滩坝储层是一些油田增储上产的重要领域之一,滩坝砂岩单层厚度薄,横向变化快,分布规律复杂,勘探难度非常大。本文通过对车镇凹陷沙二段滩坝进行调研,研究了滩坝砂岩的沉积特征并分析了沙二段滩坝沉积主控因素,对油气藏勘探具有重要理论意义与现实意义。 The beach dam is one of the important fields for oilfield production increase and production. The sand dam of the beach dam is thin in thickness, rapidly changing in lateral direction and complicated in distribution, and the exploration is very difficult. In this paper, we investigate the sediment characteristics of beach sand bar in Chezhen Sag of CheZhen Depression and analyze the main sedimentation controlling factors of sand bar and dam in Shahejie depression, which has important theoretical and practical significance for exploration of oil and gas reservoirs.