塔里木盆地塔北隆起西部巴什基奇克组层序地层及沉积演化
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摘要
综合利用钻井、测井和地震资料,应用经典层序地层学理论,建立了塔里木盆地塔北隆起西部下白垩统巴什基奇克组层序地层格架。依据区域性不整合面、沉积相突变界面及地层叠置样式转变面,可识别出4个层序界面,将巴什基奇克组划分为由一个完整的湖平面升降旋回构成的二级层序,可进一步划分出3个三级层序,其内部可划分出低位体系域、湖侵体系域和高位体系域。通过岩心观察、测井曲线及地震资料在层序格架内识别出了扇三角洲和辫状河三角洲沉积体系,其中扇三角洲主要为退积型,辫状河三角洲为进积型和退积型2类;分析了研究区沉积体系的分布特征、演化规律及其控制因素,建立了巴什基奇克组沉积演化模式。
Based on comprehensive drilling,logging and seismic data,with application of classic sequence stratigraphy theory,the sequence stratigraphic framework of Early Cretaceous Bashijiqike Formation in the western Tabei Uplift of Tarim Basin was established.According to the regional unconformities,abrupt interface of sedimentary facies and the change of transforming surface of stratigraphic accumulation type,4sequence boundaries were identified in the study area.One second-order sequences of Bashijiqike Formation in the study area were recognized,which can consist of a complete regional lake-level rise and fall cycles.The second-order sequences can be further divided into 3third-order sequences.Each sequence was further divided into low stand system tracts,transgressive and high stand system tracts.Fan delta and braided river delta sedimentary systems are identified,based on the analysis of core observation,well logs and seismic data within sequences in the study area.The fan deltas of Bashijiqike Formation developed in the study area are mainly regressive type and the braided river deltas are progressive type and degenerate type.The distribution and evolution of depositional systems and their controlling factors in the study area are analyzed.Then,the depositional evolvement model of Bashijiqike Formation was established.
Based on comprehensive drilling,logging and seismic data,with application of classic sequence stratigraphy theory,the sequence stratigraphic framework of Early Cretaceous Bashijiqike Formation in the western Tabei Uplift of Tarim Basin was established.According to the regional unconformities,abrupt interface of sedimentary facies and the change of transforming surface of stratigraphic accumulation type,4sequence boundaries were identified in the study area.One second-order sequences of Bashijiqike Formation in the study area were recognized,which can consist of a complete regional lake-level rise and fall cycles.The second-order sequences can be further divided into 3third-order sequences.Each sequence was further divided into low stand system tracts,transgressive and high stand system tracts.Fan delta and braided river delta sedimentary systems are identified,based on the analysis of core observation,well logs and seismic data within sequences in the study area.The fan deltas of Bashijiqike Formation developed in the study area are mainly regressive type and the braided river deltas are progressive type and degenerate type.The distribution and evolution of depositional systems and their controlling factors in the study area are analyzed.Then,the depositional evolvement model of Bashijiqike Formation was established.
引文
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[2] Zhou Peng,Tang Yangang,Yin Hongwei,et al.Relationship between characteristics of fracture belt and production of Keshen 2gas reservoir in Kelasu tectonic zone,Tarim Basin[J].Natural Gas Geoscience,2017,28(1):135-145.周鹏,唐雁刚,尹宏伟,等.塔里木盆地克拉苏构造带克深2气藏储层裂缝带发育特征及与产量关系[J].天然气地球科学,2017,28(1):135-145.
[3] Lin Changsong.Sequence and depositional architecture of sedimentary basin and process responses[J].Acta Sedimentologica Sinica,2009,27(5):849-862.林畅松.沉积盆地的层序和沉积充填结构及过程响应[J].沉积学报,2009,27(5):849-862.
[4] Jiang Zaixing.Studies of depositional systems and sequence stratigraphy:the present and the future[J].Oil&Gas Geology,2010,31(5):535-541.姜在兴.沉积体系及层序地层学研究现状及发展趋势[J].石油与天然气地质,2010,31(5):535-541.
[5] Mei Mingxiang,Yu Bingsong,Jin Weiguang.Sequence stratigraphic framework and palaeogeography evolution of the Cretaceous in Kuqa Depression,Tarim Basin[J].Journal of Palaeogeography,2004,6(3):261-278.梅冥相,于炳松,靳卫广.塔里木盆地库车坳陷白垩纪层序地层格架及古地理演化[J].古地理学报,2004,6(3):261-278.
[6] Liu Chensheng,Zhang Linting,Guo Jianhua.Sequence of cetaceous in Tarim Basin[J].Journal of Central South University:Earth Science Edition,2012,43(7):2683-2690.刘辰生,张琳婷,郭建华.塔里木盆地白垩系层序地层学[J].中南大学学报:自然科学版,2012,43(7):2683-2690.
[7] Ren Yuze,Lin Changsong,Gao Zhiyong,et al.Sequence stratigraphy and sedimentary filling evolution of the Cretaceous in Southwest Depression,Tarim Basin[J].Natural Gas Geoscience,2017,28(9):1298-1311.任宇泽,林畅松,高志勇,等.塔里木盆地西南坳陷白垩系层序地层与沉积充填演化[J].天然气地球科学,2017,28(9):1298-1311.
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[9] Lin Changsong,Wang Qinghua,Xiao Jianxin,et al.Depositional sequence architecture and filling response model of the Cretaceous in the Kuqa Depression,the Tarim Basin[J].Science in China:Series D,2004,34(supplement 1):74-82.林畅松,王清华,肖建新,等.库车坳陷白垩纪沉积层序构成及充填响应模式[J].中国科学:D辑,2004,34(增刊1):74-82.
[10] Jia Jinhua.Depositional sequence and reservoir of Cretaceous Bashijiqike Formation in Kuqa foreland basin[J].Earth Science Frontiers,2000,7(3):133-143.贾进华.库车前陆盆地白垩纪巴什基奇克组沉积层序与储层研究[J].地学前缘,2000,7(3):133-143.
[11] Liu Yongfu,Zhao Jianhua,Fan Qiuhai,et al.Study on the sequence stratigraphy and depositional systems of the Kapushaliang Group of Cretaceous in the central Tabei Uplift[J].Acta Sedimentologica Sinica,2014,32(6):1113-1122.刘永福,赵建华,范秋海,等.塔北隆起中部白垩系卡普沙良群层序地层格架及沉积体系研究[J].沉积学报,2014,32(6):1113-1122.
[12] Wang Gaiyun,Wang Yingmin,Liao Feiyan,et al.Sequence stratigraphic pattern and forecast of favorable zones for hydrocarbon exploration of Cretaceous in Akekule area[J].Journal of Jilin University:Earth Science Edition,2010,40(5):996-1003.王改云,王英民,廖飞燕,等.阿克库勒地区白垩系层序地层样式及油气勘探有利区带预测[J].吉林大学学报:地球科学版,2010,40(5):996-1003.
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[16] An Haiting,Li Haiyin,Wang Jianzhong,et al.Tectonic evolution and its controlling on oil and gas accumulation in the northern Tarim Basin[J].Geotectonica et Metallogenia,2009,33(1):142-147.安海亭,李海银,王建忠,等.塔北地区构造和演化特征及其对油气成藏的控制[J].大地构造与成矿学,2009,33(1):142-147.
[17] Li Meng,Tang Liangjie,Qi Lixin,et al.Differential tectonic evolution and its controlling on hydrocarbon accumulation in the south slope of Tabei Uplift[J].Natural Gas Geoscience,2015,26(2):218-228.李萌,汤良杰,漆立新,等.塔北隆起南坡差异构造演化及其对油气成藏的控制[J].天然气地球科学,2015,26(2):218-228.
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[19] Peng Shoutao,Song Haiming.The sedimentation rates analysis of Cretaceous depositional succession in the northern Kuqa Depression,northwest China[J].Acta Sedimentologica Sinica,2006,24(5):641-649.彭守涛,宋海明.库车坳陷北部白垩系沉积速率分析[J].沉积学报,2006,24(5):641-649.
[20] Chen Ge,Huang Zhibin,Zhang Huiliang,et al.Provenance analysis of clastic rocks in the Cretaceous Bashijiqike Formation at Kuqa Depression[J].Natural Gas Geoscience,2012,23(6):1025-1033.陈戈,黄智斌,张惠良,等.塔里木盆地库车坳陷白垩系巴什基奇克组物源精细分析[J].天然气地球科学,2012,23(6):1025-1033.
[21] Ma Yujie,Zhang Ronghu,Tang Yangang,et al.Lithofacies paleogeography of Cretaceous Bashijiqike Formation in Kuqa Depression,Tarim Basin[J].Xinjiang Petroleum Geology,2016,37(3):249-256.马玉杰,张荣虎,唐雁刚,等.塔里木盆地库车坳陷白垩系巴什基奇克组岩相古地理[J].新疆石油地质,2016,37(3):249-256.
[22] Zhang Ronghu,Wang Junpeng,Ma Yujie,et al.The sedimentary microfacies,palaeogeomorphology and their controls on gas accumulation of deep-buried Cretaceous in Kuqa Depression,Tarim Basin,China[J].Natural Gas Geoscience,2015,26(4):667-678.张荣虎,王俊鹏,马玉杰,等.塔里木盆地库车坳陷深层沉积微相古地貌及其对天然气富集的控制[J].天然气地球科学,2015,26(4):667-678.
[23] He Guangyu,Zhao Qing,Li Shuxin,et al.Analysis on Mesozoic prototypes of the Kuqa Basin in Tarim,northwestern China[J].Chinese Journal of Geology,2006,41(1):44-53.何光玉,赵庆,李树新,等.塔里木库车盆地中生代原型分析[J].地质科学,2006,41(1):44-53.
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