二连盆地胜利煤田含煤地层埋藏史及热史分析
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摘要
根据地层岩性数据及热物理参数,利用50组镜质组反射率数据、46组泥岩声波时差数据以及3个钻孔的地温数据,重建胜利煤田晚白垩世以来的埋藏史、热演化史和生烃史。结果表明:1)胜利煤田表现出"早期沉降伴随抬升,晚期终止"的埋藏特征。阿尔善组至都红木组1段沉积期,研究区处于加速—快速沉降期,其沉积末期发生第一期抬升剥蚀,剥蚀量约410 m;都红木组2段至赛罕塔拉沉积期,研究区再次进入快速沉降期,而后发生第二期抬升剥蚀,剥蚀量约580 m;赛汗塔拉沉积末期至今,研究区处于缓慢—终止沉降期;2)阿尔善期至都红木1段沉积期,研究区地温逐渐升高,在都红木组1段沉积末期地温达到峰值约90℃,随后在第一期抬升剥蚀作用下,地温迅速下降;在赛汗塔拉组沉积期地温迅速升高,沉积末期达到峰值120℃,处于异常高地温状态,而后经过第二期抬升剥蚀作用,地温下降,此后研究区地温处于稳定阶段;3)烃源岩成熟度受控于古地温,阿尔善组和腾格尔组烃源岩处于低成熟—成熟阶段,有一定的生烃潜力,而都红木组和赛汗塔拉组处于未成熟阶段,几乎无生烃潜力。
According to the stratigraphic lithologic data and thermal physical parameters,we use 50 sets of vitrinite reflectance data,46 sets of mudstone sonic slowness data and geothermal data of 3 boreholes to reconstruct the burial history,thermal evolution history and hydrocarbon generation history of the Shengli coalfield since Late Cretaceous period.The result shows:1)The burial characteristics of"the subsidence of the study area was accompanied by uplifting in the early stage and stopped in the late stage"are expressed in the Shengli coalfield.From Aershan period to early Duhongmu period,the study area entered the accelerated rapid subsidence progress,and the first stage of uplifting and erosion occurred at the end of this sedimentary period.The amount of denudation was about 410 m.From late Duhongmu period to Saihantala period,the study area once again entered the rapid subsidence progress,and then it was in the second stage of uplifting,and the denudation amount was about 580 m.Since late deposition of the Saihantala period,the study area was in a slow-ending subsidence period;2)From Aershan period to early Duhongmu period,the geotemperature of the study area gradually increased.At the end of early Duhongmu period,the geotemperature reached a peak value of about 90℃,and then entered the first stage of uplifting,the temperature decreased rapidly.In the Saihantala period,the geotemperature increased rapidly and reached the peak of 120℃at the end of the deposition,in abnormally high temperature state,and then entered the second stage of uplifting,the geotemperature decreased.After that it was in the stable stage in study area;3)The maturity of source rocks was controlled by paleo geotemperature.The hydrocarbons source rocks of the Aershan Formation and the Tenggeer Formation were in a low to medium maturity stage and had a certain potential for hydrocarbons generation.The Duhongmu Formation and Saihantala Formation should be in immature stage and had almost no hydrocarbon generating potential.
According to the stratigraphic lithologic data and thermal physical parameters,we use 50 sets of vitrinite reflectance data,46 sets of mudstone sonic slowness data and geothermal data of 3 boreholes to reconstruct the burial history,thermal evolution history and hydrocarbon generation history of the Shengli coalfield since Late Cretaceous period.The result shows:1)The burial characteristics of"the subsidence of the study area was accompanied by uplifting in the early stage and stopped in the late stage"are expressed in the Shengli coalfield.From Aershan period to early Duhongmu period,the study area entered the accelerated rapid subsidence progress,and the first stage of uplifting and erosion occurred at the end of this sedimentary period.The amount of denudation was about 410 m.From late Duhongmu period to Saihantala period,the study area once again entered the rapid subsidence progress,and then it was in the second stage of uplifting,and the denudation amount was about 580 m.Since late deposition of the Saihantala period,the study area was in a slow-ending subsidence period;2)From Aershan period to early Duhongmu period,the geotemperature of the study area gradually increased.At the end of early Duhongmu period,the geotemperature reached a peak value of about 90℃,and then entered the first stage of uplifting,the temperature decreased rapidly.In the Saihantala period,the geotemperature increased rapidly and reached the peak of 120℃at the end of the deposition,in abnormally high temperature state,and then entered the second stage of uplifting,the geotemperature decreased.After that it was in the stable stage in study area;3)The maturity of source rocks was controlled by paleo geotemperature.The hydrocarbons source rocks of the Aershan Formation and the Tenggeer Formation were in a low to medium maturity stage and had a certain potential for hydrocarbons generation.The Duhongmu Formation and Saihantala Formation should be in immature stage and had almost no hydrocarbon generating potential.
引文
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[11]黄文辉,万欢,杜刚,等.内蒙古自治区胜利煤田煤-锗矿床元素地球化学性质研究[J].地学前缘,2008,15(4):56-64.[Huang Wenhui,Wan Huan,Du Gang,et al.Research on elemental geochemical characteristics of coal-Ge deposit in Shengli coalfield,Inner Mongolia,China[J].Earth Science Frontiers,2008,15(4):56-64.]
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[13]范国强.胜利煤田东区井田地质及煤的赋存规律[J].科技创业月刊,2011(4):162-163.[Fan Guoqiang.Geology and occurrence of coal in Shengli coal field[J].Pioneering with Science&Technology Monthly,2011(4):162-163.]
[14]Wei S Y,Qin M K,Li Y X,et al.Late Mesozoic-Cenozoic tectono-sedimentary evolution and sandstone-hosted uranium mineralization of the Erlian Basin[M]//Mao J W,Bierlein F P.Mineral deposit research:meeting the global challenge.Berlin Heidelberg:Springer,2005:319-322.
[15]丁修建,柳广弟,查明,等.沉积速率与烃源岩有机质丰度关系:以二连盆地为例[J].天然气地球科学,2015,26(6):1076-1085.[Ding Xiujian,Liu Guangdi,Zha Ming,et al.Relationship between sedimentation rate and organic matter abundance of source rocks:A case study of Erlian Basin[J].Natural Gas Geoscience,2015,26(6):1076-1085.]
[16]王建,王权,钟雪梅,等.二连盆地优质烃源岩发育特征及成藏贡献[J].石油实验地质,2015,37(5):641-647.[Wang Jian,Wang Quan,Zhong Xuemei,et al.Characteristics of high-quality hydrocarbon source rocks and their contributions to reservoirs in the Erlian Basin[J].Petroleum Geology&Experiment,2015,37(5):641-647.]
[17]尹晓贺.川中地区上三叠统须家河组埋藏史恢复及重点构造气水分布控制因素探讨[D].成都:西南石油大学,2006.[Yin Xiaohe.Reconstruction of burial history of the Upper Triassic Xujiahe Formation in the middle of Sichuan area and discussion on controlling factors of gas-water distribution in key structure[D].Chengdu:Southwest Petroleum University,2006.]
[18]尹志胜.江西省富有机质页岩层系构造埋藏史与页岩气富集[D].徐州:中国矿业大学,2015.[Yin Zhisheng.Tectonic and burial history of organic matter rich shale formations and shale gas enrichment in Jiangxi province[D].Xuzhou:China University of Mining and Technology,2015.]
[19]李岩,王云鹏,赵长毅,等.四川盆地上三叠统须家河组烃源岩埋藏史及热演化特征[J].地质通报,2013,32(11):1798-1805.[Li Yan,Wang Yunpeng,Zhao Changyi,et al.Burial history and thermal evolution characteristics of source rocks of the Upper Triassic Xujiahe Formation,Sichuan Basin[J].Geological Bulletin of China,2013,32(11):1798-1805.]
[20]刘景东,蒋有录.东濮凹陷北部地区古近系烃源岩热演化特征及其主控因素[J].中国地质,2013,40(2):498-507.[Liu Jingdong,Jiang Youlu.Thermal evolution characteristics of Paleogene source rocks and their main controlling factors in northern part of Dongpu depression[J].Geology in China,2013,40(2):498-507.]
[21]丁超.鄂尔多斯盆地东北部热演化史与天然气成藏期次研究[D].西安:西北大学,2010.[Ding Chao.Thermal evolution and Petroleum-charging times in the northeast area of Ordos Basin[D].Xi’an:Northwestern University,2010.]
[22]任战利.中国北方沉积盆地构造热演化史恢复及其对比研究[D].西安:西北大学,1998.[Ren Zhanli.Comparative research on tectonical thermal history of sedimentary basins in the North China[D].Xi’an:Northwestern University,1998.]
[23]Barker C E,Pawlewicz M J.The correlation of vitrinite reflectance with maximum temperature in Humic organic matter[M]//Buntebarth G,Stegena L.Paleogeothermics.Berlin Heidelberg:Springer,1986:79-93.
[24]Zuo Y H,Wang C C,Tang S L,et al.Mesozoic and Cenozoic thermal history and source rock thermal evolution of the Baiyinchagan sag,Erlian Basin,northern China[J].Journal of Petroleum Science and Engineering,2016,139:171-184.
[2]王成善,李祥辉.沉积盆地分析原理与方法[M].北京:高等教育出版社,2003:12-46.[Wang Chengshan,Li Xianghui.Analysis principle and method of sedimentary basin[M].Beijing:Higher Education Press,2003:12-46.]
[3]王崇敬,马施民,郭彪,等.二连盆地群早白垩世含煤地层特征及对比分析[J].煤炭科学技术,2014,42(4):106-108,125.[Wang Chongjing,Ma Shimin,Guo Biao,et al.Analysis on characteristics and correlation of coal-bearing stratigraphic of Lower Cretaceous in Erlian Basins[J].Coal Science and Technology,2014,42(4):106-108,125.]
[4]Ding X J,Liu G D,Zha M,et al.Relationship between total organic carbon content and sedimentation rate in ancient lacustrine sediments,a case study of Erlian Basin,northern China[J].Journal of Geochemical Exploration,2015,149:22-29.
[5]邓已寻.二连盆地白音查干凹陷成烃机理及其对成藏控制作用的研究[D].北京:中国地质大学(北京),2013:13-20.[Deng Yixun.Study on hydrocarbon generation mechanism and its controlling factor on hydrocarbon accumulation in Baiyinchagan depression,Erlian Basin[D].Beijing:China University of Geosciences(Beijing),2013:13-20.]
[6]余学中,薛春纪,丛丽娟,等.二连浩特一带境内外构造-成矿带的衔接问题浅析[J].地学前缘,2011,18(2):231-241.[Yu Xuezhong,Xue Chunji,Cong Lijuan,et al.A study of the connection of faults and metallogenic belts between Erenhot region,China and South Gobi,Mongolia[J].Earth Science Frontiers,2011,18(2):231-241.]
[7]Ding X J,Liu G D,Zha M,et al.Geochemical characterization and depositional environment of source rocks of small fault basin in Erlian Basin,northern China[J].Marine and Petroleum Geology,2016,69:231-240.
[8]王东东,邵龙义,张强,等.二连盆地群下白垩统含煤地层聚煤特征分析[J].中国矿业大学学报,2013,42(2):257-265.[Wang Dongdong,Shao Longyi,Zhang Qiang,et al.Analysis of coal-accumulating characteristics in the Lower Cretaceous coal-containing strata of the Erlian Basin group[J].Journal of China University of Mining&Technology,2013,42(2):257-265.]
[9]赵贤正,降栓奇,淡伟宁,等.二连盆地阿尔凹陷石油地质特征研究[J].岩性油气藏,2010,22(1):12-17.[Zhao Xianzheng,Jiang Shuanqi,Dan Weining,et al.Petroleum geologic characteristics of Artala sag in Erlian Basin[J].Lithologic Reservoirs,2010,22(1):12-17.]
[10]Safonova L,Seltmann R,Kr9ner A,et al.A new concept of continental construction in the central Asian Orogenic Belt:compared to actualistic examples from the Western Pacific[J].Episodes,2011,34(3):186-196.
[11]黄文辉,万欢,杜刚,等.内蒙古自治区胜利煤田煤-锗矿床元素地球化学性质研究[J].地学前缘,2008,15(4):56-64.[Huang Wenhui,Wan Huan,Du Gang,et al.Research on elemental geochemical characteristics of coal-Ge deposit in Shengli coalfield,Inner Mongolia,China[J].Earth Science Frontiers,2008,15(4):56-64.]
[12]朱杰,马延军,唐学民,等.胜利煤田煤层气储量预测[J].中国煤炭地质,2008,20(12):10-11.[Zhu Jie,Ma Yanjun,Tang Xuemin,et al.Shengli coalfield CBM reserve prediction[J].Coal Geology of China,2008,20(12):10-11.]
[13]范国强.胜利煤田东区井田地质及煤的赋存规律[J].科技创业月刊,2011(4):162-163.[Fan Guoqiang.Geology and occurrence of coal in Shengli coal field[J].Pioneering with Science&Technology Monthly,2011(4):162-163.]
[14]Wei S Y,Qin M K,Li Y X,et al.Late Mesozoic-Cenozoic tectono-sedimentary evolution and sandstone-hosted uranium mineralization of the Erlian Basin[M]//Mao J W,Bierlein F P.Mineral deposit research:meeting the global challenge.Berlin Heidelberg:Springer,2005:319-322.
[15]丁修建,柳广弟,查明,等.沉积速率与烃源岩有机质丰度关系:以二连盆地为例[J].天然气地球科学,2015,26(6):1076-1085.[Ding Xiujian,Liu Guangdi,Zha Ming,et al.Relationship between sedimentation rate and organic matter abundance of source rocks:A case study of Erlian Basin[J].Natural Gas Geoscience,2015,26(6):1076-1085.]
[16]王建,王权,钟雪梅,等.二连盆地优质烃源岩发育特征及成藏贡献[J].石油实验地质,2015,37(5):641-647.[Wang Jian,Wang Quan,Zhong Xuemei,et al.Characteristics of high-quality hydrocarbon source rocks and their contributions to reservoirs in the Erlian Basin[J].Petroleum Geology&Experiment,2015,37(5):641-647.]
[17]尹晓贺.川中地区上三叠统须家河组埋藏史恢复及重点构造气水分布控制因素探讨[D].成都:西南石油大学,2006.[Yin Xiaohe.Reconstruction of burial history of the Upper Triassic Xujiahe Formation in the middle of Sichuan area and discussion on controlling factors of gas-water distribution in key structure[D].Chengdu:Southwest Petroleum University,2006.]
[18]尹志胜.江西省富有机质页岩层系构造埋藏史与页岩气富集[D].徐州:中国矿业大学,2015.[Yin Zhisheng.Tectonic and burial history of organic matter rich shale formations and shale gas enrichment in Jiangxi province[D].Xuzhou:China University of Mining and Technology,2015.]
[19]李岩,王云鹏,赵长毅,等.四川盆地上三叠统须家河组烃源岩埋藏史及热演化特征[J].地质通报,2013,32(11):1798-1805.[Li Yan,Wang Yunpeng,Zhao Changyi,et al.Burial history and thermal evolution characteristics of source rocks of the Upper Triassic Xujiahe Formation,Sichuan Basin[J].Geological Bulletin of China,2013,32(11):1798-1805.]
[20]刘景东,蒋有录.东濮凹陷北部地区古近系烃源岩热演化特征及其主控因素[J].中国地质,2013,40(2):498-507.[Liu Jingdong,Jiang Youlu.Thermal evolution characteristics of Paleogene source rocks and their main controlling factors in northern part of Dongpu depression[J].Geology in China,2013,40(2):498-507.]
[21]丁超.鄂尔多斯盆地东北部热演化史与天然气成藏期次研究[D].西安:西北大学,2010.[Ding Chao.Thermal evolution and Petroleum-charging times in the northeast area of Ordos Basin[D].Xi’an:Northwestern University,2010.]
[22]任战利.中国北方沉积盆地构造热演化史恢复及其对比研究[D].西安:西北大学,1998.[Ren Zhanli.Comparative research on tectonical thermal history of sedimentary basins in the North China[D].Xi’an:Northwestern University,1998.]
[23]Barker C E,Pawlewicz M J.The correlation of vitrinite reflectance with maximum temperature in Humic organic matter[M]//Buntebarth G,Stegena L.Paleogeothermics.Berlin Heidelberg:Springer,1986:79-93.
[24]Zuo Y H,Wang C C,Tang S L,et al.Mesozoic and Cenozoic thermal history and source rock thermal evolution of the Baiyinchagan sag,Erlian Basin,northern China[J].Journal of Petroleum Science and Engineering,2016,139:171-184.
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