文留低渗油藏地质特征对注水开发的影响

Geological Feature and Effect of Water Flood in Complex Block and Low Permeability Reservoir of Wenliu

中原油田文留油田具有复杂断块、低渗油藏的典型特征,埋藏深,构造复杂,储层变化大,物性差,非均质性强。油藏具有异常高温、高压,产量递减快、注水效果差,含水上升快等特点,开发效果差。建议开展合理的注采井距及井网密度、层系划分研究,选择合理的注水时间,开展高压注水等措施,改善开发效果,提高该类油藏的开发效益。

With the feature of deep burial depth,complex structure,great alteration,poor physical property,strong heterogeneity in complex block and low permeability reservoir,Wenliu reservior in Zhongyuan oil field with abnormal temperature and pressure results in rapid decline of production,poor water injection response,rapid increasing water cut.Appropriate measures such as adjusting well spacing density,layer division,injection time and high pressure water injection can improve the production and make more benefits.