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胜利滩海青东地区位于郯庐断裂带与济阳凹陷的结合部,受多期走滑运动及拉分盆地的共同作用,呈现为南北双断、东断西超(剥),内部堑垒相间的独特复杂构造格局。现今残留盆地已经与原始沉积盆地面貌存在较大差异,已不能满足沉积特征研究工作的需要。针对青东地区地质特征,采用残留地层厚度法结合构造演化分析有效恢复沙河街各沉积时期原型盆地特征;原型盆地特征认识基础上结合钻井、地震信息建立沉积模式,明确了青东沉积展布特征,预测有利储集相带并指导勘探部署,在凹陷南部发现三角洲前缘沉积并部署青东5-2等井,发现桥东油田。
Located in the junction of the Tanlu Fault Zone and the Jiyang Sag, Shengli Beach in the Qinghai-East region, under the joint action of multi-stage strike-slip movement and pull-apart basin, is characterized by north-south double-breakage, east-west breakage, White and unique complex structure pattern. Nowadays, the residual basin has a great difference with the original sedimentary basin, which can not meet the needs of sedimentary characteristics research. According to the geological characteristics in Qing dynasty, the characteristics of prototype basins in Shahejie depositional period are effectively recovered by the method of residual thickness of strata combined with tectonic evolution analysis. Based on the characteristics of prototype basins, the sedimentary model is established based on drilling and seismic information, , Predicting favorable reservoir facies belts and guiding the exploration and deployment. In the southern part of the depression, it was discovered that the delta front deposited and deployed the Qingdong 5-2 well and discovered the Qiaodong Oilfield.