Based on the theory of gas hydrate geological system,gas hydrate accumulation conditions of Shenhu prospect are studied.The results indicate that there are excellent gaseous hydrocarbon source sub-system and gas-bearing fluid migration sub-system.The gas hydrate in this area is proved to be a mixture of biogenic gas and thermogenic gas and the hydrocarbon potential of the source rock is high;faults,gas chimneys,and detachment surface constitute the dominant migration pathway for the hydrocarbon to migrate h...