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Surface morphology and chemistry of two chokes for oil and gas condensate, which failed by leakage, were related to the flow pattern and material degradation mechanisms. Choke for oil production, severe circumferential channeling develops near the screw connection between the nozzle and choke body. In the second case, the corrosive fluid induces intense erosion-corrosion downstream the nozzle; the abnormal flow pattern is the consequence of the prior fracture of the nozzle.

Author

ramonaco

Language

EN