关键词: 东濮凹陷, 深层, 温压异常, 烃源岩, 热演化异常, 生烃潜力

Abstract: By using oil and gas generation theory,the abnormal phenomena during thermal evolution of hydrocarbon source rock in the deep formation of Dongpu Depression were discussed.It is indicated that the thermal evolution extent of hydrocarbon source rock at abnormally high pressure is not match with its thermal history undergone and is lower than that under the normal pressure condition.The anomalous phenomena occurred only at a certain threshold of the formation pressure factor.When the pressure factor is more than 1.5 in Dongpu Depression,there happens an obvious abnormal phenomenon.The hydrocarbon source rock in deep formation of Dongpu Depression shows that there still has a great source potential and will generate enough oil and gas for forming deep reservoirs.A comprehensive analysis on flow phase of hydrocarbon-bearing fluid,reservoir characteristics and the sealing of cap rock in deep formation shows that there is a good exploration future in the deep formations of Dongpu Depression at the abnormal temperature and pressure.

Key words: Dongpu Depression, deep formation, abnormal temperature and pressure, deep hydrocarbon source rock, abnormal thermal evolution, source potential