勃利盆地的构造演化与控气特征
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摘要
针对勃利盆地构造演化是如何对区内早白垩系含煤地层煤层气生、储、盖、保特征产生影响的问题,构造因素直接或间接控制着从含煤地层形成至煤层气生成聚集过程中的每个环节,以聚煤期后构造及其演化特征为重点对勃利盆地沉积埋藏史、受热史和生烃史的综合研究,分析不同演化阶段的构造特征对煤层气富集的控制作用,评价岩浆侵入对煤层气富集的影响。结果表明,勃利盆地构造背景相对稳定,利于煤层气富集,煤层气生成规律为起伏式加深型,燕山中期为主要生气阶段,燕山晚期达到生气最高峰,燕山末期由于盆地东部抬升剥蚀作用强烈,导致含气量低于西部。通过揭示勃利盆地构造控气特征,对盆地煤层气成藏模式研究、选区评价起到一定的推动和指导作用。
This paper building on the understanding that tectonic factors provide direct or indirect controls over the aspects ranging from the formation of coal-bearing strata to the generation and accumulation of coalbed methane introduces depositional and burial history, thermal history, and hydrocarbon generation history after coal-forming period in the Boli Basin and provides an analysis of tectonic and igneous invasion controls on the CBM accumulation in an effort to understand the way tectonic evolution influences the source, reservoir, cap, and preservation of CBM within Early Cretaceous coal-bearing strata in the Boli Basin. The study indicates that the Boli Basin boasts a relatively stable tectonic setting favorable for CBM accumulation, governed by the undulating deepening model in which a major gas generation occurs at the middle Yanshanian stage; the maximum gas generation happens at the late Yanshanian stage; and gas content is lower in the eastern region than in the western region, due to the stronger uplift and denudation of eastern region in Boli Basin at the end of late Yanshanian stage. The research into the characteristics behind tectonic gas control in Boli Basin could inform the CBM accumulation model and selection evaluation.
This paper building on the understanding that tectonic factors provide direct or indirect controls over the aspects ranging from the formation of coal-bearing strata to the generation and accumulation of coalbed methane introduces depositional and burial history, thermal history, and hydrocarbon generation history after coal-forming period in the Boli Basin and provides an analysis of tectonic and igneous invasion controls on the CBM accumulation in an effort to understand the way tectonic evolution influences the source, reservoir, cap, and preservation of CBM within Early Cretaceous coal-bearing strata in the Boli Basin. The study indicates that the Boli Basin boasts a relatively stable tectonic setting favorable for CBM accumulation, governed by the undulating deepening model in which a major gas generation occurs at the middle Yanshanian stage; the maximum gas generation happens at the late Yanshanian stage; and gas content is lower in the eastern region than in the western region, due to the stronger uplift and denudation of eastern region in Boli Basin at the end of late Yanshanian stage. The research into the characteristics behind tectonic gas control in Boli Basin could inform the CBM accumulation model and selection evaluation.
引文
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[13] 叶建平,秦勇,林大杨.中国煤层气资源[M].徐州:中国矿业大学出版社,1998.
[14] Wang Q,Bagdassarov N,Ji S.The Moho as a transition zone:A revisit from seismic and electrical properties of minerals and rocks[J].Tectonophysics,2013,609:395-422.
[15] Cai Y,Liu D,Yao Y,et al.Geological controls on prediction of coalbed methane of No.3 coal seam in Southern Qinshui Basin,North China[J].International Journal of Coal Geology,2011,88(2/3):101-112.
[16] Zhang L,Luo X,Vasseur G,et al.Evaluation of geological factors in characterizing fault connectivity during hydrocarbon migration:Application to the Bohai Bay Basin[J].Marine and Petroleum Geology,2011,28(9):1634-1647.
[17] 孙伟.勃利煤田地质特征及找煤方向[J].煤炭技术,2006,25(3):93-96.
[18] 赵霞,于兴河,易荣龙,等.三江盆地构造演化分析[J].内蒙古石油化工,2007(5):310-313.
[19] 方爱民,侯泉林,琚宜文,等.不同层次构造活动对煤层气成藏的控制作用[J].中国煤田地质,2005,17(4):15-20.
[20] 王双明,王晓刚,范立民.韩城矿区煤层气地质条件及赋存规律[M].北京:地质出版社,2009.
[21] Yao Y B,Liu D M,Yan T T.Geological and hydrogeological controls on the accumulation of coalbed methane in the Weibei field,southeastern Ordos Basin[J].International Journal of Coal Geology,2014,27(4):214-221.
[22] Richard H,Groshong C P,Marcella R.McIntyre.Structural controls on fractured coal reservoirs in the southern Appalachian Black Warrior foreland basin[J].Journal of Structural Geology,2008(9):355-359.
[2] 王礼全,邓宏刚.开发利用煤层气资源对改善生态环境的意义[J].重庆石油高等专科学校学报,2002,4(4):25-27.
[3] 焦作矿业学院瓦斯地质研究室.瓦斯地质概论[M].北京:煤炭工业出版社,1991.
[4] 胡殿明,林柏泉.煤层气瓦斯赋存规律及防治技术[M].徐州:中国矿业大学出版社,2006.
[5] 孙平.煤层气成藏条件与成藏过程分析[D].成都:成都理工大学,2007.
[6] Magdalena D,Edyta J.Character and structu-ral evolution of the Maa ka Fault in the Tatra Mts,Carpath-ians,Poland[J].Acta Geologica Polonica,2013,27(6):475-488.
[7] Ding S,Liu J,Xu B.Factors influencing coal bed methane reservoir in southeastern edge of Ordos Basin,China[J].Energy Exploration & Exploitation,2012,30(4):677-688.
[8] Meng Y,Tang D,Xu H,et al.Geological controls and coalbed methane production potential evaluation:a case study in Liulin area,eastern Ordos Basin,China[J].Journal of Natural Gas Science and Engineering,2014,21:95-111.
[9] 李志强.重庆沥鼻峡背斜煤层气富集成藏规律及有利区带预测研究[D].重庆:重庆大学,2008.
[10] 王红岩,刘洪林,赵庆波.煤层气富集成藏规律[M].北京:石油工业出版社,2005.
[11] 王红岩,张建博,李景明,等.中国煤层气富集成藏规律[J].天然气工业,2004,24(5):11-13.
[12] 刘成林,汪泽成,冉启贵,等.煤层气藏保存条件评价[J].天然气勘探与开发.1998,21(1):1-5.
[13] 叶建平,秦勇,林大杨.中国煤层气资源[M].徐州:中国矿业大学出版社,1998.
[14] Wang Q,Bagdassarov N,Ji S.The Moho as a transition zone:A revisit from seismic and electrical properties of minerals and rocks[J].Tectonophysics,2013,609:395-422.
[15] Cai Y,Liu D,Yao Y,et al.Geological controls on prediction of coalbed methane of No.3 coal seam in Southern Qinshui Basin,North China[J].International Journal of Coal Geology,2011,88(2/3):101-112.
[16] Zhang L,Luo X,Vasseur G,et al.Evaluation of geological factors in characterizing fault connectivity during hydrocarbon migration:Application to the Bohai Bay Basin[J].Marine and Petroleum Geology,2011,28(9):1634-1647.
[17] 孙伟.勃利煤田地质特征及找煤方向[J].煤炭技术,2006,25(3):93-96.
[18] 赵霞,于兴河,易荣龙,等.三江盆地构造演化分析[J].内蒙古石油化工,2007(5):310-313.
[19] 方爱民,侯泉林,琚宜文,等.不同层次构造活动对煤层气成藏的控制作用[J].中国煤田地质,2005,17(4):15-20.
[20] 王双明,王晓刚,范立民.韩城矿区煤层气地质条件及赋存规律[M].北京:地质出版社,2009.
[21] Yao Y B,Liu D M,Yan T T.Geological and hydrogeological controls on the accumulation of coalbed methane in the Weibei field,southeastern Ordos Basin[J].International Journal of Coal Geology,2014,27(4):214-221.
[22] Richard H,Groshong C P,Marcella R.McIntyre.Structural controls on fractured coal reservoirs in the southern Appalachian Black Warrior foreland basin[J].Journal of Structural Geology,2008(9):355-359.