The Effects of Weight Material Type and Mud Formulation on Penetration Rate Using Invert Oil Systems

Rupert, J.P.; Padro, C.W.; Blattel, S.R.

doi:10.2523/10102-ms

Proceedings of SPE Annual Technical Conference and Exhibition 1981

DOI: 10.2523/10102-ms

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The Effects of Weight Material Type and Mud Formulation on Penetration Rate Using Invert Oil Systems

J.P. Rupert¹,

C.W. Padro²,

S.R. Blattel³

Abstract: The penetration rates of invert oil mud systems in Mancos Shale have been measured using the full-scale wellbore simulator at the Drilling Research Laboratory. Experimental parameters were

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The Effect of Weight Material Type on Rate of Penetration Using Dispersed and Non-Dispersed Water-Base Muds

Blattel¹,

Rupert²

1982

SPE Annual Technical Conference and Exhibition

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The penetration rates of dispersed and nondispersed water-base muds were studied using Mancos Shale. The full-scale wellbore simulator at Drilling Research Laboratory was utilized. Previous studies 1 have indicated that in invert oil muds higher penetration rates can be achieved when the weighting agent is ilmenite rather than barite. This study compares barite and ilmenite in water-base systems. Two grind sizes of ilmenite (fine and standard) were used in order to determine the effects of particle size on penetration rate.

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The Effect of Weight Material Type on Rate of Penetration Using Dispersed and Non-Dispersed Water-Base Muds

Blattel¹,

Rupert²

1982

SPE Annual Technical Conference and Exhibition

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Full-Scale Laboratory Study of the Impact of Drilling Fluid Composition and Properties on Penetration Rates in Brazilian Pre-Salt Carbonates

Curry

Bland

Lourenco

et al. 2013

SPE Annual Technical Conference and Exhibition

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Full-scale laboratory drilling tests investigated the drilling performance potential of a number of different drilling fluids in three analogue rocks for the pre-salt formations offshore Brazil: Bonne Terre dolomite, Carthage limestone, and Navajo Gold travertine. High-pressure drilling tests were performed in each of these rocks using a total of nine different drilling fluids, including a synthetic-based fluid used as reference for performance comparison. There was a consistent ranking of drilling fluids in terms of their penetration rate and mechanical specific energy in all three rocks. Several of the fluids tested showed penetration rates ∼50% higher and mechanical specific energies ∼35% lower than those seen with the baseline synthetic-based fluid. There was no clear correlation between good drilling performance and base fluid, rheology, or suspended solids. There was, however, evidence of a correlation between drilling performance and continuous phase viscosity; drilling performance apparently increased as the continuous phase viscosity decreased. This effect is consistent with a hypothesis that filtrate invasion into the damaged rock can relax so-called chip hold-down forces and thereby reduce their negative impact on the efficiency of the rock destruction process. The results presented here yielded what is believed to be the first evidence that increasing drilling fluid temperature can lead to an increase in penetration rate and a decrease in mechanical specific energy when all other conditions and operating parameters are held constant.

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The Effects of Weight Material Type and Mud Formulation on Penetration Rate Using Invert Oil Systems

Abstract: The penetration rates of invert oil mud systems in Mancos Shale have been measured using the full-scale wellbore simulator at the Drilling Research Laboratory. Experimental parameters were

Cited by 2 publications

References 0 publications

The Effect of Weight Material Type on Rate of Penetration Using Dispersed and Non-Dispersed Water-Base Muds

The Effect of Weight Material Type on Rate of Penetration Using Dispersed and Non-Dispersed Water-Base Muds

Full-Scale Laboratory Study of the Impact of Drilling Fluid Composition and Properties on Penetration Rates in Brazilian Pre-Salt Carbonates

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