Abstract
<jats:p>The article addresses the issue of determining hydrocarbon losses in the system for collecting and preparing a gas–liquid mixture for transportation. At present, the main objective of the oil and gas industry is the maximum development of hydrocarbon reserves in fields. It is well known that hydrocarbon production is mainly carried out using the natural energy of the reservoir. Therefore, the reserves of a field should be understood as a combination of its hydrocarbon and energy resources. In other words, during the production process, efforts should be made not only to extract the maximum possible amount of hydrocarbons, but also to utilize the reservoir energy as efficiently as possible.In a period when the major share of global energy demand is met by hydrocarbon resources, hydrocarbon losses have become one of the global problems of mankind. Within the limits of modern scientific and technological progress, it is impossible to carry out hydrocarbon production and processing processes without losses. In order to minimize these losses, it is necessary to identify their causes. For this reason, an analysis of the system for collection, preparation, and transportation of products from the Bulla- sea gas-condensate field, as well as the operation of gas separation units, makes it possible to determine the amount of condensate carried over with sales gas. Due to the lack of facilities for collecting and transporting low-pressure gas, the gas is flared, and the entrainment of a certain amount of oil with the gas flow from the final separators leads to these losses. During the inspection of the above-mentioned facilities, it was determined that these losses occur as a result of the unsatisfactory condition of the technical means used for the separation of heavy hydrocarbons produced together with gas. When crude oil is stored in the tanks of gathering stations and during their filling and emptying operations, valuable light hydrocarbon fractions, generally used as motor fuel (gasoline), are lost due to evaporation. At certain pressures and temperatures, during tank filling and emptying, so-called “large breathing” losses occur: during filling, the vapor–air mixture is expelled from the tank (“exhalation”), and during emptying, atmospheric air enters the tank (“inhalation”). Based on this, calculations of losses occurring in the tank farm of the Dashgil DNOU are performed, and the volume of light hydrocarbon vapors released from the tanks is determined. In order to reduce losses of heavy components, it is considered expedient to transport gas condensate in a saturated state at a pressure of 20 atm from the Dashgil coastal facilities to the Azerbaijan Gas Processing Plant. Keywords: gas–liquid mixture, hydrocarbon losses, temperature, pressure, crude oil, separation, vapor phase, air–vapor mixture, gathering station, volume of hydrocarbon vapors, tank farm.</jats:p>