用户名: 密码: 验证码:
东濮凹陷深层天然气成藏机理研究
详细信息    本馆镜像全文|  推荐本文 |  |   获取CNKI官网全文
摘要
本文立足于东濮凹陷勘探实践,以烃源岩生烃演化和气源对比研究为基础,以典型深层天然气藏成藏动态过程解剖为主线,应用天然气成藏理论、高精度流体包裹体分析、天然气成因判识、自生伊利石测年等一系列油气地质新理论、新技术,研究深层气藏成藏机理,分析深层天然气藏成藏主控因素。
     综合利用镜质体反射率法和声波时差法恢复了古近纪末期地层的剥蚀厚度。在此基础上,恢复了东濮凹陷上古生界和古近系烃源岩热演化史与生烃史。研究表明,东营组沉积末期各洼陷地层剥蚀量大小不一,且具有隆起-斜坡-凹陷中心剥蚀量依次减小的特征,由此,烃源岩生烃得到不同程度的抑制甚至停止;新近纪以来盆地整体沉降和不同程度的沉积补偿使得烃源岩进入二次生烃阶段,故两套烃源岩埋藏和生烃演化具有时空分段性,生烃高峰期各异。
     采用天然气组分、碳氢同位素、惰性气体同位素等方法进行气源对比。东濮凹陷天然气按成因可分为煤成气、油型气和混合气三种类型。煤成气主要聚集在中央隆起带早期形成的圈闭中;凝析气藏主要环绕濮城-前梨园、葛岗集和柳屯-海通集洼陷三大生气中心分布;混合型凝析气藏分布在断穿基底的二、三级断层附近。煤成气主要由烃源岩干酪根直接裂解而成,以游离相态运移为主,源岩内异常高压是煤成气运聚的主要动力,输导体系以断裂为主,成藏时间为沙一段至东营组剥蚀期,东营运动过程中,天然气边充注边散失,为一期连续充注动态成藏。深层凝析气类型包括原生型、原油裂解型、气侵富化型、逆蒸发型和混合型,源岩流体异常压力是油气运聚原始动力,以砂体输导、环洼分布为主,三期成藏:沙一-东营沉积期、东营抬升剥蚀期和新近纪7-5Ma以来。
     煤成气成藏主控因素为烃源岩、输导体系和盖层。其中,烃源岩生气中心控制气藏的分布范围,输导体系控制天然气运聚成藏系统,盖层条件控制天然气纵向富集层位。深层凝析气成藏主控因素为烃源岩、成藏时间、输导体系、盖层。烃源岩母质条件控制凝析气富集程度,埋藏深和晚期成藏有利于凝析气藏的形成和保存,输导体系控制凝析气运聚成藏和分布,盖层条件控制天然气纵向富集层位。
Based on exploration practice, hydrocarbon evolution of source rock and gas source correlation, taking dynamic process of reservoir formation for special gas field, together with applying reservoir formation theory of natural gas, inclusion analysis of fluids with high accuracy, natural gas genesis recognition, autogenic illite age dating, this paper has studied gas reservoir formation mechanism and analyzed principle factors controlling gas reservoir formation.
     Integrative applying of vitrinite reflectance and interval transit time method recovered denuded thickness of late Dongying formation of Baleaogene.By burial history and integrative thermal history simulation, thermal evolution and hydrocarbon generation of upper Paleozoic and Baleaogene source rock has been recovered in Dongpu depression. Study shows denudation of late Dongying formation is characteristic: thickness decreases along uplift-slope-center depression.As all the basin subsided and varying degrees sedimentary compensation since Eogene, source rock intake secondary oil generation. So source rock burial and hydrocarbon generation evolution of Baleaogene in Dongpu depression are of time space subsection and hydrocarbon generation peak is obviously of time space difference.
     Using components of natural gas, carbon and hydrogen isotope and inert gases isotope, air source correlation for natural gas has been carried out. Natural gas in Dongpu depression can be classified into coal bed gas, oil bed gas and mixed gas by its genesis. Coal bed gas mainly accumulates in the trap developed early in central uplift; condensate gas reservoir mainly surrounds 3 principle gas generation center including Pucheng-Qianliyuan sub-depression, Gegangji sub-depression and Liutun-Haitongji sub-depression; while mixed condensate gas reservoir are near the faults through the basement.
     Coal bed gas derived from kerogen cracking of source rock, main migrating in dissociated phase. Abnormal high pressure in the source rock is the main drive for gas accumulation and migration. Migration Pathways give priority to fractures,reservoir formating in denudation phase from Es1 to Ed. In the process of DongYing tectogenesis,gas dissipated when it’s infusing, dynamic reservoir formatting is one serises infusing.Deep condensate gas involves primary type,crude oil cracking type, gas cutting enrichment type, inverse evaporation type and mixed type. Abnormal high pressure in the source rock liquid is the main original drive for oil and gas accumulation and migration, give priority to sand body migration Pathways and surrounding distributing, dividing into three reservoir formation:Es1-Ed, the time of DongYing tectogenesis and 7-5Ma since Neocene.
     There are mainly 3 factors controlling coal bed gas reservoir formation comprising of effective source rock, transport system and cap rock, among which gas generation center controls gas reservoir distribution, transport system constrains gas accumulation and migration and cap rock limits vertical enrichment of the gas. It is summed up that principle factors controlling condensate gas reservoir formation includes source rock, reservoir formation time, transport system and cap rock. Parent material of source rock controls condensate gas enrichment. Deep burial and late reservoir formation are favorable for development and preservation of deep condensate gas. Transport system controls condensate gas accumulation, migration and accumulation and cap rock controls vertical enrichment of natural gas.
引文
[1]蒋有录.气藏与油藏形成和保存条件差异问题讨论[J].天然气地球科学,1998,9(2):2-6
    [2]包茨.天然气地质学[M].北京:科学出版社,1998,1-10
    [3]郝石生,黄志龙,杨家琦.天然气运聚动平衡及其应用[M].北京:石油工业出版社,1994
    [4]戴金星,王庭斌,宋岩,等.中国大中型天然气田形成条件与分布规律[M].北京:地质出版社,1997,194-495
    [5]宋岩,戴金星,李先奇,等:中国大中型气田主要地球化学和地质特征[J].石油学报,1998,19(1):1-5
    [6]杨俊杰,谢庆邦,宋国初.鄂尔多斯盆地奥陶系风化壳古地貌成藏模式及气藏序列[J].天然气工业,1992,12(4):8-13
    [7]宋岩,戴金星,戴春森,等.我国大中型气田主要成藏模式及其分布规律[J].中国科学(D辑),1996,26(6):499-503
    [8]何家雄,等.莺歌海盆地泥底辟带天然气成藏条件及勘探方向[J].中国海上油(地质),1995,9(3):157-163
    [9]顾兴松.柴达木盆地第四系生物气藏的形成与模式[J].天然气工业,1996,16(5):6-9
    [10]郝石生,陈章明,高耀斌,等.天然气藏的形成与保存[M].北京:石油工业出版社, 1997,54-56
    [11]戴金星,卫延召,赵靖舟.晚期成藏对大气田形成的重大作用[J].中国地质, 2003, 30(1):10-18
    [12]赵文智,窦立荣,宋岩.我国天然气地质研究与勘探的新进展[J].天然气工业, 2000, 20(3):1-6
    [13]王涛.中国深盆气田[M].北京:石油工业出版社,2002,15-28
    [14]宋岩,洪峰.四川盆地川西坳陷深盆气地质条件分析[J].石油勘探与开发, 2001, 28(2):11-14
    [15]金之钧,张金川.天然气成藏的二元机理模式[J].石油学报,2003,24 (4):13-16
    [16]张金川,金之钧,庞雄奇.深盆气藏成藏条件及其内部结构[J].石油试验地质, 2000,23(3):210-214
    [17]周兴熙.源盖共控论述要[J].石油勘探与开发,1997,24(6):4-7
    [18]戴金星,宋岩,张厚福.中国大中型气田形成的主要控制因素[J].中国科学(D辑),1996,26(6):481-487
    [19]王涛.中国天然气地质理论基础与实践[M].北京:石油工业出版社,1997
    [20]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
    [21]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[J].科学通报,1984,(1):41-44.
    [22]彭君,武晓玲.东濮凹陷马厂地区油气聚集规律[J].山东科技大学学报(自然科学版)2003,22(1)100-103
    [23]黄保家,董伟良.莺歌海盆地烃源岩特征及天然气生成演化模式[J].天然气工业.2002.(1).26-30
    [24]刘文汇,刘全有,徐永昌等.天然气地球化学数据的获取及应用[J].天然气地球科学,2003,14(1):21-29.
    [25]蒋助生,罗霞,李志生等.苯、甲苯碳同位素组成作为气源对比新指标的研究[J].地球化学,2000,29(4).
    [26]冯建辉,任战利,崔军平,等.东濮凹陷杜桥白地区天然气气源岩分析[J].沉积学报,2003,21(2):350-359
    [27]黄汝昌主编.中国低熟油及凝析气藏形成与分布规律[M].北京:石油工业出版社,1997
    [28]周兴熙.库车油气系统烃类的流体相态特征研究[J].天然气工业, 2001,21(2):82-85
    [29]张厚福.石油地质学[M].北京:石油工业出版社.1999,62-69
    [30]周兴熙,李绍基,陈义才.塔里木盆地凝析气形成[J].石油勘探与开发,1996,23(6):7-11
    [31]马柯阳,周永红,申建中.塔里木盆地气-液溶解平衡机制下原油轻烃行为及其地质意义[J].沉积学报,1995,13(4):100-108
    [32] Rigers M A. Application of organic facies concept to hydrocarbon source rock evaluation. Proc 10th World Petroleum Congress,1979,2:23-30
    [33] Snowdon L R ,Powell T G ,Immature oil and condensate modifica- tion by hydrocarbon generation model for terrestrial organic material.AAPG Bulletin,1982,66(6):775-778
    [34]周兴熙,等著.塔里木盆地天然气形成条件及分布规律[M],北京:石油工业出版社,1998.
    [35]赵新国,苏玉山,季增本,等.东濮凹陷西部斜坡带潜山成藏条件与成藏模式[J].复式油气田,1999,9(3):15-17
    [36]武晓玲,卢福长,邹森林,等.东濮凹陷杜桥白地区深层气成藏条件及成藏模式[J].江汉石油学院学报,2000,22(4):14-17
    [37]武晓玲,于少勇,马雅雅,等.试析东濮凹陷桥口构造油气的深化勘探[J].断块油气田,2000,7(3):8-10
    [38]彭君,王秀林,武晓玲,等.东濮凹陷中央隆起带南部油气成藏模式[J].大庆石油地质与开发,2003,22(5):8-10
    [39]熊利平,王运所,许化政,等.东濮凹陷文留盐下煤成气聚集系数研究[J].石油实验地质,2003,25(1):64-75
    [40]苏玉山,张联盟,吴莉芝,等.渤海湾盆地东濮凹陷杜桥白地区深层天然气成藏规律[J].石油实验地质,2002,24(5):418-422
    [41]何建国,盖东玲,张加友,等.东濮凹陷油气藏成藏规律研究[J].西南石油学院学报,2002,24(6):15-17
    [42]张和斌,杨瑜贵,张毅,等.东濮凹陷南部地区深层气藏盖层特征研究[J].西南石油学院学报,2002,24(2):18-23
    [43]张云鹏,张蓬勃,杨庆文,等.东濮凹陷浅层气成藏规律分析[J].断块油气田,1998,5(5):13-17
    [44]王德仁,周开义,常俊合,等.东濮凹陷煤系烃源岩评价的几个问题[J].大庆石油地质与开发,2003,22(6):11-12
    [45]杨池银.板桥凹陷深层天然气气源对比与成因分析[J].天然气地球科学,2003,14(1):47-52
    [46]曾大乾,杨依超,刘振兴,等.东濮凹陷文留地区成藏模式[J].江汉石油学院学报,2000,22(4):10-13
    [47]樊生利,王秀林,苏玉山.东濮凹陷断裂系统构造格局与油气聚集[J].断块油气田,1995,2(3):16-23
    [48]纪友亮,冷胜荣.东濮地区风化壳储层特征及油气藏的形成[J].石油大学学报(自然科学版),1994,18(3):12-18
    [49]梁正生,谢恭俭,马群,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):16-20
    [50]袁先春,赵新国,刘小红,等.东濮凹陷古潜山勘探潜力分析[J].石油勘探与开发,2004,28(2):29-32
    [51]常俊合,李新军,吕红玉,等.东濮凹陷文留潜山构造文古2井原油地球化学特征和油源研究[J].石油与天然气地质,2004,25(1):44-49
    [52]黄桂雄,李令喜,刘忠亮,等.东濮凹陷马厂地区潜山成藏条件分析及下步勘探方向[J].江汉石油学院学报,2004,26(4):49-51
    [53]任战利,赵重远,张军,等.鄂尔多斯盆地古地温研究[J].沉积学报,1994,12(1):56-65
    [54]李荣西,廖永胜.济阳坳陷石炭-二叠系热演化与生烃阶段[J].地球学报, 2001, 22(1) :85-90.
    [55]姚合法,任玉林,申本科.渤海湾盆地中原地区古地温梯度恢复研究[J].地学前缘,2006,13(3) :135-140.
    [56]冯建辉,谈玉明,罗小平,等.东濮凹陷白庙构造油气源与成藏史[J].石油天然气地质,2003,24(2):130-134.
    [57]周章保,姚合法,何锋等.中原地区奥陶系烃源岩特征和二次成烃潜力[J].海相油气地质,2001,6(3) :22-25.
    [58] Burnharn A.K. 1989.A simple kinetic model of petroleum formation and cracking [J] . Geochim.Cosmochim.Acta, 43:1979-1988
    [59] Lorant F, Prinzhofer A, Behar F, et al. Carbon isotope and molecular constraints on the formation and the expulsion of thermogenic hydrocarbon gases[J]. Chem Geol, 1998, 147: 249~264
    [60] Behar F, Kressmann S, et al.1991.Experimental simulation in confined system and kinetic modeling of kerogen and oil cracking[J]. Organic Geochemistry, 19: 173-189
    [61]赵孟军,张水昌,廖志勤.原油裂解气在天然气勘探中的意义[J].石油勘探与开发,2001,29(4):47-49
    [62]谢增业,田世澄,魏国齐,等.川东北飞仙关组储层沥青与古油藏研究[J].天然气地球科学,2005,16(3):283-287
    [63]戴金星,戚厚发,宋岩.鉴别煤成气和油型气若干指标的初步探讨[J].石油学报,1985,(2):31-38
    [64]沈平,徐永昌,王先彬,等.气源岩和天然气地球化学特征及成烃机理研究[M].兰州:甘肃科学出版社,1991
    [65] Thompson,K.F.M,1979,light hydrocarbon in subsurface sediments, Geochim. Cosmochim. Acta,43:647-627
    [66]冯建辉.东濮凹陷杜桥白深层油气成藏机理及控制因素研究: [博士学位论文],中国科学院研究生院,广州:2003
    [67]刘泽容,张晋仁,主编.油藏评价与预测[M].北京:石油工业出版社,1993,5-24
    [68]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[J].地质论评,1997,43(5):540-545
    [69]张有瑜,罗修泉.油气储层自生伊利石K-Ar同位素年代学研究现状与展望[J].石油与天然气地质,2004,25(2):231-236
    [70]任战利,冯建辉,崔军平,等.东濮凹陷杜桥白地区天然气藏的成藏期次[J].石油与天然气地质,2002,23(4):376-380.
    [71]任战利,崔军平,冯建辉,等.东濮凹陷桥口地区油气藏形成期次研究[J].石油勘探与开发,2002,29(6):15-18
    [72]柳少波,顾家裕.包裹体在石油地质研究中的应用与问题讨论[J].石油与天然气地质,1997,8(4):326-331
    [73]赵靖舟.塔里木盆地烃类流体包裹体与成藏年代分析[J].石油勘探与开发,2002, 29(4):21-24
    [74]赵靖舟.油气包裹体在成藏年代学研究中的应用实例分析[J].地质地球化学,2002,30(2):83-88
    [75]蒋有录,谭丽娟,荣启宏,等.油气成藏系统的概念及其在东营凹陷博兴地区的应用[J].石油大学学报(自然科学版),2002,26(6):12-16

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700