关键词: 大庆, 油田, 地质, 沉积, 突破

Abstract: This article presents an important breakthrough in the geological study that changed the geological work of Daqing Oilfield and resulted in continuous progress of exploration and development in 1970s. Based on the in-depth study of lithofacies palaeogeography the new theory is confirmed that “Daqing Oilfield is the large-scale lake basin river-delta sedimentation facies in terms of sedimentology.” Abandonment of the traditional “flood basin theory” solved a number of bottlenecks in production of the oil field. This article provides a panorama of this process, such as the objective environment and subjective factors. It also briefs about a complete set of study methods for detailed division of sedimentary facies, which has played an important role in development and production of Daqing Oilfield as well as other oilfields nationwide.

Key words: Daqing, oilfield, geology, sedimentation