鄂尔多斯盆地延安地区山西组泥页岩孔隙表征

王子龙; 郭少斌

doi:10.11781/sysydz201901099

鄂尔多斯盆地延安地区山西组泥页岩孔隙表征

doi: 10.11781/sysydz201901099

王子龙,
郭少斌^,

中国地质大学(北京) 能源学院, 北京 100083

基金项目:

国家科技重大专项“不同类型页岩气生成机理与富集规律研究”（2016ZX05034-001）资助。

详细信息

作者简介:
王子龙(1996-),男,硕士研究生,矿产普查与勘探专业。E-mail:1027034030@qq.com。

通讯作者:
郭少斌(1962-),男,教授,博士生导师,从事层序地层学、储层评价和油气资源评价方面的教学和科研工作。E-mail:guosb58@126.com。

中图分类号: TE132.2
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出版历程
- 收稿日期: 2018-09-20
- 修回日期: 2018-12-12
- 刊出日期: 2019-01-28

Pore characterization of shale in Shanxi Formation, Yan'an area, Ordos Basin

WANG Zilong,
GUO Shaobin^,

School of Energy, China University of Geosciences, Beijing 100083, China

摘要

摘要: 以鄂尔多斯盆地延安地区上古生界二叠系山西组泥页岩储层为研究对象，通过核磁共振、扫描电镜、高压压汞、氮气吸附以及二氧化碳吸附等实验，对泥页岩储层进行了详细的全孔隙表征。研究区山西组主要发育粒间孔、粒内孔、裂缝及有机质孔四类孔隙类型，以粒内孔和有机质孔居多。核磁共振T₂谱曲线多以单峰分布，离心后曲线几乎无变化，说明样品中含有较多的纳米级孔隙，并且连通性较差。高压压汞、氮气吸附、二氧化碳吸附实验表明，孔隙体积以中孔和宏孔为主，二者占孔总体积的85%左右，微孔仅占总孔体积的15%；而比表面积主要由微孔和中孔提供，微孔占总比表面积的51.94%，中孔占47.98%，二者占总比表面积的99%以上，宏孔可以忽略不计；样品孔隙形态以两端开孔或狭缝型的平行板孔为主。
- 孔隙表征 /
- 泥页岩 /
- 山西组 /
- 延安地区 /
- 鄂尔多斯盆地
Abstract: The shale reservoirs in the Upper Paleozoic Shanxi Formation in the Yan'an area of the Ordos Basin were studied. The whole porosity of the shale was characterized in detail using NMR, SEM, high pressure mercury intrusion, nitrogen adsorption and carbon dioxide adsorption. The Shanxi Formation in the Yan'an area mainly developed four types of porosity, i.e. fractures, intergranular, intragranular pores, and organic pores, with intragranular and organic pores in the majority. The T₂ NMR curves are mostly single-peaked and almost unchanged after centrifugation, indicating that the samples are dominated by nano pores with poor connectivity. High pressure mercury intrusion, nitrogen adsorption and carbon dioxide adsorption experiments showed that the pore volume is mainly meso pores and macro pores, accounting for about 85% of the total pore volume, while micro pores only account for 15% of the total pore volume. The specific surface area is mainly provided by micro pores and meso pores, with micro pores accounting for 52% of the total specific surface area, followed by meso pores accounting for 48%. Macro pores can be neglected when the surface area is more than 99%. The pore morphology of the samples is mainly parallel plate pores with openings or slits at both ends.
- pore characterization /
- shale /
- Shanxi Formation /
- Yan'an area /
- Ordos Basin

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参考文献(22)

[1]	郭慧娟.鄂尔多斯盆地东南部延长组页岩的孔隙结构与热演化特征[D].广州:中国科学院广州地球化学研究所,2017. GUO Huijuan.Pore structure and thermal evolution of Yanchang shales from southeastern Ordos Basin[D].Guangzhou:Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,2017.
[2]	赵可英,郭少斌.海陆过渡相页岩气储层孔隙特征及主控因素分析:以鄂尔多斯盆地上古生界为例[J].石油实验地质,2015,37(2):141-149. ZHAO Keying,GUO Shaobin.Characteristics and main controlling factors of shale gas reservoirs in transitional facies:a case study of Upper Paleozoic in Ordos Basin[J].Petroleum Geology & Experiment,2015,37(2):141-149.
[3]	赵华伟,宁正福,赵天逸,等.恒速压汞法在致密储层孔隙结构表征中的适用性[J].断块油气田,2017,24(3):413-416. ZHAO Huawei,NING Zhengfu,ZHAO Tianyi,et al.Applicability of rate-controlled porosimetry experiment to pore structure characterization of tight oil reservoirs[J].Fault-Block Oil and Gas Field,2017,24(3):413-416.
[4]	卢晨刚,张遂安,毛潇潇,等.致密砂岩微观孔隙非均质性定量表征及储层意义:以鄂尔多斯盆地X地区山西组为例[J].石油实验地质,2017,39(4):556-561. LU Chengang,ZHANG Suian,MAO Xiaoxiao,et al.Quantitative characterization of microscopic pore heterogeneity in tight sandstones and its reservoir significance:A case study of the Shanxi Formation in X area,Ordos Basin[J].Petroleum Geology & Experiment,2017,39(4):556-561.
[5]	王凤娇,刘义坤,于苏浩.苏里格气田东区致密砂岩储层特征[J].油气地质与采收率,2017,24(6):43-47. WANG Fengjiao,LIU Yikun,YU Suhao.Reservoir characteristics of tight sandstone in the eastern Sulige Gas Field[J].Petroleum Geology and Recovery Efficiency,2017,24(6):43-47.
[6]	葛云锦,马芳侠.富县地区长8致密储层微观结构及致密化[J].断块油气田,2018,25(3):300-304. GE Yunjin,MA Fangxia.Discussion of microstructure and densification process of Chang 8 tight reservoirin Fuxian area[J].Fault-Block Oil and Gas Field,2018,25(3):300-304.
[7]	赵振宇,郭彦如,王艳,等.鄂尔多斯盆地构造演化及古地理特征研究进展[J].特种油气藏,2012,19(5):15-20. ZHAO Zhenyu,GUO Yanru,WANG Yan,et al.Study progress in tectonic evolution and paleogeography of Ordos Basin[J].Special Oil and Gas Reservoirs,2012,19(5):15-20.
[8]	刘洪林.中国南方海相页岩吸附特征及成藏作用研究[C]//2016中国地球科学联合学术年会论文集(三十四).北京:中国地球物理学会,2016. LIU Honglin.Adsorption characteristics and accumulation of marine shales in southern China[C].Papers of the 2016 Annual Meeting of the Joint Academic Conference of Geosciences of China(34).Beijing:China Geophysical Society,2016.
[9]	李钜源.渤海湾盆地东营凹陷古近系泥页岩孔隙特征及孔隙度演化规律[J].石油实验地质,2015,37(5):566-574. LI Juyuan.Pore characteristics and their evolution in Paleogene mud shales,Dongying Sag,Bohai Bay Basin[J].Petroleum Geology & Experiment,2015,37(5):566-574.
[10]	张鹏飞,卢双舫,李俊乾,等.基于扫描电镜的页岩微观孔隙结构定量表征[J].中国石油大学学报(自然科学版),2018,42(2):19-28. ZHANG Pengfei,LU Shuangfang,LI Junqian,et al.Quantitative characterization of microscopic pore structure for shales using scanning electron microscopy[J].Journal of China University of Petroleum(Edition of Natural Science),2018,42(2):19-28.
[11]	王香增,张丽霞,李宗田,等.鄂尔多斯盆地延长组陆相页岩孔隙类型划分方案及其油气地质意义[J].石油与天然气地质,2016,37(1):1-7. WANG Xiangzeng,ZHANG Lixia,LI Zongtian,et al.Pore type classification scheme for continental Yanchang shale in Ordos Basin and its geological significance[J].Oil & Gas Geology,2016,37(1):1-7.
[12]	杨侃,陆现彩,徐金覃,等.气体吸附等温线法表征页岩孔隙结构的模型适用性初探[J].煤炭学报,2013,38(5):817-821. YANG Kan,LU Xiancai,XU Jintan,et al.Preliminary verification of common calculation methods of pore size distribution of shale based on gas adsorption isotherm[J].Journal of China Coal Society,2013,38(5):817-821.
[13]	蒲泊伶,董大忠,耳闯,等.川南地区龙马溪组页岩有利储层发育特征及其影响因素[J].天然气工业,2013,33(12):41-47. PU Boling,DONG Dazhong,ER Chuang,et al.Favorable reservoir characteristics of the Longmaxi shale in the southern Sichuan Basin and their influencing factors[J].Natural Gas Industry,2013,33(12):41-47.
[14]	徐祖新,郭少斌.基于NMR和X-CT的页岩储层孔隙结构研究[J].地球科学进展,2014,29(5):624-631. XU Zuxin,GUO Shaobin.Application of NMR and X-CT technology in the pore structure study of shale gas reservoirs[J].Advances in Earth Science,2014,29(5):624-631.
[15]	侯宇光,何生,易积正,等.页岩孔隙结构对甲烷吸附能力的影响[J].石油勘探与开发,2014,41(2):248-256. HOU Yuguang,HE Sheng,YI Jizheng,et al.Effect of pore structure on methane sorption capacity of shales[J].Petroleum Exploration and Development,2014,41(2):248-256.
[16]	DRUMMOND C,ISRAELACHVILI J.Surface forces and wettability[J].Journal of Petroleum Science and Engineering,2002,33(1/3):123-133.
[17]	张烈辉,郭晶晶,唐洪明,等.四川盆地南部下志留统龙马溪组页岩孔隙结构特征[J].天然气工业,2015,35(3):22-29. ZHANG Liehui,GUO Jingjing,TANG Hongming,et al.Pore structure characteristics of Longmaxi shale in the southern Sichuan Basin[J].Natural Gas Industry,2015,35(3):22-29.
[18]	孙寅森,郭少斌.湘鄂西地区上震旦统陡山沱组页岩微观孔隙特征及主控因素[J].地球科学与环境学报,2017,39(1):114-125. SUN Yinsen,GUO Shaobin.Characteristics of microscopic pores of shale from Upper Sinian Doushantuo Formation in the western of Hunan and Hubei,China and the main controlling factors[J].Journal of Earth Sciences and Environment,2017,39(1):114-125.
[19]	THOMMES M,SMARSLY B,GROENEWOLT M,et al.Adsorption hysteresis of nitrogen and argon in pore networks and characterization of novel micro-and mesoporous silicas[J].Langmuir,2006,22(2):756-764.
[20]	路长春,陆现彩,刘显东,等.基于探针气体吸附等温线的矿物岩石表征技术Ⅳ:比表面积的测定和应用[J].矿物岩石地球化学通报,2008,27(1):28-34. LU Changchun,LU Xiancai,LIU Xiandong,et al.The technique of surface characteristics of mineral material based on probe gas adsorption isotherm IV:measurement and application of specific surface area[J].Bulletin of Mineralogy,Petrology and Geoche-mistry,2008,27(1):28-34.
[21]	张吉振,李贤庆,郭曼,等.川南地区二叠系龙潭组页岩微观孔隙特征及其影响因素[J].天然气地球科学,2015,26(8):1571-1578. ZHANG Jizhen,LI Xianqing,GUO Man,et al.Microscopic pore characteristics and its influence factors of the Permian Longtan Formation shales in the southern Sichuan Basin[J].Natural Gas Geoscience,2015,26(8):1571-1578.
[22]	姜振学,唐相路,李卓,等.川东南地区龙马溪组页岩孔隙结构全孔径表征及其对含气性的控制[J].地学前缘,2016,23(2):126-134. JIANG Zhenxue,TANG Xianglu,LI Zhuo,et al.The whole-aperture pore structure characteristics and its effect on gas content of the Longmaxi Formation shale in the southeastern Sichuan Basin[J].Earth Science Frontiers,2016,23(2):126-134.