Study On Sedimentary Facies Of Tai 2 Member Gas Zone In Daniudi Gas Field Da 35-Da 47 Well Areas

Using drilling, geology and logging data, Taking the sequence stratigraphy, sedimentology and reservoir petrology as the instructions, bed of Tai 2 member in Daniudi gas field are divided, so, 2 cycles and 4 beds are divided, based isochronal stratigraphic framework; based on this, single well sedimentary facies and sedimentary microfacies are divided, combining the sandstone thickness map of each deposition units, analysises sedimentary facies and sedimentary models, then,bring forward that that enviromnent is barriers in Tai 2 member; and then, Analysized generally the relations of sedimentary microfacies, reservoir physical quality and the output of gas well, definitude that the control action of sedimentary facies forreservoir physical quality, output and distribution, at last, according to logging,core, reservoir charaeteristies and so on,classify evaluates reservoir, classify intoI,â…¡,â…¢reservoir inTai 2 member,forecast favorbale resevroir disrtibution.