A group of industry experts have compiled their years of experiences in developing a new technical standard to measure stimulation and gravel-pack fluid leakoff under static conditions. This method details step-by-step procedure for making fluids and measuring leakoff under static conditions. Stimulation and gravel-pack fluids are defined for the purpose of this technical standard as fluids used to enhance production from oil and gas wells by fracturing or acidizing and fluids used to place filtration media to control formation sand production from oil and gas wells, respectively. The procedure considers filter paper medium, natural core and synthetic core as the three filtering options. The paper also includes step-by-step example calculations of viscosity controlled leakoff coefficient and wall building coefficient.

Keywords:
drilling fluid property, drilling fluid formulation, stimulation, sand control, drilling fluids and materials, standard procedure, gravel-pack fluid leakoff, drilling fluid selection and formulation, drilling operation, heat jacket
Subjects:
Pressure Management, Drilling Fluids and Materials, Well control, Drilling fluid selection and formulation (chemistry, properties), Gravel pack design & evaluation, Sand Control, Completion Operations
Copyright 2007, Society of Petroleum Engineers
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