在松散、破碎、膨胀、缩径、坍、掉、漏、涌等复杂地层中钻进,为了维护孔壁的稳定和冲洗液的正常循环,实现安全生产,常用泥浆作冲洗液.在岩芯钻探中,一般采用粘土、水、化学处理剂所组成的水基泥浆. 我队采用泥浆钻进已经多年,但由于过去缺少测试仪器和深入研究,只注重粘土和化学处理剂的性能,而忽视了水质对泥浆性能的影响.近年来我们发现:同一种粘土用自来水(淡水)造浆和用矿化水(钻探现场用水)造浆,两者性能不同.用矿化水配制的原浆比自来水配制的原浆,失水量要高得多,见表1.过去我队一般采用烧碱 In loose, crushing, expansion, diameter reduction, slump, loss, leakage, Chung and other complex formations in the drilling, in order to maintain the stability of the hole wall and the normal circulation of flushing fluid, to achieve safety in production, commonly used as a flushing fluid in the core In drilling, water-based mud consisting of clay, water and chemical treatment agents is commonly used, and our team has been using mud drilling for many years. However, due to the lack of testing instruments and in-depth research in the past, only the performance of clay and chemical treatment agents was neglected In recent years, we found that: the same clay with tap water (fresh water) and the use of mineral water (drilling site water) pulp, the performance of both different with mineral water prepared from the pulp ratio Tap water preparation of the puree, the loss of water is much higher, see Table 1. In the past I generally use caustic soda