辽河油区砂岩油藏注水开发界限研究

Water-flooding Reservoir Screening and Evaluation Criteria for Liaohe Sandstone Reservoirs

辽河砂岩油藏以断块油田为基本特征,地质条件复杂,水驱开发难度大,部分油藏经历多次注水调整仍难有效动用。为此,从开发实际出发,以室内分析测试资料和开发认识为基础,分析油藏注水开发的主控因素及其影响程度,研究各单因素指标的分布规律,并从不同角度优选关键性指标,在分类评价的基础上建立辽河砂岩油藏注水开发界限标准评价体系,进而结合具体油藏的实际数据,采用灰色系统理论综合分析方法重新评价油藏的注水开发潜力,为选择合理开发方式提供依据。

The majority of Liaohe sandstone reservoirs have the feature of fault blocks, which have complex reservoir condition. And that leads to many development problems in water flooding sandstone reservoirs and parts of the reservoirs are difficult to develop after water-flooding adjustments. Based on the lab and in-situ data, this paper aims to analyze the degree and factor regulation of major factors which affects the water flooding performance. After that, the key factors are optimized from different aspects and the water-flooding development potential comprehensive evaluation system for Liaohe sandstone reservoirs are established with meticulous study on water-flooding potential evaluation by Grey System Theory, which lays the foundations for enhance oil recovery for Liaohe sandstone reservoirs.