Characterization of Microscopic Pore Structures in Shale Reservoirs of Toolebuc Formation in the E Basin,Australia

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  • 1.CNOOC EnerTech-Drilling & Production Co.,Tianjin 300457,China;
    2.Research & Development Center of CNOOC Gas and Power Group,Beijing 100027,China;
    3.State Key Laboratory of Petroleum Resource and Prospecting,China University of Petroleum,Beijing 102249,China

Received date: 2014-04-23

  Revised date: 2014-10-15

  Online published: 2015-05-10

Abstract

In order to investigate the nanostructure morphology of shale reservoirs of the Toolebuc Formation,organic geochemical and X-ray diffraction experiments are used to measure the mineral composition and argon ion polishing-SEM,liquid nitrogen adsorption and high pressure mercury experiments are used to analyze the pore types and structures of Toolebuc shale.Result shows that shale of Toolebuc Formation is high abundance marine shale,the content of brittle minerals is 55%,and can be fractured.The average porosity of shale is 15%,while the permeability ranges from 0.002×10-3μm2 to 0.116×10-3μm2.Research shows that pores of shale can be classified into six types: Inter-particle pores between clay minerals,mineral pores in rock skeletons,pores in organic,apertures in paleontology fossils,organic acid solution pores and micro-fractures,of which the most common ones are inter-particle pores between clay minerals and mineral pores in rock skeletons.The pores size distribution of shale is complex,which includes not only predominant mode-pores,but also a certain amount of macro-pores and micro-pores.Macro-pores and mode-pores provide most of pore volume,it is good for the accumulation of free gas,and mode-pores and micro-pores provide most of specific surface area,and it is good for the preservation of absorbed gas.The types and distribution of pores in shale are obviously controlled by the diagenetic evolution and thermal evolution.

Cite this article

GE Yan,XIE Ying-gang,HU Yun-ting,LI Le-zhong,GUO Xiao-bo,SHI Xue-feng,GU Feng . Characterization of Microscopic Pore Structures in Shale Reservoirs of Toolebuc Formation in the E Basin,Australia[J]. Natural Gas Geoscience, 2015 , 26(5) : 979 -985 . DOI: 10.11764/j.issn.1672-1926.2015.05.0979

References

[1]Curbs J B.Fractured shale-gas systems[J].AAPG Bulletin,2002,86(11):1921-1938.
[2]Jiang Huaiyou,Song Xinmin,An Xiaoxuan,et al.Global shale gas resources and its E & P technologies[J].Natural Gas Technology,2008,2(6):26-30.[江怀友,宋新民,安晓璇,等.世界页岩气资源与勘探开发技术综述[J].天然气技术,2008,2(6):26-30.]
[3]Zhao Jingzhou.Conception,classification and resource potential of unconventional hydrocar-bons [J].Natural Gas Geoscience,2012,23(3):394-403.[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):394-403.]
[4]Dong Dazhong,Zou Caineng,Li Jianzhong,et al.Resource potential,exploration and development prospect of shale gas in the whole world[J].Geological Bulletin of China,2011,30(2):324-336.[董大忠,邹才能,李建忠,等.页岩气资源潜力与勘探开发前景[J].地质通报,2011,30(2):324-336.]
[5]Wake-Dyster K D,Moss F J,Sexton M J.New seismic reflection results in the central Eromanga Basin,Queensland,Australia:The key to understanding its tectonic evolution[J].Tectonophysics,1983,100(3):147-162.
[6]Boult P J.Membrane seal and tertiary migration pathways in the Bodalla South Oilfield,Eromanga Basin,Australia[J].Marine and Petroleum Geology,1993,10(1):3-13.
[7]Ellis G.Hydrocarbon entrapment in Triassic to Late Jurassic reservoirs in the Timor Sea,Australia:New insights[J].APPEA Journal,2007,47(1):39-53.
[8]Yang Feng,Ning Zhengfu,Hu Changpeng,et al.Characterization of microscopic pore structures in shale reservoirs[J].Acta Petrolei Sinica,2013,34(2):301-311.[杨峰,宁正福,胡昌蓬,等.页岩储层微观孔隙结构特征[J].石油学报,2013,34(2):301-311.]
[9]Wang Jie,Qin Jianzhong,Rao Dan,et al.Microstructure and simulation experiments of extracted gas capability in different types of shale[J].Natural Gas Geoscience,2013,24(4):652-658.[王杰,秦建中,饶丹,等.不同类型页岩富集烃类气能力模拟实验及微观结构特征研究[J].天然气地球科学,2013,24(4):652-658.]
[10]Yang Feng,Ning Zhengfu,Wang Qing,et al.Fractal characteristics of nanopore in shales[J].Natural Gas Geoscience,2014,25(4):618-623.[杨峰,宁正福,王庆,等.页岩纳米孔隙分形特征[J].天然气地球科学,2014,25(4):618-623.]
[11]Xiong Wei,Guo Wei,Liu Honglin,et al.Shale reservoir characteristics and isothermal adsorption properties[J].Natural Gas Industry,2012,32(1):113-116.[熊伟,郭为,刘洪林,等.页岩的储层特征以及等温吸附特征[J].天然气工业,2012,32(1):113-116.]
[12]Qiu Xiaosong,Yang Bo,Hu Mingyi.Characteristics of shale reserviors 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.]
[13]Nie Haikuan,Zhang Jinchuan.Types and characteristics of shale gas reservoir:A case study of Lower Paleozoic in and around Sichuan Basin[J].Petroleum Geology & Experiment,2011,33(3):219-225.[聂海宽,张金川.页岩气储层类型和特征研究——以四川盆地及其周缘下古生界为例[J].石油实验地质,2011,33(3):219-225.]
[14]Wu Lingang,Li Xiusheng,Guo Xiaobo,et al.Diagenetic evolution and formation mechanism of dissolved pore of shale oil reservoirs of Lucaogou Formation in Malang Sag[J].Journal of China University of Petroleum:Edition of Natural Science,2012,36(3):38-43.[吴林钢,李秀生,郭小波,等.马朗凹陷芦草沟组页岩油储层成岩演化与溶蚀孔隙形成机制[J].中国石油大学学报:自然科学版,2012,36(3):38-43.]
[15]Huang Zhenkai,Chen Jianping,Xue Haitao,et al.Microstructural characteristics of the Cretaceous Qingshankou Formation shale,Songliao Basin[J].Petroleum Exploration and Development,2013,40(1):58-65.[黄振凯,陈建平,薛海涛,等.松辽盆地白垩系青山口组泥页岩孔隙结构特征[J].石油勘探与开发,2013,40(1):58-65.]
[16]Meng Yuanlin,Zhao Zitong,Jiao Jinhe,et al.Geochemical characteristics of the shale hydrocarbon in Gonghe Basin[J].Journal of China University of Petroleum:Edition of Natural Science,2012,36(5):32-37.[孟元林,赵紫桐,焦金鹤,等.共和盆地页岩油气地球化学特征[J].中国石油大学学报:自然科学版,2012,36(5):32-37.]

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