This paper summarises the results of extensive laboratory work carried out in recent years to determine the performance of a number of experimental and commercially available lubricants for reservoir applications. The laboratory work included a series of tests to determine formation damage potential in both completion brines and low-solids, water-based reservoir drilling fluids, as well as reduction in friction coefficient.

The testing to evaluate formation damage potential included brine miscibility, greasing and emulsion formation potential, as well as return permeability testing on outcrop sandstone.

Keywords:
lubricant, permeability, drilling fluid selection and formulation, drilling fluid management & disposal, drilling fluid property, turbidity, miscibility, brine, formation damage testing, drilling fluids and materials
Subjects:
Formation Damage, Drilling Fluids and Materials, Formation Evaluation & Management, Drilling fluid selection and formulation (chemistry, properties), Drilling fluid management & disposal
Copyright 2005, Society of Petroleum Engineers
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