CAJ | 학술논문

针对鱼骨型水平井钻井周期较长、储层易被钻井液伤害、通过酸化难以实现彻底解堵的问题，提出了分段布酸酸化技术。采用单级封隔器+5级喷砂器（含4级滑套喷砂器）工艺管柱，实现了一趟管柱分5段逐级布酸酸化；通过实验室岩心溶蚀试验，优选出缓速土酸和清洁自转向酸组合酸液体系；通过提高酸液用量和采用液氮伴注技术，提高了改造效果。在静52-H1Z井成功实施了该项技术，取得了明显的酸化增产效果。试验表明，该技术适用于鱼骨型复杂水平井的解堵改造。
침대어골형수평정찬정주기교장、저층역피찬정액상해、통과산화난이실현철저해도적문제，제출료분단포산산화기술。채용단급봉격기+5급분사기（함4급활투분사기）공예관주，실현료일쟁관주분5단축급포산산화；통과실험실암심용식시험，우선출완속토산화청길자전향산조합산액체계；통과제고산액용량화채용액담반주기술，제고료개조효과。재정52-H1Z정성공실시료해항기술，취득료명현적산화증산효과。시험표명，해기술괄용우어골형복잡수평정적해도개조。
Reservoir is easily damaged by mud as the drilling cycle for ifshbone horizontal wells is very long, and it is very dififcult to solve the problem completely through acidization, so the paper presented this staged acidizing technology. 5-stage acidizing can be achieved by using a one-trip string containing a single-stage packer and 5 sand blasters which contain 4 sliding sleeves sand blasters. Through laboratory core corrosion test, the retarded mud acid and clean self-diverting acid were selected to form an acid system;by increasing the amount of acid and injection of liquid nitrogen, the stimulation effect is improved. This technology was used in Well Jing 52-H1Z and resulted in remarkable acid stimulation effect. The test results show that this acidizing technology is suitable for breaking and stimulating the complex ifshbone horizontal wells.