Results 1 to 10 of about 293,024 (264)

Study on reasonable gas extraction radius based on multi-index and multi-method

open access: yesEnergy Reports, 2022
The gas extraction radius is affected by coal seam gas pressure, borehole diameter, extraction time, extraction negative pressure and other factors. Under the coupling of different factors, the gas extraction radius of borehole is also different.
Fengfeng Yang   +6 more
doaj   +3 more sources

Study on the influence mechanism of air leakage on gas extraction in extraction boreholes

open access: yesEnergy Exploration & Exploitation, 2022
Borehole leakage is an important cause of gas extraction failure. In order to study the influence mechanism of borehole leakage on gas extraction, the borehole air leakage mode was studied, and a mathematical model was established to describe the ...
Xuebo Zhang   +3 more
doaj   +2 more sources

Geothermal heat use to eliminate hydrate formations in oil deposit injection wells [PDF]

open access: yesE3S Web of Conferences, 2021
The article is devoted to an actual issue: the development of internal downhole heat exchangers technology to combat hydration in injection wells. Purpose: development of conceptual solutions for the use of geothermal coolant in the internal well heat ...
Fyk Мykhailo   +3 more
doaj   +1 more source

Numerical simulation of proppant transport from a horizontal well into a perforation using computational fluid dynamics

open access: yesNatural Gas Industry B, 2023
With the increasing global demand for oil and gas, the development of unconventional resources such as shale gas is becoming ever more important.
Tiankui Guo   +6 more
doaj   +1 more source

Technological scheme of the combined geothermal-hydrocarbon system for the production and storage of energy resources [PDF]

open access: yesE3S Web of Conferences, 2021
The complex researches of schemes of extraction and storage of hydrocarbons and geothermal energy are executed in the work. In particular, according to the location, logistics and nature of the processes of generation, transportation, evacuation ...
Fyk Mykhailo I.   +3 more
doaj   +1 more source

Numeric simulation of the pulsation bottle for a reciprocating compressor in dynamic regime [PDF]

open access: yesMATEC Web of Conferences, 2021
The pulsation bottles are mounted at the inlet and outlet of / from the reciprocating compressor cylinders to even out the gas parameters (pressure and temperature). They ensure stable working conditions in the compressor cylinders and eliminate / reduce
Pana Ion, Dinu Florinel
doaj   +1 more source

The Balance of Multi-phase Gathering and Transport Systems [PDF]

open access: yesMATEC Web of Conferences, 2019
Natural gases are a mixture of hydrocarbons which are generally in a gaseous state. Due to the variation in transport parameters (pressure, temperature) and gas composition, there may be sectors where those appear in liquid state, the condensate.
Eparu Cristian Nicolae   +3 more
doaj   +1 more source

Analyzing the Impact of Monetary Instruments on the Amount of Domestic Debt in the Context of Formulating and Solving the Problem of Modeling the Threshold Level of Debt Security [PDF]

open access: yesProblemi Ekonomiki, 2023
The purpose of the article is illumination of the results of the carried out studies aimed at analyzing and quantifying the relationships between key monetary instruments and indicators of domestic debt in the context of determining the threshold levels ...
Pilko Andriy D., Chepyha Bohdan T.
doaj   +1 more source

Factors Influencing the Enhancement of Energy Efficiency in the Oil and Gas Industry [PDF]

open access: yesMATEC Web of Conferences, 2019
In Romania, major focus and interest are currently expressed for the energy strategies domain. The increase of the energetic efficiency is therefore a main concern for the authorities.
Suditu Silvian   +2 more
doaj   +1 more source

Hydrogen–Natural Gas Blending in Distribution Systems—An Energy, Economic, and Environmental Assessment

open access: yesEnergies, 2022
Taking into account the international policies in the field of environmental protection in the world in general, and in the European Union in particular, the reduction of greenhouse gas (GHG) emissions, and primarily of carbon dioxide, has become one of ...
Adrian Neacsa   +2 more
doaj   +1 more source

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