Condition discriminating method for inclined oil-water interface

The invention relates to a condition discriminating method for an inclined oil-water interface. The method comprises the following steps (1) whether an oil and gas reservoir meets background conditions for forming the inclined oil-water interface is determined; if yes, step (2) is performed; if no, the operation is ended; (2) whether the oil and gas reservoir meets reservoir stratum seepage conditions for forming the inclined oil-water interface is determined; if yes, step (3) is performed; if no, the operation is ended; (3) whether the oil and gas reservoir meets crude oil property conditionsfor forming the inclined oil-water interface is determined; if yes, step (4) is performed; if no, the operation is ended; (4) whether the oil and gas reservoir meets temperature-pressure conditions for forming the inclined oil-water interface is determined; if yes, step (5) is performed; if no, the operation is ended; (5) positive correlation between the oil-water interface Howc and the reservoirstratum structure depth S