## 1 Introduction  
The modern world is characterised by a constant increase in demand for energy resources, and the current volumes of extracted raw materials cannot fully satisfy the demand. In this regard, there is a tendency of continuous improvement of technologies of extraction, preparation, and transportation of hydrocarbon resources [1], but the overall impact on volumes is insignificant, as natural gas is widely used in many areas [2].  
One of the most prospective alternatives is the development of unconventional fields [3, 4, 5]. These include hard-to-extract hydrocarbons, in particular, reservoirs with complex structures [6, 7, 8]. A huge amount of natural gas reserves belongs to this type of raw material and is considered one of the most promising ways to replenish the production of energy supply resources [9, 10, 11].  
At present, the development of fields with complex geological structures is being actively carried out while using technologies that cannot fully ensure a truly high efficiency of exploitation of these deposits. Currently, the study of structurally complex reservoirs is approached from different aspects, and a number of studies are aimed at investigating the process of reservoir formation and the problems arising from the complex structure [12, 13, 14]. Multilayer structure and issues of fluid interaction between layers are considered [15, 16, 17]. A number of works are aimed at studying petrophysical [18, 19, 20] and lithological properties of reservoirs [21, 22, 23] in order to identify certain relationships [24, 25, 26]. In addition to traditional approaches for determining the petrophysical properties of reservoirs, new methods of automated mineralogy have recently been actively developed [27, 28]. Also, during reservoir development, it is necessary to take into account high values of temperature and pressure characteristic of this type of field [29; 30; 31].  
At present, the main part of research is aimed at studying the processes of hydrocarbon fluid movement in reservoirs, as well as general studies of reservoir properties [32; 33; 34]. Not much research attention is paid to the control processes during gas production in these types of reservoirs.  
This paper proposes to consider a gas-producing horizon as an object with distributed parameters. Real objects in the oil and gas field are mostly distributed in space (pipelines, oil, and gas-bearing reservoirs, etc.), which makes it impossible to consider them as concentrated objects, as this will lead to large inaccuracies and inconsistencies with the actual processes [35; 36; 37]. The application of distributed control systems (DCS) significantly improves the system's efficiency, and as a consequence, a favourable economic effect of DCS implementation is observed [38; 39; 40].  
The analytical review of the research topic shows that the study of unconventional oil and gas reservoirs with complex geological structure is an urgent task all over the world. The heterogeneity of the structures causes significant difficulties in the study and development of reservoirs, which requires the development of fundamentally new approaches to their solution. The purpose of this work is to form an algorithm for controlling the dynamics of pressure distribution in a structurally complex gas condensate field, which allows for an increase in the economic efficiency of the field exploitation process. The object of the study is the Achimov deposits of the Urengoy oil and gas condensate field (OGCF).