ABSTRACT This paper contrasts the results of centrifuge capillary pressure measurements determined at ambient and overburden pressures. The effects of centrifugal forces and overburden pressure on the integrity of well consolidated uniform rock samples are minimal. However, unconsolidated sands, poorly consolidated sandstones, and friable cores are susceptible to deformation and grain re-arrangement, while vuggy cores are susceptible to surface drainage. The severity of these occurrences, which depend on sample lithology and the magnitude of centrifugal forces, can be minimized or avoided by proper jacketing and application of overburden pressure.