Points above the introduction of drilling technology for geological drill pipes

Classification:

Company News

Release time:

2019-08-26

【Summary Description】 Points above the introduction of drilling technology for geological drill pipes

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geological drill pipeWhat checks should be made before the drill bit is drilled?

Answer:

(1) Check the screw thread and shoulder for damage

(2) Check whether the cone bearing is in good condition

(3) Check whether the teeth are in good condition and whether there is bite

(4) Check whether the installation of water eye is reasonable

(5) Check whether the buckle type is consistent with the mating joint.

geological drill pipeofHow to judge that the cone is stuck during drilling?

Answer: When the bottom of the well is clean and the downhole conditions are normal, the load of the rotary table will increase during pressurized drilling, the torque gauge will increase, and the rotary table will reverse. The drill bit will be pulled away from the bottom of the well and rotate normally.

How to judge that the cone has shaken during drilling?

Answer: Under the condition that the clean borehole at the bottom of the well is normal, intermittent bouncing and jumping will occur during pressurized drilling. The load of the rotary table is light and sometimes heavy. The torque gauge shows ups and downs. The jump is irregular. The rotary table is generally bouncing and strong, but it does not reverse. The drill bit is raised from the bottom of the well and rotated normally.

geological drill pipeWhat are the reasons for tooth breakage after the drill bit is taken out?

Answer:(1) the shape of the tooth does not match the lithology of the formation, the technetic fault (2) the bottom of the well is not clean and there are metal falling objects (3) the operation is unreasonable, the drilling is slippery, the drilling is stopped or the drilling pressure is too large (4) the loading and unloading or the downhole is accidentally damaged (5) the quality of the tooth itself is poor.

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Key words:

weilida drill