断陷湖盆隐蔽油气藏勘探方法与实践——以泌阳凹陷为例

Method and Practice of Subtle Reservoir Exploration——By Taking Biyang Depression for Example

海相或陆相盆地(凹陷)隐蔽油气藏勘探成功得益于沉积型或者构造型坡折的存在,而在无坡折型断陷湖盆的隐蔽油气藏勘探处于初步探索阶段。通过在泌阳凹陷的工作,初步探索出了无坡折型断陷湖盆隐蔽油气藏勘探的方法和技术,该方法和技术以层序地层学“点线面体面线点”的研究思路为主线,以地震解释技术、三维可视化技术、测井约束反演技术为手段,通过宏观和微观的结合,地震地质的相互验证,最后结合成藏条件分析进行隐蔽油气藏预测。

The success of subtle reservoir exploration in marine and continental basin (depression) is because of the existence of sedimentary and structural slope breaks, while it is at initial stage in the fault basin without slope break. Through a study of Biyang Depression, methods and techniques are established for exploration of subtle reservoirs in the fault and lake basins without slope break. The methods and techniques are based on principle of “point-line-plane-body-plane-line-point” of sequence stratigraphical study, the subtle reservoirs are predicted in combination with the conditions of hydrocarbon accumulation, of which the integration of microscopic and macroscopic seism and geology is deployed by means of seismic interpretation; 3D visualization and log constraining inversion.