Lithofacies of Volcanic Reservoir of One Member of Yingcheng Formation in Xudong Area in Xushen Gas Field
Received date: 2009-11-12
Revised date: 2010-04-25
Online published: 2010-12-10
Based on volcanic rock types,we identified the volcanic bodies,in combination with geological background,logging and seismic data.Volcanic lithofacies for selective layer were classified into 5 facies,such as eruptive and effusive,etc.and 16 sub-facies,like as landing,etc.By means of seismic facies and volcanic lithofacies for single well,cut and plane sections,we found out that crater distribution constrained development of volcanic body,associated with different volcanic facies in the different positions of volcanic body.The space of volcanic facies controlled the high quality reservoir of volcanic rock.Most of high-quality reservoir was mainly distributed in the areas of eruptive and effusive facies,and few did in other facies.The high-quality reservoir was developed in the areas of landing and air falling sub-facies in eruptive facies,outer and middle extrusive sub-facies in extrusive facies,lower,upper and top sub-facies in overflow facies,and volcanic neck sub\|facies in volcanic channels facies.
Key words: Xushen gas field; Volcanic rock; Reservoir; Lithofacies; Volcanic body.
CHEN Huan-Qiang, HU Yong-Le, RAN Qi-Quan, YAN Lin, WANG Yong-Jun, HU Lei . Lithofacies of Volcanic Reservoir of One Member of Yingcheng Formation in Xudong Area in Xushen Gas Field[J]. Natural Gas Geoscience, 2010 , 21(6) : 924 -930 . DOI: 10.11764/j.issn.1672-1926.2010.06.924
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