Published April 2025, Pg. 22-28

Section: Oil and gas field development and exploitation

UOT: 622.276

DOI: 10.37474/0365-8554/2025-04-22-28

On the issue of selection of the optimal technological mode for well operation

A.V. Sultanova - Azerbaijan State Oil and Industry University

R.M. Mammadov - Azerbaijan State Oil and Industry University

Taking into account the fact that most fields are at a late stage of development, optimization of the production process is of particular relevance. It is important to regulate the operation of wells and determine the optimal technological operating mode.
Gas and gas condensate deposits vary in depth from 250 meters to 10 kilometers or more. In order to extract hydrocarbon components, gas and gas condensate wells are drilled on the surface. Gas wells are used in a number of the following cases: to lift gas and move it from the reservoir to production systems on the surface; to prevent landslides in previously opened formations; for the purpose of separating oil-bearing, gas-bearing and aquifer-bearing formations; in order to remove gas leaks in underground conditions.
In order to establish the technological operating mode of gas condensate and gas wells, it is necessary to take into account numerous parameters, based on a comprehensive study of which the size of the gas-bearing deposit, the location of the gas-oil (if there is an oil rim), gas-water contacts and the trend of their change during the development process are determined; filtration and capacitance characteristics of each layer, properties of condensate, water, gas and oil (if there is a rim), water salinity, the nature of the change in the above indicators with changes in pressure and temperature in the process. It should be noted that based on the research carried out, the technological mode of the well, which takes into account formation deformation, bottom water, gas temperature, etc. is determined.
The use of mathematical statistics methods for analyzing certain processes, phenomena, as well as for establishing various relationships and dependencies between parameters is currently of great importance in the oil industry. For fields at the last stage of development, when there is a large volume of factual data, these methods are particularly relevant. The most common methods for assessing the impact of various parameters characterizing the main processes in the oil industry are associative, correlation and dispersion analysis.
It is known that the main result of successful development is the ultimate hydrocarbon recovery coefficient, which is known to be determined by the geological properties of the formations and the technological parameters of the development process. If the geological structure of the reservoir is unchanged, then the development system, which is the main technological parameter, is optimized. This is the main factor influencing the rate of selection, the rate of water cut, and the extraction coefficient. It should be noted that along with the listed factors, the accumulated net income is one of the main characteristics of the efficiency of work aimed at hydrocarbon production. 
The concept of a technological mode of well operation is a set of measures aimed at maintaining certain values of temperature, flow rate and pressure at the wellhead and surface structures by constantly regulating them in order to achieve an increase in development indicators.
Typically, a number of parameters are defined and assigned for each well to ensure its efficient operation. These include the well flow rate, the volume of condensate produced, the value of reservoir and bottomhole pressure, wellhead pressure, wellhead temperature, as well as the well and bottomhole design. 
It should be noted that the well operating mode may change at different stages of development. This is due to changes in the parameters that limit the gas well flow rate.

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