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英坨地区位于松辽盆地南部中央坳陷区红岗阶地北端,是近年来油气勘探开发的重点地区之一。通过岩心观察、测井曲线以及录井资料,识别出了研究区青山口组一段、二段、三段发育沉积微相类型。总结了各微相特征,建立了测井相模式,完成了青山口组一段、二段、三段沉积微相平面图,青山口一段、二段、三段沉积微相平面图表明青山口组三角洲砂体不断进积并向北迁移,湖盆中心由东北方向东南方向变化,伴随滨岸线的顺时针迁移,物源方向从青一段到青三段逐渐向北移动。
The Ying Tuo area is located at the northern end of the Honggang terraces in the central southern depression of the Songliao Basin and is one of the key areas for oil and gas exploration and development in recent years. Through the observation of cores, well logging curves and logging data, the types of development sedimentary microfacies of the first, second and third stages of the Qingshankou Formation in the study area were identified. The characteristics of each microfacies are summarized and the log facies model is established. The sedimentary microfacies plan of the first, second and third sections of the Qingshankou Formation is completed. The sedimentary microfacies of the first, second and third sections of the Qingshankou are shown in the chart. The body continued to accumulate and migrate to the north. The center of the lake basin changed from northeast to southeast. Along with the clockwise migration of coastline, the source direction gradually moved north from Qingyi to Qingcai.