anti-balling procedures

Happy 2017 all!

Have had reported some symptoms of bit balling (low tq, poor ROP response to WOB) whilst drilling a proven unreactive shale (!?) using high performance WBM (c/w 1% K Silicate), 4000m, high mw/overbalance for BHS. Limited/No accretion visible on bits at surface.

1. Is this possible?

2. What anti-balling practises do you all use?
     A. pills?
     B. additives?
     C. drilling practises/equipment to drill through or shake off?

I note the below interesting discussion on sodium silicate muds can cause sticky cuttings:
http://my-spread.com/discussions/4968

9 Answer(s)

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