Plated Tungsten Technology Research And Application Of Sucker Rod Tube

Now, in the domestic oil, gas mining process corrosion, partial wear condition worsening, tubing, rod, pump working poor conditions of service. Since the time of the accident H2 S, CO2 and Cl-caused corrosion has occurred, to find a suitable corrosion-resistant series of economic tubing, sucker rod pump and has become a domestic and international oil and gas oil and gas field development focused on solving problems. Use plated tungsten alloy surface treatment technology, can effectively solve the production process of corrosion, partial grinding and other issues, to meet oil exploration wells corrosion, improve the life of the product, increased oil production and extend pump inspection cycle, lower production costs, improve mining yield.Through the study of eccentric wear and corrosion mechanism, combined with analysis of tungsten alloy plating process, developed to meet the saturated brine, highly corrosive environments(Cl-content 20000 mg / l, resistant to H2 S partial pressure 1MPa, resistance to various concentrations of CO2) production tubing, sucker rod, pump series. This paper developed two types of plating YC-5201, YC-5202, analyzed plated tungsten electrodeposition processes and reactions identified plated tungsten alloy production technology program. By the 12 kinds of laboratory tests to analyze the corrosion resistance of the plating layer of tungsten, wear resistance, and the binding ability of the matrix properties, compared with a chrome layer, a relative performance of the nickel plating layer, a tungsten layer obtained plating resistance wear resistance, corrosion resistance superior to nickel-and chrome-plated.By using the site, draw life-plated tungsten products are higher than the ordinary life of the product. Currently, this technology has been fully applied to the sucker rods, oil pump, the tubing, and mass production.