Device and method for simulating dominant migration direction of periphery of oil generation pit

The invention relates to a device and method for simulating the dominant migration direction of the periphery of an oil generation sag, the device comprises an injection structure and a two-dimensional seepage model for simulating hydrocarbon expulsion of the sag which are connected with each other, the two-dimensional seepage model comprises an upper glass plate and a lower glass plate, and the peripheries of the upper glass plate and the lower glass plate are separated by hard sponge strips; the gap is divided into a hydrocarbon source rock high-permeability zone, a hydrocarbon source rock hydrocarbon discharge zone, a conduction layer and a mudstone zone through adhesive tapes, and the two ends of the conduction layer in a sectional view of the conduction layer both extend towards the inclined upper portions of the left side and the right side and reach the edges of the two-dimensional seepage model respectively; the hydrocarbon source rock high-permeability zone is located in the middle of the lower porti