CAJ | 학술논문

基于护壁材料对浆液的流变性和失水及造壁性的影响，通过室内试验，研究了适用于煤系复杂地层的护壁浆液--膨润土-高聚物浆液。采用正交试验法得出护壁浆液的优化配方：5%膨润土+0.3%SM 植物胶+0.04%聚丙烯酰胺(PAM)+1%腐植酸钾(KHm)。将这种高聚物低固相泥浆用于现场试验，在煤系复杂地层的钻探护壁中取得了良好的效果。
기우호벽재료대장액적류변성화실수급조벽성적영향，통과실내시험，연구료괄용우매계복잡지층적호벽장액--팽윤토-고취물장액。채용정교시험법득출호벽장액적우화배방：5%팽윤토+0.3%SM 식물효+0.04%취병희선알(PAM)+1%부식산갑(KHm)。장저충고취물저고상니장용우현장시험，재매계복잡지층적찬탐호벽중취득료량호적효과。
Starting from the point of view to solve the difficulties of drilling, the paper studies the well wall pr o-tecting slurry in coal-bearing complex formation. Through the indoor test study of bentonite-polymer slurry system, then adopting the method of orthogonal test, the optimization formula of wall-protecting slurry was obtained. Fi-nally the slurry of high polymer of low solid phase was used in field test, achieved good results in well wall pro-tection during drilling in coal-bearing complex formation.