鄂尔多斯盆地古隆起东侧奥陶系马家沟组中组合成藏地质条件

doi:10.11743/ogg20130505

摘要/Abstract

摘要：

鄂尔多斯盆地古隆起东侧奥陶系马家沟组中组合发育白云岩储层,其特征明显有别于靖边气田奥陶系顶部风化壳储层。通过储层岩性分析、流体包裹体测试分析,结合钻井、地球化学、试油等相关资料,从烃源、储层、沉积等方面对鄂尔多斯盆地古隆起东侧马家沟组中组合成藏地质条件进行了系统分析。结果表明,古隆起东侧马家沟组中组合马5⁵ 、马5⁷和马5⁹亚期处于次一级海侵沉积背景,水动力条件强,滩相沉积发育,在隆起周边形成自形程度高的粗粉晶-细晶结构的晶粒状白云岩储层,具有晶粒均一、连通性好且发育白云石晶间孔等特征;受加里东末期构造抬升运动影响,古隆起东侧奥陶系顶部剥露为中组合地层,与上覆上古生界煤系烃源岩直接接触,形成了良好的源、储配置关系;受上倾方向岩相变化控制,在空间上中组合滩相白云岩逐渐相变为泥晶灰岩,形成分布不连续、局部富集的岩性圈闭。

关键词: 成藏条件, 中组合, 马家沟组, 奥陶系, 古隆起, 鄂尔多斯盆地

Abstract:

The dolomite reservoirs in middle reservoir-source rock combination of the Ordovician Majiagou Formation on the east side of paleo-uplift in Ordos Basin are obviously different from the weathering crust reservoirs at the top of the Ordovician in Jinbian gas field.A systematic study had been carried out on the geological conditions for hydrocarbon accumulation in these dolomite reservoirs in respect of source rocks,reservoirs,sedimentation based on results of reservoir lithology characterization and fluid inclusion testing as well as analysis of drilling data,geochemical and testing data.The results show that the middle reservoir-source rock combination of the Formation experienced strong hydrodynamics against a brief regression sedimentary settings.Beach facies were well developed and formed dolomite reservoirs.The dolomite features in highly automorphic coarse powder and fine-crystal texture,uniform grains,excellent connectivity and well-developed intercrystal pores.Affected by tectonic uplifting during the late Caledonian,the top Ordovician at eastern side of the paleo-uplift were denuded and came into contact with coal-measure source rocks,providing favorable source-reservoir combination.Controlled by lithofacies transformation at updip direction,the dolomites of beach facies in the middle reservoir-source rock combination of the Formation change gradually into micrite,forming discontinuous lithological traps.

Key words: reservoiring condition, middle reservoir-source rock combination, Majiagou Formation, Ordovician, paleo-uplift, Ordos Basin

中图分类号:

TE122.3

时保宏,刘亚楠,武春英,等. 鄂尔多斯盆地古隆起东侧奥陶系马家沟组中组合成藏地质条件[J]. 石油与天然气地质, 2013, 34(5): 610-618. doi: 10.11743/ogg20130505 Shi Baohong,Liu Yanan,Wu Chunying,et al. Geological conditions for hydrocarbon accumulation in middle reservoir-source rock combination of the Ordovician Majiagou Formation on the east side of the paleo-uplift in Ordos Basin[J]. Oil & Gas Geology, 2013, 34(5): 610-618. doi: 10.11743/ogg20130505

参考文献

[1] 郑聪斌,谢庆邦.陕甘宁盆地中部奥陶系风化壳储层特征[J].天然气工业,1993,13(5):26-30. Zheng Congbin,Xie Qingbang.Reservoir characteristics Ordovician weathered crust in the central part of ShanGanning Basin[J].Natural Gas Industry,1993,13(5):26-30.
[2] 郑聪斌,冀小琳,贾疏源.陕甘宁盆地中部奥陶系风化壳岩溶发育特征[J].中国岩溶,1995,14(3):280-288. Zheng Congbin,Ji Xiaolin,Jia Shuyuan.Palaeokarst features of Ordovician weathering crust in the centre of Shangganning Basin[J].Carsologica Sinica,1995,14(3):280-288.
[3] 杨华,付金华,魏新善,等.鄂尔多斯盆地奥陶系海相碳酸盐岩天然气勘探领域[J].石油学报,2011,32(5):733-741. Yang Hua,Fu Jinhua,Wei Xinshan,et al.Natural gas exploration domains in Ordovician marine carbonates,Ordos Basin[J].Acta Petrolei Sinica,2011,32(5):733-741.
[4] 雷卞军,张吉,王彩丽,等.高分辨率层序地层对微相和储层的控制作用——以靖边气田统5井区马五段上部为例[J].岩性油气藏,2008,20(1):1-7. Lei Bianjun,Zhang Ji,Wang Caili,et al.Control of high resolution sequence stratigraphy on microfacies and reservoirs:a case from the upper Ma 5 member in Tong 5 wellblock,Jingbian Gas Field[J].Litho-logic Reservoirs,2008,20(1):1-7.
[5] 时保宏,姚泾利,张艳,等.鄂尔多斯盆地延长组长 9 油层组成藏地质条件[J].石油与天然气地质,2013,34(3):294-300. Shi Baohong,Yao Jingli,Zhang Yan,et al.Geologic conditions for hydrocarbon accumulation in Chang-9 oil reservoir of the Yanchang Formation, Ordos Basin[J].Oil & Gas Geology,2013,34(3):294-300.
[6] 王作乾,何顺利.靖边下古生界气藏马五段碳酸盐岩储层综合评价[J].石油天然气学报,2009,31(4):180-183. Wang Zuoqian,He Shunli.Integrated evaluation of carbonate reservoir for Om⁵ of Lower Paleozoic gas reservoirin Jingbian area[J].Journal of Oil and Gas Technology,2009,31(4):180-183.
[7] 赵红格,刘池洋,王峰,等.鄂尔多斯盆地西缘构造分区及其特征[J].石油与天然气地质,2006,27(2):173-180. Zhao Hongge,Liu Chiyang,Wang Feng,et al.Structural division and characteristics in western edge of Ordos basin[J].Oil & Gas Geology,2006,27(2):173-180.
[8] 丁晓琪,张哨楠,谢世文,等.鄂尔多斯盆地镇泾地区中生界成藏系统[J].石油与天然气地质,2011,32(2):157-165. Ding Xiaoqi,Zhang Shaonan,Xie Shiwen,et al.Hydrocarbon accumulation system of the Mesozoic in ZhenJing oilfield,the Ordos Basin[J].Oil & Gas Geology,2011,32(2):157-165.
[9] 陈朝兵,朱玉双,谢辉,等.姬塬油田红井子地区延长组长9 油层组石油富集规律[J].石油与天然气地质,2012,33(5):758-765. Chen Zhaobing,Zhu Yushuang,Xie Hui,et al.Accumulation patterns of the Chang-9 oil reservoir in the Yanchang Formation of Hongjingzi area in Jiyuan oilfield[J].Oil & Gas Geology,2012,33(5):758-765.
[10] 刘春燕,宗敏,许化政,等.鄂尔多斯盆地南部奥陶系天然气成藏条件分析[J].世界地质,2012,31(3):536-547. Liu Chunyan,Zong Min,Xu Huazheng,et al.Analysis on accumulation condition of natural gas in southern Ordos Basin in Ordovician[J].Global Geology,2012,31(3):536-547.
[11] 侯方浩,方少仙,赵敬松,等.鄂尔多斯盆地中奥陶统马家沟组沉积环境模式[J].海相油气地质,2002,7(1):38-46. Hou Fanghao,Fang Shaoxian,Zhao Jingsong,et al.Depositional environment model of Middle Ordovician Majiagou formation in Ordos Basin[J].Marine Origin Petrdeum Geology,2002,7(1):38-46.
[12] 倪春华,周小进,王果寿,等.鄂尔多斯盆地南缘平凉组烃源岩沉积环境与地球化学特征[J].石油与天然气地质,2011,32(1):38-46. Ni Chunhua,Zhou Xiaojin,Wang Guoshou,et al.Sedimentary environment and geochemical characteristics of hydrocarbon source rocks in the Pingliang Formation,southern margin of the Ordos Basin[J].Oil & Gas Geology,2011,32(1):38-46.
[13] 杨华,包洪平.鄂尔多斯盆地奥陶系中组合成藏特征及勘探启示[J].天然气工业,2011,31(12):11-20. Yang Hua,Bao Hongping.Characteristics of hydrocarbon accumulation in the middle Ordovician assemblages and their significance for gas exploration in the Ordos Basin[J].Natural Gas Industry,2011,31(12):11-20.
[14] 王传刚,王毅,许化政,等.论鄂尔多斯盆地下古生界烃源岩的成藏演化特征[J].石油学报,2009,30(1):38-45. Wang Chuangang,Wang Yi,Xu Huazheng,et al.Discussion on evolution of source rocks in lower Paleozoic of Ordos Basin[J].Acta Petrolei Sinica,2009,30(1):38-45.
[15] 程付启,金强,刘文汇,等.鄂尔多斯盆地中部气田奥陶系风化壳混源气成藏分析[J].石油学报,2007,28(1):38-42. Cheng Fuqi,Jin Qiang,Liu Wenhui,et al.Formation of source-mixed gas reservoir in Ordovician weathering crust in the central gas-field of Ordos Basin[J].Acta Petrolei Sinica,2007,28(1):38-42.
[16] 黄第藩,熊传武,杨俊杰,等.鄂尔多斯盆地中部大气田的气源判识[J].科学通报,1996,41(17):1588-1592. Huang Difan,Xiong Chuanwu,Yang Junjie,et al.Gas source discri-mination of central gas field in Ordos Basin[J],Chinese Science Bulletin,1996,41(17):1588-1592.
[17] 米敬奎,王晓梅,朱光有,等.利用包裹体中气体地球化学特征与源岩生气模拟实验探讨鄂尔多斯盆地靖边气田天然气来源[J].岩石学报,2012,28(3):859-869. Mi Jingkui,Wang Xiaomei,Zhu Guangyou,et al.Origin determination of gas from Jingbian gas field in Ordos basin collective through the geochemistry of gas from inclusions and source rock pyrolysis[J].Acta Petrologica Sinica,2012,28(3):859 - 869.
[18] 赵俊兴,陈洪德,张锦泉,等.鄂尔多斯盆地中部马五段白云岩成因机理研究[J].石油学报,2005,26(5):38-41. Zhao Junxing,Chen Hongde,Zhang Jingquan,et al.Genesis of dolomite in the fifth member of Majiagou formation in the middle Ordos Basin[J].Acta Petrolei Sinica,2005,25(1):38-41.
[19] 付金华,王宝清,孙六一,等.鄂尔多斯盆地苏里格地区奥陶系马家沟组白云石化[J].石油实验地质,2011,33(3):266-273. Fu jinhua,Wang Baoqing,Sun liuyi,et al.Dolomitization of Ordovician Majiagou Formation in Sulige region,Ordos Basin[J].Petroleum Geology & Experiment,2011,33(3):266-273.
[20] 包洪平,杨承运.碳酸盐岩层序分析的微相方法——以鄂尔多斯东部奥陶系马家沟组为例[J].海相油气地质,2000,5(1-2):153-157. Bao Hongping,Yang Chengyun.Micro-facies method of carbonate strata sequence analysis—take eastern Ordos basin Ordovician Majiagou group for example[J].Marine Origin Petroleum Geology,2000,5(1-2): 153-157.
[21] 黄擎宇,张哨楠,丁晓琪,等.鄂尔多斯盆地西南缘奥系马家沟组白云岩成因研究[J].石油实验地质,2010,32(2):147-153. Huang Qingyu,Zhang Shaonan,Di Xiaoqi,et al.Origin of dolomite of Ordovician Majiagou Formation,western and southern margin of the Ordos Basin[J].Petroleum Geology & Experimet,2010,32(2):147-153.
[22] Tucker M.Sequence stratigraphy of carbon at teevaporite basins:models and application to the Upper Permian(Zechstein) of northeast England and adjoining North Sea[J].Journal of the Geological Society,1991,148:1019-1936.
[23] 康立明,苏道敏,曹林川.鄂尔多斯盆地元城地区储层微观孔隙结构特征[J].断块油气田,2011,18(3):338-341. Kang Liming,Su Daomin,Cao Linchuan.Characteristics of reservoir microscopic pore structure in Yuancheng Area of Ordos Basin[J].Fault-Block Oil & Gas Field,2011,18(3):338-341.
[24] 时保宏,张艳,张雷,等.鄂尔多斯盆地延长组长7致密储层流体包裹体特征与成藏期次[J].石油实验地质,2012,34(6):599-603. Shi Baohong,Zhang Yan,Zhang Lei,et al.Hydrocarbon accumulation dating by fluid inclusion characteristics in chang7 tight sandstone reservoirs of Yanchang Formation in Ordos Basin[J].Petroleum Geology & Experiment,2012,34(6):599-603.