Rob Ixer wrote:
> I thought the barytes in drilling mud was to increase the density of the
> mud so that the rock chippings would float to the surface -so that the
> strat. of the drill could be discovered- rather than being a lubricant.
>
I believe that the high density of the drilling mud is required to
provide a high hydrostatic pressure in the drill bore to prevent the
sids of the bore closing in during drilling
Rod Goslin
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