How to Improve The Service Life of Diamond Bits

With the rapid development of modern industrial technology, diamond has increasingly become an important industrial raw material, widely used in metallurgy, coal, petroleum, machinery, optical instruments, electronic industry and aerospace technology. In recent decades, artificial diamond has developed rapidly, and its multi-purpose performance and low price are opening up more fields of use. At present, small diameter diamond drilling is an effective method to greatly improve drilling speed and engineering quality and shorten exploration cycle.

Evaluate the use of diamond drill bit, mainly to see the drilling speed, drill bit into the footage and unit footage, diamond consumption, etc.. At present, drillers should aim to increase the bit feed and reduce the cost per meter of drill bit. In order to improve the service life of diamond bits, the following steps should be noted.

Observe the rules and regulations

The operation requirements of diamond bits are generally as follows.

1) The three technical parameters of drill weight, speed and pumping volume should be reasonably coordinated.

2) It is prohibited to use the drill bit when it appears abnormal.

3) The mating clearance of the inner tube, short cut and spring seat of the drilling tool should be appropriate.

4) The drilling tools should have good single-action performance, good concentricity, intact fillets, no damage and no bending.

5) The drilling tools should not be allowed to go directly down to the bottom.

6) Keep the bottom of the hole clean.

When the core is obstructed and the penetration rate plummets, the inner pipe must be lifted or the drill bit must be installed.

Reasonable selection of parameters

1) Before the new bit is put into the hole, the outer diameter of the reamer should be properly matched, and the inner diameter of the bit should correspond to the diameter of the core.

2) The size of drilling technical parameters should be adapted to the rock formation to be drilled and adjusted according to the consumption of unit bit feed.

3) The dirty emulsion detergent should be frequently replaced with clean emulsion. Punching should be done before drilling to reduce bit wear and lubricate the drill pipe.

4) Selection of drill bits: In addition to the selection as specified, special attention should be paid to the use of bits with a casing hardness of about HRC45 to 50 for broken formations and softer casing hardness and fine mesh or fine grain table insert bits for slippery formations.

5) Observe the pressure gauge of the drilling rig frequently and insist on using the pump pressure gauge, power current gauge and power sound to grasp the situation in the hole and adjust the drilling parameters in time.

6) Adopt rope coring drilling technology to reduce the wear and tear of the drill bit scanning the hole, the damage of the screw falling off and the chance of collision with the hole wall.

The above situation shows that there is still a great potential to improve the diamond drill bit feed, we HANGHUA will further practice in the future work, master and apply its laws in order to give play to the greater advantages of the diamond drill bit as soon as possible.