Application of chemicals for the enhancementof oilfield pipelines operational integrity
Background The factors complicating the operation of wells and pipelines include corrosion of oilfield equipment, development of sulfate reducing bacteria, asphaltene deposition, deposition of inorganic salts, solids removal, simplifying the construction of wells and equipping of oil fields, the formation of viscous emulsions «oil - water». These complications occur at the last stages of oil fields development with high water content and change both the composition and physical and chemical properties of the output. Aims and Objectives The aim is to analyze the efficiency of chemicals for improvement of the reliability of field pipelines operation. Results 1. In case of application of various chemicals in the oil industry it is necessary to take into account their compatibility in industrial processes, to organize the input control and work out the required norms and specifications. 2. The effectiveness of corrosion inhibitors and bactericides decreases with increasing of solids and sludge content, aeration of produced water and sewage and the lack of solubility or dispersibility of the reactants in the aqueous phase. 3. The use of hydrogen sulfide chemical scavenger is limited by high specific flow rates and mass transfer, so they are used marginally in the process of overhaul and underground repair of wells.