2009•Inner Mongolia Petrochemical IndustryRequires access
The Reserch on Sadimentary Facies of the Member 4 of Yingcheng Formation in Xujiaweiai Deoression
Hao Xie
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Abstract
The matrix lithology of tight sandstone/gravel reservoirs at the member 4 of Yingcheng formation of Xujiaweizi in Songliao basin is main target stratum of deep gas prospectingThe member 4 of Yingcheng formation can be divided into the upper and the lower of the member 4 of yingcheng By the analysis of observation well-cores,logging and seismic facies.the lower sequence belongs to many source.The major sediments of it come from the convex around the graden basin .It is dominated by the depositional system of fan delta facies and lacustrine facies;while the sediments of the upper sequence come from the south and north of the graden basin.It's dominated by the depositional system of braided river facies,braided delta and fan delta facies.