塔东地区上奥陶统层序地层特征
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摘要
通过大量的地震、钻井、录井、测井等资料分析,针对塔里木东部地区(简称塔东地区)上奥陶统进行了层序地层和沉积学方面的研究,结果表明,塔东地区上奥陶统可识别出1个二级层序、3个三级层序,自下而上分别是层序SQ1、SQ2和SQ3。层序SQ1识别出TST体系域,为一套深水盆地沉积,发育深水盆地、浊流沉积;层序SQ2可三分为LST、TST和HST体系域,LST体系域发育海退背景下的陆架边缘三角洲沉积,TST体系域为快速水进期,发育海相泥岩沉积,HST发育高水位滨岸沉积;SQ3发育浅海沉积,主要为三角洲—滨岸沉积体系。地层层序发育和沉积相分布受控于构造运动、沉积物源供给和相对海平面升降3个因素。3套层序的划分明确了塔东地区上奥陶统潜在的源岩层、储层和盖层的分布,其中层序SQ1为有利的烃源岩层、SQ2陆架边缘三角洲是潜在的有利储层,SQ3发育的滨岸砂岩为已经证实的油气藏。
Based upon the seismic,drilling,wireline logging data and others from various data sources,this paper studied the sequence stratigraphy and sedimentary facies of the Upper Ordovician in East Tarim Basin.The results suggest that the Upper Ordovician deposits consist of one 2 nd-order sequence and three 3 rd-order sequences,SQ1,SQ2 and SQ3 from bottom to top.The sequence of SQ1 is a transgressive system tract,consisting of deep basin sediments and turbidites.The sequence SQ2 can be further divided into three system tracts,i.e.the LST,TST and HST.The LST consists of shelf edge deltas upon a regression background.The TST is resulted from a fast transgression stage,in which prevailed marine mudstone sedimentation.The HST consists of high stand shoreface deposits.The SQ3 sequence is dominated by shallow marine sedimentation,characterized mainly by deltaic and shoreface sediments.Sequence stratigraphy and sedimentation of the region are controlled by the joint action of tectonic movement,sediment supply and eustatic fluctuation.In the sequence of SQ1,there developed high quality source rocks.The SQ2 sequence is considered a potential reservoir and the SQ3 sequence has been proved a good reservoir for petroleum accumulation.
Based upon the seismic,drilling,wireline logging data and others from various data sources,this paper studied the sequence stratigraphy and sedimentary facies of the Upper Ordovician in East Tarim Basin.The results suggest that the Upper Ordovician deposits consist of one 2 nd-order sequence and three 3 rd-order sequences,SQ1,SQ2 and SQ3 from bottom to top.The sequence of SQ1 is a transgressive system tract,consisting of deep basin sediments and turbidites.The sequence SQ2 can be further divided into three system tracts,i.e.the LST,TST and HST.The LST consists of shelf edge deltas upon a regression background.The TST is resulted from a fast transgression stage,in which prevailed marine mudstone sedimentation.The HST consists of high stand shoreface deposits.The SQ3 sequence is dominated by shallow marine sedimentation,characterized mainly by deltaic and shoreface sediments.Sequence stratigraphy and sedimentation of the region are controlled by the joint action of tectonic movement,sediment supply and eustatic fluctuation.In the sequence of SQ1,there developed high quality source rocks.The SQ2 sequence is considered a potential reservoir and the SQ3 sequence has been proved a good reservoir for petroleum accumulation.
引文
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[20]任康旭,肖中尧,张丽娟,等.塔里木盆地志留系层序地层特征及其勘探意义[J].海相油气地质,2011,16(1):20-25.
[21]韩杰,江杰,潘文庆,等.塔中西部奥陶系桑塔木组底界灰岩段的识别及沉积学意义[J].天然气地球科学,2014,25(4):490-497.
[22]万梨,侯明才,傅恒,等.塔河南上奥陶统桑塔木组沉积环境分析[J].成都理工大学学报,2007,34(2):128-134.
[23]高志勇,张水昌,郭宏莉,等.塔里木盆地满加尔凹陷西北缘上奥陶统铁热克阿瓦提组海相砂体类型与储集性[J].古地理学报,2009,11(4):413-424
[24]张云龙,蒲仁海,云露,等.塔里木顺托果勒地区柯坪塔格组下段勘探新发现及其启示[J].地质论评,2013,59(2):300-314.
[25]刘豪,王英民,王媛.浅海陆棚环境下沉积坡折带及其对局部强制海退体系域的控制[J].沉积学报,2011,29(5):906-916.
[26]Octavian Catuneanu.Principles of Sequence Stratigraphy[M].Amsterdan:Elsevier,2006.
[27]许志琴,李思田,张建新,等.塔里木地块与古亚洲/特提斯构造体系的对接[J].岩石学报,2011,27(1):1-22.
[28]赵宗举.全球海平面变化指标及海相构造层序研究方法[J].石油学报,2015,36(3):262-273.
[29]郭彦如,赵振宇,徐旺林,等.鄂尔多斯盆地奥陶系层序地层格架[J].沉积学报,2014,32(1):44-60.
[30]张光亚,刘伟,张磊,等.塔里木克拉通寒武纪—奥陶纪原型盆地、岩相古地理与油气[J].地学前缘,2015,22(3):269-276.
[31]杨兵,夏浩东,杨欣杰,等.晚古生代冰期研究进展[J].地质科技情报,2016,35(2):140-151.
[32]葛祥英,牟传龙,周恳恳,等.湖南晚奥陶世凯迪晚期—赫南特期沉积相及岩相古地理[J].沉积学报,2014,32(1):8-17.
[33]王远翀,梁薇,牟传龙,等.渝东南_黔北地区赫南特期冰川事件的沉积响应[J].沉积学报,2015,33(2):232-241.
[34]Delabroye A,Vecoli M.The end-Ordovician glaciation and the Hirnantian Stage:A global review and questions about Late Ordovician event stratigraphy[J].Earth-Science Reviews,2010,98(3/4):269-282.
[35]景秀春.塔里木盆地奥陶纪台地相区牙形石及寒武—奥陶系界线[D].北京:中国地质大学,2009.
[36]江大勇,郝维城,白顺良,等.新疆塔里木盆地晚奥陶世—早石炭世地层划分对比研究新突破[J].北京大学学报:自然科学版,2001,37(04):529-536.
[37]蔡志慧.塔里木盆地东北缘早古生代造山带的造山过程及对塔里木盆地的影响[D].中国地质科学院,2010:127-133.
[38]程日辉,王璞珺,孙晓猛,等.库鲁克塔格地区奥陶系层序地层与海平面变化[J].大地构造与成矿学,2006(3):283-292.
[2]李玉胜,谢传礼,邓兴梁,等.英买34、35井区志留系柯坪塔格组储层特征及其控制因素[J].中国地质,2009,36(5)1087-1098.
[3]于靖波,李忠,杨柳,等.塔中北斜坡鹰山组深埋岩溶型储层刻画及分布规律[J].石油学报,2016,37(3):299-310.
[4]张学丰,胡文瑄,张军涛,等.塔里木盆地下奥陶统白云岩化流体来源的地球化学分析[J].地学前缘,2008,15(2):80-89.
[5]张丽娟,范秋海,朱永峰,等.塔北哈6区块奥陶系油藏地质与成藏特征[J].中国石油勘探,2013,(2):2-12.
[6]张凤奇,王震亮,赵雪娇,等.库车坳陷迪那2气田异常高压成因机制及其与油气成藏的关系[J].石油学报,2012,33(5):739-747.
[7]周延钊,鲁雪松,刘华,等.库车前陆乌什凹陷东部构造—岩性油气藏储层物性及含油性主控因素[J].天然气地球科学,2016,27(6):994-1002.
[8]陈强路,赵欣,储呈林,等.塔里木盆地东北部中—上奥陶统沉积物源与构造背景相关性分析[J].地学前缘,2015,22(1):53-66.
[9]王恕一,黄继文,蒋小琼.塔里木盆地上奥陶统沉积及古地理特征[J].石油实验地质,2006,28(3):236-242.
[10]赵宗举,吴兴宁,潘文庆,等.塔里木盆地奥陶纪层序岩相古地理[J].沉积学报,2009,27(5):939-954.
[11]黄继文,顾忆,丁勇,等.塔里木盆地北部地区上奥陶统烃源条件[J].石油与天然气地质,2012,33(6):853-858.
[12]赵宗举,潘文庆,张丽娟,等.塔里木盆地奥陶系层序地层格架[J].大地构造与成矿学,2009,33(1):175-188.
[13]张师本,高琴琴,黄智斌,等.塔里木盆地东部地区晚奥陶世碎屑岩地层划分与对比[C]∥中国古生物学会第25届学术年会论文摘要集.北京:2009.
[14]林水城,傅恒,曾毅.塔里木盆地玉北地区奥陶系层序界面识别及特征[J].新疆地质,2014,32(2):219-224.
[15]付超.塔东却尔却克组层序地层及沉积特征研究[D].北京:中国地质大学,2012:13-22.
[16]高志勇,张水昌,李建军,等.塔里木盆地东部中—上奥陶统却尔却克组海相碎屑岩中的有效烃源岩[J].石油学报,2011,32(1):32-40.
[17]赵殿栋.塔里木盆地大沙漠区地震采集技术的发展及展望——可控震源地震采集技术在MGT地区的试验及应用[J].石油物探,2015,54(4):367-375.
[18]张玮,蔡加铭.塔里木盆地塔中沙漠区高分辨率地震勘探效果[J].中国石油勘探,2007,12(3):43-48.
[19]何登发,周新源,张朝军,等.塔里木地区奥陶纪原型盆地类型及其演化[J].科学通报,2007,52(S1):126-135.
[20]任康旭,肖中尧,张丽娟,等.塔里木盆地志留系层序地层特征及其勘探意义[J].海相油气地质,2011,16(1):20-25.
[21]韩杰,江杰,潘文庆,等.塔中西部奥陶系桑塔木组底界灰岩段的识别及沉积学意义[J].天然气地球科学,2014,25(4):490-497.
[22]万梨,侯明才,傅恒,等.塔河南上奥陶统桑塔木组沉积环境分析[J].成都理工大学学报,2007,34(2):128-134.
[23]高志勇,张水昌,郭宏莉,等.塔里木盆地满加尔凹陷西北缘上奥陶统铁热克阿瓦提组海相砂体类型与储集性[J].古地理学报,2009,11(4):413-424
[24]张云龙,蒲仁海,云露,等.塔里木顺托果勒地区柯坪塔格组下段勘探新发现及其启示[J].地质论评,2013,59(2):300-314.
[25]刘豪,王英民,王媛.浅海陆棚环境下沉积坡折带及其对局部强制海退体系域的控制[J].沉积学报,2011,29(5):906-916.
[26]Octavian Catuneanu.Principles of Sequence Stratigraphy[M].Amsterdan:Elsevier,2006.
[27]许志琴,李思田,张建新,等.塔里木地块与古亚洲/特提斯构造体系的对接[J].岩石学报,2011,27(1):1-22.
[28]赵宗举.全球海平面变化指标及海相构造层序研究方法[J].石油学报,2015,36(3):262-273.
[29]郭彦如,赵振宇,徐旺林,等.鄂尔多斯盆地奥陶系层序地层格架[J].沉积学报,2014,32(1):44-60.
[30]张光亚,刘伟,张磊,等.塔里木克拉通寒武纪—奥陶纪原型盆地、岩相古地理与油气[J].地学前缘,2015,22(3):269-276.
[31]杨兵,夏浩东,杨欣杰,等.晚古生代冰期研究进展[J].地质科技情报,2016,35(2):140-151.
[32]葛祥英,牟传龙,周恳恳,等.湖南晚奥陶世凯迪晚期—赫南特期沉积相及岩相古地理[J].沉积学报,2014,32(1):8-17.
[33]王远翀,梁薇,牟传龙,等.渝东南_黔北地区赫南特期冰川事件的沉积响应[J].沉积学报,2015,33(2):232-241.
[34]Delabroye A,Vecoli M.The end-Ordovician glaciation and the Hirnantian Stage:A global review and questions about Late Ordovician event stratigraphy[J].Earth-Science Reviews,2010,98(3/4):269-282.
[35]景秀春.塔里木盆地奥陶纪台地相区牙形石及寒武—奥陶系界线[D].北京:中国地质大学,2009.
[36]江大勇,郝维城,白顺良,等.新疆塔里木盆地晚奥陶世—早石炭世地层划分对比研究新突破[J].北京大学学报:自然科学版,2001,37(04):529-536.
[37]蔡志慧.塔里木盆地东北缘早古生代造山带的造山过程及对塔里木盆地的影响[D].中国地质科学院,2010:127-133.
[38]程日辉,王璞珺,孙晓猛,等.库鲁克塔格地区奥陶系层序地层与海平面变化[J].大地构造与成矿学,2006(3):283-292.