Magazynowanie wodoru w obiektach geologicznych

Hydrogen economy became one of the main directions in EU’s Green Deal for making Europe climate neutral in 2050. Hydrogen will be produced with the use of renewable energy sources or it will be obtained from coking plants and chemical companies. It will be applied as ecological fuel for cars and as a mix with methane in gas distribution networks. Works connected with all aspects of hydrogen infrastructure are conducted in Poland. The key problem in creating a hydrogen system is hydrogen storage. They ought to be underground (RES) because of their potential volume. Three types of underground storages are taken into account. There are salt caverns, exploited gas reservoirs and aquifers. Salt caverns were built in Poland and now they are fully operational methane storages. Oli and Gas Institute – National Research Institute has been collaborating with the Polish Oil and Gas Company since 1998. Salt cavern storage exists and is used as methane storages. Now it is possible to use them as methane-hydrogen mixtures storages with full control of all operational parameters (appropriate algorithms are established). Extensive study works were carried out in relation to depleted gas reservoirs/aquifers: from laboratory investigations to numerical modelling. The consortium with Silesian University of Technology was created, capable of carrying out all possible projects in this field. The consortium is already able to undertake the project of adapting the depleted field to a methane-hydrogen storage or, depending on the needs, to a hydrogen storage. All types of investigations of reservoir rocks and reservoir fluids will be taken into consideration.

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Zmiany parametrów mieszaniny gazu ziemnego z wodorem w trakcie eksploatacji komory magazynowej w kawernie solnej

Nafta-Gaz ◽

10.18668/ng.2020.11.05 ◽

2020 ◽

Vol 76 (11) ◽

pp. 799-806

Author(s):

Paweł Budak ◽

◽

Tadeusz Szpunar ◽

Keyword(s):

Hydrogen Content ◽

Distribution Network ◽

Calorific Value ◽

Gas Reservoirs ◽

Heating Value ◽

Salt Domes ◽

Depleted Gas Reservoirs ◽

Salt Caverns ◽

Short Time ◽

Water Gas

Underground gas stores are built in depleted gas reservoirs or in salt domes or salt caverns. In the case of salt caverns, the store space for gas is created by leaching the salt using water. Gas stores in salt caverns are capable to provide the distribution network with large volumes of gas in a short time and cover the peak demand for gas. The salt caverns are also capable to store large volumes of gas in case when there is too much gas on a market. Generally, the salt caverns are used to mitigate the fluctuation of gas demand, specifically during winter. The gas provided to the distribution network must satisfy the requirements regarding its heating value, calorific value, volumetric content of hydrogen and the Wobbe number. Large hydrogen content reduces the calorific value as well as the heating value of gas and thus its content must be regulated to keep these values at the acceptable level. One should also remember that every portion of gas which was used to create the gas/hydrogen mixture may have different parameters (heating value and calorific value) because it may come from different sources. The conclusion is that the hydrogen content and the heating value must be known at every moment of gas store exploitation. The paper presents an algorithm and a computer program which may be used to calculate the hydrogen content (volumetric percentage), heating value and calorific value (plus the Wobbe number) of gas collected from the salt cavern at every moment of cavern exploitation. The possibility of the presence of non-flammable components in the mixture and their effect on the heat of combustion / calorific value were considered. An exemplary calculation is provided.

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Earthquakes and depleted gas reservoirs: which comes first?

Natural Hazards and Earth System Sciences Discussions ◽

10.5194/nhessd-2-7507-2014 ◽

2014 ◽

Vol 2 (12) ◽

pp. 7507-7519

Author(s):

M. Mucciarelli ◽

F. Donda ◽

G. Valensise

Keyword(s):

Oil And Gas ◽

Gas Reservoirs ◽

Po Plain ◽

The Public ◽

Hydrocarbon Traps ◽

Fold And Thrust Belt ◽

Depleted Gas Reservoirs ◽

The Impact ◽

Practical Implications ◽

Shed Light

Abstract. While scientists are paying increasing attention to the seismicity potentially induced by hydrocarbon exploitation, little is known about the reverse problem, i.e. the impact of active faulting and earthquakes on hydrocarbon reservoirs. The recent 2012 earthquakes in Emilia, Italy, raised concerns among the public for being possibly human-induced, but also shed light on the possible use of gas wells as a marker of the seismogenic potential of an active fold-and-thrust belt. Based on the analysis of over 400 borehole datasets from wells drilled along the Ferrara-Romagna Arc, a large oil and gas reserve in the southeastern Po Plain, we found that the 2012 earthquakes occurred within a cluster of sterile wells surrounded by productive ones. Since the geology of the productive and sterile areas is quite similar, we suggest that past earthquakes caused the loss of all natural gas from the potential reservoirs lying above their causative faults. Our findings have two important practical implications: (1) they may allow major seismogenic zones to be identified in areas of sparse seismicity, and (2) suggest that gas should be stored in exploited reservoirs rather than in sterile hydrocarbon traps or aquifers as this is likely to reduce the hazard of triggering significant earthquakes.

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Investigation of graphene effect on the anti-corrosion behaviour of polyurethane coatings in sea-water

Anti-Corrosion Methods and Materials ◽

10.1108/acmm-01-2019-2054 ◽

2019 ◽

Vol 66 (6) ◽

pp. 853-860

Author(s):

Hai Tan ◽

Deguo Wang ◽

Yanbao Guo

Keyword(s):

Carbon Steel ◽

Oil And Gas ◽

Sea Water ◽

Corrosion Behaviour ◽

Renewable Energy Sources ◽

Corrosion Property ◽

Gas Reservoirs ◽

Content Type ◽

Corrosion Behaviors ◽

Steel Surfaces

Purpose Abundant oil and gas reservoirs in the deep-water are the valuable non-renewable energy sources. However, sea-water could enhance the corrosion of marine equipment such as submarine pipe trees. Various coatings, for example, polyurethane (PU) coatings are sprayed on the steel surfaces to enhance the anti-corrosion performance. Thus, to improve the anti-corrosion behavior of PU coatings in sea-water is imperative. Design/methodology/approach In this paper, the corrosion behaviors of 4130 carbon steel with and without PU coatings were discussed by electrochemical mean in sea-water. And the graphene additive in different concentrations (0.1, 0.3, 0.6 and 0.9 per cent) were also studied. A series of characterized methods were introduced to identify the anti-corrosion performances of 4130 carbon steel with and without coatings, respectively. Findings The results showed that the anti-corrosion property of 4130 carbon steel can enhance obviously with the PU coatings. The graphene additive can further improve the anti-corrosion behaviour of PU coatings and in the concentration of 0.6 per cent the PU/graphene coatings worked best. Originality/value This is beneficial for enhancing the service life of marine equipment in an eco-friendly method.

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In-situ hydrogen wettability characterisation for Underground Hydrogen Storage

10.31223/x54045 ◽

2021 ◽

Author(s):

Scott Higgs ◽

Ying Da Wang ◽

Chenhao Sun ◽

Jonathan Ennis-King ◽

Samuel Jackson ◽

...

Keyword(s):

Contact Angle ◽

Hydrogen Storage ◽

Distilled Water ◽

Pendant Drop ◽

Micro Computed Tomography ◽

Gas Reservoirs ◽

Effective Contact ◽

Depleted Gas Reservoirs ◽

Term Energy

Hydrogen storage in subsurface aquifers or depleted gas reservoirs represents a viable seasonal and/or long-term energy storage solution. However, currently, there is a scarcity of subsurface petrophysical data for the hydrogen system, limiting modelling work and industrial rollout. In this work, we address the knowledge gap by determining the wettability and Interfacial Tension (IFT) of the hydrogen-brine-quartz system using a multi-modal, in-situ approach. We utilise the captive bubble, pendant drop and in-situ 3D micro-Computed Tomography (CT) methods to rigorously characterise a hydrogen-brine-Bentheimer rock system, applicable to high quartz sandstone storage systems generally. The captive bubble method determined the effective contact angle ranged between 29°-39° for pressures 6.89-20.68MPa and salinities from distilled water to 5000ppm NaCl brine. In-situ methods confirmed the water-wet system with the mean of the macroscopic and apparent contact angle distributions being 39.77° and 59.75° respectively. Further confirmation of the water-wet system was provided by curvature analysis of fluid clusters. The pendant drop method determined that IFT decreased with increasing pressure in distilled water from 72.45 mN/m at 6.89MPa to 69.43 mN/m at 20.68MPa. No correlation was found between IFT and salinity for the 1000ppm and 5000ppm brines. Our fundamental studies provide insights into the physics of hydrogen wetting in multiphase environments of subsurface reservoirs. With this, we can make informed estimates of relative permeability and capillary pressure for the hydrogen-brine system to model the storage capacity and withdrawal rate of hydrogen in target reservoirs.

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PROSPECTS OF OBTAINING ALTERNATIVE FUEL FROM VARIOUS BIOMASS AND WASTE SPECIES IN AZERBAIJAN

Alternative Energy and Ecology (ISJAEE) ◽

10.15518/isjaee.2019.01-03.025-041 ◽

2019 ◽

pp. 25-41

Author(s):

O. M. Salamov ◽

F. F. Aliyev

Keyword(s):

Power Plants ◽

Energy Intensity ◽

Oil And Gas ◽

Renewable Energy Sources ◽

Calorific Value ◽

High Energy ◽

Energy Sector ◽

Energy Sources ◽

Mineral Fertilizers ◽

Gaseous Fuels

The paper discusses the possibility of obtaining liquid and gaseous fuels from different types of biomass (BM) and combustible solid waste (CSW) of various origins. The available world reserves of traditional types of fuel are analyzed and a number of environmental shortcomings that created during their use are indicated. The tables present the data on the conditional calorific value (CCV) of the main traditional and alternative types of solid, liquid and gaseous fuels which compared with CCV of various types of BM and CSW. Possible methods for utilization of BM and CSW are analyzed, as well as the methods for converting them into alternative types of fuel, especially into combustible gases.Reliable information is given on the available oil and gas reserves in Azerbaijan. As a result of the research, it was revealed that the currently available oil reserves of Azerbaijan can completely dry out after 33.5 years, and gas reserves–after 117 years, without taking into account the growth rates of the exported part of these fuels to European countries. In order to fix this situation, first of all it is necessary to use as much as possible alternative and renewable energy sources, especially wind power plants (WPP) and solar photovoltaic energy sources (SFES) in the energy sector of the republic. Azerbaijan has large reserves of solar and wind energy. In addition, all regions of the country have large reserves of BM, and in the big cities, especially in industrial ones, there are CSW from which through pyrolysis and gasification is possible to obtain a high-quality combustible gas mixture, comprising: H2 + CO + CH4, with the least amount of harmful waste. The remains of the reaction of thermochemical decomposition of BM and CSW to combustible gases can also be used as mineral fertilizers in agriculture. The available and projected resources of Azerbaijan for the BM and the CSW are given, as well as their assumed energy intensity in the energy sector of the republic.Given the high energy intensity of the pyrolysis and gasification of the BM and CSW, at the present time for carrying out these reactions, the high-temperature solar installations with limited power are used as energy sources, and further preference is given to the use of WPP and SFES on industrial scale.

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Comparison of Economical and Technical Photovoltaic Hosting Capacity Limits in Distribution Networks

Energies ◽

10.3390/en14092405 ◽

2021 ◽

Vol 14 (9) ◽

pp. 2405

Author(s):

Samar Fatima ◽

Verner Püvi ◽

Ammar Arshad ◽

Mahdi Pourakbari-Kasmaei ◽

Matti Lehtonen

Keyword(s):

Power Distribution ◽

Renewable Energy Sources ◽

Distribution Networks ◽

Power Distribution Networks ◽

Network Losses ◽

Network Costs ◽

Cost And Benefit Analysis ◽

Cost Parameters ◽

The Cost ◽

Pv Penetration

Power distribution networks are transitioning from passive towards active networks considering the incorporation of distributed generation. Traditional energy networks require possible system upgrades due to the exponential growth of non-conventional energy resources. Thus, the cost concerns of the electric utilities regarding financial models of renewable energy sources (RES) call for the cost and benefit analysis of the networks prone to unprecedented RES integration. This paper provides an evaluation of photovoltaic (PV) hosting capacity (HC) subject to economical constraint by a probabilistic analysis based on Monte Carlo (MC) simulations to consider the stochastic nature of loads. The losses carry significance in terms of cost parameters, and this article focuses on HC investigation in terms of losses and their associated cost. The network losses followed a U-shaped trajectory with increasing PV penetration in the distribution network. In the investigated case networks, increased PV penetration reduced network costs up to around 40%, defined as a ratio to the feeding secondary transformer rating. Above 40%, the losses started to increase again and at 76–87% level, the network costs were the same as in the base cases of no PVs. This point was defined as the economical PV HC of the network. In the case of networks, this level of PV penetration did not yet lead to violations of network technical limits.

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Optimal Planning and Operation of a Residential Energy Community under Shared Electricity Incentives

Energies ◽

10.3390/en14082045 ◽

2021 ◽

Vol 14 (8) ◽

pp. 2045

Author(s):

Pierpaolo Garavaso ◽

Fabio Bignucolo ◽

Jacopo Vivian ◽

Giulia Alessio ◽

Michele De Carli

Keyword(s):

Renewable Energy ◽

Power Distribution ◽

Energy Demand ◽

Renewable Energy Sources ◽

Energy System ◽

Distribution Networks ◽

Building Envelope ◽

Net Energy ◽

Technical Equipment ◽

Optimal Planning

Energy communities (ECs) are becoming increasingly common entities in power distribution networks. To promote local consumption of renewable energy sources, governments are supporting members of ECs with strong incentives on shared electricity. This policy encourages investments in the residential sector for building retrofit interventions and technical equipment renovations. In this paper, a general EC is modeled as an energy hub, which is deemed as a multi-energy system where different energy carriers are converted or stored to meet the building energy needs. Following the standardized matrix modeling approach, this paper introduces a novel methodology that aims at jointly identifying both optimal investments (planning) and optimal management strategies (operation) to supply the EC’s energy demand in the most convenient way under the current economic framework and policies. Optimal planning and operating results of five refurbishment cases for a real multi-family building are found and discussed, both in terms of overall cost and environmental impact. Simulation results verify that investing in building thermal efficiency leads to progressive electrification of end uses. It is demonstrated that the combination of improvements on building envelope thermal performances, photovoltaic (PV) generation, and heat pump results to be the most convenient refurbishment investment, allowing a 28% overall cost reduction compared to the benchmark scenario. Furthermore, incentives on shared electricity prove to stimulate higher renewable energy source (RES) penetration, reaching a significant reduction of emissions due to decreased net energy import.

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