PETE 348 Lab No. 9 - UNIVERSITY OF LOUISIANA-LAFAYETTE...

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UNIVERSITY OF LOUISIANA-LAFAYETTE Department of Petroleum Engineering VISCOUS CHARACTERISTICS AND CONTROL OF DRILLING FLUID FLOW PROPERTIES Experiment No. 9 PETE 384, Drilling Fluids Laboratory Section 001 Date performed: 3/15/2005 Date submitted: 3/22/2005 Submitted to: Dr. Ali Ghalambor Submitted by: ____________________________ c Team Members: te
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2 TABLE OF CONTENTS I. Abstract 3 II. Introduction 4 III. 5 IV. Discussion 6 V. Conclusions 8 VI. Recommendations 9 VII. Data and Calculations 10 VIII. Appendix 11 IX. References 15
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3 I. Abstract Due to poor quality weight media such as barite, which can be found to have a specific gravity outside the normal range of 4.2 to 4.3 or low quality additives (which may also contain impurities or worse yet, be improperly formulated), the condition of altered drilling fluid characteristics may arise. Excluding contaminants obtained while drilling; the properties of the drilling fluid must never the less be maintained. The purpose of this experiment was to ascertain the changes that may arise when the drilling fluid is treated with additives whose quality is lacking. These studied areas will show how viscosities and yield values of varying additive concentrations affect the sample mud and how changing treatments with decreasing or increasing amounts of barite weight media or viscosity controlling additives. Through observation, it was concluded that treatment with SAPP, the fluids with higher viscosities, as opposed to increasing barite, generated the same shear rate but at a much lower readings. Increasing the amounts of barite after SAPP treatment produced the same shear stress intercept at 0 RPM but changed the slope of the shear stress curves. The Quebracho treatment of the cement-contaminated mud resulted in the shear rate at 600 RPM that remained constant, however, the shear stress curve was changed. The 0.8ppb treatment of Quebracho served to thin the mud and therefore increased the slope of the curve. This study served to illustrate how unknown barite and Quebracho quality affects the shear stress and the shear rate of the drilling as well as the necessity to be aware of these effects before drilling in order to balance the mud characteristics and maintain the necessary fluid characteristics. See Table1 and Table 2 .
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4 II. Introduction During the drilling process, it is necessary to keep the properties of the drilling fluid
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This note was uploaded on 10/27/2009 for the course PETROLEUM 348 taught by Professor Alig during the Spring '05 term at University of Louisiana at Lafayette.

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PETE 348 Lab No. 9 - UNIVERSITY OF LOUISIANA-LAFAYETTE...

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