Xujiaweizi Depression Deep Volcanic Rock Weathering Crust Research

Abstract:

This paper based on the field outcrop ,core data, logging data , physical property data and testing data to research the weathering crust of the deep volcanic in xujiaweizi depression. Take red clay layer that developed on the top of volcanic rock as the identification mark, and take the logging response characteristics of volcanic rock weathering crust as division standard, to research weathering crust of volcanic rock. Results show that recognized 31 wells that developed volcanic rock weathering crust of deep K₁yc¹ and K₁yc³ volcanic of xujiaweizi depression that mainly distributed in Xuzhong and Anda region. Find that the main components of weathering crust are composed of rhyolite, volcanic breccia and tuff, and divide out dissolution and disintegration belt that are in conformity with the actual gas reservoir exploration position.

• Periodical: Advanced Materials Research (Volume 848)
• Pages: 297-301
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.848.297
• Online since: November 2013
• Authors: Wen Guang Wang*, Min Wang, Shuang Fang Lu
• Keywords: Volcanic Rock, Weathering Curst, Xujiawezi Depression

References

[1] Hou Lianhua, Luo Xia, Wang Jinghong, et al. Weathered volcanic crust and its petroleum geologic significance: A case study ofthe Carboniferous volcanic crust in northern Xinjiang[J]. PETROLEUM EXPLORATION AND DEVELOPMENT, 2013, 40(3): 257-274.

DOI: 10.1016/s1876-3804(13)60034-8

[2] Zou C N, Hou L H, Tao S Z, et al. Hydrocarbon accumulation mechanism and structure of large-scale volcanic weathering crust of the Carboniferous in northern Xinjiang, China. Sci China Earth Sci, 2011, 41 (11): 1613 ~ 1626.

DOI: 10.1007/s11430-011-4297-8

[3] LIU Jun-tian. Weathering Crust Model and Recognition of Carboniferous Kalagang Formation (C2k) Volcanic Rocks in Niudong Block, Santanghu Basin[J]. NATURAL GAS GEOSCIENCE, 2009, 20(01): 57-62.

[4] WANG Jinghong, JIN Jiuqiang, ZHU Rukai, et al. Characters and distribution patterns of effective reservoirs in the Carboniferous volcanic weathering crust in northern Xinjiang[J]. ACTA PETROLEI SINICA, 2011, 32(05): 757-766.

[5] Liu Weiliang, Xia Bin, Sun Zhilei et al. Study on relationship between unconformity and natural migration in Xujiaweizi fault depression, PGRE, 2011, 18(6): 14-17.

[6] Shan Xuanlong, Gao Xuan, Xu Hanliang. The Main Factors of intermediate and mafic volcanic gas reservoir-forming of Yingcheng Formation in Anda area of Songliao Baion[J]. Journal of Jilin University(Earth Science Edition) , 2012, 42(5): 1348-1357.