Data on all drilied wells were analyzed for comparison of the effect of different bit types,weight on bit,and ro-tary speeds on the penetration rate in the various formations and depth *** was initiated in an attempt ...
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Data on all drilied wells were analyzed for comparison of the effect of different bit types,weight on bit,and ro-tary speeds on the penetration rate in the various formations and depth *** was initiated in an attempt to im-prove penetration rates and reduce per well drilling *** on this study,an optimum bit selection,bit weight androtary speed program was incorporated into drilling plans for subsequent wells drilled in the *** of this studyresulted in significant improvement in penetration rates,in spite of the fact that some adverse conditions existed,such asformations,which have been pressure depleted by production,and drilling of high angle holes.
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