Oil & Gas Geology ›› 2012, Vol. 33 ›› Issue (4): 511-519.doi: 10.11743/ogg20120403

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Current status and problems of volcanic reservoir study: an example from the Lower Permian volcanic rocks in Ke-Xia area of Junggar Basin

Dong Guodong, Zhang Qin, Zhu Xiaomin, Xian Benzhong, Zhu Shifa, Niu Huapeng, Chen Qingyun   

  1. State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China
  • Received:2012-05-04 Revised:2012-06-15 Online:2012-08-28 Published:2012-09-11

Abstract:

Taking the Lower Permian volcanic rocks of Ke-Xia area in Junggar Basin as an example,this paper discussed the problems of volcanic reservoir research.As there is still no commonly accepted classification scheme of volcanic rocks,different classification criteria were adopted in exploration and development of volcanic reservoirs.Thus it is urgent to find a suitable classification scheme of volcanics for exploration and development of volcanic reservoirs in China.There are many big challenges in the study on the volcanic eruption patterns and facies distribution due to strong volcanic facies heterogeneity,variable eruption types,complex volcanic facies and facies sequence,common overlapping of volcanic rocks of different origins,as well as limited drilling data of volcanic reservoirs.The characteristics and genesis of fractures especially micro-fractures in volcanic reservoirs are still poorly understood.To solve these problems,more attentions should be paid to surface diagenesis of volcniac rocks and advanced logging techniques should be applied to research on volcanic reservoirs.

Key words: diagenesis, volcanic classification, volcanics, reservoir, Junggar Basin

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