钻井液用GX—1硅稀释剂的合成及应用

Organo-silica Thinner GX -1 for Drilling Fluid

为克服现有无铬稀释剂稀释效果比FCLS差的问题,合成了GX—1硅稀释剂,并进行了室内试验和现场应用。结果表明,GX—1硅稀释剂稀释能力强,在钻井液中加量为2％时,稀释率达80％以上,抗温150℃以上。有良好的抗盐污能力,有显著的抑制泥页岩膨胀分散的效果。它与GW—1复配使用时,稀释效果基本上与FCLS相当,可作为钻井液降粘切稳定剂和聚合物不分散泥浆的泥饼改善剂。

To overcome the poor thinning ability of chromium free thinner , organo - silica thinner GX-1 is prepared . It is prepared by lignite , organo - silica , sulfonating agent . It can be used at 150℃, and possesses excellent salt tolerance and inhibiting property .