天然气地球科学

• 天然气地质学 • 上一篇    下一篇

鄂尔多斯盆地西南部上古生界烃源岩特征及其对天然气藏形成与分布的控制作用

胡维强,赵靖舟,李军,李磊,郑杰,井向辉   

  1. 1.西安石油大学地球科学与工程学院,陕西 西安 710065;
    2.陕西省油气成藏地质学重点实验室,陕西 西安 710065;
    3.中国石油长庆油田分公司勘探开发研究院,陕西 西安 710018
  • 收稿日期:2014-11-04 修回日期:2014-12-25 出版日期:2015-06-10 发布日期:2015-06-10
  • 通讯作者: 赵靖舟(1962-),男,陕西临潼人,教授,博士,主要从事油气成藏地质学、天然气地质和地球化学研究.E-mail:jzzhao@xsyu.edu.cn.
  • 作者简介:胡维强(1988-),男,湖北咸宁人,硕士研究生,主要从事油气成藏地质学研究.E-mail:huweiqiangh@163.com.
  • 基金资助:

    国家科技重大专项项目(编号:2011ZX05007-004)资助.

Characteristics of Source Rocks and Its Controls on the Formation and Distribution of Gas from Upper Paleozoic in Southwest Ordos Basin

HU Wei-qiang,ZHAO Jing-zhou,LI Jun,LI Lei,ZHENG Jie,JING Xiang-hui   

  1. 1.School of Earth Sciences and Engineering Xi′an Shiyou University,Xi′an 710065,China;
    2.Shaanxi Key Lab of Petroleum Accumulation Geology,Xi′an 710065,China;
    3.Research Institute of Exploration and Development,Changqing Oilfield Company,PetroChina,Xi′an 710018,China
  • Received:2014-11-04 Revised:2014-12-25 Online:2015-06-10 Published:2015-06-10

摘要:

利用有机质丰度、类型、成熟度及生气强度指标对鄂尔多斯盆地西南部上古生界烃源岩进行综合分析,确定主力气源岩及平面分布特征,并与苏里格地区气源条件进行对比,分析气源条件对天然气藏形成与分布的控制作用。研究表明,研究区上古生界烃源岩包括山西组、太原组的煤层和暗色泥岩,其中煤层是主力烃源岩,平均厚度为4.7m,苏里格地区煤层平均厚度为14m。烃源岩有机质丰度较高,山西组和太原组煤层残余有机碳均值分别为54.94%和66.96%,泥岩残余有机碳均值分别为2.88%和1.75%;干酪根碳同位素值介于-24.56‰~-22.05‰之间,属于Ⅲ型干酪根;镜质体反射率介于1.6%~3.2%之间,均值为2.3%,整体处于高成熟—过成熟阶段;研究区生气强度介于 (8~20)×108m3/km2之间,而苏里格地区的介于(11~29)×108m3/km2之间。与苏里格地区相比,研究区气源条件略显较差。研究区的气源条件对气藏的形成与分布起着明显的控制作用。平面上研究区的产气井主要分布在煤层厚度大于4m,生气强度大于10×108m3/km2的区域,且存在随着烃源岩条件的变好含气性也变好的趋势;纵向上天然气垂向运移距离与煤层厚度和生气强度存在良好的正相关关系,煤层厚度越大、生气强度越高,天然气垂向运移距离越远。

关键词: 上古生界, 烃源岩, 气源条件, 控制作用, 运移

Abstract:


By using abundance,type,maturity and gas generation intensity of organic matter,the comprehensive analysis of Upper Paleozoic source rocks in southwest Ordos Basin has been made to determine the plane distribution characteristics of main gas reservoirs,and the controlling effects of gas source rock on the formation are analyzed,which has been compared with that in the Sulige area.The Upper Paleozoic source rocks are composed of coal and dark mudstone of Shanxi Formation,Taiyuan Formation,of which coal seams are main source rocks.The average thickness of coal seams is 4.7m in the study area,while 14m in Sulige.Source rocks are abundant in organic matters.That is,the mean residual TOC in coal seam of the second member of Shanxi Formation and Taiyuan Formation are 54.94% and 66.96%,respectively and in mudstone are 2.88% and 1.75%,respectively;The carbon isotope of kerogen varies from -24.56‰ to -22.05‰,indicating that the kerogen belongs to type Ⅲ;Vitrinite reflectance of organic matter is 1.6%-3.2%,with an average of 2.3%,which is at high to over-mature stage.Gas generation intensity is mainly between (8-20)×108m3/km2,while between (11-29)×108m3/km2 in Sulige region.Compared with the condition of gas source rocks of Sulige region,condition in the study area is slightly bad.Condition of source rocks controls the formation and distribution of gas reservoir in the study area.Horizontally,gas-producing wells are mainly distributed in coal seams with thickness more than 4m and gas generation intensity greater than 10×108m3/km2,showing a trend that the better the source rocks,the more the hydrocarbon content.Vertically,it has a good positive correlation among the vertical migration distance of gas migration,the thickness of coal seam and gas generation intensity.That is,the vertical migration distance of gas becomes farther along with greater thickness of coal seam and higher gas generation intensity.

 

Key words: Upper Paleozoic, Hydrocarbon source rocks, Gas source rocks conditions, Control action, Migration

中图分类号: 

  • TE122.3

[1]Ma Xinhua.Natural gas exploration and development situation in Ordos Basin[J].Petroleum Exploration and Development,2005,32(4):50-53.[马新华.鄂尔多斯盆地天然气勘探开发形势分析[J].石油勘探与开发,2005,32(4):50-53.]
[2]Guo Jianyu,Zhang Dalin,Deng Hongwen,et al.Resource assessment methodology of oil and gas in the areas of low-degree prospecting[J].Petroleum Geology and Recovery Efficiency,2006,13(6):43-45.[郭建宇,张大林,邓宏文,等.低勘探程度区域油气资源评价方法[J].油气地质与采收率,2006,13(6):43-45.]
[3]Zhao Zhengzhang,Zhao Xianzheng,He Haiqing.China′s recent oil and gas exploration results in new area and prospect for future development[J].China Petroleum Exploration,2002,7(3):1-6.[赵政璋,赵贤正,何海清.中国石油近期新区油气勘探成果及面临的挑战与前景展望[J].中国石油勘探,2002,7(3):1-6.]
[4]Fu Jinhua,Duan Xiaowen,Xi Shengli.Characteristics of Upper Paleozoic gas reservoirs in Ordos Basin[J].Natural Gas Industry,2000,20(6):16-19.[付金华,段晓文,席胜利.鄂尔多斯盆地上古生界气藏特征[J].天然气工业,2000,20(6):16-19.]
[5]Chen Quanhong,Li Wenhou,Jiang Peihai,et al.The analysis of hydrocarbon accumulation condition of Upper Paleozoic of the southwest Ordos Basin[J].Petroleum Geology & Experiment,2007,29(6):554-559.[陈全红,李文厚,姜培海,等.鄂尔多斯盆地西南部上古生界油气成藏条件分析[J].石油实验地质,2007,29(6):554-559.]
[6]Zhang Jinliang,Zhang Jingong,Hong Feng,et al.Geologic controls of deep basin gas accumulations in the lower Permian sequence of the Ordos Basin[J].Natural Gas Geoscience,2005,16(4):526-534.[张金亮,张金功,洪峰,等.鄂尔多斯盆地下二叠统深盆气藏形成的地质条件[J].天然气地球科学,2005,16(4):526-534.]
[7]Chang Xiangchun,Wang Mingzhen.Unconventional gas system of Upper Paleozoic in Ordos Basin[J].Natural Gas Geoscience,2005,16(6):732-735.[常象春,王明镇.鄂尔多斯盆地上古生界非常规含气系统[J].天然气地球科学,2005,16(6):732-735.]
[8]Yang Hua,Xi Shengli,Wei Xinshan,et al.Evolution and and natural gas enrichment of multi-cycle superimposed basin in Ordos Basin[J].China Petroleum Exploration,2006,11(1):17-24.[杨华,席胜利,魏新善,等.鄂尔多斯多旋回叠合盆地演化与天然气富集[J].中国石油勘探,2006,11(1):17-24.]
[9]Li Desheng.Return to petroleum geology of Ordos Basin[J].Petroleum Exploration and Development,2004,31(1):1-7.[李德生.重新认识鄂尔多斯盆地油气地质学[J].石油勘探与开发,2004,31(1):1-7.]
[10]Yang Suizheng,Jin Wenhua,Li Zhenhong.Multicycle superimposed basin form and evolution of Ordos Basin[J].Natural Gas Geoscience,2006,17(4):494-498.[杨遂正,金文化,李振宏.鄂尔多斯多旋回叠合盆地形成与演化[J].天然气地球科学,2006,17(4):494-498.]
[11]Yang Yihua,Bao Hongping,Jia Yani,et al.Analysis on control factors of sandstone reservoir of the Upper Paleozoic in Ordos Basin[J].Journal of Paleogeography,2008,10(1):25-32.[杨奕华,包洪平,贾亚妮,等.鄂尔多斯盆地上古生界砂岩储集层控制因素分析[J].古地理学报,2008,10(1):25-32.]
[12]Qin Jianzhong.Source Rock of China[M].Beijing:Science Press,2005:252-258.[秦建忠.中国烃源岩[M].北京:科学出版社,2005:252-258.]
[13]Lu Shuangfang,Zhang Min.Petroleum Geochemistry[M].Beijing:Petroleum Industry Press,2008:201-219.[卢双舫,张敏.油气地球化学[M].北京:石油工业出版社,2008:201-219.]
[14]Wang Feng,Tian Jingchun,Chen Rong,et al.Analysis on controlling factors and characteristics of sandstone reservoir of He 8 (Upper Paleozoic) in the northern Ordos Basin[J].Acta Sedmentologicy Sinica,2009,27(2):238-245.[王峰,田景春,陈蓉,等.鄂尔多斯盆地北部上古生界盒8储层特征及控制因素分析[J].沉积学报,2009,27(2):238-245.]
[15]Zhao Jingzhou.Conception,classification and resource potential of unconventional hydrocarbons[J].Natural Gas Geoscience,2012,23(3):393-406.[赵靖舟.非常规油气有关概念、分类及资源潜力[J].天然气地球科学,2012,23(3):393-406.]
[16]Zhao Jingzhou,Fu Jinhua,Yao Jingli,et al.Quasi-continuous accumulation model of large tight sandstond gas field in Ordos Basin[J].Acta Petrolei Sinica,2012,33(S1):37-52.[赵靖舟,付金华,姚泾利,等.鄂尔多斯盆地准连续型致密砂岩大气田成藏模式[J].石油学报,2012,10(S.1):37-52.]
[17]Cao Qing,Zhao Jingzhou,Fu Jinghua,et al.Gas source conditions of quasi-continuous of the Upper Paleozoic in Ordos Basin[J].Oil & Gas Geology,2013,34(5):584-590.[曹青,赵靖舟,付金华,等.鄂尔多斯盆地上古生界准连续型气藏气源条件[J].石油与天然气地质,2013,34(5):584-590.]
[18]Ding Xiaoqi,Zhang Shaonan,Zhou Wen,et al.Characteristics and genesis of the Upper Paleozoic tight sandstone reservoirs in the northern Ordos Basin[J].Oil & Gas Geology,2007,28(4):491-496.[丁晓琪,张哨楠,周文,等.鄂尔多斯盆地北部上古生界致密砂岩储层特征及其成因探讨[J].石油与天然气地质,2007,28(4):491-496.]
[19]Li Jun,Zhao Jingzhou,Fan Yuanfang,et al.Gas migration mechanism of quasi-continuous accumulation in the Upper Paleozoic of Ordos Basin[J].Oil & Gas Geology,2013,34(5):592-600.[李军,赵靖舟,凡元芳,等.鄂尔多斯盆地上古生界准连续型气藏天然气运移机制[J].石油与天然气地质,2013,34(5):592-600.]
[20]Zhao Jingzhou,Bai Yubin,Cao Qing,et al.Quasi-continuous hydrocarbon accumulation:A new pattern for large tight sand oilfield in Ordos Basin[J].Oil & Gas Geology,2012,33(6):811-827.[赵靖舟,白玉彬,曹青,等.鄂尔多斯盆地准连续型低渗透—致密砂岩大油田成藏模式[J].石油与天然气地质,2012,33(6):811-827.]
[21]Wang Xiaomei,Zhao Jingzhou,Liu Xinshe,et al.Distribution of formation water in tight sandstone reservoirs of western Sulige Gasfield,Ordos Basin[J].Oil & Gas Geology,2012,33(5):802-810.[王晓梅,赵靖舟,刘新社,等.苏里格气田西区致密砂岩储层地层水分布特征[J].石油与天然气地质,2012,33(5):802-810.]

[1] 傅宁,刘建升. 北部湾盆地流二段3类烃源岩的生烃成藏特征[J]. 天然气地球科学, 2018, 29(7): 932-941.
[2] 康毅力,豆联栋,游利军,陈强,程秋洋. 富有机质页岩增产改造氧化液浸泡离子溶出行为[J]. 天然气地球科学, 2018, 29(7): 990-996.
[3] 贾智彬,侯读杰,孙德强,姜玉涵,张自鸣,洪梅. 贵州地区牛蹄塘组底部烃源岩地球化学特征[J]. 天然气地球科学, 2018, 29(7): 1031-1041.
[4] 程志强,王飞宇,师玉雷,冯伟平,谢佩宇,任利兵,吴子强,江涛,赵志刚. 二连盆地乌里雅斯太凹陷南洼烃源岩有机相与生烃特征[J]. 天然气地球科学, 2018, 29(5): 696-707.
[5] 葛岩,朱光辉,万欢,潘新志,黄志龙. 鄂尔多斯盆地东缘紫金山侵入构造对上古生界致密砂岩气藏形成和分布的影响[J]. 天然气地球科学, 2018, 29(4): 491-499.
[6] 申宝剑,秦建中,腾格尔,潘安阳,仰云峰,边立曾. 中国南方海相烃源岩中细菌状化石识别[J]. 天然气地球科学, 2018, 29(4): 510-517.
[7] 贺领兄,宋维刚,安生婷,徐永锋,沈娟,路超,王军. 青海东昆仑地区八宝山盆地烃源岩有机地球化学特征与页岩气勘探前景[J]. 天然气地球科学, 2018, 29(4): 538-549.
[8] 邢 舟,曹高社,毕景豪,周新桂,张交东. 南华北盆地禹州地区ZK0606钻孔上古生界煤系烃源岩评价[J]. 天然气地球科学, 2018, 29(4): 518-528.
[9] 杨飞,蒲秀刚,姜文亚,韩文中,张伟,时战楠,林常梅. 渤海湾盆地沧东凹陷孔二段细粒相区有机地球化学特征[J]. 天然气地球科学, 2018, 29(4): 550-558.
[10] 白雪峰, 梁江平, 张文婧, 付丽, 彭建亮, 薛涛, 杨立伟, 刘继莹. 松辽盆地北部深层天然气地质条件、资源潜力及勘探方向[J]. 天然气地球科学, 2018, 29(10): 1443-1454.
[11] 秦胜飞,罗平,王铜山,王蓝军,马奎. 华北南缘东部新元古界冰碛砾岩层系中优质烃源岩的发现及地质意义[J]. 天然气地球科学, 2018, 29(1): 55-61.
[12] 李玉婷,黄志龙,安成龙,马强,王瑞,辛铭. 三塘湖盆地石炭系哈尔加乌组上、下段烃源岩特征及差异[J]. 天然气地球科学, 2018, 29(1): 73-86.
[13] 陈晓艳,田福清,邹华耀,郭柳汐,芦晓伟,殷杰,王道军. 湖相烃源岩热演化生烃研究——基于冀中坳陷烃源岩加水热模拟实验[J]. 天然气地球科学, 2018, 29(1): 103-113.
[14] 包建平,何丹,朱翠山,刘玉瑞,王文军,刘宏宇. 北部湾盆地迈陈凹陷徐闻X3井原油地球化学特征及其成因[J]. 天然气地球科学, 2017, 28(5): 665-676.
[15] 王鹏,沈忠民,何崇康,王君泽,黄飞,潘树林,尹帅. 天然气中丁烷地球化学特征及应用[J]. 天然气地球科学, 2017, 28(4): 529-538.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!