Water Injection Technology Research To Prevent Corrosion And Scale Formation In Panlong Production Plant

Panlong production plant, the author of this paper the corrosion and fouling problem faced in the injection Wells, the oil field water injection technology to prevent corrosion and scale formation. Carry on water quality to test and analysis of Panlong production injection Wells, determined the cause Panlong production plant is the main factor of corrosion and scaling injection Wells as the high salinity and bacteria, chlorine ion concentration is high, easy to scale such as calcium ions is higher, the high sulfide concentration. The oil field injection water calcium and bicarbonate ions, magnesium ions, sulfuric acid root ion, such as low, determine the scale of the main types of calcium chloride type scale. By sampling in different areas of the study, Panlong scaling of injection Wells is a common carbonate rock oil field scale, bottom hole to wellhead pressure is reduced into a scale and the root cause of the high salinity increase the level of scale formation. In this paper, according to the specific situation of the oil well scaling corrosion developed a new type compound downhole scale and corrosion inhibitor, its internal corrosion scale inhibitor have efficient scale inhibitors, preservatives, architecture of proppant and dissolving speed regulator, etc. To the composite underground scale and corrosion inhibitor down into the well fluid, the release of the effective anti corrosion inhibitor, by adsorption, chelate disperse effect to prevent scale formation, but also have certain effect to prevent oil well anticorrosion. In the practical use has been made good anticorrosion enough effect.