EXPERIMENTAL SIMULATION OF “PHYSICAL PROPERTY-FLUID POTENTIAL”CONTROLLING THE OIL ACCUMULATION IN SAND LENS
Received date: 2006-11-02
Revised date: 2007-03-08
Online published: 2008-06-20
Physical properties and fluid potential are two important factors in the formation of sand lens reservoirs. Based on the two-dimention physical experiment, the paper studies the fluid potential and the interrelations between physical property, fluid potential and accumulation of sand lens. The results of the experiments show that oil always moves from high potential to lower one, and fluid potential determines whether sand lens can be input by oil or not. The oil saturation of sand lens reservoir varies consistently with the change of the porosity and ermeability. The sand lens in the lower potential district is more prone to form oil reservoirs than that in high potential district. Moreover, the bigger the fluid potential difference between the sand lens and that of surroundings, the higher the oil saturation of sand lens.
Key words： Sand lens; Experimental modelling; Fluid potential
MA Zhong-liang;ZENG Jian-hui;WANG Hong-yu . EXPERIMENTAL SIMULATION OF “PHYSICAL PROPERTY-FLUID POTENTIAL”CONTROLLING THE OIL ACCUMULATION IN SAND LENS[J]. Natural Gas Geoscience, 2007 , 18(3) : 347 -350 . DOI: 10.11764/j.issn.1672-1926.2007.03.347
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