How to operate the PDC drilling bit ?

A. The hole preparation
a）Make sure the hole is clean and no any junk
b）Run previous bit with junk basket if junking anticipated

B. PDC Bit Preparation
a）Remove bit from packing box
b）Stand bit on wood or rubber cushion - not on steel decking
c）Record bit number
d) Inspect bit for damage
e) Screw up proper bit nozzles according to drilling engineer's design
f） Check inside of bit clean and junk free

C. Making up the bit
a）Clean and grease the pin and box
b）Fit bit breaker to bit and engage latch
c）Fit bit breaker in rotary table
d）Torque up with Recommended torques

D. Tripping in
a）Approach casing shoe/obstructions cautiously
b）Ream tight spots - see reaming
c）Last joint - wash to bottom
d）Tag bottom gently with full flow and low RPM）
e）Circulate for 5 minutes

E.Reaming
a）Reaming under - gauge holes are not Recommended - only tight spots）
b）Full flow
c）Low WOB - 1/10 max. WOB
d）Maintain a low ROP and high RPM
e）Avoid high torque

F. Drilling in
a）Low WOB to drill first foot - cutting profile
G. Making connection
a）Full flow until Kelly up
b）Making connection
c）Record pressure on and off bottom
d）Check pump strokes
H. Drilling ahead
a）Find optimum drilling parameter for each formation within
Recommended limit - by varying - WOB - RPM - flow，Do not set and forget）
Soft formations - High ROP increases risk of plugging
Hard stringers - Reduce RPM to avoid overheating
Limit WOB - high WOB shortens bit life
b）Survey - Regular survey recommended

I. Unplugging
a）Blocked waterways - increase in pressure difference off
and on bottom
- Kick brake
- Maintain full flow
- Maintain rotation
b）Blocked nozzles - increase in pressure drop off and on bottom
- Circulate for 5 minutes
- Raise Kelly，allow to fall rapidly - avoid surge
- DO NOT drop bit on bottom
Far Eastern Drilling are China factory of PDC bits,Tricone drilling bits, core bits, Hybrid bits,Diamond bits,Hole opener,HDD drilling bits which used for oil/gas well drilling,mining well, geothermal well drilling,geological survey,hydrographic survey,water well drilling ,HDD pipelines projects and foundation projects.
Our website is www.chinafareastern.com
Our company’s video are as following:
https://www.youtube.com/channel/UCPXTEjkf30VP44_S6-vZ3bw