东濮凹陷杜桥白深层油气特征及成藏历史研究
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摘要
本文通过对东濮凹陷杜桥白地区深层烃源岩及油气地球化学特征的研究,系统分析了该区深层天然气与原油的成因;通过含油砂岩孔隙中自由态烃、颗粒吸附态烃及油气包裹体烃的地球化学特征分析,研究了油气不同注入期次的流体性质;通过油藏饱和压力法、自生矿物K/Ar同位素测年、油气包裹体均一化温度等多种方法研究了杜桥白地区不同油气成藏期次及时间与油气成藏期次分布规律,分析了杜桥白地区油气成藏的主控因素及油气富集规律。取得了如下主要认识:
     白庙与桥口地区天然气虽同属湿气,但成分有一定差异,桥口地区天然气甲烷含量均小于80%,甲烷/重烃为5左右;而白庙地区天然气甲烷含量相近,普遍高于88%,甲烷/重烃>10。产生桥口、白庙天然气组份差异的主要原因除成熟度影响外,天然气的母源类型起决定作用。白庙地区天然气主要来源于前梨园洼陷第三系烃源岩和石炭—二叠系煤系地层,靠近兰聊断裂带构造高点,浅层ES_2~下—ES_3~2气层具有较高的Ar~(40)/Ar~(36)比值,为煤型气及混合气。而远离兰聊断裂带,且处于构造低部位的ES_3~1—ES_3~4气层具有较低的Ar~(40)/Ar~(36)比值,为油型气;桥口构造ES_3~3、ES_3~4段气层主要为油型气;杜寨地区ES_3~3段气层为油型气,来自于ES_3~3段气源岩。
     油源对比结果表明杜寨地区濮深15井的凝析油来源于本区ES_3~3~ES_3~4地层,前8井ES_3~2原油来源ES_3~2地层;桥口地区东翼葛岗集洼陷一侧的桥14、20、23、25、60井深层油气与葛岗集洼陷烃源岩有关,桥口垒块桥38井原油与前梨园洼陷烃源岩有关;白庙构造翼部白12井原油主要与前梨园洼陷ES_3~3~ES_3~4段烃源岩有关,构造腰部白54、17、9等井的凝析油与前梨园洼陷ES_3~2段烃源岩有关,白16井原油来源于葛岗集生油洼陷。
     应用伊利石测年法、包裹体测温法、饱和压力法等综合分析了杜桥白地区深层天然气成藏时期,杜桥白地区天然气成藏主要分为两大阶段:第一阶段为东营组—馆陶组沉积早期,这一阶段是天然气藏最为主要的形成期。这一阶段天然气藏成藏年龄绝大部分对应于剥蚀期27-17Ma,剥蚀期,压力减小,有利于天然气成藏。第二阶段为第四纪以来,第四纪以来一方面是已形成气藏的调整,另一方面是二次生成气的继续注入。伊利石测年法确定的天然气成藏时期主要为东营—馆陶组早期,其中杜寨主要为43.0-38.0Ma及25.4Ma;桥口地区为37.8-25.4Ma及24.4-18.4Ma;白庙地区为38.0-25.4Ma及23.4-20.4Ma;杜寨地区成藏较早,伊利石测年确定的是天然气藏最早形成时期,是天然气藏形成的上限,伊利石测年法确定的天然气成藏期是两大主要成藏期的第一阶段。包裹体测温法不仅确定了第一阶段天然气成藏期为28-20Ma,也确定了第二阶段天然气成藏期,即第四纪以来(2Ma以来)。
     本文应用多种方法对杜桥白地区深层油气藏地球化学特征、油气藏形成期次及成藏控制因素进行了深入研究,在油气来源、油气藏形成期次及油气成藏规律性方面取得了一系列新的认识,对杜桥白地区油气勘探有重要的指导意义。
Based on the research for the deeply buried source rocks and the geo-chemical properties of the oil and gas within Duqiaobai area in Dongpu depression, the formation principle of the deeply buried gas and crude oil are systemically analyzed in this paper. The properties of the fluids in different period of the injection of the oil and gas are studied by analyzing geo-chemical properties of the free hydrocarbon in pores in oil-bearing sandstone, of the hydrocarbon adsorbed on grains and of the oil and gas in inclusion enclaves. The injection periods and time of the oil and gas are also studied by testing reservoir saturation pressure, authigene K/Ar isotope and homogeneous temperature of oil and gas in inclusion enclaves. Major controlling factors were also obtained by studying hydrocarbon distribution and accumulation so as to get a further understanding of reservoir forming principle.
    Composition of natural gas is different in Baimiao and Qiaokou, though they are both wet gas. In Qiaokou area, the content of methane CH4%<80%, the value of the ratio between methane CH4 and heavy hydrocarbon is about 5, while in Baimiao area, the value of methane CH4>88%, the value of the ratio between methane CH4 and heavy hydrocarbon is more than 10. This difference is caused not only by maturity but also by source rock. Natural gas in Baimiao area is mainly derived from Tertiary source rock and Carboniferous Permian formation in Qianliyuan sag, which is near the high point on Lanliao fracture belt. The ES2-ES32 gas net pay Shallowly buried has a high value of Ar40/Ar36, which generates coal-type gas or mixed gas; while in the lower part off the Lanliao fracture belt, ES3'-ES34 as net pay has a low value of Ar40/Ar36, which generates oil-type gas, so does ES33, ES34 gas net pay in Qiaokou structure and ES33 in Duzhai area.
    The correlation between the oil and source rock shows that in Duzhai area, condensate in well Pushenl5 is from formation ES33-ES34, and crude oil in well Qian8 is from ES32. In Qiaokou area, deep parts of well Qiaol4, 20, 23, 25, 60 are related to source rock in Gegangji sag, while crude oil in well Qiao38 is related to source rock in Qianliyuan sag; in Baimiao structure, crude oil in well Bail2 is related to source rock of ES33-ES34 in Qianliyuan sag, while condensate in well Bai54, 17, 9 is related to source rock of ES32 in Qianliyuan sag and crude oil in well Bai6 is from oil kitchen Gegangji.
    
    
    
    The study on illite age testing, inclusion enclave temperature testing and saturation pressure testing has been used to know the time of the deeply buried gas net pay formed. The time of the deeply buried gas net pay formed can be divided into two stages. The first is early period of Dongying-Guantao, which is the main stage for natural gas forming with erosion and decrease of pressure. The second is from the beginning of Quaternary to update, during which gas reservoir is reforming and the reforming gas is refilling into the reservoirs. According to the value K/Ar in Illite, the time to form the gas reservoirs can be determined as the period of Dongying -Guantao, among which Duzhai is 43.0-38.0Ma and 25.4Ma, Qiaokou area 37.8-25.4Ma and 24.4-18.4Ma, Baimiao 38.0-25.4Ma and 23.4-20.4Ma. Natural gas in Duzhai area was formed the earliest. Inclusion enclave temperature testing not only determined the first stage for natural gas formed to be 28-20Ma but also the second stage to be from Quaternary (2Ma).
引文
1.潘长春,傅家谟,盛国英,杨坚强.准噶尔盆地腹部油气藏油源的确定及其意义[J].石油学报,1999,20(5):27-32,
    2.冯建辉、李键、谈玉明、张洪安、任来义等,东濮凹陷隐蔽油气藏成藏条件研究,2000
    3.谈玉明、苏玉山、周章保、张金报等,中原深层石油地质研究与目标评价,2000
    4.许化政、袁政文、王生朗等,东濮凹陷深层气地质特征及评价,1989
    5.任来义等,东濮凹陷深层气成藏机理与有利区带评价,2001
    6.吕延仓、郑鸿稳等,中原油田勘探潜力分析及资源发展战略,2000.3
    7.孙宜朴、王峻等,东濮凹陷油气资源评价,2000
    8.陈开远等,东濮凹陷深层油气成藏机制研究,2000
    9.樊太亮等,东濮凹陷深层气成藏机理与有利区带评价,2000
    10.陈荣书等,东濮凹陷杜寨—桥口—白庙地区油气藏特征、形成条件及评价研究,1990
    11.段海岗、张金报,白庙深层油气藏控制因素及成藏条件研究,1999
    12.朱家祥等,杜桥白地区及邻区深层天然气成藏体系及勘探目标评价,1997
    13.任来义等,东濮凹陷非构造圈闭油气藏成藏条件与勘探技术研究,1999
    14.武晓玲、苏玉山等,桥口深层气主控制因素分析及勘探建议,1999
    15.周章保等,中原地区古生界区块早期评价,中原油田勘探开发研究院,1995
    16.樊胜利等,东濮凹陷构造形成演化与油气聚集,中原油田勘探开发研究院,1994
    17.焦存礼等,东濮凹陷南北石油地质条件对比,中原油田勘探开发研究院,1997
    18.长沙大地构造研究所,东濮凹陷形成演化与油气,中原油田勘探开发研究院,1985
    19.任战利,吐哈盆地含油气系统及主要油田成藏期研究,1998
    20.张金报等,桥口地区滚动勘探开发目标综合评价,1994
    21.乔治清、焦存礼等,东濮凹陷北部文西杜寨地区天然气勘探目标评价,1994
    22.罗小平等,桥口白庙地区油藏地球化学及成藏史研究,1999,19(2)
    23.戴金星、裴锡古、戚厚发主编,中国天然气地质学,北京:石油工业出版社,1992
    24.傅家瑛、刘德汉主编,天然气运移、储集及封盖条件,北京:科学出版社,1992
    25.中原石油勘探局编,东濮凹陷油气生成地球化学研究,北京:石油工业出版社,1991
    26.煤成气地质研究编委会,煤成气地质研究,北京:石油工业出版社,1987
    27.张义纲等,天然气的生成聚集和保存,河海大学出版社,1991
    
    
    28.朱家蔚、袁政文、王生朗,前梨园洼陷杜寨超压致密气藏储集层特征及富集因素,天然气地质研究论文集编委会编,北京:石油工业出版社,1989
    29.D. Emery and A、Robinson等著,王铁冠、金振奎、王大锐等译,石油地球化学在石油地质学中的应用,北京:石油工业出版社,1999
    30.王飞宇等,利用自生伊利石K-Ar定年分析烃类进入储层的时间,地质论评,1997,43(5)
    31.马团校、任战利,伊利石K-Ar定年法确定油气成藏期研究进展,西北地质科学,1998,19(2)
    32.任战利,中国北方沉积荒地构造热演化史,北京:石油工业出版社,1999
    33.陈荣书,石油与天然气地质学,武汉:中国地质大学出版社,1994
    34.李明城,石油与天然气运移,北京:石油工业出版社,1994
    35.许化政,东濮凹陷煤系有机质地化特征及生烃学演化模式,石油实验地质,1987
    36.赫芳、邹华耀、姜建群,油气成藏动力学及其研究进展,地学前缘,2000,Vol,7,No,3
    37.马新华、钱凯等,关于21世纪初叶中国天然气勘探方向的初步认识,石油勘探与开发,2000,Vol27,No3
    38.李明诚、李剑等,油气运移与聚集量模拟系统的研究,复式油气田,2000年第3期
    39.池英柳、赵文智,渤海湾盆地油气富集带的形成与分布,勘探家,2000,Vol5,No1
    40.康竹林,渤海湾盆地深层油气勘探前景,石油勘探与开发,1996,Vol23,No6
    41.戴金星、傅诚德、关德范主编,天然气地质研究新进展,石油工业出版社,1997
    42.王涛主编,中国天然气地质理论基础与实践,石油工业出版社,1997
    43.谯汉生、李峰,深层石油地质与勘探,勘探家,2000,5(4)40.杜建国,中国东部裂谷裂地幔脱气的氦同位素证据,科学通报,1994,39(9)
    44.杜建国,中国东部裂谷裂地幔脱气的氦同位素证据,科学通报,1994,39(9)
    45.朱家蔚、徐永昌、申建中等,东濮凹陷天然气氩同位素特征及煤成气判识,1984,1期
    46.戴金星、宋岩、戴春森等,中国东部无机成因气及其气藏形成条件,北京:科学出版社,1995
    47.赵文智、窦立荣、宋岩,我国天然气地层研究与勘探的新进展,天然气工业,2000,20(3)
    48.周光熙,源—盖共控论述要,石油勘探与开发,1997,24(6)
    49.许化政,白庙气田天然气分布的控制因素,1990,10(2)
    50.寿建峰,桥口、白庙地区油气分布与成藏模式,1994,14(1)
    
    
    51.王立志、冯石、王世成,用磷灰石裂变径迹法分析研究东濮凹陷白庙地区的热历史,1994,石油勘探与开发,21(5)
    52.张阳,杜祥,杨庆文,等.东濮凹陷挥发油特征及勘探方向[J] 石油勘探与开发,2001,28(4):28-32.
    53.武晓玲,卢福长,张云献,等.东濮凹陷濮深8井油气与烃源岩地球化学特征[J].石油勘探与开发,2000,27(5):32-35.
    54.朱家蔚,许化政.东濮凹陷煤层气地化指标及其与油气的对比[J],石油与天然气地质,1985,6(3) 272~279.
    55.冯建辉,谈玉明,罗小平,等.东濮凹陷杜桥白地区天然气及凝淅油地球化学特征及成因[J].地球化学,2002,31(6):509-516.
    56.陈文义,朱家蔚,许化政.东濮凹陷不同成因类型天然气,凝析油地球化学特征及鉴别标志[A].《煤成气地质研究》编委主编.煤成气地质研究[C].北京:石油工业出社.1987,118-130.
    57.朱家蔚,许化政.东濮凹陷煤层气地化指标及其与油气的对比[J],石油与天然气地质,1985,6(3)272~279.
    58.王铁冠,张枝焕.油藏地球化学的理论与实践[J].科学通报,1997(14):73-78
    59.张敏,林壬子,梅博文.油藏地球化学—塔里木盆地库车含油气系统研究[M].重庆:重庆大学出版社,1997:5-45.
    60.潘长春,杨坚强.准噶尔盆地砂岩储集岩生物标志化合物特征及其意义[J].地球化学,1997,26(5):82-90.
    61.潘长春,杨坚强.油气藏微观非均一性及其应用[J].沉积学报,1998,16(4):98-104.
    62.宋长玉,陈致林,王忠.储层有机包裹体分析枝术及其在石油勘探中的应用[A].梁狄刚,黄第藩,马新华,李景明主编,有机地球化学研究新进展[C].北京:石油工业出版社,2002,412-414.
    63.林壬子,金晓辉,朱丹.油藏混层开采动态的地球化学监测技术[A].梁狄刚,黄第藩,马新华,李景明主编,有机地球化学研究新进展[C].北京:石油工业出版社,2002,72-79.
    64. Karlsen D A, Nedkvitne T, Larter S R, Bjφrlykke K. Hydrocarbon composition of authigenic inclusions: Application to elucidation of petroleum reservoir filling history[J]. Geochimica et Cosmochimica Acta, 1993, 57: 3641-3659.
    65. George S C, Krieger F W, Eadington P J, Quezada R A, Greenwood P F, Eisenberg L I, Hamilton P J, Wilson M A. Geochemical comparison of oil-bearing fluid inclusions and produced oil from the Toro sandstone, Papua New Guinea[J]. Organic Geochemistry, 1997, 26: 155-173.
    66. George S C, Lisk M, Summons R E, Quezada R A. Constraining the oil charge history of the South Pepper oilfield from the analysis of oil-bearing fluid inclusions[J]. Organic Geochemistry, 1998, 29: 631-648.
    67. Jones D M, Macleod G. Molecular analysis of petroleum in fluid inclusions: a practical methodology[J]. Organic geochemistry, 2000, 31: 1163-1173.
    68. Pan Changchun, Fu Jiamo, Sheng Guoying. Sequential extraction and
    
    compositional analysis of oil-bearing fluid inclusions in reservoir rocks from Kuche Depression, Tarim Basin[J]. Chinese Sciences Bulletin, 2000, 45 (supplement): 60-66.
    69. Pan Changchun, Yang Jianqiang. Geochemical characteristics and implications of hydrocarbons in reservoir rocks of Junggar Basin, China[J]. Chemical Geology, 2000, 167: 321-335.
    70. Pan Changchun, Yang jianqiang, Fu Jiamo, Sheng Guoying. Molecular Correlation of Free Oil and Inclusion Oil of Reservoir Rocks in the Junggar Basin, China[J]. Organic Geochemistry, 2003, 34: 357-374.
    71. Peters K E, Moldowan J M. The biomarker guide: Interpreting molecular fossils in petroleum and ancient sediments[M]. New Jersey: Prentice-Hall, Englewood Cliffs, 1993.
    72. Baylis S A. Geochemical comparison of core extracts and oil samples in reservoir[J]. Organic Geochemistry, 1998, 29 (1-3) : 463-484.
    73. England W A. The organic geochemistry of petroleum reservoirs[J]. Organic Geochemistry, 1990, 16: 415-425.
    74. Larter S R, Aplin A C. Reservoir geochemistry: methods, applications and opportunities[A]. In Cubitt J M, England W A. eds, The Geochemistry of Reservoirs [C]. Geological Society Special Publication 86, London, 1995, 5-32.
    75. relationship to hydrocarbon maturation and fluid flow, Brent sandstone. AAPG Bull, 1989, 73: 1341-1360
    76. Hamilton P J, Kelly S, Fallick A E. K-Ar dating of illite in hydrocarbon reservoirs. Clay Miner, 1989,24:215-231
    77. Lee M, Aronson J L, Savin S M. Timing and conditons of Permian Rotliegende sandstone diagsenesis, southern North Sea: K-Ar and oxygen isotopic data. AAPG Bull, 1989,73:195-215
    78. Nicoleliwig et al. Rb-Sr and K-Ar dating of clay diagenesis in Jurassic Sandstone Oil Reservoir, North Sea. AAPG Bull, 1987,71:1467-1474
    79. Weaver CE. Clays, muds and shales; Developments in Sedimentology. Amsterdam, Elsevir, 1989,819
    80. P.A.Allen and J.R.Allen, 1990, Basin Analysis: Principles and Applications, Blacwell Scientific Publications, Oxford, Britain.

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