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针对中原油田低渗透低产油气藏特点 ,开展了酸化压裂一体化技术的研究和应用。通过压前非常规酸化预处理 ,清除油气层开发过程中各种离子沉淀对地层造成的污染和施工过程中可能造成的粘土膨胀和运移 ,采用低浓度变粘度压裂液、不同支撑剂粒径组合、高砂比、裂缝强制闭合等技术措施 ,取得显著的增产效果 ,且延长了压裂有效期。
Aiming at the characteristics of low permeability and low production reservoirs in Zhongyuan Oilfield, the research and application of integrated technology of acidizing and fracturing are carried out. Pre-press unconventional acidification pretreatment, clear the formation of oil and gas during the development of a variety of ionospheric pollution caused by the formation and the construction process may cause clay expansion and migration, the use of low concentrations of variable viscosity fracturing fluid, different proppant tablets Diameter combination, high sand ratio, forced closure of fractures and other technical measures to achieve significant stimulation effect and extend the effective period of fracturing.