What are the reasons why the geological drill pipe tells you that it is stuck in drilling in complex formations?

Classification:

Company News

Release time:

2019-08-29

【Summary Description】 What are the reasons why the geological drill pipe tells you that it is stuck in drilling in complex formations?

地质钻杆

Broken wing of the drill bit; the newly replaced drill bit is larger than the original diameter; the machine displacement or drilling tool is deflected in the hole during rock drilling; the hole wall or orifice drops stones or encounters large cracks and karst caves during rock drilling; the dust in the area with mud and stone is not easy to discharge; the operation is negligent; when the drilling is stopped for a long time, the rock powder is not blown clean and the drilling tool is not lifted, so that the impactor is buried by the rock powder;

geological drill pipeTell you the treatment method: according to the current strength of the drill bit, the broken wing has been basically eliminated. in case of special circumstances, a seamless pipe with a diameter similar to that of the hole can be used. the pipe is filled with butter, asphalt and other substances, which are connected with the drill pipe and enter the bottom of the hole. the broken wing at the bottom of the hole is taken out, and the rock powder at the bottom of the hole is blown clean before fishing.

In more serious cases, the drilling tool cannot be lifted, cannot be put down, and the impactor does not sound. At this time, only additional torque or auxiliary tools can be used to help lift the drilling tool to rotate, and then the drilling tool should be lifted while giving gas until the fault is relieved.

geological drill pipeTell you when re-drilling, first add a little pressure, and then gradually increase the propulsion force, until the normal working pressure.

Drill bit fragments, angle drop and column drop: in case of drill pipe jumping, it is possible to drop stones through the exchange place of rock formation changes or drop alloy column. judging from the appearance, if alloy column is dropped, there is almost no footage, and the drill pipe jumping is more rhythmic. When it is confirmed that the alloy column is removed, it can be blown out by strong blowing method. When the alloy column is not moved, it can also be taken by treating the broken wing of the drill bit. If there is a fault or fracture zone in the hole, the hole wall where the alloy column is squeezed into these places may not be taken out, and a new drill bit is replaced to drill the rock intermittently.

地质钻杆

Key words:

weilida drill