摘要
针对华庆油田长6储层提出采用缝网压裂技术进行人工改造,该技术主要指在压裂施工中通过多次加入大粒径石英砂或专用堵剂,提高裂缝内的净压力,使天然微裂缝开启并延伸、沟通,形成人工裂缝与天然微裂缝相结合的缝网系统,从而增加天然微裂缝的渗流能力,扩大油井有效泄油面积,提高单井产量。通过室内工艺的优化和18口井的现场试验表明,采用该技术进行压裂改造后的油井,长期的平均单井日增油量达0.38 t,增产效果显著。该技术的成功实施运用,也为提高超低渗透油藏天然微裂缝发育储层的压裂增产效果提供了有力的依据。
To ultra-low permeability reservoir with natural fracture of Chang6 reservoir in Huaqing oilfield,the ' fracturing network' technique is proposed which depends on the larger quartz particles or Special plugging agent for increasing the net pressure of fractures in the fracturing process. Through this way,the natural fractures are opened and expand,and the network is formed with higher production in oil wells. Through the parameters optimization and field trials in 18 wells,the average single well daily increased oil is 0. 38t,the results is significant. Besides,the success of this technique also provides a strong basis for the stimulation in ultra-low permeability reservoir.
出处
《油气井测试》
2014年第1期52-54,77,共3页
Well Testing
基金
国家科技重大专项"大型油气田及煤层气开发:超低渗透油藏有效开采技术(2011ZX05013-004)"资助
关键词
天然裂缝
缝网压裂
超低渗透储层
缝内净压力
natural fracture,fracture network
ultra-low permeability reservoir,net pressure in fracture
