Composite Materials for Crude Petroleum Extraction

摘要

The paper is concerned with the ball valves life used in crude petroleum extraction pump. The main problem is the ability of the ball valves material to withstand erosion-corrosion wear due to the crude petroleum. The different composite materials for ball-valve couple are studied. The ball valves from the WC-Co system are recommended for crude petroleum extraction with high abrasive action and average corrosive environment. The ball valves from the WC-Ni system are recommended for crude petroleum extraction in high corrosion environment and constant abrasive action. The hard metal ball valves are used for the crude petroleum extraction with densities 0.8 ― 0.92 g/cm~3. For densities up to 0.8 g/cm3 ft is recommended the ceramic balls (ASMC grade) and the seat , both from the system WC-Co (G40) and/or NG40 (WC-lSTi), as function of the corrosion of the crude petroleum.