Abstract: With the increasing proportion of natural gas in energy supply, considering the changes in urban natural gas consumption time and peak pipeline pressure, how to balance gas supply and consumption will become the key to ensuring winter supply. This article aims to study and solve the problem of natural gas storage peak shaving, analyze the current situation and the advantages and disadvantages of different situations, and propose specific solutions. By studying underground gas storage facilities, liquefied natural gas (LNG) storage, compressed natural gas (CNG) storage, distributed gas storage systems, intelligent scheduling, and policy market mechanisms, new ideas are provided for building a low-carbon, efficient, and flexible gas storage peak shaving system. Read More

Abstract: The micro-nano scale pore throat of tight sandstone reservoir (TSR) will have a significant impact on the macroscopic seepage capacity of the reservoir. Based on X-ray diffraction (XRD), cast thin section (CTS), scanning electron microscopy (SEM), CT scanning and other testing methods, this paper studies the microscopic pore structure characteristics of tight sandstone reservoirs. The experimental results show that the quartz content of the core samples of the Chang 8 section of the tight sandstone reservoir is the highest, with an average value of 44.19%. The second is plagioclase, with an average content of 21.71%. The core samples are mainly fine-grained quartz sandstone and feldspar lithic sandstone, which are light gray as a whole, with poor oil content and basically no crude oil. The throat types are mainly flake and curved flake throats, and some tube bundle throats are developed. The maximum length of the flake throat is 348.80μm, and the width of the tube bundle throat stenosis is only 13.40μm. The total pore volume of low permeability core is 1.25×107μm3, and the volume percentage is 1.19%. The volume of connected pores is 3.49×106μm3, the volume percentage is 0.33%, and the proportion of connected pores is very low. Read More

Abstract: Aiming at the serious problem of corrosion of surface pipelines in Jiyuan Oilfield, this paper analyzes the corrosion law and corrosion mechanism of a gathering pipeline in Jiyuan Oilfield based on a variety of experiments. Research shows: through the spectrometer on the sampling pipe L245N composition analysis shows that the main elements of the pipeline tubing to meet the national standard requirements; the analysis of corrosion products and bacterial species shows that the corrosion type of this gathering pipeline is mainly CO2 corrosion and bacterial corrosion; based on the corrosion hanging experiment, it can be seen that the temperature in the temperature range of 10℃~50℃, with the increase in temperature corrosion rate becomes larger, the pressure on the pipeline corrosion rate has less impact; based on the results of water quality analysis and pipe corrosion microscopic morphology observation, the pipeline extracted water Cl- ion content is high, there is pitting corrosion, especially weld corrosion is more serious. Read More

Abstract: Since the beginning of the 21st century, France has increasingly prioritized climate change as a central focus of its energy transition strategy. In the wake of the Russia-Ukraine conflict, EU countries are now grappling with a new energy crisis. As one of the major powers within the European Union, France has been continuously adapting and refining its energy transition policies in response to these shifting energy dynamics. This paper examines the various factors contributing to the current energy crisis and analyzes France’s strategies and directions for energy adjustment. It also explores the future prospects of energy cooperation between China and France, particularly in the area of renewable energy. Building on this analysis and drawing parallels with China’s own energy transformation path, the paper offers insights and suggestions that may serve as a reference for China’s future energy transition efforts. Read More

Abstract: The wind energy heating system studied in this article mainly consists of three parts: vertical axis wind turbines, heaters, and heat exchange devices. A liquid stirring heating experimental platform was built based on the heating principle. By using a heating experimental platform, the speed of the driving motor is controlled to simulate the input characteristics of the wind turbine under different speed conditions, so that the heater can reach a stable state from static state. Study the changes in temperature and efficiency during the start-up process. Finally, an economic evaluation was conducted on the investment cost throughout the entire lifecycle by comparing it with coal-fired heating and electric heating methods. Read More