How to Correct Drilling Method of Water Well Drill Pipe and Diamond Bit

Classification:

Company News

Release time:

2019-08-28

【Summary Description】 How to Correct Drilling Method of Water Well Drill Pipe and Diamond Bit

水井钻杆

For hard formations, only diamond drill bits can be used to drill.water well drill pipeAnd diamond drill bit how to correctly drill into the method, you understand?

First, master."Five no sweeps", that is, no diamond drill is used to sweep holes, sweep residual cores, sweep off cores, sweep off blocks, and sweep probe stones; master the "three must-mention", that is, when the drill is blocked, the light turn is invalid, the core is blocked, and the drilling speed drops sharply, the drill must be raised;

Ifwater well drill pipeand diamond drill bits found during drilling"Slippage", blind pressure forced drilling is not allowed, or instantaneous dry drilling, should immediately lift the drill;

(4) For decompression drilling, straighten the drill string with wire rope and then reverse the rod. After that, lift the drilling tool a little away from the bottom of the hole with an oil cylinder and start it again to prevent the drill bit from being damaged due to sudden rotation under heavy load;

(5) The remaining feet on the machine shall be provided before tripping in, and it is not possible to lift the drilling tool away from the bottom of the hole to lengthen the drill pipe during the re-drilling process;

(6) In complex formation, the drilling tool shall not be lifted too fast, and flushing fluid shall be pumped into the hole at any time to prevent hole collapse caused by "swabbing;

(7) After the new drill bit is emptied, "initial grinding" must be carried out ".water well drill pipeTell you its purpose is: to understand the adaptability of the drill rock formation; Make the lip surface run-in with the bottom of the hole; Wipe off the false size and edges of the drill bit; Exposure the impregnated diamond, etc.

The method is: start light pressure (about normal pressure1/3), slow rotation (about 100r/minz), after the footage is 0.2-0.3m, gradually increase to normal rotation speed. The first time should not be too long, and the drill should be timely raised to observe the wear pattern of the drill bit;

Key words:

weilida drill