Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
THE RHEOLOGICAL BEHAVIOR OF DRILLING FLUIDS AT HPHT CONDITIONS: A PROPOSAL FOR A CONSTITUTIVE EQUATION FITTING METHODOLOGY
Submission Author:
Diogo Elias da Vinha Andrade , RS
Co-Authors:
Diogo Elias da Vinha Andrade, LUIS HUMBERTO QUITIAN ARDILA, Admilson Franco
Presenter: Diogo Elias da Vinha Andrade
doi://10.26678/ABCM.COBEM2023.COB2023-2431
Abstract
In this work we performed a rheological characterization of bentonite-free water-based drilling fluid with xanthan gum under high-pressure, high-temperature (HPHT) conditions. The tests were carried out in a rotational rheometer coupled to a pressure cell. Steady-state flow curves were obtained at three temperatures (25, 55 and 100 ºC) for different pressures (100 to 800 bar). Experimental data shows that the effect of temperature on the apparent viscosity of drilling fluid depends on the magnitude of pressure experienced by the fluid, the same is true when one analyses the effect of the pressure that depends on the temperature imposed to the material. Finally, a methodology was proposed to fit an equation capable of predicting the apparent viscosity of drilling fluid under HPHT conditions. The equation showed good prediction accuracy in the fitted range. The proposal outlined in this study provides significant insights for the oil and gas industry, as predicting the rheological behavior of drilling fluid under different temperatures and pressures is critical for efficient drilling plans.
Keywords
HPHT condition, drilling fluid, Rheology, Constitutive equation
