【摘要】 周长油区位于鄂尔多斯盆地伊陕斜坡中西部，属于吴起油田的重要产区。区块2018年开始注水开发，但是由于低渗低压的砂岩特性，导致水驱效果不佳，生产井产能低，递减快，稳产困难。文章以周长油区10-25井区为研究对象，结合油藏工程的手段，分析区块油藏开发特征，研究区块的油水运移规律，并指明影响产能的主要因素，为低渗透油藏油水运移规律研究提供理论基础与指导方向，对剩余油挖潜和调整部署注采井网具有重大意义。更多还原

【Abstract】 The peripheral oil region is located in the central western part of the Yishan Slope in the Ordos Basin and is an important production area of the Wuqi oilf ield. The block began water injection development in 2018, but due to the low-permeability and low-pressure sandstone characteristics, the water drive effect was poor, the production well productivity was low, the decline was fast, and stable production was diff icult. This paper takes the 10-25 well area of the perimeter oil zone as the research object, and combines reservoir engineering methods to analyze the development characteristics of the block reservoir, study the oil-water migration law of the block, and indicate the main factors affecting production capacity. This paper provides a theoretical basis and guidance direction for the study of oil-water migration law in low-permeability reservoirs, and is of great significance for tapping the potential of remaining oil and adjusting the deployment of injection production well network.更多还原