低伤害缓速深部酸化工艺在濮城油田的应用

濮城油田沙二下油藏属于多油层非均质油藏。在长期的注水开发过程中，注水井油层近井地带均受到堵塞、结垢、污染等伤害，严重制约油田的高效开发。针对此问题，我们运用降压增注技术，通过在井网注采关系完善区。选择在生产过程中由于污染、结垢、堵塞造成注水量下降或注水压力上升的水井，整体实施，收到良好效果。该工艺不仅能达到较好的降压、增注的目的，而且有效期长，是改善非均质油层注水开发技术的主要措施之一，具有广泛的应用前景。

Application of the deep department acidification craft with low injury and slow speed in Pucheng oil field

Most of the sand two oil reservoir in Pucheng oil field belongs to uneven oil reservoir.In thelong-term developing injection well oil reservoir near the well area was plugged scaled and polluted. Itrestricted the high-efficient development of the oil field seriously. Facing the problems we used decreasingpressure and increasing water injection technologies to the wells that had decreased injection waterquantities or had increased injection pressures because of pollution,scale and plug in the area where thewell nets relations between the injection and the production were perfect.This craft can not only achievebetter depressurization, and increase injection, but also the term of validity. It is a main measure forimproving uneven oil reservoir and has a good application prospects.