环渤海湾地区石炭—二叠系油气成藏条件分析
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摘要
环渤海湾地区石炭—二叠系油气资源有着巨大的潜力,具有油气成藏条件。在前人研究的基础上,本文运用沉积学、煤地质学、构造地质学,以及油气地质学与岩石学等方法,结合扫描电子显微电镜、岩石薄片观察等实验手段,根据研究区石炭—二叠系赋存特点,充分搜集了大量钻井资料,通过编图与系统分析,对烃源岩、储层、盖层、生储盖组合进行了研究。
     通过对煤系烃源岩的显微组分类型和含量、有机质丰度和类型、成熟度等数据的分析,揭示了环渤海湾地区石炭—二叠系煤系有效烃源岩的空间展布,圈定了有利油气生成区。
     分析了环渤海湾地区砂岩储层岩石学特征、物性特征及空间展布特点。结果表明:研究区二叠系山西组、石盒子组都发育以石英砂岩为主的砂岩储集体,由山西组—石盒子组砂岩成熟度逐渐增高。其中,石盒子组发育以中、粗砂为主,成熟度较高、分布广泛,是油气的主要储集层,但砂岩储层渗透率较差,属于特低孔低渗透率储层,为中等—较差储集岩类型;砂岩储层填隙物以黏土杂基最为常见,含少量硅质、钙质、自生黏土胶结物等;由于本区成岩作用强烈,砂岩储集空间中原生孔隙不发育,以次生为主;由于后期改造剧烈,储层空间分布具有一定不均性。
     在对环渤海地区石炭—二叠系盖层泥岩特征观察的基础上,通过对粘土矿物含量的相对定量分析及孔隙度、渗透率的统计分析,结合沉积控制,评价了该区盖层泥岩的封闭能力。结果表明,渤海湾盆地上、下石盒子组盖层泥岩分布范围广,保存完整,可作为区域盖层;下石盒子组盖层泥岩的孔隙度和渗透率又明显低于上石盒子组,封盖性更好;太原组和山西组发育的泥岩也作为局部盖层。
     对研究区的生储盖组合特征及生储盖组合进行综合分析研究表明:就石炭—二叠系而言渤海湾盆地济阳块坳是生油气中等的地区;黄骅块坳总体上是属于比较有利生油气的地区,有利的油气生成区块以孔西潜山和徐黑潜山一带最好,其次是歧口凹陷和南皮凹陷;文安坳陷生油气较好,其中以苏桥—文安一带各种条件都比较最适宜于油气的形成;临清块坳也是有利的煤成油气地区;鲁西的黄河北、聊城、鱼台—金乡、菏泽等含煤区块深部可作为今后勘探开发的目标区。
Carboniferous-Permian oil and gas resources has great potential around Bohai Gulf area, with the conditions of oil and gas accumulation. On the based of the previous studies,This article utilizes the sedimentology, the coal geology, the structural geology, as well as methods and so on oil gas geology and petrology, etc, combining with experiment methods of scanning electron microscopy and rock thin slice observation, have collecting massive drilling data, through mapping and the system analysis,the hydrocabon source rock,reservoir,cap rock and the source-reserboir-seal combination are studied.
     Though researching maceral type and content ,abundance,types and maturity of organic matter in coal hydrocarbon source rocks according to the Carboniferous-Permian occurrence characteristics of the study region, revealed the spatial distribution of effective hydrocarbon source rocks of Carboniferous -Permian coal measures around Bohai Gulf area and delineated favorable oil and gas generation blocks.
     This paper analyzed the Petrological characteristics,physical characteristics and spatial distribution characteristic of sandstone reservior around Bohai Gulf area. The result indicated: The study region of Permian Shanxi Formation,Lower Shihezi Formation develop group consisting mainly of quartz sandstone in sandstone reservoirs,from Shanxi Formation to Shihezi Formation sandstone gradually maturer. And, Shihezi Formation develop primarily sandstone and coarse sandstone, with higher maturity and wide distribution,is majoe reservoir of oil and gas,but premeability of sandstone reserviors are low,belonging to the especially low porosity and low permeability reservoirs for the medium -poor reservoir rock types;Clay-based material is the most common in Sandstone reservoirs fillers,including a small amount of silica,calcium,self-generation clay cement and so on;Diagenesis is intense in this area, so in sandstone reservoir space the primary porosity is not grow and secondary porosity is the main;Because latter transformation is fierce,the spatial distribution of reservior is inequality.
     This paper studied the macroscopic and microscopic characteristics of the mudstone cover layers in Carboniferous-Permian coal bearing strata around Bohai Gulf area,on the basis of which, the sealing ability of regional mudstone cap rocks was evaluated. The results indicated, around Bohai Gulf area mudstone cap rocks of Upper and Lower Shihezi Formation cover a large area and well preserved,which is a valuable cap rock.;The porosity and permeability of Lower Shihezi Formation mudstone cover layers are obviously lower Upper Shihezi Formation,capping of a better;The mudstone in Taiyuan Formation and Shanxi Formation could work as local cap.
     The comprehensive research to the study area of the source-reserboir-seal combinational characteristics and source-reserboir-seal combination indicate:Bohai Bay Basin Jiyang block-depression is the middle area of formating oil and gas to Carboniferous-Permian;Huanghua block-depression is generally more favorable to formating oil and gas,the most favorable area of formating oil and gas is Kongxi burial hill and Xuhei burial hill,followed by Qikou sag and Nanpi sag;Wenan depression is a better area to formating oil and gas,especially a variety of condications of Suqiao-Wenan are the most appropriate to the formation of oil and gas;Linqing block-depression is also beneficial area to formating oil and gas; In Luxi area Huanghebei,Liaocheng,Yutai-Jinxiang and Heze,such as deep coal blocks can be used as the future exploration and development of the target area.
引文
1.王艳.渤海湾盆地石炭-二叠系烃源岩特征与评价[D].北京:中国地质大学,2006.
    2.徐晓尹.渤海湾盆地石炭二叠系原生油气藏成藏作用[D],北京:中国地质大学,2007,5.
    3.李君文.环渤海湾地区下古生界层岩相古地理特征及演化[D].四川成都:成都理工大学,2007,10-11.
    4.牛嘉玉.渤海湾盆地深部层系油气成藏与分布规律研究[D].北京:中国地震局地质研究所,2003,10-16.
    5.杨勇,桑树勋,陈世悦,等.渤海湾盆地石炭二叠系盖层及其沉积控制[J].中国煤田地质,2007,19(6),9-13.
    6.曹代勇,王延斌,等.渤海湾盆地深层烃源岩生烃条件研究[M].北京:地质出版社,2001.
    7.常俊合,吕红玉,郭广辉,等.上古生界碳酸盐岩生烃条件二次生烃潜力评价-以临清地区TGS 井为例[J].断块油气田,2001,8(1).
    8.戴金星,戚厚发,王少昌,等.我国煤系的气油地球化学特征-煤成气藏形成条件及资源评价[M].北京:石油工业出版社,2001.
    9.戴金星,宋岩,关德师,甘利灯.鉴别煤型气的指标[M].北京:石油工业出版社,1987,156-170.
    10.戴金星.关于冀中拗陷煤成气的探讨-与王雪平等同志商榷[J].石油实验地质,1988,10(2):189-194.
    11.党振荣,刘永斗,王秀,等.苏桥潜山油气藏烃源讨论[J].石油学报,2001,22(6).
    12.付立新,陈善勇,王丹丽,等.乌马营奥陶系潜山天然气藏特点及成藏过程[J].石油勘探与开发,2005,29(5).
    13.葛修丽.岩心样品中轻烃的测定方法和在石油地质中应用的探讨[J].石油勘探与开发,1982,5:29-34.
    14.李剑,张英,等.煤成气气源判别新方法的研究与应用[J].天然气地球科学,1998,9(6):11-19.
    15.梁狄刚,曾宪章,王雪平,等.冀中拗陷油气的生成[M].石油工业出版社,2001.
    16.杨俊杰,胡朝元,石宝衍,等.煤成气地质研究[M].北京:石油地质出版社,1987.
    17.张新民,庄军,张遂安.中国煤层气地质与资源评价[M].北京:科学出版社,2002.
    18.王群,宋延杰,张淑梅.大庆地区深部致密砂岩气层识别方法[J].大庆石油学院学报,1994,18(2):22-25.
    19.吴志均,唐红君,安风山.川南新场致密砂岩气藏层理缝成因探讨[J].石油勘探与开发,2003,30(2):109-111.
    20.朱炎铭,秦勇,王猛,等.黄骅坳陷石炭-二叠纪煤成烃演化的构造控制[J].中国矿业大学学报,2006,35(3):283-287.
    21.戴启德,纪友亮.油气储层地质学[M].东营:石油大学出版社,1996:30-56.
    22.李增学,魏久传,刘莹,等.煤地质学[M].北京:地质出版社,2005.
    23.张金亮,常象春.石油地质学[M].青岛:石油工业出版社,2004.
    24.李增学,刘华,余继峰,等.山东济阳石炭-二叠系煤成气储层沉积研究[J].沉积学报,2006,24(4):505-510.
    25.李增学,张善文,刘华等.煤成气储层沉积、层序及其空间展布研究-以济阳孤北区块为例[J].中国地质,2007,34(4):612-621.
    26.李增学,魏久传,刘莹,等.煤成(型)气地质学[M].北京:地质出版社,2007.
    27.吕大炜,李增学,房庆华,等.济阳坳陷上石盒子组煤成气砂岩储层研究[J].中国矿业大学学报,2008,37(3):389-395.
    28.秦建中,贾蓉芳,郭爱明,等.华北地区煤系烃源层油气生成、运移、评价[M].北京:科学出版社,2000:38-160.
    29.周兴熙.源-盖共控论述要[J].石油勘探与开发,1997,24(6):4-7.
    30.付广,薛永超.盖层与源岩的时空配置关系对油气运聚成藏的控制作用[J].矿物岩石,2001,21(2):56-61.
    31.黄海平,邓宏文.泥岩盖层的封闭性能及其影响因素[J].天然气地球科学,1995,6(2):20-26.
    32.庞雄奇,付广,万龙贵,等.盖层封油气性综合定量评价[M].地质出版社,1993.
    33.郭绪杰,焦贵浩.华北古生界石油地质[M].北京:地质出版社,2002.
    34.胡宗全,朱建辉,周新科,等.渤海湾盆地中南部上古生界生烃史与天然气勘探前景[J].石油与天然气地质,2008,29(3):312-319.
    35.许化政,周新科.文留地区石炭-二叠纪煤系生烃史及生烃潜力[J].石油与天然气地质,2004,25(4):400-407.
    36.常俊合,李新军,何江,等.东濮凹陷文古2井天然气地球化学特征及成因研究[J].天然气地球科学,2005,16(5):608-611.
    37.胡宗全,王传刚,张玉兰,等.渤海湾盆地东濮凹陷上古生界潜山油气成藏条件评价[J].石油实验地质,2004,26(6):553-556.
    38.梁生正,谢恭俭,马郡,等.华北石炭-二叠系残留盆地天然气勘探方向[J].天然气工业,1998,18(6):16-19.
    39.王毓俊,田在艺.华北东部盆地油气勘探潜力与发展方向[J].石油学报,2003,24(7):7-12.
    40.梁生正,杨国奇,田建章,等.渤海湾叠合盆地大中型天然气田的勘探方向[J].石油学报,2001,22(6):1-4.
    41.王兆云,何海清,程克明.华北区古生界原生油气藏勘探前景[J].石油学报,1999,20(2):1-6.
    42.胡宗全,朱建辉.渤海湾盆地中南部上古生界天然气资源潜力[J].石油与天然气地质,2008,28(9):6-8.
    43.孙万禄,应文敏,王树华,等.煤层气地质学基本问题的探讨[J].石油与天然气地质,1997,18(3):189-194.
    44.Magoon L.B.,Dow W.G..The petroleum system:from source to trap[J].AAPG Memoir,1994(60):1-30.
    45.Teichmuller M..The significance of coallification studies to geology-a review[J].Bulletin Des Centres De Recherches Exploration-Production ELF-A quitaine,1981,5(2):491-534.
    46.Waiter B.,Ayers J.R..Coalbed systems,resources and production and a review of contrasting cases from the San Juan and powder river basins[J].AAPG,2002,86(11):1853-1891.
    47.Dow W.G..Application of oil-correlation and source rock data to exploration in Williston basin[M].AAPG Bulletin,1974,58:1253-1262.
    48.Perrodon A..Geodynamique petroliere:genese et repartition des gisementsd hydrocarbures[M].Paris,Masaon-Eif-Aquitaine,1980,38:181-190.
    49.Demaison G.,Murris R.J..Petroleum geochemistry and basin evalu ation[M].AAPG Memoir,1984,35:426-430.
    50.Meissner F.F..Petroleum geology of Bakken Formation,Williston basin in North Dakota and Montana,in G.Demaison and R J Murris,ed.Petroleum geochemistry and basin evaluation[M].AAPG Memoir,1984,35:159-179.
    51.Vlmishek G..Stratigraphic aspects of petroleum resource assessment,in D D Ricee.Oil and gas assessment-methods and applications[M].AAPG Studies in Geology,1986,21:1-59.
    52.Shao Longyi,Xiao Zhenghui,Lu Jing et al..Pertain-Carboniferous coal measures in the Qinshui basin:Lithofacies paleogeography and its control on coal accumulation[J].Frontiers of earch science in China,2007,1(1):106-115.
    53.David Ford,Jan Golonka.Phanerozoic paleogeography,paleoenvironment and lithofacies maps of the circum-Atlantic margins[J].Marine and Petroleum geology,2003,20(3-4) 249-285.
    54.Feng,Z.et al..Potential of oil and gas of the Permian of south China from the viewpoint of lithofacies paleogeography[J].Fuel and Energy Abstracts,1998,39(2):105.
    55.Ortiz-Jaureguizar E.,Cladera G.A..Paleoenvironmental evolution of southern South America during the Cenozoic[J].Journal of Arid Environments,2006,66(3):498-532.
    56.George Anastasakis,David J.W.Piper,Michael D.Dermitzakis et al.Upper Cenozoic stratigraphy and paleogeographic evolution of Myrtoon and adjacent basins,Aegean Sea,Greece[J].Marine and Petroleum Geology,2006,23(3):353-369.
    57.Michael H.Gardner,James M.Borer,Jesse J.Melick et al..Stratigraphic process-response model for submarine channels and related features from studies of Permian Brushy Canyon outcrops,West Texas[J].Marine and Petroleum Geology,2003,20(6-8):757-787.
    58. Mette Danielsen. Olaf Michelsen, Ole R(?)n(?) Clausen et al.. Oligocene sequence stratigraphy and basin development in the Danish North Sea sector based on log interpretations[J]. Marine and Petroleum Geology, 1997, 14 (7-8) 931-950.
    
    59. Garyh, Isaksen. Central North Sea hydrocarbon system: generation, migration, entrapment, and thermal degradation oil and gas[J]. AAPG Bulletin, 2004, 88 (11): 1545-1572.

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