辽河盆地桃园地区浅层天然气勘探与开发  

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

作　　者：王国勇[1] 张建民[1] 

机构地区：[1]辽河石油勘探局勘探开发研究院

出　　处：《天然气工业》1995年第1期10-13,共4页Natural Gas Industry

摘　　要：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４０ｋｍ２。通过对该区浅层天然气藏的构造地质特征、储层地质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，东营末期趋于完善，二界沟深大断裂控制了本区的构造格局和沉积类型，中、深断层是油气向浅层运移的通道；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，分选及磨圆中等一较好，粒间呈点接触，具高孔、高渗特征，横向变化大，连通性较差。气层埋藏浅，大多数埋深＜１４００ｍ，其分布受断层控制，气藏类型有构造、构造一岩性和岩性气藏三类之分，故应针对不同类型的气藏，采用不同的勘探开发手段，以最少的投入，高效益地勘探开发储量可观的浅层构造气藏。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 ￣got 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<1 400 m, 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.

关 键 词：辽河盆地 浅层气 地质特征 天然气勘探 

分 类 号：P618.130.8[天文地球—矿床学]