Domestic Gas Research Articles

CHARACTERISTICS OF THE DEVELOPMENT OF THE GAS SUPPLY SYSTEM IN THE REPUBLIC OF ARMENIA

Gas distribution and transportation networks make up the gas supply system. Providing natural gas to the public and the economy is the primary objective of the gas delivery system. Every nation's gas supply network is strategically vital since the cost of natural gas directly impacts the goods and services that are produced and rendered there. It is true that developed nations are looking for innovative technology for natural gas extraction because it is a non-renewable resource. Founded during the Soviet era and throughout multiple phases of development, the Republic of Armenia's gas supply system is a component of the worldwide network. The Public Services Regulatory Commission and the Armenian government, through the Ministry of Territorial Administration and Infrastructure, oversee the country's gas supply industry. The article discusses the Republic of Armenia's domestic natural gas market's supply and sales, its background and present state, investment initiatives, and features that increase the system's operational efficiency.

Rethinking the theory of quiet politics: bad corporate behavior and the failure of quiet politics in the east coast gas crisis in Australia, 2022

Abstract The theory of quiet politics has two propositions; first, that business interests prefer to engage with governments in ‘quiet’ arenas shielded from the media and the day-to-day political fray, and second that business interests exert power over governments in quiet politics. We counter the second proposition, arguing that business generally exercises influence rather than power in quiet politics. One precondition for the successful exercise of influence is the acceptance by business of certain protocols of behavior in interactions with governments. In this paper we underline the importance of such protocols by exploring the dynamics of a conflict between the east coast gas industry and the federal government in Australia amidst steep rises in domestic gas prices and supply restrictions in 2022. The gas industry behaved badly in the economy and in politics and did not abide by the relevant protocols of engagement with the government. The government responded aggressively and quiet politics failed. The paper underlines the importance of the behavioral pre-conditions for business influence in quiet politics and what can go wrong if this fails.

Technological sovereignty as a factor of competitiveness of oil and gas companies of the Russian Federation

Aim. To investigate the importance of technological sovereignty for strengthening the competitive positions of Russian oil and gas companies.Objectives. To identify the key factors that determine the level of technological independence of oil and gas companies; to assess how these factors affect their ability to compete successfully at the national and international levels.Methodology. The research uses general scientific methods of analysis and synthesis using a systematic approach.Results. The essence of technological independence as a factor in the development of competitiveness of companies in the oil and gas sector was analyzed. The assumption is formulated that the achievement of technological sovereignty allows companies to mitigate risks arising from external factors, including international sanctions and restrictions on access to advanced foreign technologies. Several strategic initiatives have been proposed to strengthen the technological sovereignty of the domestic oil and gas industry: training of highly qualified personnel, introduction of tax incentives and subsidies from the state for companies, creation of special economic zones or technology parks, protection of intellectual property and support for patent activity.Conclusions. Technological independence is the most effective method in the context of the struggle of Russian industrial companies against external challenges: sanctions and changes in global energy markets. The development of national technologies in the oil and gas sector due to the synergetic effect has a positive impact on strengthening the competitive advantages of Russian national companies in both domestic and international markets. In order to ensure technological sovereignty, special attention should be paid to the development of strategic risk management mechanisms, as well as effective communication models between the state, industry, and science.

Numerical study of [formula omitted]-fuelled micro-free piston CHP system, coupled with thermophotovoltaic (TPV) and battolyser units

Hydrogen (H2) fuelled internal combustion engines (ICEs) can play an important role in small-scale applications despite low efficiency, short reactant residence time and pre-combustion issues. In this study, a hybrid green H2 production and utilisation system covering renewable-powered H2O electrolysis, micro-CHP (combined heat and power) and thermoelectric units was developed. The solar or wind powered battolyser system stores electricity and utilises it to produce H2. The produced green H2 combusts with air in the cylinder to drive the turbine and the electric generator. While the thermophotovoltaic (TPV) unit converts the heat radiation into electrical energy to maximise the power efficiency of the developed hybrid system. The result showed a better temperature distribution, higher pressure discharge on both pistons’ walls and increased energy efficiency by replacing a single-piston with the opposed piston cylinder combustor and using cylinder exit gas to generate more electricity. Steam coolant reduced the thermal stress on the cylinder wall. The mounted TPV unit on the cylinder wall converted the absorbed heat flux to 3.9 kW. The maximum power output of the solar PV and wind turbine systems was reached at an irradiance of 1200 W/m2 under ambient temperature conditions and a wind speed of 17 m/s. By using the exhaust gas from the cylinder to drive the gas turbine, 8.8 kW power output and an electrical efficiency of 31.9 % were recorded. NOx emissions <6 ppm and a CHP efficiency of 93.5 % were achieved for the developed hybrid system. The proposed system can substitute the current domestic gas boiler which is in the phase-out state.

Current Status and Trends in Shale Oil and Gas Drilling Engineering Technology Development at Home and Abroad

Abstract Shale oil and gas is an important component of unconventional oil and gas, and the United States has achieved energy independence through the shale revolution. China has abundant unconventional oil and gas resources, and the vigorous development of shale oil and gas is a necessary path for the development of China’s oil and gas industry. By systematically analyzing the developmental characteristics of shale oil and gas major countries, represented by North America, this study compares domestic and foreign shale oil and gas drilling engineering technologies from the perspectives of development process, well construction cycle, drilling parameters, and other aspects. It clarifies the advantages and challenges of Chinese shale oil and gas drilling engineering technology and provides targeted recommendations. The drilling mode for shale oil and gas in China has progressed from single horizontal wells to large-scale platform factory operations, significantly reducing costs and increasing efficiency. However, due to the complex geological conditions of shale formations and poor surface environment, China’s shale oil and gas wells have a horizontal section length about 1000 meters shorter than those in North America, and the well construction cycle is 2-3 times longer. There are still certain gaps in drilling efficiency and operating costs compared to foreign countries. By systematically analyzing the development process and parameter characteristics of shale oil and gas drilling engineering technology at home and abroad, this study clarifies the current status of drilling engineering technology, providing references for the integration and promotion of mature technologies, demonstration of key core technology breakthroughs, and exploration of cutting-edge technology research and development.

Research and Application of Drilling and Completion Technologies on Large-size Injection-production Well

Abstract The large-size injection-production well can increase the injection-production capacity to more than 3 times, compared with the conventional-size one. However, it had not been popularized and promoted for many years since it had the technical difficulties of long construction period, high engineering risk and large investment in a single well. The Liaohe double-6 gas storage planned to deploy 3 large-size horizontal wells, aiming at further improving injection-production capacity to satisfy peak shaving demand. To overcome the technical difficulties of large-size well, the drilling scheme was optimized according to geological characteristics of double-6 block in the paper. It included wellbore structure design, wellbore diameter control technology and hole cleaning technology. The optimized drilling scheme can not only improve the wellbore integrity, but also reduce the risk of engineering accidents and shorten the drilling period greatly. Besides, the cementing technology was optimized as well from the aspects of hierarchical cementing and cement slurry design, which can be used to solve the problems of high pressure at the bottom of well and large leaking risk of cement. On the basis, the above drilling and cementing technologies were applied to develop three large-size wells, and good practical results were achieved. The average completion period of the three well was 104 days, 36 days shorter than the planned period, which realized the applying effects that large-size wells can be designed, constructed, and produced in the same year. Moreover, the ultrasonic evaluation results showed that the average qualified rates of the three wells in technical casing was 92.8%, which was much higher than the industry standard. Besides, the test results showed that the injection and production volume of each large-size well in the paper can exceed 3 million cubic meters, solving the problem of insufficient injection-production capacity in the months with high peak shaving demand. Above all, the drilling and cementing technologies of large-size well had been optimized in the paper, which successfully reduced the well completion period, and improve the cementing quality and the safety of drilling construction. The researches can not only ensure the project quality of large-size well in Liaohe double-6 gas storage, but also provide technical support for promoting the drilling and completion engineering of large-size well in other domestic and foreign gas storages.

Passive control of thermoacoustic instability in a high-efficiency domestic gas stove with fine-tuning burner

Thermoacoustic oscillation is a significant challenge in the development of advanced thermal power and propulsion systems. The present work focuses on the whistling phenomenon in the practical burners of a developing high-efficiency domestic gas stove. The acoustic analysis is conducted by a Helmholtz acoustic solver, identifying the 1/2 wave longitudinal mode in the outer ring or center nozzle and its upstream pipe and estimating the modal eigenfrequencies fa=599Hz and fb=647Hz which are close to the main frequency of the whistling measured in experiments. The sequential flame images captured by a high-speed camera are processed by a dynamic mode decomposition method to illustrate flame structure oscillations at the peak frequency mode. The results verify that thermoacoustic oscillations are the generation mechanism of the whistling and display the periodic fluctuation characteristics of the flame and the spatial distribution of heat release. Moreover, both structural fine-tuning designs help to achieve better suppression for thermoacoustic oscillations and avoid the whistling phenomenon. These structural fine-tuning strategies have been researched for several decades but rarely reported to be applied to industrial burners in previous work. Motivated by this, it will provide a new insight into the investigation of burner structures on thermoacoustic behaviors and the application of these passive control strategies.

Predicting UK Domestic Electricity and Gas Consumption between Differing Demographic Household Compositions

This paper examines the influence of building characteristics, occupant demographics and behaviour on gas and electricity consumption, differentiating between family groups; homes with children; homes with elderly; and homes without either. Both regression and Lasso regression analyses are used to analyse data from a 2019 UK-based survey of 4358homes (n = 1576 with children, n = 436 with elderly, n = 2330 without either). Three models (building, occupants, behaviour) were tested against electricity and gas consumption for each group. Results indicated that homes without children or elderly consumed the least energy. Property Type emerged as the strongest predictor in the Building Model (except for homes with elderly), while Current Energy Efficiency was less significant, particularly for homes with elderly occupants. Homeownership and number of occupants were the most influential factors in the Occupants Model, though this pattern did not hold for homes with elderly. Many occupant and behaviour variables are often considered ‘unregulated energy’ in calculations such as SAP and are thus typically disregarded. However, this study found these variables to be significant, especially as national standards improve. The findings suggest that incorporating occupant behaviour into energy modelling could help reduce the energy performance gap.

Performance analysis of the infrared gas stove with a vertical ejector

Energy conservation and emission reduction are critical global concerns, with infrared gas stoves recognized for their superior thermal efficiency and low emissions. However, research on infrared gas stoves with vertical ejectors, particularly those designed for use in horizontally constrained spaces, remains sparse. To bridge this gap, an experimental system is constructed to investigate the effects of perforated plate height, nozzle exit position (NXP), and heating height on stove performance. The experimental results reveal that gas uniformity is significantly influenced by the height of the perforated plate, while NXP has a lesser impact. The optimal height of the perforated plate is 12 mm, and the recommended value for NXP is −4 mm. With the heating height increasing from 15.0 mm to 36.5 mm, the thermal efficiency of the infrared gas stove decreases from 70.2 % to 59.3 %. The concentration of carbon monoxide in the flue gas initially declines sharply then gradually increases with the increase of heating height. Meanwhile, the concentration of nitrogen oxide exhibits slight fluctuations, with a mere 2 ppm difference between maximum and minimum values. Based on the results, a heating height of 19.3 mm is recommended. This study provides guidance for optimizing domestic gas stoves.

Perancangan Sistem Pengendalian Risiko Menggunakan Simplified Bowtie Analysis pada Fasilitas FSO Federal II di PT XYZ

The oil and gas industry in Indonesia, including PT XYZ which manages domestic oil and gas, faces high complexity and risk. PT XYZ's operations are supported by several offshore platforms and facilities which have various potential risks. Process safety is a top priority to prevent major incidents or major accidents. PT XYZ uses Process Hazard Analysis (PHA) which needs to be revalidated every five years to ensure procedures comply with current conditions. This research focuses on the FSO Federal II facility owned by PT XYZ, a 200 thousand barrel capacity crude oil storage vessel with a high potential risk of major incidents. PT XYZ uses the HAZOP and HAZID methods in PHA to identify risks. However, PT XYZ does not yet have a direct control system for workers. This research aims to create a risk control system that can be used by Federal II FSO workers as a work guide. This work guide will help in handling undesirable events that have the potential to cause major incidents. Proposed improvements include creating a work guidance document based on risk identification using Bowtie Analysis, which produces a mapping diagram of causes, peak events, hazards and consequences. The bowtie diagram will be simplified to make things easier for workers, considering the large number of processes in FSO Federal II. This guideline will help workers prevent major incidents from occurring.

Anti-Russian sanctions in the domestic oil and gas industry: problems and prospects

The relevance of the topic of the scientific article is determined by a number of circumstances related to the fact that the oil and gas industry is one of the main sectors of the Russian economy, as well as an important component of domestic exports. The sanctions of Western countries on the economy of the Russian Federation have had a noticeable impact on the operating conditions of the industry and the requirements imposed on it by the world and the national economy. The article formulates the challenges facing the industry, which is under sanctions, and shows the possibilities of its development in 2024 and in the future. According to the author, the effectiveness of industry management, improvement of technologies, logistics, as well as the search for non-traditional sales markets are of fundamental importance today. The purpose of the article is to identify the problems of the domestic oil and gas industry that arose in the sanctions conditions, to identify realistic directions for its development. The subject of the study is the hydrocarbon industry of the Russian Federation, the object of the study is changes in the domestic energy sector under the influence of Western sanctions. The article used analytical, comparative, empirical methods and visualization. It is shown that along with the development of traditional energy in the Russian Federation, it is important to pay close attention to the intensification of activities in the field of renewable energy sources. A number of measures have been proposed to reduce the negative impact of sanctions on the hydrocarbon segment of the domestic economy.

Research progress on accounting methods for domestic and international sulfur hexafluoride greenhouse gas emissions reduction

Abstract Sulfur hexafluoride (SF6) is a high-quality ultra-high voltage insulating dielectric material with unique insulation and arc-extinguishing properties, and is widely used in power companies. However, sulfur hexafluoride is the strongest known greenhouse gas and is extremely difficult to degrade, so its emissions into the atmosphere need to be strictly limited. In the process of carbon emission reduction, the first step is to conduct carbon accounting, and accounting methods for SF6 emissions at home and abroad are gradually being supplemented and improved. Although major breakthroughs have been made in various aspects of SF6 carbon accounting at home and abroad, there is a lack of comprehensive discussion of the current main progress. This article first summarizes the current process of SF6 carbon accounting under two major categories and four methods at home and abroad. After that, the boundaries of each category, quantification methods, and accounting methods under the four major methods were further compared in detail. Finally, the positive impact that these methods can bring to the company’s operations is analysed from the perspective of inventory reporting, certification application and domestic carbon market transaction profits. This article systematically explains the current research progress from the aspects of method classification, practical operation and final practical application, in order to provide theoretical support for further promoting new accounting methods in the future.

Automated gas-controlled cooker system design and implementation

Cooking from ancient times has evolved from using open fires to wood, gas cookers, using liquefied petroleum gas (LPG). This has also come with various adverse effects ranging from gas leakages to burnt food due to absent-mindedness, thereby creating a significant disaster that could lead to loss of life and property damage. The study aimed to reduce the rate of liquefied petroleum gas related accidents in domestic usage and improve the safety of domestic gas users. An automated method to enforce safety was proposed to avoid unwanted cooking gas flow consequences, especially in homes. The paper presents a control system using an Arduino Uno with a control design interfaced with a utensil sensor, solenoid valve, and a timer circuit to allow gas flow to commence and ignite a flame automatically. The automatic ignition apparatus, which has a high-voltage electric circuit, begins to function once the utensil detector comes in contact with silverware. The system is designed to function in different modes to ensure safety and prevent gas flow. The prototype serves as a means of curbing gas wastage and increasing the safety of people who use LPG as a source of fuel for cooking.

An Analysis of Greenhouse Gas Emissions in Electrolysis for Certifying Clean Hydrogen

The drive for carbon neutrality has led to legislative measures targeting reduced greenhouse gas emissions across the transportation, construction, and industry sectors. Renewable energy sources, especially solar and wind power, play a pivotal role in this transition. However, their intermittent nature necessitates effective storage solutions. Green hydrogen and ammonia have gained attention for their potential to store renewable energy while producing minimal emissions. Despite their theoretical promise of zero greenhouse gas emissions during production, real-world emissions vary based on system configurations and lifecycle assessments, highlighting the need for detailed evaluations of their environmental impact. Therefore, in this study, calculations were performed for the actual amount of produced greenhouse gas emissions that are associated with the production of green hydrogen using electrolysis, from raw material extraction and processing to hydrogen production, with these assessed from well-to-gate emission estimates. Emissions were also evaluated based on various types of renewable energy sources in South Korea, as well as hydrogen production volumes, capacities, and types. Using these data, the following factors were examined in this study: carbon dioxide emissions from the manufacturing stage of electrolysis equipment production, the correlation between materials and carbon dioxide emissions, and process emissions. Current grades of clean hydrogen were verified, and the greenhouse gas reduction effects of green hydrogen were confirmed. These findings are significant against the backdrop of a country such as South Korea, where the proportion of renewable energy in total electricity production is very low at 5.51%. Based on the domestic greenhouse gas emission efficiency standard of 55 kWh/kgH2, it was found that producing 1 kg of hydrogen emits 0.076 kg of carbon dioxide for hydropower, 0.283 kg for wind power, and 0.924 kg for solar power. The carbon dioxide emissions for AWE and PEM stacks were 8434 kg CO2 and 3695 kg CO2, respectively, demonstrating that an alkaline water electrolysis (AWE) system emits about 2.3 times more greenhouse gasses than a proton exchange membrane (PEM) system. This indicates that the total carbon dioxide emissions of green hydrogen are significantly influenced by the type of renewable energy and the type of electrolysis used.

Development of oil refining and petrochemistry in the Republic of Kazakhstan according to the cluster principle

Oil and gas resources are a non-renewable type of raw material, as a result of which we can talk about their exhaustibility and limitation. The reserves explored so far are limited in volume, many de-posits are at the stage of depletion, which predetermines the need for their careful and rational re-source-saving use. The problems of integrated and rational use of natural resources in order to in-crease their efficiency and reduce the burden on the environment have acquired particular significance in environmental and economic development. Today, contradictions have arisen between limited re-source capabilities and the growing needs of society. Extracted resources are used with low utility. The remaining part is waste, which occupies significant areas; participate in the process of alienation of highly fertile lands; Due to the content of toxic compounds, they cause irreparable harm to the envi-ronment and human health. Industrial production at the present stage is developing at an accelerated pace, as a result of which the need for raw materials is constantly increasing. In conditions of resource limitations of non-renewable raw materials, which include hydrocarbons, there is an urgent need for their rational use. Taking into account the non-renewable and multi-component composition of oil and gas resources, it is necessary to focus on its rational use, aimed at the complete, economically justified extraction of all valuable components contained in it, as well as the use of recyclable materials and production waste, i.e. resource saving. All these aspects directly affect the minimization of environmental risks. The article substantiates the feasibility of the integrated use of hydrocarbon resources in the pro-cess of further development of the domestic oil and gas complex in order to increase its competitive-ness. The authors propose ways to develop petrochemical production that can produce a wide range of commercial products with high added value. The article substantiates the position that with the devel-opment of the petrochemical industry, the oil and gas complex of the republic will acquire the neces-sary stability and will be able to become not only a leading, but also a knowledge-intensive sector of the domestic economy.

Process and production enhancement through codigestion in biogas generation

AbstractPakistan is facing a major challenge in the domestic gas and energy sector, and its demand is continuously growing. It is imperative to produce more energy in the form of gaseous resources and electricity to reduce this energy crisis in the future. The current work is related to studying various factors that play a critical role in enhancing the process and production of biogas. The effect of codigestion, substrate size, temperature, pH, and catalyst addition are important parameters. Three batch processes are conducted for 21 days under mesophilic conditions, which is easier to achieve as compared with the thermophilic one. Codigestion of cow manure combined with food, poultry waste, and sewerage water showed some promising results compared with a single substrate (cow dung). This results in the production of biogas of about 120 L. The particle size is then reduced to 5 mm, which leads to an increase in the available surface area for microbial attack and hence increases and enhances further the process and production of biogas. However, the addition of 250 g of silica gel increases production by up to 17%. The better value for the pH range for this batch was found in the range of 6.5–7.8. The codigestion would help in cost‐effective and more efficient waste treatment. The digestate in all the batch processes comes out enriched in nitrogen that is used as an organic fertilizer.

Measurement and quantification of methane emissions from residential gas stoves and tankless water heaters in China

Methane is a short-lived and potent greenhouse gas with a rapid warming effect. Gas stoves and water heaters, which are the most widely used domestic gas appliances (over 250 million in China), emit methane because of incomplete combustion and leakage. This study quantified the methane emissions of these two gas appliances at different ages through field measurements and laboratory tests to assess their impact on the climate. Their methane concentrations typically spiked quickly and decayed rapidly during ignition and extinguishment, but were low and stable during the steady-on state. Tankless water heaters emitted 1.69‰ (95% confidence interval: 1.44‰, 2.01‰) of the natural gas consumed, primarily during the on-pulse phase. More than four-fifths of the methane emissions from gas stoves occurred in the steady-on state, and the emission rates were positively correlated with the age of the gas stoves (r2 = 0.79, p < 0.001). Therefore, approximately 28.1 (27.5, 28.6) Gg of methane emissions annually can be attributed to Chinese residential gas appliances, corresponding to a 0.8 Mt. carbon dioxide equivalent over a 100-y scale.

A Surrogate Model of Heat Transfer Mechanism in a Domestic Gas Oven: A Numerical Simulation Approach for Premixed Flames

This paper introduces an innovative analytical model to compute flame velocities and temperatures within a premix burner in a domestic gas oven. This model significantly streamlines the heat transfer simulation process by simplifying the modeling of the thermo-chemical energy release during combustion, effectively reducing complexity and computation time. Accelerated solutions are essential at the initial design stages when comparing the effect of the oven parameter variation on the overall performance. The validation of the proposed analytical model involved experimental assessments of the temperature of the false bottom plate in a natural gas oven. The resulting data were then compared against CFD simulations performed utilizing the proposed model. The results revealed a marginal discrepancy of 4% between the experimental measurements and the outcomes generated by the model. Simulations were executed under differing conditions, encompassing scenarios with and without radiation effects. This exploration identified natural convection as the predominant heat transfer mechanism, with heat radiation contributing only modestly to the heating of the false bottom plate. Among its advantages, the proposed model offers a notable reduction in the numerical complexity of the modeling of the combustion process. Furthermore, its straightforward integration into numerical simulations involving premixed flames underscores its practical utility and versatility in evaluating design performance at the early stages of the design. Highly accurate models can be left for the final oven configuration validation.

Session 14. Oral Presentation for: Implications of Western Australia’s updated domestic gas policy

Session 14. Oral Presentation for: Implications of Western Australia’s updated domestic gas policy

Review about evaluation methods of recoverable reserves of deep water drive gas reservoirs in China

It has been widely accepted that China is one of the biggest natural gas consumers. Related to the imports of LNG, China stands in a very uncomfortable situation. Most domestic gas reservoirs fall within deep water drive gas reservoirs inordinately, which has entered the production depletion stage. Accurate estimation of SEC recoverable reserves of deep water drive gas reservoirs is of great significance for gas consumption planning and peak shaving. The existing calculation methods of recoverable reserves mainly consist of static methods and dynamic methods. In the early stage of exploration and development, the volumetric method has often been utilized to calculate the recoverable reserves. With the continuous development of gas reservoirs, the main methods for evaluation are dynamic methods, including the successive subtraction of production method, water drive curve method, prediction model method, attenuation curve method, improved virtual curve method, and material balance method for deep gas reservoirs.