Journal of Jilin University(Earth Science Edition) ›› 2021, Vol. 51 ›› Issue (2): 325-335.doi: 10.13278/j.cnki.jjuese.20190246

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Natural Gas Characteristics and Source Analysis of Permian Volcanic Gas Reservoir: A Case Study of Well YT1 in Chengdu-Jianyang Area, Sichuan Basin

Tian Xingwang, Luo Bing, Sun Yiting, Liu Ran, Li Ya, Chen Yangui, Zhou Chunlin, Wang Hua, Li Yading, Wang Wei, Wang Yunlong, Yang Dailin   

  1. Exploration and Development Research Institute, Petro China Southwest Oil&Gas Field Company, Chengdu 610041, Sichuan, China
  • Received:2019-11-21 Published:2021-04-06
  • Supported by:
    Supported by the National Key R&D Plan Project (2017YFC0603106) and the National Science and Technology Major Special Topic (2017ZX05008-005-003)

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Abstract: At the end of December 2018, a high-yield gas-flow of 22.5×104m3/d was discovered by the risk exploration well of Permian volcanic rock-Well YT1 deployed by PetroChina southwest oil & gas field company, which made a breakthrough in the exploration of volcanic rocks in Sichuan basin and broadened a great exploration potential of pyroclastic gas reservoir. According to the latest drilling results,the latest analysis,and test data, the gas-gas correlation method in different areas was adopted. The analysis of the geochemical characteristics of natural gas, the anatomy of the source reservoir contact relationship and the comprehensive comparison of gas sources in this area were carried out,and the origin of natural gas in the Permian volcanic gas reservoir and the gas source were determined. The results show that the natural gas of Well YT1 in the volcanic gas reservoir is typically dry gas, with a drying coefficient of 0.997, the content of CH4 is high with an average of 99.03%, the content of C2H6 is low with an average of 0.35%, C3H8 is almost absent and the content of H2S is zero; the carbon isotope values of methane and ethane are relatively light with the average carbon isotopic values of-32.17‰ and -34.27‰ respectively,and a large amount of reservoir bitumen can be seen in the core and under the microscope. The genetic identification analysis shows that the natural gas of Well YT1 in the volcanic gas reservoir is the secondary cracked gas of crude oil. Based on the source reservoir contact relationship and the comparison of methane and ethane carbon isotopes of natural gas, the natural gas of Well YT1 in the volcanic gas reservoir is mainly from the thick, high-quality,and effective source rocks of the Lower Cambrian Qiongzhusi Formation, which developed in the internal rift valley of the Deyang-Anyue platform and partially from the Middle Permian.

Key words: Sichuan basin, Permian, Well YT1, pyroclastic rocks, natural gas, geochemistry, gas source

CLC Number: 

  • P618.13
[1] 翟光明. 中国石油地质志:卷十:四川油气区[M]. 北京:石油工业出版社, 1989. Zhai Guangming. Petroleum Geology of China:Vol 10:Sichuan Oil and Gas Area[M]. Beijing:Petroleum Industry Press, 1989.
[2] 四川省地质矿产局. 四川省区域地质志[M]. 北京:地质出版社, 1991. Geology and Mineral Resources Bureau of Sichuan Province. Regional Geology in Sichuan Province[M]. Beijing:Geological Publishing House, 1991.
[3] 余琪祥. 火山岩油气藏勘探价值凸显[J]. 石油知识,2017, 2(13):1-9. Yu Qixiang. Exploration Value of Volcanic Reservoir[J]. Petroleum Knowledge, 2017, 2(13):1-9.
[4] 徐义刚, 钟孙霖. 峨眉山大火成岩省:地幔柱活动的证据及其熔融条件[J]. 地球化学, 2001, 30(1):1-9. Xu Yigang, Zhong Sunlin. The Emeislian Large Igneous Province:Evidence for Mantle Plume Activity and Melting Conditions[J]. Geochimica, 2001, 30(1):1-9.
[5] 何斌, 徐义刚, 肖龙, 等. 峨眉山大火成岩省的形成机制及空间展布:来自沉积地层学的新证据[J]. 地质学报, 2003, 77(2):194-202. He Bin, Xu Yigang, Xiao Long, et al. Generation and Spatial Distribution of the Emeishan Large Igneous Province:New Evidence from Stratigraphic Records[J]. Acta Geologica Sinica, 2003, 77(2):194-202.
[6] 何斌, 徐义刚, 肖龙, 等. 峨眉山地幔柱上升的沉积响应及其地质意义[J]. 地质论评, 2006, 52(1):30-37. He Bin, Xu Yigang, Xiao Long,et al. Sedimentary Responses to Uplift of Emeishan Mantle Plume and Its Implications[J]. Geological Review, 2006, 52(1):30-37.
[7] Chung S L, Jahn B M. Plume-Lithosphere Interaction in Generation of the Emeishan Flood Basalts at the Permian-Triassic Boundary[J]. Geology, 1995, 23(10):79-93.
[8] Mahoney J J, Coffin M F. Large Igneous Provinces:Continental, Oceanic, and Planetary Flood Volcanism[M]. Washington:AGU Geophysical Monography, 1997.
[9] Xu Y G, Chung S L, Jahn B M, et al. Petrologic and Geochemical Constraints on the Petrogenesis of Permo-Triassic Emeishan Flood Basalts in Southwestern China[J]. Lithos, 2001, 58(3):145-168.
[10] 张招崇. 关于峨眉山大火成岩省一些重要问题的讨论[J]. 中国地质, 2009, 36(3):634-646. Zhang Zhaochong. A Discussion on some Important Problems Concerning the Emeishan Large Igneous Province[J]. Geology in China, 2009, 36(3):634-646.
[11] Thompson G M, Ali J R, Song X,et al. Emeishan Basalts, SW China:Reappraisal of the Formations Type Area Stratigraphy and a Discussion of Its Significance as a Large Igneous Province[J]. Journal of the Geological Society, 2001, 158(4):593-600.
[12] 赵海玲, 黄微, 王成, 等. 火山岩中脱玻化孔及其对储层的贡献[J]. 石油与天然气地质, 2009, 30(1):47-58. Zhao Hailing, Huang Wei, Wang Cheng, et al. Micropores from Devitrification in Volcanic Rocks and Their Contribution to Reservoirs[J]. Oil & Gas Geology, 2009, 30(1):47-58.
[13] 黄亮, 彭军, 周康, 等. 火山岩储层形成机制研究综述[J]. 特种油气藏, 2009, 16(1):1-5. Huang Liang, Peng Jun, Zhou Kang,et al.An Overview of the Studyon Formation Mechanism of Volcanic Reservoirs[J]. Special Oil & Gas Reservoirs, 2009, 16(1):1-5.
[14] Wignall P B. Large Igneous Provinces and Mass Extinctions[J]. Earth Science Reviews, 2001, 53(1):1-33.
[15] 张若祥. 川西南"峨眉山玄武"气藏特征研究[D]. 成都:西南石油大学, 2006. Zhang Ruoxiang. Study on the Characteristics of the "Emeishan Xuanwu" Gas Reservoir in Southwestern Sichuan[D]. Chengdu:Southwest Petroleum University, 2006.
[16] 何冰辉, 刘少峰, 吴鹏. 峨眉山大火成岩省形成后的海平面变化及沉积响应[J]. 云南地质, 2017, 36(3):319-326. He Binghui, Liu Shaofeng, Wu Peng. Sea Level Change and Sedimentary Response After the Formation of the Emeishan Large Igneous Province[J]. Yunnan Geology, 2017, 36(3):319-326.
[17] 马新华, 杨雨, 张健, 等. 四川盆地二叠系火山碎屑岩气藏勘探重大发现及启示[J]. 天然气工业, 2019, 39(2):1-8. Ma Xinhua, Yang Yu, Zhang Jian, et al. A Major Discovery of the Permian Volcanic Rock Gas Reservoir Exploration and Its Enlightenment in Sichuan Basin[J]. Natural Gas Industry, 2019, 39(2):1-8.
[18] 罗冰, 夏茂龙, 汪华, 等. 四川盆地西部二叠系火山岩气藏成藏条件分析[J]. 天然气工业, 2019, 39(2):9-16. Luo Bing, Xia Maolong, Wang Hua, et al. Analysis of Reservoir Forming Conditions of Permian Volcanic Gas Reservoirs in Western Sichuan Basin[J]. Natural Gas Industry, 2019, 39(2):9-16.
[19] 文龙, 李亚, 易海永, 等. 四川盆地二叠系火山岩岩相与储层特征[J]. 天然气工业, 2019, 39(2):17-27. Wen Long, Li Ya, Yi Haiyong, et al. Lithofacies and Reservoir Characteristics of Permian Volcanic Rocks in the Sichuan Basin[J]. Natural Gas Industry, 2019, 39(2):17-27.
[20] 陈骁, 何青林, 冉崎, 等. 四川盆地二叠系火山岩地震相特征及识别[J]. 天然气工业, 2019,39(2):28-36. Chen Xiao, He Qinglin, Ran Qi, et al. Features and Recognition for Seismic Facies of Permian Volcanic Reservoirs in the Sichuan Basin[J]. Natural Gas Industry, 2019, 39(2):28-36.
[21] 谢增业, 李志生, 魏国齐, 等. 腐泥型干酪根热降解成气潜力及裂解气判识的实验研究[J]. 天然气地球科学, 2016, 27(6):1057-1066. Xie Zengye, Li Zhisheng, Wei Guoqi, et al. Experimental Research on the Potential of Sapropelic Kerogen Cracking Gas and Discrimination of Oil Cracking Gas[J]. Natural Gas Geoscience, 2016, 27(6):1057-1066.
[22] 戴金星, 倪云燕, 秦胜飞, 等. 四川盆地超深层天然气地球化学特征[J]. 石油勘探与开发, 2018, 45(4):588-597. Dai Jinxing, Ni Yunyan, Qin Shengfei, et al. Geochemical Characteristics of Ultra-Deep Natural Gas in the Sichuan Basin, SW China[J]. Petroleum Exploration and Development, 2018, 45(4):588-597.
[23] 朱光有, 张水昌, 梁英波, 等. 硫酸盐热化学还原反应对烃类的蚀变作用[J]. 石油学报, 2005, 26(5):48-52. Zhu Guangyou, Zhang Shuichang, Liang Yingbo, et al. Alteration of Thermochemical Sulfate Reduction to Hydrocarbons[J]. Acta Petrolei Sinica, 2005, 26(5):48-52.
[24] 秦胜飞, 周国晓, 李伟, 等. 四川盆地威远气田水溶气脱气成藏地球化学证据[J]. 天然气工业, 2016, 36(1):43-51. Qin Shengfei, Zhou Guoxiao, Li Wei, et al. Geochemical Evidence of Water-Soluble Gas Accumulation in the Weiyuan Gas Field Sichuan Basin[J]. Natural Gas Industry, 2016, 36(1):43-51.
[25] 秦胜飞. 四川盆地水溶气碳同位素组成特征及地质意义[J]. 石油勘探与开发, 2012, 39(3):313-320. Qin Shengfei. Carbon Isotopic Composition of Water-Soluble Gases and Its Geological Significance in the Sichuan Basin[J]. Petroleum Exploration and Development, 2012, 39(3):313-320.
[26] 徐春春, 沈平, 杨跃明, 等. 乐山-龙女寺古隆起震旦系-下寒武统龙王庙组天然气成藏条件与富集规律[J]. 天然气工业, 2014, 34(3):1-7. Xu Chunchun, Shen Ping, Yang Yueming, et al. Accumulation Conditions and Enrichment Patterns of Natural Gas in the Lower Cambrian Longwangmiao Formation Reservoirs of the Leshan-Longnüsi Paleohigh, Sichuan Basin[J]. Natural Gas Industry, 2014, 34(3):1-7.
[27] 邹才能, 杜金虎, 徐春春, 等. 四川盆地震旦系-寒武系特大型气田形成分布、资源潜力及勘探发现[J]. 石油勘探与开发, 2014, 41(3):278-293. Zou Caineng, Du Jinhu, Xu Chunchun, et al. Formation, Distribution, Resource Potential and Discovery of the Sinian-Cambrian Giant Gas Field, Sichuan Basin, SW China[J]. Petroleum Exploration and Development, 2014, 41(3):278-293.
[28] 杨跃明, 文龙, 罗冰, 等. 四川盆地乐山-龙女寺古隆起震旦系天然气成藏特征[J]. 石油勘探与开发, 2016, 43(2):179-188. Yang Yueming, Wen Long, Luo Bing, et al. Hydrocarbon Accumulation of Sinian Natural Gas Reservoirs, Leshan-Longnüsi Paleohigh, Sichuan Basin, SW China[J]. Petroleum Exploration and Development, 2016, 43(2):179-188.
[29] 李双建, 周雁, 肖开华, 等. 四川盆地东南缘习水吼滩志留系古油藏特征[J]. 石油学报, 2009, 30(6):849-855. Li Shuangjian, Zhou Yan, Xiao Kaihua, et al. Characteristics of Silurian Destroyed Oil Reservoir in Houtan Section of Xishui Area in Southeastern Margin of Sichuan Basin[J]. Acta Petrolei Sinica, 2009, 30(6):849-855.
[30] 田兴旺, 胡国艺, 李伟, 等. 四川盆地乐山-龙女寺古隆起地区震旦系储层沥青地球化学特征及意义[J]. 天然气地球科学, 2013, 24(5):982-990. Tian Xingwang, Hu Guoyi, Li Wei, et al. Geochemical Characteristics and Significance of Sinian Reservoir Bitumen in Leshan-Longnüsi Paleo-Uplift Area, Sichuan Basin[J]. Natural Gas Geoscience, 2013, 24(5):982-990.
[31] 马永生. 普光气田天然气地球化学特征及气源探讨[J]. 天然气地球科学, 2008, 19(1):1-7. Ma Yongsheng. Geochemical Characteristics and Origin of Natural Gases from Puguang Gas Field on Eastern Sichuan Basin[J]. Natural Gas Geoscience, 2008, 19(1):1-7.
[32] 蔡勋育, 朱扬明, 黄仁春. 普光气田沥青地球化学特征及成因[J]. 石油与天然气地质, 2006, 27(3):340-347. Cai Xunyu, Zhu Yangming, Huang Renchun. Geochemical Behaviors and Origin of Reservoir Bitumen in Puguang Gas Pool[J]. Oil & Gas Geology, 2006, 27(3):340-347.
[33] 王铜山, 耿安松, 孙永革, 等. 川东北飞仙关组储层固体沥青地球化学特征及其气源指示意义[J]. 沉积学报, 2008, 26(2):340-348. Wang Tongshan, Geng Ansong, Sun Yongge, et al. Geochemical Characteristics of Solid Bitum en in Reservoir and Their Implication for the Origin of Natural Gas of Feixianguan Formation in Northeastern Sichuan Basin[J]. Acta Sedimentologica Sinica, 2008, 26(2):340-348.
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