松辽盆地南部中浅层正向构造成因、发育史与含油气分析

正向局部构造是油气勘探中的重要钻探目标 .通过分析局部构造成因类型、构造发育史 ,并结合石油地质特征 ,阐述了研究区内不同类型、不同时期构造带的含油气性 .松辽盆地南部中浅层正向局部构造是基底隆起、扭动反转、岩浆底辟作用和差异压实多种机制下形成的 .将局部构造分为长期、中期和晚期 3种发育类型 .基底长期隆起区具有多层位含油气构造 ,断裂扭动形成的反转构造部位是油气富集较有利区

Analysis of the cause of formation and evolution positive structure belts in the middle-shallow Layer for oil-gas in Southern Songliao Basin

The positive local structure is the main aim in the petroleum exploration. The bearing possibility of every kind and different period of the structural belts is discussed by analysing the local structural belt origin, development and regional petroleum condition. It is believed that the positive structural belts in the middle-shallow layer of the southern Songliao Basin resulted from basement high, torsion reverse, magma upheaval and differential compaction. The local structure can be divided into 3 kinds: long-term, middle-term and short-term ones. The long-term basement high area is the multi-layer oil-bearing structure and the reversal structure formed by the fault torsion is the advantageous area of oil-gas accumulation.