页岩气储层孔隙特征差异及其对含气量影响

吴艳艳; 曹海虹; 丁安徐; 王亮; 陈云燕

doi:10.11781/sysydz201502231

页岩气储层孔隙特征差异及其对含气量影响

doi: 10.11781/sysydz201502231

中国石化华东分公司石油勘探开发研究院实验中心, 江苏扬州 225000

基金项目: 中国石化科技项目(P12014)资助。

详细信息

作者简介:
吴艳艳(1982—),女,工程师,从事非常规天然气地质实验研究。E-mail:wuyanyan26@126.com。

中图分类号: TE132.2
计量
- 文章访问数: 1322
- HTML全文浏览量: 111
- PDF下载量: 995
- 被引次数: 0
出版历程
- 收稿日期: 2014-06-10
- 修回日期: 2015-01-13
- 刊出日期: 2015-03-28

Pore characteristics of a shale gas reservoir and its effect on gas content

Experiment Center, Petroleum Exploration and Development Institute, SINOPEC East China Company, Yangzhou, Jiangsu 225000, China

摘要

摘要: 运用氩离子抛光+扫描电镜和氮气吸附法对渝东南地区龙马溪组的24个页岩样品和川东南地区须家河组10个页岩样品孔隙进行测试,探讨页岩的孔隙特征差异及其对含气量的影响。研究发现,其孔隙类型主要包括有机质孔、矿物粒间孔、溶蚀孔、晶间孔、矿物层间解理缝和微裂缝等;孔隙形态多为不规则,多呈开放状态;孔隙结构较复杂,纳米级有机质孔丰富,主孔位于2~10 nm。须家河组页岩样品以无机中大孔和微裂隙为主。有机质孔发育差异原因可能是由页岩的有机质类型本身化学分子性质差异造成,也可能是具有催化生气作用的无机矿物或元素与有机质赋存关系差异造成。数理统计结果显示,孔隙类型并不是含气量大小的主控因素,TOC是页岩气藏最本质因素。须家河组页岩中孔隙结构主要受无机矿物影响;龙马溪组页岩样品的TOC是比表面积和孔径为2~10 nm孔发育的本质因素,提供页岩气主要的储存空间。伊利石是孔径为2~10 nm孔发育的重要影响因素,也是提供页岩气存储空间的重要物质。
- 孔隙特征 /
- 有机质孔 /
- 含气量 /
- 页岩气 /
- 川东南地区 /
- 渝东南地区
Abstract: The porosity tests of 24 Longmaxi Formation shale samples fromthe southeastern Chongqing area and 10 Xujiahe Formation shale samples fromthe southeastern Sichuan area were carried out with argon ion milling+ scanning electron microscopy (SEM) and nitrogen adsorption methods. The effect of porosity difference on gas content was discussed. Shale pores are usually organic pores, mineral inter-particle pores,dissolution pores, inter-granular pores and inter-laminar cleavage cracks, and most of the pore shape was irregular and open.The pore structure of the samples was complex. Nano-scale organic pores were common in the Longmaxi Formation shale samples, and the pore diameter was 2-10 nm. Inorganic middle-large pores and micro-cracks were dominant in the Xujiahe Formation shale samples. The pore characteristics might result from different chemical mole-cular properties of organic matter in the shale, or a catalytic relationship between inorganic mineral or element and organic matter. Statistical results showed that the pore types were not the main controlling factors of gas content: TOC was the most essential factor for shale gas reservoir.The pore structure of the Xujiahe Formation shale samples was mainly affected by inorganic minerals.TOC was the dominant factor of specific surface area and 2-10 nm pores in the Longmaxi Formation shale samples, and provided the main storage space for shale gas.Illite was an important factor for 2-10 nm pores, which provided the main storage space for the Xujiahe shale gas.
- pore characteristics /
- organic pores /
- gas content /
- shale gas /
- southeastern Sichuan area /
- southeastern Chongqing area

HTML全文

参考文献(28)

[1]	Ambrose R J,Hartman R C,Campos MD,et al.New pore-scale considerations for shale gas in place calculations [C]//SPE Unconventional Gas Conference.Pittsburgh,Pennsylvania,USA:SPE,2010:1-17.
[2]	郭少斌,黄磊.页岩气储层含气性影响因素及储层评价:以上扬子古生界页岩气储层为例[J].石油实验地质,2013,35(6):601-606. Guo Shaobin,Huang Lei.Gas-bearing influential factors and evaluation of shale gas reservoir:A case study of Paleozoic shale gas reservoir in Upper Yangtze region[J].Petroleum Geology & Experiment,2013,35(6):601-606.
[3]	武瑾,王红岩,拜文华,等.渝东南龙马溪组页岩储层特征及吸附影响因素分析[J].断块油气田,2013,20(6):713-718. Wu Jin, Wang Hongyan, Bai Wenhua,et al.Analysis on characteristics of Longmaxi Formation shale reservoir in southeast district of Chongqing and adsorption influence factor[J].Fault-Block Oil & Gas Field,2013,20(6):713-718.
[4]	葛忠伟,樊莉.页岩气研究中应注意的问题[J].油气地质与采收率,2013,20(6):19-22. Ge Zhongwei,Fan Li.Some notable problems about shale gas in the scientific research[J].Petroleum Geology and Recovery Efficiency,2013,20(6):19-22.
[5]	冯子齐,于炳松,曾秋楠,等.鄂尔多斯东南部页岩气储层特征及其主控因素[J].特种油气藏,2013,20(6):40-43. Feng ZiQi,Yu Bingsong,Ceng Qiunan,et al.Southeastern ordos shale gas reservoir characteristics and its main controlling factors[J].Special Oil & Gas Reservoirs,2013,20(6):40-43.
[6]	马明福,李薇,刘亚村.苏丹Melut盆地北部油田储集层孔隙结构特征分析[J].石油勘探与开发,2005,32(6):121-124. Ma Mingfu,Li Wei,Liu Yacun.Pore structure characteristics analysis of the oilfield in north MelutBasin,Sudan[J].Petroleum Exploration and Development,2005,32(6):121-124.
[7]	陈尚斌,朱炎铭,王红岩,等.川南龙马溪组页岩气储层纳米孔隙结构特征及其成藏意义[J].煤炭学报,2012,37(3):438-444. Chen Shangbin,Zhu Yanming,Wang Hongyan,et al.Structurecharacteristics and accumulation significance of nanopores in Longmaxi shale gas reservoir in the southern Sichuan Basin[J].Journal of China Coal Society,2012,37(3):438-444.
[8]	冯爱国,张建平,石元会,等.中扬子地区涪陵区块海相页岩气层特征[J].特种油气藏,2013,20(6):15-19. Feng Aiguo,Zhang Jianping,Shi Yuanhui,et al.Characteristics of marine shale gas play in fuling block in the Middle Yangtze Area[J].Special Oil & Gas Reservoirs,2013,20(6):15-19.
[9]	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):13-26. 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):13-26.
[10]	黄金亮,邹才能,李建忠,等.川南志留系龙马溪组页岩气形成条件与有利区分析[J].煤炭学报,2012,37(5):782-787. Huang Jinliang,Zou Caineng,Li Jianzhong,et al.Shale gas accumulation conditions and favorable zones of Silurian Longmaxi Formation in south Sichuan Basin,China[J].Journal of China Coal Society,2012,37(5):782-787.
[11]	龙鹏宇,张金川,姜文利,等.渝页1井储层孔隙发育特征及其影响因素分析[J].中南大学学报:自然科学版,2012,43(10):3954-3964. Long Pengyu,Zhang Jinchuan,Jiang Wenli,et al.Analysis on pores forming features and its influence factors of reservoir well Yuye-1[J].Journal of Central South University:Science and Technology,2012,43(10):3954-3964.
[12]	田华,张水昌,柳少波,等.压汞法和气体吸附法研究富有机质页岩孔隙特征[J].石油学报,2012,33(3):419-427. Tian Hua,Zhang Shuichang,Liu Shaobo,et al.Determination of organic-rich shale pore features by mercury injection and gas adsorption methods[J].Acta Petrolei Sinica,2012,33(3):419-427.
[13]	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. 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.
[14]	陈尚斌,夏筱红,秦勇,等.川南富集区龙马溪组页岩气储层孔隙结构分类[J].煤炭学报,2013,38(5):760-765. Chen Shangbin,Xia Xiaohong,Qin Yong,et al.Classification of pore structures in shale gas reservoir at the Longmaxi Formation in the south of Sichuan Basin[J].Journal of China Coal Society,2013,38(5):760-765.
[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]	辜敏,鲜学福,杜云贵,等.威远地区页岩岩心的无机组成、结构及其吸附性能[J].天然气工业,2012,32(6):99-102. Gu Min,Xian Xuefu,Du Yungui,et al.Mineralcomposition,structure and adsorption properties of Weiyuan shale cores[J].Natural Gas Industry,2012,32(6):99-102.
[17]	潘磊,陈桂华,徐强,等.下扬子地区二叠系富有机质泥页岩孔隙结构特征[J].煤炭学报,2013,38(5):787-793. Pan Lei,Chen Guihua,Xu Qiang,et al.Pore structure characte-ristics of Permian organic-rich shale in Lower Yangtze area [J].Journal of China Coal Society,2013,38(5):787-793.
[18]	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. 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.
[19]	胡海燕.富有机质Woodford页岩孔隙演化的热模拟实验[J].石油学报,2013,34(5):820-825. Hu Haiyan.Porosity evolution of the organic-rich shale with thermal maturity increasing[J].Acta Petrolei Sinica,2013,34(5):820-825.
[20]	梁兴,张延山,杨洋,等.滇黔北地区筇竹寺组高演化页岩气储层微观孔隙特征及其控制因素[J].天然气工业,2014,34(2):18-26. Liang Xing,Zhang Yanshan,Yang Yang,et al.Microscopic pore structure and its controlling factors of overmature shale in the Lower Cambrian QiongzhusiFm,northern Yunnan and Guizhou provinces of China[J].Natural Gas Industry,2014,34(2):18-26.
[21]	王庆波,刘若冰,魏祥峰,等.陆相页岩气成藏地质条件及富集高产主控因素分析:以元坝地区为例[J].断块油气田,2013,20(6):698-703. Wang Qingbo, Liu Ruobing, Wei Xiangfeng, et al.Geologic condition of shale gas accumulation in continental facies and main controlling factors of enrichment and high production:Ta-king Yuanba District as an example[J].Fault-Block Oil & Gas Field,2013,20(6):698-703.
[22]	曾秋楠,于炳松,李昱霏.鄂尔多斯盆地东南部延长组页岩储层特征及控制因素[J].特种油气藏,2013,20(1):23-26. Zeng Qiunan,Yu Bingsong,Li Yufei.Reservoir characteristics and control factors in the shale bed of Yanchang Formation of Southeast in Ordos Basin[J].Special Oil & Gas Reservoirs,2013,20(1):23-26.
[23]	周德华,焦方正,郭旭升,等.川东北元坝区块中下侏罗统页岩油气地质分析[J].石油实验地质,2013,35(6):596-600. Zhou Dehua,Jiao Fangzheng,Guo Xusheng,et al.Geologic ana-lysis of Middle-Lower Jurassic shale reservoirs in Yuanba area,northeastern Sichuan Basin[J].Petroleum Geology & Experiment,2013,35(6):596-600.
[24]	琚宜文,姜波,王贵梁,等.构造煤结构及储层物性[M].徐州:中国矿业大学出版社,2005. Ju Yiwen,Jiang Bo,Wang Guiliang,et al.Tectonic coal structure and reservoir property[M].Xuzhou:China University of Mining and Technology Press,2005.
[25]	孙赞东,贾承造,李相方,等.非常规油气勘探与开发(下册)[M].北京:石油工业出版社,2011. Sun Zandong,Jia Chengzao,Li Xiangfang,et al.Unconventional oil and gas exploration and development (partⅡ)[M].Beijing:Petroleum Industry Press,2011.
[26]	卢红选,孟自芳,李斌,等.微量元素对褐煤有机质热解成烃的影响[J].油气地质与采收率,2008,15(2):64-66. Lu Hongxuan,Meng Zifang,Li Bin,et al.Effectsof trace element on pyrogenic hydrocarbon generation of lignite[J].Petroleum Geology and Recovery Efficiency,2008,15(2):64-66.
[27]	吴艳艳,秦勇.煤中矿物/金属元素在生气过程中的催化作用[J].地球科学进展,2009,24(8):882-890. Wu Yanyan,Qin Yong.Catalysis of mineral/metal elements during coal bed gas generation[J].Advances in Earth Science,2009,24(8):882-890.
[28]	吴艳艳,秦勇,刘金钟,等.矿物/金属元素在煤成烃过程中的作用:以黔西滇东上二叠统大河边煤矿煤样为例[J].天然气地球科学,2012,23(1):141-152. Wu Yanyan,Qin Yong,Liu Jinzhong,et al.Catalysis action of mineral/metal elements during coal-derived hydrocarbons process:An example of the late Permian coal from Dahebian coal mine in eastern Yunnan and western Guizhou[J].Natural Gas Geoscience,2012,23(1):141-152.