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地球物理学进展 2009
Prediction of reservoirs in volcanic rocks of the Yingcheng formation in the Fengle area north of the Songliao basin
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Abstract:
As the Yingcheng formation is an important gas producing formation in the Xujiaweizi fault depression,research on that formation has significant meaning.We have made fine structural interpretation and volcanic seismic facies and lithofacies analysis,and basing on that,we predict reservoirs of the Yingcheng formation of Lower Crataceous by using high resolution seismic data,analytical data of petrophysics and logging information.At the same time we use the advanced prediction method and technique to depict the reservoirs in volcanic rocks in detail.In the end,we conclude that amplitude-RMS,instant frequency energy and instant Q energy can preferably reflect lithology and physical propeviies of reservoirs.On inversion sections,beneficial reservoirs have low-to-moderate impedance and moderate density.Good reservoirs distribute mainlyin the west and middle of this area.