日本二区 I 成人黄色免费视频 I 91欧美大片 I 爱爱一区 I 97超碰资源 I 日韩图色 I 91草莓 I 成 人 黄 色 小说网站 s色 I 国产微拍精品 I 午夜精品久久久久久毛片 I 青草草在线 I 人妖一级片 I 网站一级片 I 国产精品99久久免费黑人人妻 I 国产精品99久久久久久久女警 I 亚洲国产视频一区二区三区 I www色亚洲 I 1024你懂的日韩 I 亚洲欧美日韩在线一区二区 I 成人激情一区 I 国产精品极品白嫩 I a4yy欧美一区二区三区 I 性生交片免费无码看人 I 97精品国产97久久久久久 I 外国成人在线视频 I 欧美性孕妇重口 I 欧洲色窝 I 欧美18v69

Language EN▼
News Center
NEWS
Talk about several aspects that need to be paid attention to during the drilling process of water well drilling rigs
Date：2021-05-11 Page View：11054

The drill bit plays a pivotal role in the drilling process of water well drilling rigs. The quality of a drill bit directly affects the efficiency of water well drilling and the quality of the hole, so we need to pay attention to the selection and use of the drill bit. During the drilling process, the operator should pay attention to the drilling usage of the drill bit to make the drill bit better for production operations. Several aspects that need to be paid attention to in the drill bit of the water well drilling rig: 　　


   1. After the drill bit of the water well drilling rig is drilled into the structure, the center drilling tool needs to be replaced in time. First, the bottom of the hole needs to be cleaned, and then the residue at the bottom of the hole is blown clean. The tool is slowly lifted up, and it is most suitable when the lifting force is just enough to lift the drill tool.　　

 

   2. The drill bit of the water well drilling rig is summarized during the drilling process. It is also necessary to pay careful attention to the follow-up situation of the casing, to understand the specific situation in the hole in time, and keep the hole clean in time when necessary, and the drill bit in the water well drilling rig is on the drilling rig. During the process, strong lifting is prohibited.　　


   3. Sometimes there will be more residual slag at the bottom of the hole of the water well drilling rig. The rotating part of the eccentric drill bit will be blocked by the slag, which will affect its gathering production. At this time, it is necessary to deliver compressed air and clean the hole again. , And make the down-the-hole hammer work for a short period of time, and then resume the lifting operation of the center drill.