蒙古国塔木察格盆地塔南凹陷南屯组—大磨拐河组沉积特征
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摘要
为深入研究塔木察格盆地塔南凹陷南屯组—大磨拐河组沉积环境,基于盆地演化和沉积构造背景等多种资料,利用3种沉积相标志划分南屯组—大磨拐河组的沉积相类型,分析垂向沉积演化序列、沉积相平面展布和物源位置及变化。研究结果表明:南屯组—大磨拐河组发育三角洲、湖泊和水下扇3种沉积相,细分出7种沉积亚相和10种沉积微相;受构造活动的影响,不同构造单元之间沉积相展布具有相对独立性,同一构造单元内垂向沉积序列具有一定的继承性;基于沉积盆地的伸展作用,南屯组—大磨拐河组平面上发育多种沉积体系类型,沉积充填与演化明显受不同构造幕控制,划分为2～3个物源区,受控于盆地演化和同生断层活动,南屯组—大磨拐河组物源区位置和物源供应量有所变化;平面上南屯组(早期)呈现"窄盆、深水"特点,以水下扇—扇三角洲—三角洲沉积体系为主,大磨拐河组呈现"广盆、浅水"特点,形成三角洲—湖泊沉积体系。研究成果可完善研究区沉积体系建设并指导下步勘探开发工作,分析方法可为其他区块沉积特征研究提供借鉴。
In order to deeply study the sedimentary features from Nantun Formation to Damoguaihe Formation in Tanan Sag of Tamutsag Basin, based on the following data i.e. the basin evolution, sedimentary structure background and so on, with the help of three kinds of sedimentary facies marker, the sedimentary facies types were classified for the two formations stated above, and moreover the vertical sedimentary evolution sequence, planar distribution of the sedimentary facies, the location and change of the source area were analyzed. The study results show that three kinds of the sedimentary facies including delta, lacustrine and subaqueous fan were developed from Nantun Formation to Damoguaihe Formation, and furthermore seven sedimentary subfacies and ten microfacies were divided in detail; influenced by the structural activities, the distribution and spread of the sedimentary facies among different structural units show relative independent, the vertical sedimentary sequence within the same unit possesses a certain inheritance; based on the spreading action of the sedimentary basin, multiple sedimentary system types are developed planarly in the two formations, the sedimentary infill and evolution are obviously controlled by different structural phases, two or three source areas are divided, duo to the control of the basin evolution and contemporaneous fault activities, the location of the source area and the supply amount of the source are changed; in horizon, Early Nantun Formation is characterized by "narrow basin and deep water", the subaqueous fan-fan delta-delta sedimentary system is the main form, while Damoguaihe Formation is featured by "wide basin and shallow water", the delta-lacustrine sedimentary system is generated. The study results can improve the construction of the sedimentary system in the study area and guide the next exploration and development, the analyzing method can provide the reference for the study of the sedimentary characteristics in the other region.
In order to deeply study the sedimentary features from Nantun Formation to Damoguaihe Formation in Tanan Sag of Tamutsag Basin, based on the following data i.e. the basin evolution, sedimentary structure background and so on, with the help of three kinds of sedimentary facies marker, the sedimentary facies types were classified for the two formations stated above, and moreover the vertical sedimentary evolution sequence, planar distribution of the sedimentary facies, the location and change of the source area were analyzed. The study results show that three kinds of the sedimentary facies including delta, lacustrine and subaqueous fan were developed from Nantun Formation to Damoguaihe Formation, and furthermore seven sedimentary subfacies and ten microfacies were divided in detail; influenced by the structural activities, the distribution and spread of the sedimentary facies among different structural units show relative independent, the vertical sedimentary sequence within the same unit possesses a certain inheritance; based on the spreading action of the sedimentary basin, multiple sedimentary system types are developed planarly in the two formations, the sedimentary infill and evolution are obviously controlled by different structural phases, two or three source areas are divided, duo to the control of the basin evolution and contemporaneous fault activities, the location of the source area and the supply amount of the source are changed; in horizon, Early Nantun Formation is characterized by "narrow basin and deep water", the subaqueous fan-fan delta-delta sedimentary system is the main form, while Damoguaihe Formation is featured by "wide basin and shallow water", the delta-lacustrine sedimentary system is generated. The study results can improve the construction of the sedimentary system in the study area and guide the next exploration and development, the analyzing method can provide the reference for the study of the sedimentary characteristics in the other region.
引文
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[5]张辉. 蒙古国塔南凹陷近岸水下扇沉积特征及控制因素[J].中国西部科技,2010,9(6):39-41.ZHANG Hui. Sedimentary characteristics and controls of nearshore subaqueous fan within Tanan Depression of Mongolia[J].Science and Technology of West China, 2010,9(6):39-41.
[6]王建鹏,刘招君,苗长盛,等. 蒙古塔木察格盆地塔南凹陷下白垩统南屯组三角洲沉积及储层特征[J].世界地质,2011, 30(3):415-428.WANG Jianpeng, LIU Zhaojun, MIAO Changsheng, et al. Sedimentaty and reservoir characteristics of delta in Early Cretaceous Nantun Formation in Tanan Sag of Tamchag Basin in Mongolia[J].Global Geology, 2011, 30(3):415-428.
[7]苗长盛,刘招君,方石,等. 塔南凹陷南屯组近岸水下扇沉积特征及有利含油相带分析[J].中国石油大学学报(自然科学版),2011, 35(1):34-39.MIAO Changsheng,LIU Zhaojun,FANG Shi,et al.Sedimentary characteristics and favorable oil-bearing facies belts analysis of near-shore subaqueous fan of Nantun Formation in Tanan Depression[J].Journal of China University of Petroleum (Natural Science Edition), 2011, 35(1):34-39.
[8]苗长盛,刘招君,方石,等. 蒙古国塔南凹陷南屯组深凹槽远岸重力流沉积特征[J].地球科学——中国地质大学学报,2012, 37(4):771-778.MIAO Changsheng, LIU Zhaojun, FANG Shi, et al. Characteristics of the steep-slope off-shore subaqueous fan of Nantun Formation in Tanan Sag in Mongolia[J].Earth Science-Journal of China University of Geosciences, 2012, 37(4):771-778.
[9]刘招君,张迪,贾建亮,等. 蒙古国塔南凹陷南屯组水下扇的沉积演化特征[J].吉林大学学报(地球科学版),2012, 42(增刊1):1-7.LIU Zhaojun, ZHANG Di, JIA Jianliang, et al. Characteristics of sedimentary evolvement of subaqueous fan in Nantun Formation of Tanan Depression from Mongolia[J].Journal Of Jilin University (Earth Science Edition), 2012, 42(S1):1-7.
[10]单敬福,纪友亮,金利红,等. 塔南—南贝尔凹陷南屯组沉积相特征[J].中南大学学报(自然科学版),2013, 44(1):241-250.SHAN Jingfu, JI Youliang, JIN Lihong, et al. Sedimentary facies characteristics of Nantun Formation in Tanan-Southbell Depression[J].Journal of Central South University (Science and Technology), 2013, 44(1):241-250.
[11]王显东,贾承造,蒙启安,等. 塔南断陷陡坡带南屯组岩性油藏形成与分布的主控因素[J].石油学报,2011, 32(4):564-572.WANG Xiandong, JIA Chengzao, MENG Qi’an, et al. Main controlling factors of the formation and distribution of Nantun Formation lithologic reservoirs in the abrupt slope zone, Tanan Sag[J].Acta Petrolei Sinica, 2011, 32(4):564-572.
[12]闫磊,刘招君,方石,等. 塔南凹陷南屯组—大磨拐河组构造特征及与油气藏关系[J].石油天然气学报,2013, 35(1):1-5.YAN Lei, LIU Zhaojun, FANG Shi, et al. Structural feature of Nantun-Damoguaihe Formation in Tanan Depression and its relation with oil-gas reservoir[J].Journal of Oil and Gas Technology, 2013, 35(1):1-5.
[13]刘招君. 湖泊水下扇沉积特征及影响因素:以伊通盆地莫里青断陷双阳组为例[J].沉积学报,2003, 21(1):148-154.LIU Zhaojun.Subaqueous fan sedimentary characteristics and influence factors: A case study of Shuangyang Formation in Moliqing Fault Subsidence of Yitong Basin[J].Acta Sedimentologica Sinica, 2003, 21(1):148-154.
[14]张革,孙效东,刘赫,等. 塔木察格盆地塔南凹陷南屯组储层特征[J]. 大庆石油地质与开发,2014,33 (6):26-30.ZHANG Ge,SUN Xiaodong,LIU He, et al. Characteristics of Nantun-Formation reservoirs in Tanan Sag of Tamutsag Basin[J]. Petroleum Geology & Oilfield Development in Daqing,2014,33 (6):26-30.
[15]陈玮常,漆家福,姜洪福,等. 蒙古国东方省海塔盆地塔南凹陷断裂特征及其油气意义[J].古地理学报,2013, 15(4):539-550.CHEN Weichang, QI Jiafu, JIANG Hongfu, et al.Characteristics of fault structure in Tanan Sag,Haita Basin in Dornod Aymag, Mongolia and its hydrocarbon significance[J].Journal of Palaeogeography, 2013, 15(4):539-550.
[16]陈均亮,吴河勇,朱德丰,等.海拉尔盆地构造演化及油气勘探前景[J].地质科学,2007, 42(1):147-158.CHEN Junliang, WU Heyong, ZHU Defeng, et al. Tectonic evolution of the Hailar Basin and its potentials of oil-gas exploration[J].Chinese Journal of Geology,2007, 42(1):147-158.
[17]樊晓东,李忠权,刘剑营. 海拉尔盆地贝中油田南一段沉积微相特征[J]. 大庆石油地质与开发,2015,34 (2):34-40.FAN Xiaodong,LI Zhongquan,LIU Jianying.Characteristics of the sedimentary microfacies in Member Nan-1 of Beizhong Oilfield in Hailer Basin[J]. Petroleum Geology & Oilfield Development in Daqing,2015,34 (2):34-40.
[2]李强,张革,孙效东,等. 蒙古国塔木察格盆地塔南凹陷下白垩统铜钵庙组沉积特征和构造—古地理意义[J].古地理学报,2014,16(6):897-906.LI Qiang, ZHANG Ge, SUN Xiaodong,et al. Sedimentary features and its tectono-palaeogeographic significance of the Lower Cretaceous Tongbomiao Formation in Tanan Sag, Tamchag Basin, Mongolia[J].Journal of Palaeogeography, 2014,16(6):897-906.
[3]纪友亮,蒙启安,曹瑞成,等. 蒙古国东部塔木察格盆地南部白垩系地层结构及沉积充填特征[J].古地理学报,2010,12(6):729-736.JI Youliang, MENG Qi’an,CAO Ruicheng, et al. Stratigraphic architecture and sedimentary infilling characteristics of the Cretaceous in Southern Tamchage Basin, Eastern Mongolia[J].Journal of Palaeogeography, 2010, 12(6):729-736.
[4]纪友亮,蒙启安,单敬福,等. 塔南—南贝尔凹陷南屯组下部沉积体系平面展布特征[J].石油实验地质,2011, 33(3):260-265.JI Youliang, MENG Qi’an, SHAN Jingfu, et al. Depositional system of Lower Nantun Formation in South Tamuchage-South Beier Sag[J].Petroleum Geology and Experiment, 2011, 33(3):260-265.
[5]张辉. 蒙古国塔南凹陷近岸水下扇沉积特征及控制因素[J].中国西部科技,2010,9(6):39-41.ZHANG Hui. Sedimentary characteristics and controls of nearshore subaqueous fan within Tanan Depression of Mongolia[J].Science and Technology of West China, 2010,9(6):39-41.
[6]王建鹏,刘招君,苗长盛,等. 蒙古塔木察格盆地塔南凹陷下白垩统南屯组三角洲沉积及储层特征[J].世界地质,2011, 30(3):415-428.WANG Jianpeng, LIU Zhaojun, MIAO Changsheng, et al. Sedimentaty and reservoir characteristics of delta in Early Cretaceous Nantun Formation in Tanan Sag of Tamchag Basin in Mongolia[J].Global Geology, 2011, 30(3):415-428.
[7]苗长盛,刘招君,方石,等. 塔南凹陷南屯组近岸水下扇沉积特征及有利含油相带分析[J].中国石油大学学报(自然科学版),2011, 35(1):34-39.MIAO Changsheng,LIU Zhaojun,FANG Shi,et al.Sedimentary characteristics and favorable oil-bearing facies belts analysis of near-shore subaqueous fan of Nantun Formation in Tanan Depression[J].Journal of China University of Petroleum (Natural Science Edition), 2011, 35(1):34-39.
[8]苗长盛,刘招君,方石,等. 蒙古国塔南凹陷南屯组深凹槽远岸重力流沉积特征[J].地球科学——中国地质大学学报,2012, 37(4):771-778.MIAO Changsheng, LIU Zhaojun, FANG Shi, et al. Characteristics of the steep-slope off-shore subaqueous fan of Nantun Formation in Tanan Sag in Mongolia[J].Earth Science-Journal of China University of Geosciences, 2012, 37(4):771-778.
[9]刘招君,张迪,贾建亮,等. 蒙古国塔南凹陷南屯组水下扇的沉积演化特征[J].吉林大学学报(地球科学版),2012, 42(增刊1):1-7.LIU Zhaojun, ZHANG Di, JIA Jianliang, et al. Characteristics of sedimentary evolvement of subaqueous fan in Nantun Formation of Tanan Depression from Mongolia[J].Journal Of Jilin University (Earth Science Edition), 2012, 42(S1):1-7.
[10]单敬福,纪友亮,金利红,等. 塔南—南贝尔凹陷南屯组沉积相特征[J].中南大学学报(自然科学版),2013, 44(1):241-250.SHAN Jingfu, JI Youliang, JIN Lihong, et al. Sedimentary facies characteristics of Nantun Formation in Tanan-Southbell Depression[J].Journal of Central South University (Science and Technology), 2013, 44(1):241-250.
[11]王显东,贾承造,蒙启安,等. 塔南断陷陡坡带南屯组岩性油藏形成与分布的主控因素[J].石油学报,2011, 32(4):564-572.WANG Xiandong, JIA Chengzao, MENG Qi’an, et al. Main controlling factors of the formation and distribution of Nantun Formation lithologic reservoirs in the abrupt slope zone, Tanan Sag[J].Acta Petrolei Sinica, 2011, 32(4):564-572.
[12]闫磊,刘招君,方石,等. 塔南凹陷南屯组—大磨拐河组构造特征及与油气藏关系[J].石油天然气学报,2013, 35(1):1-5.YAN Lei, LIU Zhaojun, FANG Shi, et al. Structural feature of Nantun-Damoguaihe Formation in Tanan Depression and its relation with oil-gas reservoir[J].Journal of Oil and Gas Technology, 2013, 35(1):1-5.
[13]刘招君. 湖泊水下扇沉积特征及影响因素:以伊通盆地莫里青断陷双阳组为例[J].沉积学报,2003, 21(1):148-154.LIU Zhaojun.Subaqueous fan sedimentary characteristics and influence factors: A case study of Shuangyang Formation in Moliqing Fault Subsidence of Yitong Basin[J].Acta Sedimentologica Sinica, 2003, 21(1):148-154.
[14]张革,孙效东,刘赫,等. 塔木察格盆地塔南凹陷南屯组储层特征[J]. 大庆石油地质与开发,2014,33 (6):26-30.ZHANG Ge,SUN Xiaodong,LIU He, et al. Characteristics of Nantun-Formation reservoirs in Tanan Sag of Tamutsag Basin[J]. Petroleum Geology & Oilfield Development in Daqing,2014,33 (6):26-30.
[15]陈玮常,漆家福,姜洪福,等. 蒙古国东方省海塔盆地塔南凹陷断裂特征及其油气意义[J].古地理学报,2013, 15(4):539-550.CHEN Weichang, QI Jiafu, JIANG Hongfu, et al.Characteristics of fault structure in Tanan Sag,Haita Basin in Dornod Aymag, Mongolia and its hydrocarbon significance[J].Journal of Palaeogeography, 2013, 15(4):539-550.
[16]陈均亮,吴河勇,朱德丰,等.海拉尔盆地构造演化及油气勘探前景[J].地质科学,2007, 42(1):147-158.CHEN Junliang, WU Heyong, ZHU Defeng, et al. Tectonic evolution of the Hailar Basin and its potentials of oil-gas exploration[J].Chinese Journal of Geology,2007, 42(1):147-158.
[17]樊晓东,李忠权,刘剑营. 海拉尔盆地贝中油田南一段沉积微相特征[J]. 大庆石油地质与开发,2015,34 (2):34-40.FAN Xiaodong,LI Zhongquan,LIU Jianying.Characteristics of the sedimentary microfacies in Member Nan-1 of Beizhong Oilfield in Hailer Basin[J]. Petroleum Geology & Oilfield Development in Daqing,2015,34 (2):34-40.
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