随着有机地球化学的发展,对油气形成的研究工作日益深入。近年来,许多研究工作者对沉积成岩作用后期随着埋藏深度的增加,在增高温度和压力的作用下,有机质向油气的演化机理进行了深入的研究,并取得了一些有益的成果。本文着重于从有机地球化学方面开展这一研究课题,探讨古生界油气的形成与演化,为含油远景评价提供一个有益的 With the development of organic geochemistry, the research on the formation of oil and gas has become more and more in-depth. In recent years, many researchers have studied the evolution mechanism of organic matter to oil and gas with the increase of burial depth at the later stage of sedimentary diagenesis under the action of increasing temperature and pressure. Some beneficial results have been obtained. This paper focuses on the research topics from the organic geochemistry to discuss the formation and evolution of Paleozoic hydrocarbons and provide a useful