上扬子地区下寒武统牛蹄塘组页岩气成藏条件

摘要/Abstract

摘要： 基于上扬子地区下寒武统牛蹄塘组黑色页岩的野外露头、钻井、岩心等资料，通过显微薄片、扫描电镜及X-衍射、压汞分析、等温吸附等多项实验测试分析，以牛蹄塘组黑色页岩的地层、岩石学、地球化学、地球物理和页岩含气性等为重点，对上扬子地区下寒武统牛蹄塘组页岩气形成的成藏条件与特征进行了初步探索。研究表明上扬子地区下寒武统牛蹄塘组以浅水-深水陆棚沉积环境控制富有机质页岩的发育，沉积厚度一般在50~300 m；有机碳含量在1.5%以上，有机质成熟度达到高-过成熟阶段；富有机质页岩脆性矿物丰富、粘土矿物演化程度高，以伊利石稳定矿物为主，不含蒙脱石；多种孔隙类型及裂缝发育，可为页岩气的赋存提供良好储集空间；富有机质页岩含气量达到了页岩气商业开发下限2.0 m³/t。综合各种成藏条件，认为资阳-自贡一带、黔北和渝东南-湘鄂西地区为页岩气有利勘探区带。

关键词: 富有机质页岩, 成藏条件, 有利勘探区带, 牛蹄塘组, 上扬子地区

Abstract: Based on outcrops,drilling and core data,combining with analysis of thin section,SEM,X-ray diffraction,mercury porosimetry and isothermal adsorption,this paper studied the accumulation conditions and characteristics of shale gas of the Lower Cambrian Niutitang Formation in Upper Yangtze Region,with focus on the stratigraphic,petrologic,geoche-mical and geophysical characteristics as well as gas storage capacity.The results show that the distribution of the organic-rich shale of the Lower Cambrian Niutitang Formation in Upper Yangtze Region is controlled by the shallow to deep water shelf sedimentary environment,where shale thickness generally ranges from 50 to 300 m.The shale has a total organic carbon content over 1.5% and is highly mature to over mature.The organic-rich shale has abundant brittle minerals and the clay minerals with high evolution are dominated by stable minerals such as illite but without any montmorillonite.The various types of pores and fractures provide effective reservoir space for shale gas,and the gas content reaches the lowest commercial development value(2.0 m³/t).Comprehensive analysis of these conditions reveals that the Ziyang-Zigong area,the northern Guizhou,eastsouthern Chongqing and eastern Hubei and Hunan Province are favorable exploration areas.

Key words: organic-rich shale, accumulation condition, favorable exploration area, Niutitang Formation, Upper Yangtze region

中图分类号:

TE122

胡明毅,邓庆杰,胡忠贵. 上扬子地区下寒武统牛蹄塘组页岩气成藏条件[J]. 石油与天然气地质, 2014, 35(2): 272-279. doi: Hu Mingyi,Deng Qingjie,Hu Zhonggui. Shale gas accumulation conditions of the Lower Cambrian Niutitang Formation in Upper Yangtze region[J]. Oil & Gas Geology, 2014, 35(2): 272-279. doi:

参考文献

[1] 张金川, 徐波, 聂海宽, 等.中国天然气勘探的两个重要领域[J].天然气工业, 2007, 27(11):1-6. Zhang Jinchuan, Xu Bo, Nie Haikuan, et al.Two essential gas accumulations for natural gas exploration in china[J].Natural Gas Industry, 2007, 27(11):1-6.
[2] 张大伟.加速我国页岩气资源调查和勘探开发战略构想[J].石油与天然气地质, 2010, 31(2):135-139. Zhang Dawei.Strategic concepts of accelerating the survey, exploration and exploitation of shale gas resources in China[J].Oil& Gas Geology, 2010, 31(2):135-139.
[3] 程克明, 王世谦, 董大忠, 等.上扬子区下寒武统筇竹寺组页岩气成藏条件[J].天然气工业, 2009, 29(5):40-44. Cheng Keming, Wang Shiqian, Dong Dazhong, et al.Accumulation conditions of shale gas reservoirs in the Lower Cambrian Qiongzhusi Formation, the Upper Yangtze region[J].Natural Gas Industry, 2009, 29(5):40-44.
[4] 腾格尔, 高长林, 胡凯, 等.上扬子东南缘下组合优质烃源岩发育及生烃潜力[J].石油实验地质, 2010, 28(4):359-364. Tenger, Gao Changlin, Hu Kai, et al.High-quality source rocks in the Lower Combination in southeast Upper-Yangtze area and their hydrocarbon generating potential[J].Petroleum Geology & Experiment, 2010, 28(4):359-364.
[5] 陈波, 兰正凯.上扬子地区下寒武统页岩气资源潜力[J].中国石油勘探, 2009, 3:10-14. Chen Bo, Lan Zhengkai, Lower Cambrian shale gas resource potential in Upper Yangtze Region[J].China Petroleum Exploration, 2009, 3:10-14.
[6] 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. Nie Haikuan, Zhang Jinchu.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.
[7] 聂海宽, 张金川, 李玉喜.四川盆地及其周缘下寒武统页岩气聚集条件[J].石油学报, 2011, 32(6):659-666. Nie Haikuan, Zhang Jinchuan, Li Yuxi.Accumulation conditions of the Lower Cambrian shale gas in the Sichuan Basin and its periphery[J].Acta Petrolei Sinica, 2011, 32(6):659-666.
[8] 周明辉, 梁秋原.黔中隆起及其周缘地区"下组合"油气地质特征[J].海相油气地质, 2006, 11(2):17-24. Zhou Minghui, Liang Qiuyuan.Petroleum geological conditions of lower assemblage in Qianzhong Uplift and peripheral regions[J].Marine Origin Petroleum Geology, 2006, 11(2):17-24.
[9] 王鹏万, 陈子抖, 贺训云, 等.黔南坳陷下寒武统页岩气成藏条件与有利区带评价[J].天然气地球科学, 2011, 22(3):518-523. Wang Pengwan, Chen Ziliao, He Xunyun, et al.Accumulation of Lower Cambrian Niutitang shale gas and prediction of potential area in Qiannan Sag[J].Natural Gas Geoscience, 2011, 22(3):518-523.
[10] 王世谦, 陈更生, 董大忠, 等.四川盆地下古生界页岩气藏形成条件与勘探前景[J].天然气工业, 2009, 29(5):51-58. Wang Shiqian, Chen Gengsheng, Dong Dazhong, et al.Accumulation conditions and exploitation prospect of shale gas in the Lower Paleozoic Sichuan basin[J].Natural Gas Industry, 2009, 29(5):51-58.
[11] 梁狄刚, 郭彤楼, 陈建平, 等.中国南方海相生烃成藏研究的若干新进展(一)南方四套区域性海相烃源岩的分布[J].海相油气地质, 2008, 13(2):1-16. Liang Digang, Guo Tonglou, Chen Jianping, et al.Some Progresses on studies of hydrocarbon generation and accumulation in marine sedimentary regions, Southern China (Part 1):distribution of four suits of regional marine source rocks[J].Marine Origin Petroleum Geology, 2008, 13(2):1-16.
[12] 聂永生, 冷济高, 韩建辉, 等.黔东南地区岑巩页岩气区块勘探潜力[J].石油与天然气地质, 2013, 34(2):274-280. Nie Yongsheng, Leng Jigao, Han Jianhui, et al.Exploration potential of shale gas in Cen'gong block, southeastern Guizhou province[J].Oil & Gas Geology, 2013, 34(2):274-280.
[13] 李娟, 于炳松, 张金川, 等.黔北地区下寒武统黑色页岩储层特征及其影响因素[J].石油与天然气地质, 2012, 33(3):364-374. Li Juan, Yu Bingsong, Zhang Jinchuan, et al.Reservoir characteristics and their influence factors of the Lower Cambrian dark shale in nor-thern Guizhou[J].Oil & Gas Geology, 2012, 33(3):364-374.
[14] Robert G, Stephen C.Mississippian barnett shale:lithofacies and de-positional setting of a deeprwater shalegas succession in the FortWorth Basin, Texas[J].AAPG, 2007, 91(4):579-601.
[15] 胡明毅, 邓庆杰, 邱小松.上扬子地区下寒武统牛蹄塘组页岩气储层矿物成分特征[J].石油与天然气学报, 2013, 35(5):1-6. Hu Mingyi, Deng Qingjie, Qiu Xiaosong.Characteristics of mineral composition of shale gas reservoirs of Lower Cambrian Niutitang Formation in the Upper Yangtze Region[J].Journal of Oil and Gas Technology, 2013, 35(5):1-6.
[16] 郭岭, 姜在兴, 姜文利.页岩气储层的形成条件与储层的地质研究内容[J].地质通报, 2011, 30(2-3):385-391. Guo Ling, Jiang Zaixing, Jiang Wenli.Formation condition of gas bearing shale reservoir and its geological research target[J].Geological Bulletin of China, 2011, 30(2/3):385-392.
[17] 何金先, 段毅, 张晓丽, 等.渝南—黔北地区下寒武统牛蹄塘组页岩气成藏的生烃条件[J].海洋地质前沿, 2011, 27(7):34-39. He Jinxian, Duan Yi, Zhang Xiaoli, et al.Hydrocarbon generation conditions of the shale in Niutitang formation of Lower Cambrian, Southern Chongqing and Northern Guizhou[J].Marine Geology Frontiers, 2011, 27(7):34-39.
[18] 黄文明, 刘树根, 马文辛, 等.川东南—鄂西渝东地区下古生界页岩气勘探前景[J].地质通报, 2011, 30(2-3):365-371. Huang Wenming, Liu Shugen, Ma Wenxin, et al.Shale gas exploration prospect of Lower Paleozoic in southeastern Sichuan and western Hubei-eastern Chongqing areas, China[J].Geological Bulletin of China, 2011, 30(2/3):364-371.
[19] 聂海宽, 张金川.页岩气聚集条件及含气量计算—以四川盆地及其周缘下古生界为例[J].地质学报, 2012, 86(2):1-11. Nie Haikuan, Zhang Jinchuan.Shale gas accumulation conditions and gas content calculation:a case study of Sichuan Basin and its periphery in the Lower Paleozoic[J].Acta Geologica Sinica, 2012, 86(2):1-11.
[20] 吴根耀, 梁兴, 马力.扬子克拉通继承性构造与新生构造并存的时空发育特征及其对海相油气勘探的指导[J].石油实验地质, 2009, 31(1):1-10. Wu Genyao, Liang Xing, Ma Li.Time-spatial developing features of co-existed inherited and neogenic structures and their guidance to marine origin oil-gas exploration in the Yangtze craton[J].Petroleum Geology & Experiment, 2009, 31(1):1-10.
[21] 沃玉进, 汪新伟.中、上扬子地区地质结构类型与海相层系油气保存意义[J].石油与天然气地质, 2009, 30(2):177-187. Wo Yujin, Wang Xinwei.Geologic configuration types of the middle-upper Yangtze region and their significance for hydrocarbon preservation in marine strata[J].Oil& Gas Geology, 2009, 30(2):177-187.
[22] 汪新伟, 沃玉进, 周雁, 等.构造作用对油气保存影响的研究进展以上扬子地区为例[J].石油实验地质, 2011, 33(1):34-42. Wang Xinwei, Wo Yujin, Zhou Yan, et al.Primary discussion on relationship between hydrocarbon preservation and tectonic movement—a case study in upper Yangtze region[J].Petroleum Geology & Experiment, 2011, 33(1):34-42.
[23] 黄文明, 刘树根, 王国芝, 等.四川盆地下古生界油气地质条件及气藏特征[J].天然气地球科学, 2011, 22(3):465-473. Huang Wenming, Liu Shugen, Wang Guozhi, et al.Geological conditions and gas reservoir features in Lower Paleozoic in Sichuan Basin[J].Natural Gas Geoscience, 2011, 22(3):465-473.
[24] 谢忱, 张金川, 李玉喜, 等.渝东南渝科1井下寒武统富有机质页岩发育特征与含气量[J].石油与天然气地质, 2013, 34(1):11-15. Xie Chen, Zhang Jinchuan, Li Yuxi, et al.Characteristics and gas content of the Lower Cambrian dark shale in Well Yuke1, Southeast Chongqing[J].Oil & Gas Geology, 2013, 34(1):11-15.
[25] 刘洪林, 王红岩, 刘人和, 等.中国页岩气资源及其勘探潜力分析[J].地质学报, 2010, 84(9):1374-1377. Liu Honglin, Wang Hongyan, Liu Renhe, et al.China shale gas resources and prospect potential[J].Acta Geologica Sinica, 2010, 84(9):1374-1377.
[26] 李新景, 吕宗刚, 董大忠, 等.北美页岩气资源形成的地质条件[J].天然气工业, 2009, 29(5):27-32. Li Xinjing, Lu Zonggang, Dong Dazhong, et al.Geologic controls on accumulation of shale gas in North America[J].Natural Gas Industry, 2009, 29(5):27-32.