Sedimentary Facies of Upper Member of the Lower Ganchaigou Formation in Gasikule Oilfield and Its Evolution Regular Pattern
Received date: 2011-11-25
Revised date: 2012-08-10
Online published: 2012-10-10
Based on the abundant drilling and logging data,full application of deposition theory,analyses of the sedimentary facies of the lower Ganchaigou Formation in the Gasikule oilfield,4 types of sedimentary facies have been identified in the study area,including delta,coastal lake,shallow lake and semi-deep lake.Frequent seiches of lake in the upper member of the lower Ganchaigou Formation in the region are studied through single well facies and profile facies analyses.It formed 5 fourth class sequences during the process of small-scale lake transgression to lake regression,which determined the vertical evolution and superimposed texture of sedimentary microfacies in the study area.Through the study of sedimentary facies,sedimentary microfacies have been divided,which provide significant guidance to the future research and the exploration and development of the studied formation.
BAO Ji-cheng,GUAN Ping,LEI Tao,FAN Xin-wen . Sedimentary Facies of Upper Member of the Lower Ganchaigou Formation in Gasikule Oilfield and Its Evolution Regular Pattern[J]. Natural Gas Geoscience, 2012 , 23(5) : 884 -890,959 . DOI: 10.11764/j.issn.1672-1926.2012.05.884
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