山西白额晚古生代沉积特征与煤层气烃源岩影响研究
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摘要
研究区位于华北聚煤凹陷河东煤田南部,区内构造变形微弱,基本构造形态为走向NE-NNE、倾向NW的单斜构造,地层倾角一般为3-8°。区内地层发育较全,沉积稳定,晚古生代石炭二叠系含煤岩系含煤丰富,为我国主要的煤矿床开发区。
     通过对钻井岩心、测井曲线、粒度分析及镜下薄片鉴定等综合分析研究,运用层序地层学的基本原理和研究方法,根据沉积基准面变化规律,并结合华北盆地其它地区的研究成果,建立了白额勘探区晚古生代石炭二叠系含煤岩系层序地层格架,划分为三个超层序,九个三级层序。
     沉积基准面升降引起可容纳空间的变化,不仅形成了明显的旋回地层,也使聚煤作用显示出明显的阶段性。在研究区石炭二叠系含煤岩系充填序列中,由于受构造、气候和物源供应的共同影响,石炭系本溪组、太原组潮坪沉积体系发育,区内7~#、10~#、12~#煤层主要为潮坪泥炭沼泽化而形成。浅水三角洲发育于二叠系山西组,在浅水三角洲中由于盆地坡度较缓,水体浅而较稳定,一般三角洲平原发育较好,规模也较大,在浅水三角洲平原分流间泥炭沼泽发育,形成本区厚度较大、分布稳定、具工业开采价值的2~#、3~#煤层。二叠系中晚期石盒子组和石千峰组为陆相河湖沉积,由于气候干燥,形成灰、灰白、紫红等杂色碎屑岩系。
     本区晚古生代基准面升降旋回中均有煤层(或煤线)发育,但聚煤作用发育的程度及分布相差很大,具有工业意义的煤层主要形成于超层序Ⅰ的长周期基准面上升半旋回。在超层序Ⅰ的Sq2、Sq3和Sq4层序海侵体系域,形成全区普遍发育的可采煤层。
     不同的沉积环境形成的煤层对煤质有重要的影响,由此影响到煤层的生气量,通过主采2~#、3~#和10~#煤层煤质分析和煤层气解析实验,表明研究区潮坪泥炭沼泽化下形成的10~#煤层要比浅水三角洲体系2~#、3~#煤中镜质组含量高,10~#煤层的生气能力高于2~#、3~#煤层。
The study area is located in south Hedong coalfield in north China accumulation coal depression, a weak local structural deformation, the basic structural form for the trend NE-NNE, tend to NW monocline structure, formation dip generally 3 ~ 8°. Stratigraphic development of the region is complete, sedimentation stability. Late Paleozoic Permo-Carboniferous coal-bearing rocks is full of coal . It is China's major coal-bed zone.
     By drilling cores, logging curve, particle size analysis and microscopic identification , using sequence stratigraphy of the basic principles and research methods, according to deposition of base-level variation, and combined with the research results of other parts of North China basin, we set up the sequence stratigraphic framework of the Late Paleozoic Permo-Carboniferous coal bearing formation.It is divided into three super-sequences, nine three sequences.
     The changes of accommodation space is because of the lift and down of the deposition of base-level space .Not only form a clear cyclostratigraphy ,but also made coal accumulation in a significant stage. In the study area, Carboniferous-Permian coal-bearing rocks filling sequence, due to the combined effect of construction, material source of supply and climate, the Carboniferous Benxi, Taiyuan tidal flat depositional system development. 7 #, 10 #, 12 # coal seam is mainly tidal flat peat swamp formed. Shallow-water delta is formed in the Permian Shanxi. It forms in the basin flat slope, water more shallow and stable,so generally well-developed delta plain and a larger scale. Distributary interchannel depression of the shallow-water delta form the peat swamp. In the peat swam form a larger thickness ,the distribution of stability, with the value of industrial exploitation 2 #, 3 # coal seam. Middle and Late Permian is the continental river and lake deposits, due to dry climate and forming gray, offwhite, purple and other variegated clastic rocks. The lifting of the Late Paleozoic base-level cycles can form coal seam (or coal line), but the extent of development of coal accumulation and distribution varied widely. with industrial significance of the main coal seam formed in the up half-cycle of ultra-long-period in the super sequenceⅠ.That is, the continuous deposition of base-level elevation and the persistence of accommodation space as a guarantee .The accommodation space of coal swamps of the accommodation space is increasing, and water table rise, stability sedimentation become stronger. Because the supply of weakening, combined with the climate, tidal flat become peat swamp, Sq2, Sq3 and Sq4 the transgresss systems tract of sequence to form the general development of the region's coal seam in the super-sequenceⅠ.
     Because the coal seam form in different sedimentary environments , coal quality is different .thus affecting the amount of coal seam bed is made. through coal quality analysis of the 2 #,3 # and 10 # coal seam and cbm analysis experiments ,showing Vitrinite Amount of 10# coal seam which formed in tidal flat higher than 2 #, 3 # coal seam which formed in peat swamp .10 # coal seam of making cbm capacity is higher than 2 #, 3 # coal seam.
引文
[1]中国地质矿产信息研究院.根据测井记录、岩心和露头进行硅质碎屑岩层序地层学研究[M].北京:中国地质矿产信息研究院,1993.
    [2] Vail P R, Aude mard F, Bowman S A, et al. The stratigraphic signatures to tectonics, eustasy and sedimentation: an overview[C]. In: Einsele, ed. Cycles and events in stratigraphy. Berlin Heidelberg: Springer-Verlag,1991:615~659.
    [3]陆克政,朱筱敏,漆家福.含油气盆地分析[M].东营:石油大学出版社,2001,5.
    [4]刘焕杰,贾玉如,龙耀珍,等.华北石炭纪含煤建造的陆表海堡岛体系特点及其事件沉积[J].沉积学报, 1987,5(3):73~80.
    [5]刘焕杰.潮坪成煤环境初论—三汇坝地区晚二叠世龙潭组含煤建造沉积环境模式[J].中国矿业学院学报, 1982 ,3(2): 61~71.
    [6]邵龙义,鲁静,汪浩,张鹏飞.中国含煤岩系层序地层学研究进展[J].沉积学报,2009,4(5):23~26.
    [7]张鹏飞,刘焕杰,卓越,等.试论局限台地碳酸盐岩型含煤建造—桂中马滩一带合山组的某些沉积特征[J].沉积学报, 1983,1(3): 16~28.
    [8]张泓,李恒堂,熊存卫,等.中国西北侏罗纪含煤地层与聚煤规律[M].北京:地质出版社, 1998.
    [9]邵龙义,肖正辉,何志平,等.晋东南沁水盆地石炭二叠纪煤岩系古地理及聚煤作用研究[J].古地理学报,2006, 8(1): 43~52.
    [10]刘焕杰,桑树勋,施健.成煤环境的比较沉积学研究—海南岛红树林潮坪与红树林泥炭[M].江苏徐州:中国矿业大学出版社.1997.
    [11] Hao Liming, Shao Longy,i Shi Zongbo,et al. The application ofdepostional cycle frequency curve to episodic coal accumulation:W ith an example from the Upper Permian in SouthwestChina[J].Journal of Palaeogeography, 2000,2(4): 12~19.
    [12] BohacsK, Suter.Sequence stratigraphic distribution of coaly rocks: Fundamental controls and paralic examples [J]. American Association of Petroleum Geologists Bulletin, 1997,81:1612~1639.
    [13]邵龙义,陈家良,李瑞军.广西合山晚二叠世碳酸盐岩型煤系层序地层分析[J].沉积学报, 2003,21(1): 168~174.
    [14]邵龙义等.黔西织纳地区晚二叠世含煤岩系层序地层及海平面变化[J].地学探索, 1993,8: 1~11.
    [15]邵龙义,张鹏飞,何志平.中国煤和含煤岩系沉积学研究进展和展望[C].北京:中国矿物岩石地球化学学会第十届学术年会论文集,2005.
    [16]刘占勇,刘向阳.山西省临汾市白额南区煤炭详查报告[R].邯郸:中国地质总局第一勘探局地质勘察院.2006,8.
    [17] Van wagoner J C. etc. Siliciclastic sequence stratigraphy in well logs, cores, and outcrops: concepts for high-resolution correlation of time and faces[J]. AAPG, Methods in exploration series, 1990,5(7):453~459.
    [18] Van Wagoner J C, Jones Cliver R. High frequency sequence-stratigraphy and facies architecture of the Sego Sandstone in the Book Cliffs of western Colorado and eastern Utah[A]. 1991:1~10.
    [19] Galloway W E. Genetic stratigraphy sequence in basin anlysis I: Architecture and genesis of flooding-surface bounded depositional unites[J]. AAPG/Bull,1989,73:125~142.
    [20] P.R.Vail .The stratigraphic signatures of Tectonics,Eustasy and sedimemtation- an overview[M].Einsele et al.(ed.)Cycles and Event in:Straigraphy. Springer -verlag,1991.
    [21] Cross T A . High-resolution stratigraphic correlation from the perspective of base-level cycles and sediment accommodation[M]. North west Europe conference of sequence stratigraphy,1994.
    [22]胡志方.三江盆地绥滨坳陷中生界层序地层与有利目标预测[D].北京:中国地质大学,2006.
    [23]杜振川.百色盆地早第三纪高分辨率层序地层特征及聚煤作用[J].煤炭学报,2001,26(5):15~18.
    [24]张海峰.新疆和田地区层序地层学综合研究[D].北京:中国地质大学2003.
    [25] Van Wagoner J C. An overview of fundamental of sequence stratigraphy and key definitions[J]. SEPM special publication,1988,42:39~45.
    [26]张婷婷.黄骅坳陷孔南地区层序地层学研究[D].长春:吉林大学, 2009.
    [27]范洪军,胡尖山.—新城地区长6沉积相研究与油藏描述[D].北京:中国地质大学,2005.
    [28]王良忱.张金亮沉积环境和沉积相[M].北京:石油工业出版社,1996.6.
    [29]杜静霞.惠民凹陷西部沙三段层序地层学与隐蔽油气藏预测研究[D].北京:中国地质大学,2005.
    [30]蔡厚安.辽西八道壕煤盆地层序地层和火山岩层位及找煤远景研究[D].北京:中国地质大学,2009.
    [31] Folk,R.M.and Ward W.C.Brazos river bar :A Study of significance of grain size Parameteres[J].Jour.Sed.Petro.1957,7:3~27.
    [32]郑俊茂.陆源碎屑沉积环境的粒度标志[M].北京:中国地质大学,1982,10.
    [33]李增学,魏久传,王明镇.华北南部晚古生代陆表海盆地层序地层格架与海平面变化[J].岩相古地理, 1996, 16(5): 1~11.
    [34]李增学.内陆表海聚煤盆地的层序地层分析—华北内陆表海聚煤盆地的研究进展[J].地球科学进展, 1994.9(6): 65~70.
    [35] Li Zengxue,Wei Jiuchuan,li Shouchuan ,etal . The Characteristics of Sequence Stratigraphy in Epicontinental Basin[J]. The International Science Publishers, 1997,30(8):141~151.
    [36] Miall,A.D. Stratigraphic sequences and their chronostratigraphic correlation[J]. Journal of Sedimentary Petrology, 1991,(61):497~505.
    [37] Miall,A.D. Principles of Sedimentary Basin Analysis[C].Springer-Verlag New York Inc,U.S.A, 1990.
    [38]刘小琼.滕北矿区太原组沉积特征与聚煤规律研究[D].青岛:山东科技大学,2007.
    [39]柳汉丰.山东汶宁地区石炭—二叠系高分辨率层序划分及聚煤规律研究[D].青岛:山东科技大学,2006.
    [40]孙晓华.临清地区煤成气储集层沉积学及成岩事件研究[D].青岛:山东科技大学, 2006.
    [41]赵路子.蜀南地区嘉陵江组沉积相研究及有利储集相带预测[D].南充:西南石油学院,2004.
    [42] Posamentier,A.d.,etal. SEQUENCE stratigraphy and facies association[M].Special publication of IAS,1993.
    [43] Posamentier,H.W.etal. High resolution sequence stratigraphy-the east Coulee delta[J].Albert.J.sedi.petrol,1992,2(62):310~312.
    [44] Michael Holz , Wolfgang Kalkreuth ,Indranil Banerjee, Sequence stratigraphy of paralic coal - bearing strata: anoverview[J] .Iernational Journal of Coal Geology ,2002 (48): 147~179.
    [45] Darid,T.Lawrence etal.Straatigraphy simulation of sedimentary basis :concepts and calibration[J]. AAPG B Uulletin.1990,3(74):73~275.
    [46] Diessel,C.F.K. Coal-bearing depositional system-coal facies and depositional environments[M].Springer-verlag,1992.
    [47]李宝芳,温显端,李贵东.华北石炭、二叠系高分辨层序地层分析[J].地学前缘, 1999, 6(增刊): 81~94.
    [48]李思田,李祯,林畅松,等.含煤盆地层序地层分析的几个基本问题[J].煤田地质与勘探, 1993,21(4):1~8.
    [49]李增学,魏久传,韩美莲.海侵事件成煤作用—一种新的聚煤模式[J].地球科学进展, 2001,16(1): 120~124.
    [50]梁积伟.鄂尔多斯盆地东北部山西组高分辨层序地层及沉积微相研究特征研究[D].西安:西北大学,2004.
    [51]唐鹏程,郭平,杨素云,杜建芬.煤层气成藏机理研究[J].中国矿业,2009,(2):94~97.
    [52]刘占勇,芮乐道,王春云.山西白额勘探区煤质特征分析[J].中国煤炭地质.2008, 20(11):18~20.
    [53]孙平.煤层气成藏条件与成藏过程分析[D].成都理工大学, 2007.
    [54]王红岩,刘洪林,赵庆波,等.煤层气富集成藏规律[M]北京:石油工业出版社, 2005.
    [55]王红岩,李景明,刘洪林,等.中国高阶煤层气成藏特征[J].天然气工业, 2005, 25 (12):45~47.

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