准噶尔盆地腹部侏罗系层序地层特征
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摘要
准噶尔盆地腹部地区主要目的层侏罗系埋藏深,构造形态简单,岩性油气藏是主要的油气藏类型。综合利用腹部地区钻井和地震资料,建立起了该地区侏罗系三级层序地层格架,把侏罗系划分为6个三级层序(Sq1—Sq6)。研究认为,与具坡折带陆相断陷湖盆层序模型相比,准噶尔盆地腹部地区侏罗系层序形成于坡折带不发育或异常平缓的古地理背景下,因而其形成的层序特征也表现出独有的平缓地形特点,且突出表现为不整合面全盆范围内分布,无法依据坡折带划分低水位体系域,水进体系域厚度薄等特点。受古地形起伏、古气候条件等古地理因素不同的影响,该6个层序形成于3种不同的古地理沉积背景中:潮湿气候平缓斜坡背景(Sq1、Sq2、Sq4)、潮湿气候缓斜斜坡背景(Sq3)、干旱气候平缓斜坡背景(Sq5、Sq6),相应地表现出不同的层序特征。
In the Central Junggar Basin the Jurassic strata is deeply buried, with poorly developed positive elements, and lithologic reservoirs are the favorable exploration targets. Based on the well and seismic data,sequence stratigraphic theory and techniques are used to build the Jurassic sequence stratigraphic frame, which consists of six 3rd-order sequences(Sq1—Sq6). Compared with the standard sequence models in faulted basins with breaks, the sequences in the Central Junggar Basin were formed in gently dipped slopes with no or gentle breaks and show corresponding characteristics: widely distributied unconformities, untraceable lowstand systems tracts only by gently dipped breaks, thin transgressive systems tracts, etc. All the 6 Jurassic 3rd-order sequences were formed in the gently dipped slopes. However, due to the difference in land forms and palaeoclimate,their depositional environments can be divided into three palaeogeographic groups:flat dipped slope in a humid climate(Sq1,Sq2,Sq4); gentle dipped slope in a humid climate (Sq3); flat dipped slope in an arid climate (Sq5,Sq6)). Accordingly, each group has different stratigraphic characteristics.
In the Central Junggar Basin the Jurassic strata is deeply buried, with poorly developed positive elements, and lithologic reservoirs are the favorable exploration targets. Based on the well and seismic data,sequence stratigraphic theory and techniques are used to build the Jurassic sequence stratigraphic frame, which consists of six 3rd-order sequences(Sq1—Sq6). Compared with the standard sequence models in faulted basins with breaks, the sequences in the Central Junggar Basin were formed in gently dipped slopes with no or gentle breaks and show corresponding characteristics: widely distributied unconformities, untraceable lowstand systems tracts only by gently dipped breaks, thin transgressive systems tracts, etc. All the 6 Jurassic 3rd-order sequences were formed in the gently dipped slopes. However, due to the difference in land forms and palaeoclimate,their depositional environments can be divided into three palaeogeographic groups:flat dipped slope in a humid climate(Sq1,Sq2,Sq4); gentle dipped slope in a humid climate (Sq3); flat dipped slope in an arid climate (Sq5,Sq6)). Accordingly, each group has different stratigraphic characteristics.
引文
鲍志东,管守锐,李儒峰,王英民,刘凌,赵秀岐,齐雪峰.2002.准噶尔盆地侏罗系层序地层学研究.石油勘探与开发,29(1):48—52
陈代钊,张鹏飞.1996.三角洲平原上网结河的发育与聚煤作用.沉积学报,14(3):103—112
胡宗全,李明娟.2003.准噶尔盆地西北缘侏罗系层序模拟与沉积相演化特征.石油天然气与地质,24(4):351—356
胡宗全,朱筱敏,彭勇民.2001.准噶尔盆地西北缘车排子地区侏罗系物源及古水流分析.古地理学报,3(3):49—54
李思田,吴冲龙.1992.论沉积盆地分析领域的追踪与创新.沉积学报,10(3):10—15
刘豪,王英民,王媛.2002.浅析准噶尔盆地侏罗系煤层在层序地层中的意义.沉积学报,20(2):197—202
柳永清,李寅.2001.准噶尔盆地侏罗系露头层序地层及沉积学特征.地球学报,22(1):49—54
蒲仁海,梅志超,唐忠华.1994.准噶尔盆地东部侏罗系陆相层序地层初探.新疆石油地质,15(4):335—341
王英民,刘豪,李立诚,齐雪峰,王媛.2002.准噶尔大型坳陷湖盆坡折带的类型和分布特征.地球科学———中国地质大学学报,27(6):683—688
张满郎,张琴,朱筱敏.2000.准噶尔盆地侏罗系层序地层划分探讨.石油实验地质,22(3):236—241
张年富,齐雪峰,王英民,刘豪,王媛.2002.准噶尔盆地侏罗系Ⅲ层序底界上下砂体预测与有利区评价.石油天然气与地质,23(2):145—149
赵玉光,丘东洲.1993.西准噶尔界山前陆盆地晚期(T-J)层序地层与油气勘探.新疆石油地质,14(4):323—331
朱筱敏,康安,张琴,张满郎,况军,吴晓智,韩军.2002.准噶尔盆地东北缘侏罗系含煤岩系层序地层和隐蔽圈闭.石油与天然气地质,23(2):121—126
Bao Zhi-dong,Guan Shou-rui,Li Ru-feng,Liu Lin,Zhao Xiu-qi&Qi Xue-feng.2002.Sequence stratigraphy of the Jurassic inJunggar Basin.Petroleum Exploration and Development,29(1):48—52
Chen Dai-zhao&Zhang Peng-fei.1996.Development of anasto-mosed fluvial systems and coal accumulation on the deltaicplain.Acta Sedi mentologica Sinica,14(3):103—112
Hu Zong-quan,Zhu Xiao-min&Peng Yong-min.2001.Analysis ofprovenance and palaeocurrent direction of Jurassic at ChepaiziRegionin northwest edge of Junggar Bsin.Journal of Palaeo-geography,3(3):49—54
Hu Zong-quan&Li Ming-juan.2003.Sequence modeling and sedi-mentary facies evolution of Jurassic in northwestern edge ofJunggar Basin.Oil&Gas Geology,24(4):351—356
Li Si-tian&Wu Chong-long.1992.The trace andinnovationin theanalysis of sedi mentary basin.Acta Sedi mentologica Sinica,10(3):10—15
Liu Hao,Wang Ying-min&Wang Yuan.2002.Analyses of thesignificances of Jurassic coal layers in sequence stratigraphy inJunggar Basin.Acta Sedi mentologica Sinica,20(2):197—202
Liu Yong-qing&Li Yin.2001.Research onthe terrigenous outcropsequence stratigraphy and sedi mentologyin the Jurassic JunggarBasin.Acta Geosicientia Sinica,22(1):49—54
Pu Ren-hai,Mei Zhi-chao&Tang Zhong-hua.1994.Apreli minarydiscussion of Jurassic non-marine sequence stratigraphy,East-ern Junggar Basin.Xinjiang Petroleum Geology,15(4):335—341
Wang Ying-min,Liu Hao,Li Li-cheng,Qi Xue-feng&WangYuan.2002.Types and distribution characteristics of slopebreaks of large-type down-warped lake basins.Earth Science:Journal of China University of Geosciences,27(6):683—688
Zhang Man-lang,Zhang Qin&Zhu Xiao-ming.2000.On division ofthe Jurassic sequence stratigraphyinthe Junggar Basin.Exper-i mental Petroleum Geology,22(3):236-241
Zhang Nian-fu,Qi Xue-feng,Wang Ying-min,Liu Hao&WangYuan.2002.Prediction of upper and down sandbodies in thebottom boundary ofⅢsequence of Jurassic in Junggar Basinand evalutaion of favorable areas.Oil&Gas Geology,23(2):145—149
Zhao Yu-guang&Qiu Dong-zhou.1993.Sequence stratigraphy andoil and gas exploration in the later fore-land basin to the westboundary of Junggar.Xinjiang Petroleum Geology,14(4):323—331.
Zhu Xiao-min,Kang An,Zhang Qin Zahng Man-lang,Kuang Jun,Wu Xiao-zhi&Han Jun.2002.Sequence stratigraphy of Juras-sic coal-bearing measure and subtle trapin the northeast edge ofJunggar Basin.Oil&Gas Geology,23(2):121—126
陈代钊,张鹏飞.1996.三角洲平原上网结河的发育与聚煤作用.沉积学报,14(3):103—112
胡宗全,李明娟.2003.准噶尔盆地西北缘侏罗系层序模拟与沉积相演化特征.石油天然气与地质,24(4):351—356
胡宗全,朱筱敏,彭勇民.2001.准噶尔盆地西北缘车排子地区侏罗系物源及古水流分析.古地理学报,3(3):49—54
李思田,吴冲龙.1992.论沉积盆地分析领域的追踪与创新.沉积学报,10(3):10—15
刘豪,王英民,王媛.2002.浅析准噶尔盆地侏罗系煤层在层序地层中的意义.沉积学报,20(2):197—202
柳永清,李寅.2001.准噶尔盆地侏罗系露头层序地层及沉积学特征.地球学报,22(1):49—54
蒲仁海,梅志超,唐忠华.1994.准噶尔盆地东部侏罗系陆相层序地层初探.新疆石油地质,15(4):335—341
王英民,刘豪,李立诚,齐雪峰,王媛.2002.准噶尔大型坳陷湖盆坡折带的类型和分布特征.地球科学———中国地质大学学报,27(6):683—688
张满郎,张琴,朱筱敏.2000.准噶尔盆地侏罗系层序地层划分探讨.石油实验地质,22(3):236—241
张年富,齐雪峰,王英民,刘豪,王媛.2002.准噶尔盆地侏罗系Ⅲ层序底界上下砂体预测与有利区评价.石油天然气与地质,23(2):145—149
赵玉光,丘东洲.1993.西准噶尔界山前陆盆地晚期(T-J)层序地层与油气勘探.新疆石油地质,14(4):323—331
朱筱敏,康安,张琴,张满郎,况军,吴晓智,韩军.2002.准噶尔盆地东北缘侏罗系含煤岩系层序地层和隐蔽圈闭.石油与天然气地质,23(2):121—126
Bao Zhi-dong,Guan Shou-rui,Li Ru-feng,Liu Lin,Zhao Xiu-qi&Qi Xue-feng.2002.Sequence stratigraphy of the Jurassic inJunggar Basin.Petroleum Exploration and Development,29(1):48—52
Chen Dai-zhao&Zhang Peng-fei.1996.Development of anasto-mosed fluvial systems and coal accumulation on the deltaicplain.Acta Sedi mentologica Sinica,14(3):103—112
Hu Zong-quan,Zhu Xiao-min&Peng Yong-min.2001.Analysis ofprovenance and palaeocurrent direction of Jurassic at ChepaiziRegionin northwest edge of Junggar Bsin.Journal of Palaeo-geography,3(3):49—54
Hu Zong-quan&Li Ming-juan.2003.Sequence modeling and sedi-mentary facies evolution of Jurassic in northwestern edge ofJunggar Basin.Oil&Gas Geology,24(4):351—356
Li Si-tian&Wu Chong-long.1992.The trace andinnovationin theanalysis of sedi mentary basin.Acta Sedi mentologica Sinica,10(3):10—15
Liu Hao,Wang Ying-min&Wang Yuan.2002.Analyses of thesignificances of Jurassic coal layers in sequence stratigraphy inJunggar Basin.Acta Sedi mentologica Sinica,20(2):197—202
Liu Yong-qing&Li Yin.2001.Research onthe terrigenous outcropsequence stratigraphy and sedi mentologyin the Jurassic JunggarBasin.Acta Geosicientia Sinica,22(1):49—54
Pu Ren-hai,Mei Zhi-chao&Tang Zhong-hua.1994.Apreli minarydiscussion of Jurassic non-marine sequence stratigraphy,East-ern Junggar Basin.Xinjiang Petroleum Geology,15(4):335—341
Wang Ying-min,Liu Hao,Li Li-cheng,Qi Xue-feng&WangYuan.2002.Types and distribution characteristics of slopebreaks of large-type down-warped lake basins.Earth Science:Journal of China University of Geosciences,27(6):683—688
Zhang Man-lang,Zhang Qin&Zhu Xiao-ming.2000.On division ofthe Jurassic sequence stratigraphyinthe Junggar Basin.Exper-i mental Petroleum Geology,22(3):236-241
Zhang Nian-fu,Qi Xue-feng,Wang Ying-min,Liu Hao&WangYuan.2002.Prediction of upper and down sandbodies in thebottom boundary ofⅢsequence of Jurassic in Junggar Basinand evalutaion of favorable areas.Oil&Gas Geology,23(2):145—149
Zhao Yu-guang&Qiu Dong-zhou.1993.Sequence stratigraphy andoil and gas exploration in the later fore-land basin to the westboundary of Junggar.Xinjiang Petroleum Geology,14(4):323—331.
Zhu Xiao-min,Kang An,Zhang Qin Zahng Man-lang,Kuang Jun,Wu Xiao-zhi&Han Jun.2002.Sequence stratigraphy of Juras-sic coal-bearing measure and subtle trapin the northeast edge ofJunggar Basin.Oil&Gas Geology,23(2):121—126
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