HQ─1前置液可与水混配成冲洗液，也可与加重材料配成隔离液，应用于油层套管固井144井次，合格率100％，优质率82．6％，比应用前提高了6．6个百分点。实践表明：由HQ─1配制的冲洗液对钻井液无增稠现象，在低速下可达紊流，能很好地冲洗管壁与井壁。配制的隔离液对水泥浆无不良影响，可起到隔离、驱替钻井液的作用，从而提高了顶替效率，提高了固井质量，具有很好的应用前景。 HQ ─ 1 front liquid can be mixed with water into a flushing fluid, but also with the heavier material dubbed the separation fluid, used in wells casing cementing wells 144, pass rate of 100%, high-quality rate of 82.6%, than the application The first increase of 6.6 percentage points. Practice shows that the flushing fluid formulated by HQ-1 has no thickening effect on the drilling fluid and can reach turbulent flow at low speed, which can well flush the wall of the pipe and the shaft wall. The prepared isolation liquid has no adverse effect on the cement slurry and can play a role of isolation and displacement of the drilling fluid, thereby improving displacement efficiency, improving cementing quality and having good application prospect.