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近年来,随着我国油田研究工作的进展,逐渐认识到油气储层多与三角洲沉积有关,如大庆油田的储层即为早白垩世大型湖泊三角洲复合体。为进一步探讨这类油田的沉积规律,很多研究者应用“将今论古”的方法,即研究现代湖泊三角洲沉积相,藉以提高识别古代沉积环境的能力,从而指导油气勘探工作。
In recent years, with the progress of oilfield research in our country, it is gradually realized that the oil and gas reservoirs are mostly related to delta deposition. For example, the reservoir of Daqing Oilfield is the delta of the Early Cretaceous lakes. In order to further investigate the depositional law of these fields, many researchers apply the method of “present-day ancient” to study the sedimentary facies of modern lakes and delta in order to improve the ability of identifying the sedimentary environment in ancient times and guide the exploration of oil and gas.