摘要
以沾化凹陷为例,采用地层原油物性菱形图对凹陷内的油藏流体高压物性数据进行综合分析,研究了PVT参数在纵向和平面上的变化规律,并对其主要影响因素进行了深入分析。研究结果表明:原油在地下运移过程中,随着运移距离的增加,地层油的密度和粘度逐渐增加,地层流体的饱和压力和气油比会相应的降低,菱形图的形状会随着运移距离的增加发生规律性变化,由此可以根据地层原油物性菱形图的相对变化确定出济阳坳陷油气运移的方向和距离。
By taking Zhanhua Sag as an example, the PVT data of reservoir fluids were overall analyzed by using rhombic figure describing physical property of formation crude. The results indicate that with the longer travel distance in the migration process, the density and viscosity of crude oil gradually increases, but the saturated pressure and gas/oil ratio of reservoir fluid decreases. The results also show that the shape of rhombic figure regularly changes along with longer travel distance. The migration direction and distance of hydrocarbon can be determined according to the changing pattern of rhombic figure describing physical property of formation crude oil.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2009年第3期255-257,共3页
Journal of Oil and Gas Technology
