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

Release time:

2019-09-21

Author:

Source:

(1) The tooth shape does not match the lithology of the formation, and the technetic fault

(2) The bottom of the well is not clean and there are metal falling objects.

(3) Unreasonable operation, slippery drilling, sudden drilling or too much WOB

(4) loading and unloading or going down the well accidentally knocked bad

(5) The quality of the teeth itself is poor.

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