多期次油气成藏与油气藏成因类型——以吐哈盆地为例

Multi-period petroleum accumulation and formation types of reservoir:Taking Turpan-Hami Basin as an example

目的 探讨遭受强烈构造变形的叠合盆地中油气成藏规律及其油气藏成因类型。方法 基于油气藏形成包括成熟烃源岩、油气运聚、通道和储层空间等因素,从油气成藏历史分析的角度探讨了油气形成的动力作用过程。结果 根据油气藏保存期间被改造或破坏的强烈程度,地质历史时期形成的地质油气藏可以演变成为4种基本的工业油气藏,即原生型、残余型、次生型和复合型工业油气藏。结论 对于构造变动强烈、烃源岩层位多、热演化历程复杂的叠合盆地,其油气藏类型复杂,油气勘探的难度增大。

Aim Accumulation of petroleum and formation types of reservoir have been discussed in superposed basin undergone by the strong structural movement. Methods Based on formation factors of reservoir including mature sotorce roeks,migration and accumulation of oit,channels and alleyways of fluicl,the dynamical process has been discussed by the historical analytic method of resservoir formation. Results The geological reservoir, which was formed during the geological period, could be developed out of four elementary types of industry reservoir based on the reconstructed & destroyed extent during the its preservation. They are original, secondary, residual and mulriple reservoirs. Conclusion The types of reservoir are complex, and the exploration of petroleum is every difficult in the basin of strong structural movement, multi-layer source rocks, complex thermal history.