Research On Corrosion And Scaling Mechanism And Prevention Of Water Injection In Liu Quan Oilfield

Corrosion,scaling and plugging are caused by the interaction of influential factors in the water injection system.The most serious factors affecting the water system is corrosion.Oilfield water injection system and heat tracing water system due to the water quality complicated will produce some problems.The first problem is sewage corrosion.Most of oilfield water injection well in China adopt water injection exploitation that the injected water separated from oil well produced fluid of oilfield wastewater.Salinity of oilfield water is higher.Containing dissolved oxygen,free carbon dioxide and hydrogen sulfide will produce different degrees of corrosion to metal equipment and piping.Contained a lot of acid gases or high salinity wastewater can even caused pipeline perforation.The second problem is pipeline scaling.The thermodynamic instability and chemical incompatibility of water can lead to ground water injection system,formation water injection and oil well scaling in the wellbore.The serious still can cause congestion.The third problem is corrosion and scaling with heat tracing water.Heat tracing water line have to use high temperature water heating that caused the especially harm of corrosion and scaling.The corrosion and scale inhibition measures will be taken to enhance and improve oilfield recovery technology and reduce the corrosion and scaling problems of oilfield injection water and heat tracing water.Devoted to discuss the problems of corrosion and scaling of the water in Liu Quan oilfield and study the solution.Intends to the influence factors and characteristics of scale and corrosion of oilfield wastewater and heat tracing water.Through analysis of the corrosion and scaling status quo of the water in Liu Quan oilfield to map the figure about various affecting factors content.Explore the influence factors on the corrosion and scaling.Thus according to the analysis of corrosion and scale trend prediction then summed up the methods to prevent corrosion and scaling.The research on the mechanism and prevention will be beneficial to promote the region oilfield development better.