Sand production during the extrusion of hydrocarbons from geological formations: A review

摘要

The petroleum industry spends millions of dollars each year to prevent and overcome sand control problems and their prediction has therefore become essential to minimize the adverse effects of sand production. This paper reviews existing experimental and modelling studies of the prediction of sand production. In experimental studies, the trapdoor system has been commonly used. The early experimental set-ups had a simple trapdoor configuration with a fluid inlet port to inject a single fluid to conduct qualitative tests. Other facilities were added over time, including facilities to conduct qualitative and quantitative tests, inject radial, axial and multiphase fluids and conduct tests in uniaxial and tri-axial stress environments. Experimental findings on sand production can be categorized into four different effects: the flowing fluid characteristics effect, the material characteristics effect, the loading effect, and the outlet size effect. However, the application of laboratory findings to field conditions has become doubtful due to the various assumptions used in laboratory studies, including the scaling down of the reservoir, the use of sieved river sands and/or synthetic samples, and the use of limited combinations of two-phase flows.