Characteristic and Influencing Factors of Carboniferous Volcanic Reservoirs in Santanghu Basin

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  • 1.Langfang Branch, Research Institute of Petroleum Exploration and Development, PetroChina, Langfang 065007, China; 2. Research Institute of Petroleum Exploration and Development, Tuha Oilfield, Hami 839000, China

Received date: 2009-02-23

  Revised date: 2009-06-09

  Online published: 2009-08-10

Abstract

The study of petrologic characteristics, reservoir space types and diagenesis evolution of Carboniferous volcanic rocks in Santanghu basin shows that the main type of volcanic rock is basalt-dominant volcanic lava, and the main oil\|bearing space is amygdale and dissolved matrix pores. The subsequent analysis of volcanic reservoirs reveals that the ingredient and structure determine the potential of secondary pores development, and the reservoir quality is improved significantly in the volcanic rocks which contain less phenocryst, more hyaline and more porosity, and the scoriaceous lava on the top of the effusive facies is the major reservoir. It also reveals that zeolite and chlorite are regularly distributed in the volcanic reservoirs, and the weathering and leaching area nearby the hydrocarbon generation center and the slope zone is the most favorable area for reservoirs

Cite this article

LIN Chong, JIAO Gui-Gao, SUN Beng, WANG Dong-Liang, LIANG Gao, WANG Zhi-Yong . Characteristic and Influencing Factors of Carboniferous Volcanic Reservoirs in Santanghu Basin[J]. Natural Gas Geoscience, 2009 , 20(4) : 513 -517 . DOI: 10.11764/j.issn.1672-1926.2009.04.513

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