廊坊一固安凹陷、大厂凹陷及霸县二台阶,面积约3500平方公里(图1)。下第三系沙河街组三段、四段地层厚达5000米以上,是本区油气的生储层。开展古生态和沉积环境的研究,为本区的岩相模式和沉积体系、预测有利含油相带的研究提供基础。 Langfang a Gu’an depression, Dachang depression and Pa County, two steps, an area of ​​about 3500 square kilometers (Figure 1). Under the Tertiary Shahejie Formation three sections, four sections thicker than 5000 meters above sea level, is the reservoir of oil and gas in this area. The study of palaeoclimate and sedimentary environment has provided the basis for the study of lithofacies model and sedimentary system and prediction of favorable oil-bearing facies belt in this area.