安塞特低渗透长6储层整体暂堵重复压裂技术

安塞油田采用注采同步开发，在注水开发过程中，由于部分区块微裂缝发育或地层堵塞，存在地层压力上升，老井低液面、低流压、采液和采油指数下降，常规重复压裂效果不理想。为提高单井产量，保持油田长期稳产，通过多年的不断试验与探索、发展与完善、总结与认识，工艺逐步突破，研究出了适合安塞油田地质特征的裂缝暂堵复压工艺及选井选层标准，取得了较好的经济效益，为特低渗透油田高效开发提供了技术对策。

Technology of Entire Temporary Blocking and Refracturing for Lower Permeability Reservoir of Chang 6 in Ansai

Ansai oil field is synchronously developed by water injection.In the development of water injection,since some microcracks development or formation is pluged,the formation pressure increases,the historical wells' fluid level and flow pressure both are low,moreover,fluid productivity index and productivity index decrease,the effect of conventional refracturing is not satisfactory.To enhance the single well production,and to maintain long-term stablely producing,through years of continuously testing and explo...