孙乐;王志章;于兴河;潘潞;张国印;

• 1:中国地质大学(北京)能源学院

• 2:中国石油大学(北京)地球科学学院

• 3:中国石化上海海洋油气分公司勘探开发研究院

摘要(Abstract)：

二叠系下统风城组为准噶尔盆地玛湖西斜坡致密油主力产层。基于CT成像的三维高精度储层表征、扫描电镜和压汞测试等方法,分析风城组致密油储层微观孔隙结构。选取并制备直径为65μm的CT实验样品进行纳米尺度扫描,构建纳米级孔隙三维结构模型,分析不同深度样品物性特征,以及孔喉大小、形态、空间分布和连通性。结果表明:在微米尺度下,实验样品孔喉大小差异大,半径为2~50μm,呈孤立状或条带状分布于粒间或粒内,数量少但占孔隙体积大;在纳米尺度下,样品孔喉半径为0.05~0.30μm,纳米级孔隙数量增多,呈管状或球状分布于矿物颗粒(晶体)内部或表面,纳米级球状微孔连通性较差,三维空间呈孤立状,多作为储集空间;计算样品孔隙度与岩心分析孔隙度结果接近。该研究结果可为研究区致密油储层进一步勘探提供指导。

关键词(KeyWords)：CT三维成像;致密油储层;微观孔隙结构;玛湖西斜坡;准噶尔盆地

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2011ZX05008-004)

作者(Author):孙乐;王志章;于兴河;潘潞;张国印;

Email:

参考文献(References)：

• [1]尤源,牛小兵,辛红刚,等.国外致密油储层微观孔隙结构研究及其对鄂尔多斯盆地的启示[J].技术创新,2013,1(3):13-18.You Yuan,Niu Xiaobing,Xin Honggang,et al.The foreign study of microcosmic pore structure of tight oil reservoirs and its implications for the Ordos basin[J].Petroleum Technology Forum,2013,1(3):13-18.

• [2]邹才能,张亚光,陶士振,等.全球油气勘探领域地质特征、重大发现及非常规石油地质[J].石油勘探与开发,2010,37(2):129-145.Zou Caineng,Zhang Yaguang,Tao Shizhen,et al.Geological features,major discoveries and unconventional petroleum geology in the global petroleum exploration[J].Petroleum Exploration and Development,2010,37(2):129-145.

• [3]邹才能,朱如凯,吴松涛,等.常规与非常规油气聚集类型、特征、机理及展望:以中国致密油和致密气为例[J].石油学报,2012,33(2):173-187.Zou Caineng,Zhu Rukai,Wu Songtao,et al.Types,characteristics,genesis and prospects of conventional and unconventional hydrocarbon accumulations:Taking tight oil and tight gas in China as an instance[J].Acta Petrolei Sinica,2012,33(2):173-187.

• [4]吴浩,郭英海,张春林,等.致密油储层微观孔吼结构特征及分类——以鄂尔多斯盆地陇东地区三叠统延长组长7段为例[J].东北石油大学学报,2013,37(6):12-17.Wu Hao,Guo Yinghai,Zhang Chunlin,et al.Characteristics and classifications of micro-pore structure in tight oil reservoir:A case study of the Triassic Yanchang formation Chang7in Longdong area,Ordos basin[J].Journal of Northeast Petroleum University,2013,37(6):12-17.

• [5]朱如凯,白斌,崔景伟,等.非常规油气致密储集层微观结构研究进展[J].古地理学报,2013,15(5):615-623.Zhu Rukai,Bai Bin,Cui Jingwei,et al.Research advances of microstructure in unconventional tight oil and gas reservoirs[J].Journal of Palaeography,2012,15(5):615-623.

• [6]邹才能,杨智,陶士振,等.纳米油气与源储共生型油气聚集[J].石油勘探与开发,2012,39(1):13-20.Zou Caineng,Yang Zhi,Tao Shizhen,et al.Nano-hydrocarbon and the accumulation in coexisting source and reservoir[J].Petroleum Exploration and Development,2012,39(1):13-20.

• [7]邹才能,朱如凯,白斌,等.中国油气储层中纳米孔首次发现及其科学价值[J].岩石学报,2011,27(6):1858-1863.Zou Caineng,Zhu Rukai,Bai Bin,et al.First discovery of nano-pore throat in oil and gas reservoir in China and its scientific value[J].Acta Petrologica Sinica,2012,27(6):1857-1864.

• [8]李海燕,徐樟有.新立油田低渗透储层微观孔隙结构特征及分类评价[J].油气地质与采收率,2009,16(1):17-23.Li Haiyan,Xu Zhangyou.Microscopic characteristics of pore structure and classification evaluation of low permeability reservoir in Xinli oilfield[J].Petroleum Geology and Recovery Efficiency,2009,16(1):17-23.

• [9]李海燕,岳大力,张秀娟.苏里格气田低渗透储层微观孔隙结构特征及其分类评价方法[J].地学前缘,2012,19(2):133-139.Li Haiyan,Yue Dali,Zhang Xiujuan.Characteristics of pore structure and reservoir evaluation of low permeability reservoir in Sulige gas field[J].Earth Science Frontiers,2012,19(2):133-139.

• [10]何涛,王芳,汪伶俐.致密砂岩储层微观孔隙结构特征——以鄂尔多斯盆地延长组长7储层为例[J].岩性油气藏,2013,25(4):24-28.He Tao,Wang Fang,Wang Lingli.Characteristics of micro-pore structure of tight sandstone reservoir:A case study from Chang7reservoir of Yanchang formation in Ordos basin[J].Lithologic Reservoirs,2013,25(4):24-28.

• [11]唐海发,彭仕宓,赵彦超,等.大牛地气田盒2+3段致密砂岩储层微观孔隙结构特征及其分类评价[J].矿物岩石,2006,26(3):107-113.Tang Haifa,Peng Shimi,Zhao Yanchao,et al.Characterstics of pore structure and reservoir ecaluation in H2+3tight gas reservoir,Daniudi gas field[J].Jmineral Petrol,2006,26(3):107-113.

• [12]郝乐伟,王琪,唐俊.储层岩石微观孔隙结构研究方法与理论综述[J].岩性油气藏,2013,25(5):124-128.Hao Lewei,Wang Qi,Tang Jun.Research progress of reservoir microscopic pore structure[J].Lithologic Reservoirs,2013,25(5):124-128.

• [13]邹春艳,罗蓉,李子荣,等.电镜扫描在碎屑岩储层粘土矿物研究中的应用[J].天然气勘探与开发,2005,28(4):4-7.Zou Chunyan,Luo Rong,Li Zirong,et al.Application of SEM on clay mineral study for clastic reservoirs[J].Natural Gas Exoloration and Development,2005,28(4):4-7.

• [14]刘伟新,史志华,朱樱.扫描电镜/能谱分析在油气勘探开发中的应用[J].石油实验地质,2001,23(3):341-343.Liu Weixin,Shi Zhihua,Zhu Ying.Application of SEM/EDX analysis in petroleum exploration and production[J].Petroleum Geology&Experiment,2001,23(3):341-343.

• [15]于丽芳,杨志军,周永章,等.扫描电镜和环境扫描电镜在地学领域的应用综述[J].中山大学研究生学刊,2008,29(1):54-57.Yu Lifang,Yang Zhijun,Zhou Yongzhang,et al.The Application summary of scanning electron microscope(SEM)and environment scanning electron microscope(ESEM)in geoscience[J].Journal of The Graduates Sun YAT-SEN University,2008,29(1):54-57.

• [16]王晓莲.徐家围子断陷沙河子组致密储层分级评价[J].特种油气藏,2016,23(3):113-117.Wang Xiaolian.Classification evaluation of tight reservoir in Shahezi formation of Xujiaweizi fault-depression[J].Special Oil and Gas Reservoir,2016,23(3):113-117.

• [17]吴元燕,吴胜和,蔡正旗.油矿地质学[M].3版.北京:石油工业出版社,2005.Wu Yuanyan,Wu Shenghe,Cai Zhengqi.Oilfield geology[M].The 3rd Edition.Beijing:Petroleum Industry Press,2005.

• [18]徐祖新,郭少斌.基于氩离子抛光-SEM和ImageJ软件的页岩储层孔隙结构分析[J].东北石油大学学报,2014,38(4):45-51.Xu Zuxin,Guo Shaobin.Analysis of the pore structure of shale gas reservoir based on argonion milling SEM and image[J].Journal of Northeast Petroleum University,2014,38(4):45-51.

• [19]汪少勇,李建忠,王社教,等.辽河坳陷雷家地区沙四段致密储层孔隙结构及物性下限[J].东北石油大学学报,2016,40(1):51-61.Wang Shaoyong,Li Jianzhong,Wang Shejiao,et al.Pore-structure and physical property cut-off of tight reservoirs in the fourth shahejie formation,Leijia district,Liaohe depression[J].Journal of Northeast Petroleum University,2016,40(1):51-61.

• [20]Lame O,Bellet D,Di Michiel M,et al.Bulk observation of metal powder sintering by X-ray synchrotron microtomography[J].Acta Materialia,2004,52(4):977-984.

• [21]Sakdinawat A,Attwood D.Nanoscale X-ray imaging[J].Nature Photonics,2010,267(4):840-848.

• [22]Gelb J,Gu A,Fong T,et al.A closer look at shale:Representative elementary volume analysis with laboratory 3DX-ray computed microtomography and nanotomography[R].SCA2011-58,2011.

• [23]郭璇,潘建国,谭开俊,等.地震沉积学在准噶尔盆地玛湖西斜坡区三叠系百口泉组的应用[J].天然气地球科学,2012,23(2):359-364.Guo Xuan,Pan Jianguo,Tan Kaijun,et al.Application of seismic sedimentology in Triassic Baikouquan formation of western Mahu slope of Junggar basic[J].Natural Gas Geosciences,2012,23(2):359-364.

• [24]潘晓添,郑荣才,文华国,等.准噶尔盆地乌尔禾地区风城组云质致密油储层特征[J].成都理工大学学报:自然科学版,2013,40(3):315-325.Pan Xiaotian,Zheng Rongcai,Wen Huaguo,et al.Tight oil reservoir of Permian Fengcheng formation in Urho area,Junggar basin,China[J].Journal of Chengdu University of Technology:Science&Technology Edition,2013,40(3):315-325.

• [25]佘敏,寿建峰,郑兴平,等.基于CT成像的三维高精度储集层表征技术及应用[J].新疆石油地质,2011,32(6):664-667.She Min,Shou Jianfeng,Zheng Xingping,et al.3Dhigh resolution reservoir characterization technique based on CT imaging and application[J].Xinjiang Petroleum Geology,2011,32(6):664-667.

• [26]Arns C H,Bauget F,Limaye A,et al.Pore scale characterization of carbonates using X-ray microtomography[J].SPE Journal,2005:SPE-90368-PA.

• [27]白斌,朱如凯,吴松涛.利用多尺度CT成像表征致密砂岩微观孔喉结构[J].石油勘探与开发,2013,40(3):329-333.Bai Bin,Zhu Rukai,Wu Songtao.Multi-scale method of Nano(Micro)-CT study on microscopic pore structure of tight sandstone of Yanchang formation,Ordos basin[J].Petroleum Exploration and Development,2013,40(3):329-333.

• [28]苏娜,段永刚,于春生.微CT扫描重建低渗气藏微观孔隙结构——以新场气田上沙溪庙组储层为例[J].石油与天然气地质,2011,32(54):792-796.Su Na,Duan Yonggang,Yu Chunsheng.Reconstruction of microscopic pore structure in low permeability gas reservoirs by micro-CT scanning:An example from the upper Shaximiao formation in Xinchang gas field[J].Oil&Gas Geology,2011,32(54):792-796.