无固相冲洗液在深溪锰矿施工中的应用

贵州深溪锰矿普（详）查区钻探钻遇较为复杂的水敏性地层、破碎性岩层，在合理选择好钻探设备、钻进参数和正确操作的前提下，选用PHP-GSP和GPLS植物胶两类无固相冲洗液，有效地预防了钻孔缩径、孔壁坍塌，降低了钻具与孔壁的摩擦阻力，从而达到了预防孔内事故的目的；同时还提高了机械钻速、减少了冲洗液材料运输量，提高了钻探经济效益；此外还具有环保等优点。介绍了PHP-GSP和GPLS植物胶无固相冲洗液的作用机理、配制方法及使用注意事项等。

Application of Solid-free Flushing Fluid in a Manganese Mine of Shenxi

The complex water sensitive formation and broken rocks were encountered in the reconnaissance survey and de-tailed investigation areas of Shenxi manganese mine in Guizhou.On the premise of rational selection of drilling equipments, drilling parameters and proper operation, 2 solid-free flushing fluids of PHP-GSP and GPLS plant gums are used to have effectively prevented borehole diameter shrinkage and wall collapse, the friction resistance between drilling tools and bore-hole wall is reduced to avoid the downhole accident.Meanwhile the ROP is increased with the advantages of less flushing fluid material transfer, improved economic drilling efficiency and environmental protection.The paper introduces solid-free flushing fluids of PHP-GSP and GPLS plant gums about their action mechanism, compound methods and attentions in use.