... of downhole and surface facilities and transportation systems. The routine practice in industry is fluid sampling from the reservoir and using laboratory measured viscosity values for various design purposes. However, there are cases where such direct measurements are not available. Therefore, as a common...

... operations. This means that viscosity values obtained from wellhead oil samples must be used carefully and should be analyzed in order to ensure that they are truly representative of the oil viscosity in the formation. Measurements on bitumen that has been extracted from core samples are generally more...