Reservoir Description And Evaluation Of Yingcheng Formation Southern Of The Xingcheng Area In Songliao Basin

This paper uses logging data,core description,analysis of test data,logging inter-pretation results,test results and seismic interpretation results.Sedimentary reservoir of member of glutenite and Volcanic reservoir of the first member of the in Yingcheng formationthe sedimentary facies,reservoir characteristics and diagenesis are described.On this basis,the reservoir of the four member of the sedimentary and th volcanic reser-voir of the one member of the Yingcheng formation are evaluated.The following points arerecognized:in the Southern part of Xingcheng,four member of the Ying formation is a gravel braided river delta deposit,the first member is a volcanic eruption accumulation product,but the favorable reservoir is mainly developed in the upper subfacies of the overflow facies.The the southern part of Xingcheng glutenite type reservoir and vol-canic rock type reservoir are mainly microporous throat?0.1?m?,accountingfor about 66%of the total samples,the samples of small pore throat?0.1⁰.25?m?account for 15%-16%,and the throats of large and medium-sized throats are small.In the Ying-cheng formation distributary channel and estuary dam have the best physical properties,the average porosity is 3.1%,and the average permeability is 0.18×10^-3?m².Breccia lava and pore rhyolite have better physical properties of the first member Yingcheng formation,porosity averaged 11.37%and 9.02%,respectively,the average permeability is 1.82×10^-3?m²and 0.284×10^-3?m².Reservoir of four member sedimentary rocks in Yingcheng formation the diagenetic stage shouldbe in the middle diagenetic B late diagenetic stage,volcano rock volcano eruption rocks experienced condensation stage,hydrothermal stage and supergene stage,shallow burial stage and 5 stage deep burial diagenetic stage.The the southern part of Xingcheng four member glutenite reservoir of the Yingchengformation take?₁??₁ reservoir as the main factor,Yc₄?² reservoir is the main producing layerof the four section of Yingcheng formation.Volcanic reservoir of the first member of the Yingcheng formation take?₂??₃ and?₂ as the main factor,hierarchical statistics show that Yc₁?¹?Yc₁?²?Yc₁?¹ is the main reservoir section of gas field,Yc₁?¹ favorable reservoir is the most favorable producing layer of gas field.