利用流体包裹体研究油藏注入史

Application of Fluid Inclusions to the Study of Oil Reservoir Filling History

油藏注入史分析是一项非常有价值的研究工作，综合利用自生包裹体测温和包裹体中烃类组成特征，结合成岩史、流体史和烃源岩热演化史分析资料，可有效地指明石油向油藏注入的时间、方向和期次，从而建立烃类的成藏模式．这项研究工作对于多期构造运动和多期油气成藏的复杂油气探区具有更加宝贵的实用价值，尤其是将流体包裹体分析技术和精细时—温埋藏史恢复的盆地模拟技术相结合来研究复杂油气探区的油藏注入史。

Primary fluid inclusions in diagenetic minerals are widely used to determine the time of oil reservoir formation,oil expulsion,migration,history of subsidence and uplift and geothermal gradient.By measuring the homogenization temperatures of fluid inclusions in cements,the duration and age of paleopetroleum filling of the reservoir have been successfully reconstructed by modeling the subsidence and thermal history of a basin.In Minhe Basin,the geological history is complex.Subsidence and sedimentation continued from the Early Jurassic to the Early Cretaceous.This was followed by regional uplift and then by late Cretaceous to late Tertiary Subsiding.Jurassic sandstones were buried to their maximum depth in the late Tertiary and then was followed by uplift.The primary fluid inclusion data indicate that the petroleum fillings of the Upper Jurassic reservoir occurred in the ages of about 100 Ma and 14 Ma respectively.And the results are quite consistent with that determined from organic maturity data.So homogenization temperature and inclusion composition are very useful for the determination of the petroleum reservoir filling history by modeling burial and thermal history.