渝东南地区黔江凹陷五峰组&mdash;龙马溪组页岩储层特征及其对含气量的影响

毕赫,姜振学，李鹏，李卓，唐相路，张定宇，许野

doi:10.11764/j.issn.1672-1926.2014.08.1275

天然气地球科学 >

2014 , Vol. 25 >Issue 8: 1275 - 1283

DOI: https://doi.org/10.11764/j.issn.1672-1926.2014.08.1275

非常规天然气

渝东南地区黔江凹陷五峰组—龙马溪组页岩储层特征及其对含气量的影响

展开

1.中国石油大学（北京）油气资源与探测国家重点实验室，中国石油大学（北京）非常规天然气研究院，北京 102249；2.中国石油勘探开发研究院，北京 100083；3.重庆市国土资源和房屋管理局，重庆 400000）

毕赫（1989-），女，黑龙江大庆人，硕士研究生，主要从事非常规油气藏形成与分布、盆地分析与油气资源评价研究. E-mail：bihecup@163.com.

收稿日期: 2013-09-02

修回日期: 2013-11-29

网络出版日期: 2014-08-10

基金资助

国家科技重大专项课题(编号：2011ZX05018-002)；重庆市国土资源和房屋管理局科技计划重大项目（编号：CQGT-KJ-2012）联合资助.

收起

#br# Shale Reservoir Characteristics and Its Influence on Gas Contentof Wufeng-Longmaxi Formation in the Southeastern Chongqing

Expand

1.State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum UnconventionalNational Gas Institute,China University of Petroleum,Beijing 102249,China;2.Research Institute of Petroleum
Exploration and Development,Petrochina,Beijing 100083,China;3.Chongqing Administration of Land,Resources and Housing,Chongqing 400000,China)

Received date: 2013-09-02

Revised date: 2013-11-29

Online published: 2014-08-10

Fold

摘要

渝东南地区黔江凹陷五峰组—龙马溪组页岩气的勘探仍处于初级阶段，储层特征与含气性关系仍不明确，开展五峰组—龙马溪组页岩的储层特征及含气性的研究，对评价研究区页岩气资源潜力具有重要意义。通过采集该套页岩岩心样品，完成详细的储层特征分析和含气性分析测试，包括岩石薄片鉴定、X-射线衍射、TOC分析、显微组分实验、氮气吸附实验、扫描电镜实验和现场解析等，结果表明，五峰组—龙马溪组页岩以黏土—粉砂级细粒沉积为主；页岩有机碳含量为0.22%~5.31%，成熟度为1.78%~2.93%，处于高—过成熟阶段，纳米级有机孔隙发育；矿物成分中脆性矿物含量为38.4%~86.7%，黏土矿物含量为12.1%~56.5%，其中微—纳米级无机孔隙较为发育，此外微裂缝的发育也对页岩气聚集和开发提供了有利条件。五峰组—龙马溪组页岩含气量为0.07~2.81m³/t，其底部富有机质页岩的含气量超过1m³/t。综合分析认为页岩TOC值和石英含量越高、长石和绿泥石含量越低时页岩中孔隙及比表面积越大，页岩含气量越大。


关键词： 渝东南地区; 五峰组— 龙马溪组; 储层特征; 微观孔隙; 扫描电镜; 含气性

本文引用格式

毕赫,姜振学，李鹏，李卓，唐相路，张定宇，许野 . 渝东南地区黔江凹陷五峰组—龙马溪组页岩储层特征及其对含气量的影响[J]. 天然气地球科学, 2014 , 25(8) : 1275 -1283 . DOI: 10.11764/j.issn.1672-1926.2014.08.1275

Abstract

The exploration of Wufeng-Longmaxi Formation shale in southeastern Chongqing is still in its infancy.The relationship between reservoir characteristics and hydrocarbon content is not explicit.Therefore,studies on the reservoir characteristics and the controlling factors of influencing hydrocarbon content are significant for the evaluation of shale gas resource potential.Through the thin section analysis,X-ray diffraction,TOCanalysis,maceral test,nitrogen adsorption test,scanning electron microscopy (SEM) and field adsorption test,the results reveal that the shale is clay- to silt-sized class deposition;total organic carbon varies from 0.22% to 5.31% at high to over mature stage which lead to thermal cracking of organic matter to form lots of nanoscale organic pore;mineral component mainly comprises of brittle minerals (38.4%-86.7%) and clay minerals (12.1%-56.5%);abundant micro-nanoscale inorganic porous develop inside of mineral grains and development of microfracture helped the accumulation for shale gas.The gas content is 0.07-2.81m³/t,over 1m³/t of which distributes in the bottom of the shale with abundant organic matter.Higher content of organic matter and quartz as well as lower content of feldspar and chlorite lead to higher porosity and specific surface area,which contributes to more gas content.

Key words： Southeastern Chongqing; Wufeng-Longmaxi Formation; Reservoir characteristics; Microscopic pore; SEM; Gas content

参考文献

［1］Zhang Jinchuan,Jin Zhijun,Yuan Mingsheng, et al. Reservoiring mechanism of shale gas and its distribution[J].Natural Gas Industry,2004,24(7):15-18.［张金川,金之钧,袁明生.页岩气成藏机理和分布[J].天然气工业,2004,24(7):15-18.］
［2］Dong Dazhong,Cheng Keming,Wang Yuman, et al. Forming conditions and characteristics of shale gas in the Lower Paleozoic of the Upper Yangtze region,China[J].Oil ＆ Gas Geology,2010,31(3):288-299.［董大忠,程克明,王玉满,等.中国上扬子区下古生界页岩气形成条件及特征[J].石油与天然气地质,2010,31(3):288-299.］
［3］Li Yifan,Fan Tailiang,Gao Zhiqian, et al. Sequence stratigraphy of Silurian black shale and its distribution in the sourtheast area of Chongqing[J].Natural Gas Geosciences,2012,23(2):299-306.［李一凡,樊太亮,高志前,等.渝东南地区志留系黑色页岩层序地层研究[J].天然气地球科学,2012,23(2):299-306.］
［4］Wan Fang,Xu Xiaosong.Tectonic-lithofacies paleogeography of the Silurian in Sichuan-Yunnan-Guizhou-Guangxi region[J].Journal of Paleogeography,2003,5(2):180-186.［万方,许效松.川滇黔桂地区志留纪构造—岩相古地理[J].古地理学报,2003,5(2):180-186.］
［5］Jia Jinhua,Zou Caineng.Reservoir and oil-gas pool characteristics of Paleozoic marine clastic rocks in China[J].Earth Science:Journal of China University of Geosciences,2012,37(2):55-66.［贾进华,邹才能.中国古生代海相碎屑岩储层与油气藏特征[J].地球科学:中国地质大学学报,2012,37(2):55-66.］
［6］Wan Hongcheng,Sun Wei,Liu Shugen, et al. General situation and prospect evaluation of the shale gas in Wufeng-Longmaxi Formation of Sichuan Basin and surrounding areas[J].Journal of Chengdu University of Technology:Science & Technology Edition,2012,39(2):176-181.［万洪程,孙玮,刘树根,等.四川盆地及周缘地区五峰组—龙马溪组页岩气概况及前景评价[J].成都理工大学学报:自然科学版,2012,39(2):176-181.］
［7］Guo Wei,Liu Honglin,Li Xiaobo, et al. Reservoir characteristics and factors controlling gas-bearing capacity of black rocks in the northeastern Yunnan[J].Natural Gas Industry,2012,32(9):22-27.［郭伟,刘洪林,李晓波,等.滇东北黑色岩系储层特征及含气性控制因素[J].天然气工业,2012,32(9):22-27.］
［8］Curtis J B.Fractured shale-gas systems[J].AAPG Bulletin,2002,86(11):1921-1938.
［9］Pollastro R M,Jarvie D M,Hill R J, et al. Geologic framework of the Mississippian Barnett Shale[J].AAPG Bulletin,2007,91(4):405-436.
［10］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):479-499.
［11］Zhou C,Jiang S Y.Palaeoceanographic redox environments for the Lower Cambrian Hetang Formation in South China:Evidence from pyrite framboids,redox sensitive trace elements,and sponge biota occurrence[J].Palaeogeography,Palaeoclimatology,Palaeoecology,2009,271(3):279-286.
［12］Chang Huajin,Chu Xuelei.Pyrite framboids and palaeo-ocean redox condition reconstruction[J].Advances in Earth Science,2011,26(5):475-481.［常华进,储雪蕾.草莓状黄铁矿与古海洋环境恢复[J].地球科学进展,2011,26(5):475-481.］
［13］Milner M R,McLin J P.Imaging Texture and Porosity in Mudstones and Shales:Comparison of Secondary and Ion-milled Backscatter SEM Mehods ［R］.Calgary:Canadian Unconventional Resources & International Petroleum Conference,2010.
［14］Han Shuangbiao,Zhang Jinchuan,Yang Chao, et al. The characteristics of nanoscale pore and its gas storage capability in the Lower Cambrian shale of southeast Chongqing[J].Journal of China Coal Society,2013,38(6):1038-1043.［韩双彪,张金川,杨超,等.渝东南下寒武页岩纳米级孔隙特征及其储气性能[J].煤炭学报,2013,38(6):1038-1043.］
［15］Ross D J K,Bustin R M.Characterizing the shale gas resource potential of Devonian-Mississippian strata in the Western Canada sedimentary basin:Application of an integrated formation evaluation[J].AAPG Bulletin,2008,92(1):87-125.
［16］Montgomery S L,Jarvie D M,Bowker K A, et al. Mississippian Barnett Shale,Fort Worth basin,north-central Texas:Gas-shale play with multi-trillion cubic foot potential[J].AAPG Bulletin,2005,89(2):155-175.
［17］Long Pengyu,Zhang Jinchuan,Tang Xuan, et al. Feature of muddy shale fissure and its effect for shale gas exploration and development[J].Natural Gas Geosciences,2011,22(3):525-532.［龙鹏宇,张金川,唐玄,等.泥页岩裂缝发育特征及其对页岩气勘探和开发的影响[J].天然气地球科学,2011,22(3):525-532.］
［18］Gale J F W,Reed R M,Holder J.Natural fractures in the Barnett Shale and their importance for hydraulic fracture treatments[J].AAPG Bulletin,2007,91(4):603-622.
［19］Maliva R G,Siever R.Mechanism and controls of silicification of fossils in limestones[J].The Journal of Geology,1988:387-398.
［20］Zhang Qin,Liu Honglin,Bai Wenhua, et al. Shale gas content and its main controlling factors in Longmaxi shales in southeastern Chongqing[J].Natural Gas Industry,2013,33(5):35-39.［张琴,刘洪林,拜文华,等.渝东南地区龙马溪组页岩含气量及其主控因素分析[J].天然气工业,2013,33(5):35-39.］
［21］Wang Xiang,Liu Yuhua,Zhang Min, et al. Conditions of formation and accumulation for shale gas[J].Natural Gas Geosciences,2010 21(2):350-356.［王祥,刘玉华,张敏,等.页岩气形成条件及成藏影响因素研究[J].天然气地球科学,2010 21(2):350-356.］

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献