HYDRAULIC CHARACTERISTICS AND CONSUMPTION PARAMETERS OF PIPELINE FOR MULTIPHASE FLOWS

Abstract

Multiphase flows are found in almost all facilities and objects of the oil industry - oil and gas wells, oil transportation and storage facilities, oil refineries and petrochemical enterprises. Accurate modeling of the hydrodynamics of these processes is required to predict the productivity and operational efficiency of both hydrocarbon deposits and pipelines [2,7,8,10] . However, developing a reliable model for the correct modeling of processes is a very complex issue. Therefore, it is understandable that carrying out laboratory experiments are preferred. According to theoretical assessments and experimental data on the joint transportation of gas, oil, and water through the same pipeline the resistance to flow and the energy required for transportation will be significantly reduced if not oil, water is in contact with the pipe during flow, (although the pipeline's discharge capacity increases due to the addition of water) [8,10]. Experiments demonstrate that the high hydraulic resistance of the pipeline at ambient temperature makes it inefficient to transport high viscosity and paraffinic oils—which freeze at higher temperatures—as well as oil products using conventional methods. There are various multiphase flow structures that can be achieved when transporting oil and water together, regardless of whether the mixing is natural or artificial (for example, coaxial, emulsified, phase-separated, etc.), The coaxial structure forms because the water around the oil keeps it from coming into contact with the pipe wall. Since the contact of the water phase with the inner surface greatly reduces the friction, it significantly facilitates the transportation of the oil water mixture. Transport of multiphase mixtures is often accompanied by phase transformation, which leads to blockages caused by the gas liquid or solid phase is the collection or transport systems. Pipeline plugging results in a variety of technological complications and extra expenses incurred to eliminate their consequences. Most often phase imbalance at specific pressure values and a sudden shift in the carried product's viscosity lead to the formation of difficulties [2]. The article's primary goal is to investigate the hydraulic properties of pipes for multiphase flows. The primary techniques for the combined transportation of gas and oil, as well as an examination of the primary characteristics and structural configurations of multiphase flows. Keywords: multiphase flows, pipelines, consumption, pressure, temperature, volume, hydraulic characteristics, and pressure pulses.