Key words: drilling swelling formation, accretion of clay, bit balling, adhesive interaction, sticking the pipe string.
Drilling bit balling leads to a decrease in the rate of penetration and the various emergency situations. Improving of anti-adhesion properties of drilling mud during drilling swelling formation reduces the adhesion of the clay slurry to the surface of the drilling bit. A description of the apparatus, which allows to estimate the ability of drilling mud to inhibit drilling bit balling, is given.
References
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