Abstract: The advantage of the traditional geologic risk evaluation of hydrocarbon traps is that various geologic factors could be taken into full account and favorable for bringing person's experiences into play, and the shortcoming of it is that the evaluated results could be largely affected by the artificial factor and the data integrality of studied area. Trinity is new software for prediction of geologic risk in hydrocarbon traps and can be used to simulate the hydrocarbon generation and expulsion of source rocks from available geologic data, thus making an evaluation through accumulated hydrocarbon amount in the trap. This method is hardly affected by the data integrality and the artificial factor as reparation of the traditional method. So these two methods should be used together in a low-extent exploration area in order to get more reliable results. For trap evaluation of Binbei area in Songliao basin, these two methods are respectively applied and six favorable traps are selected in this paper, which can be as a guide for further exploration in this area.

Key words: Songliao basin, structural trap, geologic evaluation, risk