天然气地球科学

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川南长宁地区五峰组—龙马溪组页岩脆性特征

张晨晨1,王玉满1,董大忠1,2,3,管全中1   

  1. 1.中国石油勘探开发研究院,北京  100083;
    2.中国石油勘探开发研究院廊坊分院,河北 廊坊 065007;
    3.国家能源页岩气研发(实验)中心,河北 廊坊 065007
  • 收稿日期:2016-04-11 修回日期:2016-06-03 出版日期:2016-09-10 发布日期:2016-09-10
  • 通讯作者: 董大忠(1962-),男,四川苍溪人,教授级高级工程师,博士,主要从事油气资源评价与发展战略、非常规油气资源地质勘探与开发研究. E-mail:ddz@petrochina.com.cn.
  • 作者简介:张晨晨(1991-),女,河南南阳人,硕士研究生,主要从事页岩气储层地质评价研究. E-mail:15624960659@163.com.
  • 基金资助:
    中国石油股份公司重大科技专项“中国石油第四次油气资源评价”项目(编号:2013E-0502);国家重点基础研究发展计划(“973”计划)项目(编号:2013CB228001);国家科技重大专项(编号:2011ZX05018-001)联合资助.

Brittleness characteristics of Wufeng-Longmaxi shale in Changning region,Southern Sichuan,China

Zhang Chen-chen1,Wang Yu-man1,Dong Da-zhong1,2,3,Guan Quan-zhong1   

  1. 1.PetroChina Research Institute of Petroleum Exploration & Development,Beijing 100083,China;
    2.PetroChina Research Institute of Petroleum Exploration & Development-Langfang Branch,Langfang 065007,China;
    3.National Energy Shale Gas R&D (Experiment)Center,Langfang 065007,China
  • Received:2016-04-11 Revised:2016-06-03 Online:2016-09-10 Published:2016-09-10

摘要: 脆性是页岩气储层地质评价的重要内容。以露头和钻井资料为基础,提出基于“石英、白云石和黄铁矿”3种矿物的脆性指数计算方法,并结合弹性参数脆性指数法对川南长宁地区五峰组—龙马溪组页岩脆性特征进行了定量评价;在此基础上着重分析了脆性指数与矿物组成和有机碳含量的相关性;应用“矿物三端元+沉积微相”法,在有利岩相研究的基础上,综合页岩脆性特征对研究区“甜点层”进行了进一步的优选。结果表明:研究区五峰组—龙马溪组底部厚度约30~40m的页岩段脆性最好,矿物脆性指数达50%~75%,杨氏模量平均为37.84GPa,泊松比平均为0.19,弹性参数脆性指数平均为61%,且自下而上脆性变差;脆性指数与矿物组成和有机碳含量的相关性显著,反映了沉积环境对页岩脆性特征的重要影响;长宁地区的“甜点层”为深水陆棚发育的硅质页岩相和钙质硅质混合页岩相,平均脆性指数大于50%,平均有机碳含量大于3%,分布于五峰组至鲁丹阶中下部,累计厚度约为42m。

关键词: 页岩, 脆性, 矿物组成, TOC, 沉积环境, 岩相

Abstract: Brittleness is significant for geological evaluation of shale-gas reservoirs.Based on outcrop and drilling data,this paper first proposed a new brittleness index,which use quartz,dolomite and pyrite as brittle components,and evaluated the brittleness of Wufeng-Longmaxi shale in Changning region,Southern Sichuan combined with the elastic parameters-based index.And then we analyzed the relationship between brittleness and mineral composition,TOC.Applying “ternary diagram combined with depositional microfacies” method to classify the lithofacies types of Wufeng-Longmaxi shale,we further selected the “sweet spot” layer on the basis of favorable lithofacies according to previous studies.The results showed that:(1)The lower part of Wufeng-Longmaxi shale,with appropriate thickness of 30-40m,has the best brittleness characteristics:mineral-based brittleness index of 50%-75%,Young’s Modulus of 37.84GPa,Poisson’s Ratio of 0.19,and average elastic parameters-based brittleness index of 61%.And the brittleness index decreases upward.(2)Brittleness index correlates well with mineral composition and TOC,reflecting the control of depositional environment on shale brittleness.(3)Siliceous and calcareous-siliceous shale deposited in deep-water shelf,which were developed in Wufeng to the middle-lower part of Rhuddanian with average brittleness index>50%,average TOC>3% and total thickness of appropriately 42m,are “sweet spot” layer in Changning region.

Key words: Shale, Brittleness, Mineral composition, TOC, Depositional environment, Lithofacies

中图分类号: 

  • TE122.1

[1]Jiang Yuqiang,Dong Dazhong,Qi  Lin,et al.Basic features and evaluation of shale gas reservoirs[J].Natural Gas Industry,2010,30(10):7-12.[蒋裕强,董大忠,漆麟,等.页岩气储层的基本特征及其评价[J].天然气工业,2010,30(10):7-12.]
[2]Fu Yongqiang,Ma Faming,Zeng Lixin,et al.Key techniques of experimental evaluation in the fracturing treatment for shale gas reservoirs[J].Natural Gas Industry,2011,31(4):51-54.[付永强,马发明,曾立新,等.页岩气藏储层压裂实验评价关键技术[J].天然气工业,2011,31(4):51-54.]
[3]Li Qinghui,Chen Mian,Fred P W,et al.Influence of engineering factors on shale gas productivity:A case study from the Haynesville shale gas reservoir in North America[J].Natural Gas Industry,2012,32(4):54-59.[李庆辉,陈勉,Fred P W,等.工程因素对页岩气产量的影响——以北美Haynesville 页岩气藏为例[J].天然气工业,2012,32(4):54-59.]
[4]Bowker K A.Barnett Shale gas production,Fort Worth Basin:Issues and discussion[J].AAPG Bulletin,2007,91(4):523-533.[JP]
[5]Ding Wenlong,Li Chaoliu,Li Chunyan,et al.Dominant factor of fracture development in shale and its relationship to gas accumulation[J].Earth  Science  Frontiers,2012,19(2):212-220.[丁文龙,李潮流,李春燕,等.页岩裂缝发育主控因素及其对含气性的影响[J].地学前缘,2012,19(2):212-220.]
[6]Zou Caineng,Yang Zhi,Zhang Guosheng,et al.Conventional and unconventional petroleum “orderly accumulation”:Concept and practical significance[J].Petroleum  Exploration  and  Development,2014,41(1):14-27.[邹才能,杨智,张国生,等.常规—非常规油气“有序聚集”理论认识及实践意义[J].石油勘探与开发,2014,41(1):14-27.]
[7]Qiu Xiaosong,Yang Bo,Hu Mingyi.Characteristics of shale reservoirs and gas content of Wufeng-Longmaxi Formation in the Middle Yangtze Region[J].Natural Gas Geoscience,2013,24(6):1274-1283.[邱小松,杨波,胡明毅.中扬子地区五峰组-龙马溪组页岩气储层及含气性特征[J].天然气地球科学,2013,24(6):1274-1283.]
[8]Wang Yuman,Dong  Dazhong,Yang  Hua,et al.Quantitative characterization of reservoir space in Lower Silurian Longmaxi shale in Southern Sichuan[J].Scientia Sinica Terrae,2014,44(6):1348-1356.[王玉满,董大忠,杨桦,等.川南下志留统龙马溪组页岩储集空间定量表征[J].中国科学:地球科学,2014,44(6):1348-1356.]
[9]Zhang Xiaoming,Shi Wanzhong,Xu Qinghai,et al.Reservoir characteristics and controlling factors of shale gas in Jiaoshiba area,Sichuan Basin[J].Acta Petrolei Sinica,2015,36(8):926-939,953.[张晓明,石万忠,徐清海,等.四川盆地焦石坝地区页岩气储层特征及控制因素[J].石油学报,2015,36(8):926-939,953.][JP]
[10]Wang Tong,Yang Keming,Xiong Liang,et al.Shale sequence stratigraphy of Wufeng-Longmaxi Formation in southern Sichuan and their control on reservoirs[J].Acta Petrolei Sinica,2015,36(8):915-925.[王同,杨克明,熊亮,等.川南地区五峰组—龙马溪组页岩层序地层及其对储层的控制[J].石油学报,2015,36(8):915-925.]
[11]Jarvie D M,Hill R J,Ruble T E,et al.Unconventional shale-gas systems:The Mississippian Barnett Shale of north-central Texas as one model for thermogenic shale-gas assessment[J].AAPG Bulletin,2007,91(4):475-499.
[12]Rickman R,Mullen M J,Petre J E,et al.A practical use of shale petrophysics for stimulation design optimization:All shale plays are not clones of the Barnett Shale[C]//SPE Annual Technical Conference and Exhibition.Society of Petroleum Engineers,2008.
[13]Wang Yuman,Wang Shufang,Dong Dazhong,et al.Lithofacies characterization of Longmaxi Formation of the Lower Silurian,Southern Sichuan[J].Earth Science Frontiers,2016,23(1):119-133.[王玉满,王淑芳,董大忠,等.川南下志留统龙马溪组页岩岩相表征[J].地学前缘,2016,23(1):119-133.]
[14]Matthews H L,Schein G,Malone M.Stimulation of gas shales:they’re all the same? Right[C]// SPE Hydraulic Fracturing Technology Conference.Society of Petroleum Engineers,2007.[JP]
[15]Nelson R A.Geologic analysis of naturally fractured reservoirs(second edition)[J].Geologic Analysis of Naturally Fractured Reservoirs,2001(4):323-332.
[16]Mavko G.Rock Physics of Shale[M].Hefei:University of Science and Technology of China Press,2008:260-263.[马沃可.岩石物理手册[M].合肥:中国科学技术大学出版社,2008:260-263.]
[17]Wang Shufang,Zou Caineng,Dong Dazhong,et al.Biogenic silica of organic-rich shale in Sichuan Basin and its significance for shale gas[J].Acta  Scientiarum  Naturalium  Universitatis  Pekinensis,2014,50(3):476-486.[王淑芳,邹才能,董大忠,等.四川盆地富有机质页岩硅质生物成因及对页岩气开发的意义[J].北京大学学报:自然科学版,2014,50(3):476-486.]
[18]Wang Qingchen,Yan  Detian,Li Shuangjian.Tectonic-environmental model of the Lower Silurian high-hydrocarbon source rocks from South China[J].Acta Geologica Sinica,2008,82(3):289-297.[王清晨,严德天,李双建.中国南方志留系底部优质烃源岩发育的构造—环境模式[J].地质学报,2008,82(3):289-297.]
[19]Wang Yuman,Dong Dazhong,Li Xinjing,et al.Stratigraphic sequence and sedimentary characteristics of Lower Silurian Longmaxi Formation in the Sichuan Basin and its peripheral areas[J].Natural Gas Industry,2015,35(3):12-21.[王玉满,董大忠,李新景,等.四川盆地及周边下志留统龙马溪组地层层序与沉积特征[J].天然气工业,2015,35(3):12-21.]
[20]Wang Yuman,Huang Jinliang,Wang Shufang,et al.Dissection of two calibrated areas of the Silurian Longmaxi Formation,Changning and Jiaoshiba,Sichuan Basin[J].Natural Gas Geoscience,2016,27(3):423-432.[王玉满,黄金亮,王淑芳,等.四川盆地长宁、焦石坝志留系龙马溪组页岩气刻度区精细解剖[J].天然气地球科学,2016,27(3):423-432.]
[21]Macquaker J H S,Keller M A.Mudstone sedimentation at high latitudes:Ice as a transport medium for mud and supplier of nutrients[J].Journal of Sedimentary Research,2005,75(4):696-709.

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