It is shown that HUC can reduce mud filtration and improve the quality of filter cake .It is compatible with other mud additives .

• 室内及现场试验证明,HUC具有良好的降滤失作用,能改善泥饼质量,减少井下复杂情况,而且与不同的钻井液体系配伍性好,解决了该地区的钻井难题。