao,Yao Guangqing,Zhao Yanchao.Study on identificationof short-term base-level cycle and macroscopic distribution ofreservoirs in shallow-water braided delta[J].Acta SedimentologicaSinica,2004,22(1):87-94.
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