目前在水文、水井成井工艺中存在的问题是:卵石地层钴进效率低,钴具回转阻力大,消耗钻头多。钴穿复盖层,护壁管下不到底,钻进中在护壁管外串通冲洗液,引起护壁管周围坍塌甚至无法继续工作。成并后洗井已达到水清砂净的程度,但出水量不够,同邻井相比水量相差悬殊。就上面这些问题分别叙述谈点个人分析体会。 Currently in hydrology, wells in the process of existing problems are: cobblestone into cobblestone low efficiency, cobalt turning resistance, consume more drill bit. Cobalt wear cover layer, under the protection of the tube is not in the end, drilling in collusion tube collusion rinse liquid, causing the collapse around the tube wall can not even continue to work. After the merger and wash wells have reached the level of clear water sand, but the amount of water is not enough, compared with the adjacent wells water disparities. On the above problems were described on the point of personal analysis.