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桃园构造位于辽河断陷盆地东部凹陷的南部，形态为一完整的断裂背斜，面积４０ｋｍ＾２。通过对该区浅层天然气藏的构造地质特征，储层地持特征的综合评价和分析研究，认为桃园构造形成于下第三纪沙三晚期，东营未期趋于完善，二界沟深大断裂控制了本区的构造格局和沉积类型，中，深断层是油气油浅层运移的通道；另一方面，该区东营组以泛滥平原河道砂体沉积为主，纵向上不连续，平面上可多期叠加连片，储层颗粒相对较细，分选及磨圆

THE EXPLORATION AND DEVELOPMENT OF SHALLOW GAS IN TAOYUAN AREA OF LIAOHE BASIN

??Taoyuan structure with a morphology of complete faulted anticline and 40 km² is located in the south part of east sag in Liaohe rift-subsidence. Through comprehensively evaluating and analysing the characteristics of structure geology and reservoir geology of the shallow gas the area, it is considered that Taoyuan structure was formed in the later period of Es₃ of Lower Tertiary and finished in the end of Dongying period, the tectonic framework and sedimentation type in the area are controlled by Erjiegou deep-large rupture,middle-deep faults are the migration passage for oil-gas to the shallow. Otherwise,Dongying formation is mainly the sandbody sedimentation of flood plain river channel. not continuing in vertical direction,multistage superimposed connection in horizontal direction, with the characteristics of smaller reservoir particles,general-better sorting and roundness,point contact among particles,great change in horizontal direction,worse communication,high porosity and permeability,most of the burial depth of gas bearing is <1400m, distribution controlled by ruptures and three types of gas reservoirs with structure, structure-lithology and lithology. So different measures should be used to the different gas reservoir to reduce cost and rise exploration benefits.