Determination of fuel consumption by mobile pumping units for hydraulic fracturing depending on the temperature regime of high-pressure pumps
DOI:
https://doi.org/10.31471/1993-9965-2026-1(60)-47-60Keywords:
oil and gas technological transport; fuel consumption; energy efficiency; optimal temperature; high-pressure pump; friction torque.Abstract
The article considers the problem of increasing the energy efficiency of mobile pumping units for hydraulic fracturing in the oil and gas industry. The results of studies of the influence on the energy consumption and resource of high-pressure pumps of mobile pumping units for hydraulic fracturing of the factors that can be divided into types by speed: fast processes, medium-speed and slow. It was established that by physical nature all factors that affect the energy efficiency of high-pressure pumps during operation are divided into climatic, hydraulic and mechanical. The temperature regime of operation of high-pressure pumps of mobile pumping units for hydraulic fracturing of the formations was analyzed. It was established that studies of the energy efficiency of high-pressure pumps of mobile pumping units for hydraulic fracturing of the formations from the temperature of the working fluid have not yet been conducted. The purpose of the research is to establish in laboratory and industrial conditions the relationship between the fuel consumption of mobile pumping units for hydraulic fracturing of the temperature of the oil of high-pressure pumps. In accordance with the formulated goal, heat exchangers were developed and installed to ensure the specified oil temperature levels of high-pressure pumps; experimental dependences of the change in oil temperature in the high-pressure pump of the mobile pumping unit for hydraulic fracturing FC-2251 on the Kenworth T800 chassis were established at different pump output pressures; the dependences of fuel consumption and friction moments in the friction pairs of the high-pressure pump of the mobile pumping unit for hydraulic fracturing FC-2251 on the Kenworth T800 chassis on the temperature of its oil were experimentally investigated. The results of the experiments showed that with increasing oil temperature, the values of the friction moment and fuel consumption change along a parabolic curve, reaching a minimum at a temperature of 45...65 0С, since at an oil temperature of less than 45 оС it is difficult to supply viscous oil to the friction surfaces, which leads to increased friction moment and excessive fuel consumption of the drive engine. At temperatures above 65 °C, at high loads and pressures, areas with limiting friction begin to appear in the piston friction pairs, which also leads to increased friction torque and excessive fuel consumption of the drive engine. Thus, it was investigated that there is a temperature interval of 45...65 °C, at which the friction torque and fuel consumption are the lowest.
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