The present study proposes, through the coupling of a linear filtration formulation (lab configuration) and a radial single phase formulation (wellbore vicinity), to predict fluid invasion depth of drilling fluid filtrate in the reservoir rock. Modeling is validated with linear and radial lab tests as well as with resistivity logs run in offshore wells from Campos basin.

The proposed methodology is a requirement for optimum drilling fluid design to be used in the drilling of reservoir sections in both exploratory and development wells in Campos Basin, offshore Brazil.

Keywords:
experimental data, permeability, invasion, viscosity, reservoir fluid, drilling fluid property, filter cake permeability, drilling fluids and materials, fluid invasion, drilling fluid formulation
Subjects:
Drilling Fluids and Materials, Formation Evaluation & Management, Drilling fluid selection and formulation (chemistry, properties)
Copyright 2004, Society of Petroleum Engineers
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