Flow efficiency of perforated systems – a combined analytical and numerical treatment

摘要: The effect of the spatial distribution perforations on flow from reservoir to wellbore for single phase liquid is studied. taken be isotropic and, most paper, model used here assumes that and are both undamaged. Thus, there no change permeability around perforations. pressure/flow along a perforation studied in detail first an integral equation derived which can solved numerically give everywhere perforation. interaction considered by approximation each represented point source unknown strength positioned at centre A simple ellipsoidal also provides faster approach evaluating flow. resulting flux fluid into presented above-mentioned approximate methods comparison with full numerical method made. For perforation, modelling skin (a mathematical treatment pressure drops caused damage) described, but detailed results given.