scholarly journals Hydrocarbon and Carbon Dioxide Fluxes from Natural Gas Well Pad Soils and Surrounding Soils in Eastern Utah

2017 ◽  
Vol 51 (20) ◽  
pp. 11625-11633 ◽  
Author(s):  
Seth N. Lyman ◽  
Cody Watkins ◽  
Colleen P. Jones ◽  
Marc L. Mansfield ◽  
Michael McKinley ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Natural Gas ◽  
Carbon Dioxide Fluxes ◽  
Gas Well

A CASE STUDY OF A CARBON DIOXIDE WELL TEST

2007 ◽  
Vol 47 (1) ◽  
pp. 239
Author(s):  
J.Q. Xu ◽  
G. Weir ◽  
L. Paterson ◽  
I. Black ◽  
S. Sharma
Keyword(s):  
Carbon Dioxide ◽  
Natural Gas ◽  
Large Scale ◽  
Surface Flow ◽  
Phase Changes ◽  
Co2 Production ◽  
Research Centre ◽  
Well Test ◽  
Cooperative Research ◽  
Gas Well

This paper reports on the planning, procedure, results and analysis of a carbon dioxide (CO2) well test performed on Buttress–1, a well located in the Otway Basin, Victoria, Australia. A large-scale pilot study of CO2 sequestration is planned by the Australian Cooperative Research Centre for Greenhouse Gas Technologies (CO2CRC) in this area, which will involve, inter alia, taking CO2 from the Buttress reservoir and injecting it into a nearby depleted gas field. Understanding the production characteristics of this well is important to the success of this pilot, which forms part of a more extensive study to establish viable means to mitigate CO2 emissions to the atmosphere. This general backdrop forms the motivation for this study.Testing comprised of a standard suite of draw-downs and build-ups to determine reservoir/well characteristics, such as the well deliverability, the non-Darcy skin coefficient and the average reservoir permeability and volume.Compared to the wealth of experience developed over many years in testing oil and gas wells, the collective experience in CO2 well testing is extremely limited. The distinguishing features between this test and those of a typical natural gas well test need to be emphasised. Although, in general, flow testing a CO2 well should be similar to testing a natural gas well, differences in the thermodynamic properties of CO2 affect the analysis of the well test considerably. In particular, the non-Darcy skin effect is more pronounced and the wellbore and surface flow can involve dramatic phase changes, such as the formation of ice. Also, since CO2 is more compressible than a typical natural gas, the accurate measurement of the flow rate becomes more challenging. It is also apparent that the use of pseudo pressure, as opposed to simpler methods of dealing with the pressure dependency of key properties, is essential to the successful analysis of the pressure response to the CO2 production.

Combustion as a measure to mitigate greenhouse gas emissions from natural gas well blowouts

2021 ◽  
Vol 19 (1) ◽  
pp. 93-100
Author(s):  
Marvin Du
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Global Warming ◽  
Natural Gas ◽  
Greenhouse Gases ◽  
Global Warming Potential ◽  
Time Horizon ◽  
Intergovernmental Panel ◽  
Gas Well ◽  
Greenhouse Emissions

Natural gas well blowouts can release a large amount of methane along with other greenhouse gases. According to the Intergovernmental Panel on Climate Change, the global warming potential (GWP) of fossil methane is 30 times higher than that of carbon dioxide in a 100-year time horizon. Here, we show that combustion can be used as a means to significantly reduce the global warming effect of greenhouse emissions from gas well blowouts: up to 90 percent of the effect can be eliminated by combusting the released natural gas. The 2015 Aliso Canyon storage well blowout is used as an example.

scholarly journals Carbon dioxide fluxes from contrasting ecosystems in the Sudanian Savanna in West Africa

2015 ◽  
Vol 10 (1) ◽  
Author(s):  
Emmanuel Quansah ◽  
Matthias Mauder ◽  
Ahmed A Balogun ◽  
Leonard K Amekudzi ◽  
Luitpold Hingerl ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
West Africa ◽  
Carbon Dioxide Fluxes

Thermodynamic Studies of Iron Carbonate Solubility in Aqueous Monoethylene Glycol Mixtures and CO2 Atmosphere

2016 ◽  
Vol 830 ◽  
pp. 134-138 ◽  
Author(s):  
Camila Senna Figueiredo ◽  
Jailton Ferreira do Nascimento ◽  
Rony Oliveira de Sant'ana ◽  
Deborah Cordeiro de Andrade ◽  
Zaniel Souto Dantas Procópio ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Natural Gas ◽  
High Capacity ◽  
Gas Production ◽  
Aqueous Mixtures ◽  
Iron Carbonate ◽  
Low Viscosity ◽  
Carbon Dioxide Atmosphere ◽  
Equilibrium Data ◽  
Monoethylene Glycol

Monoethylene glycol (MEG) is being widely applied as thermodynamic inhibitor to avoid formation of natural gas hydrates. High hydrophilicity, low toxicity, low viscosity, low solubility in liquid hydrocarbons and high capacity of dissolving salts are advantageous for the use of MEG in the natural gas production. In addition, MEG recovery can be easily achieved considering its low volatility in relation to water, which makes the process economical and environmentally feasible. The reuse of MEG is being theme of research and phase equilibrium data for the involved species are required. In this work, a experimental procedure to synthetize iron carbonate and, afterwards, determine its solubility in aqueous mixtures of MEG in the presence of carbon dioxide atmosphere have been developed. Furthermore, a series of solubility data has been measured. This work presents a worthy contribution to the description of iron carbonate aqueous solubilities in the presence of MEG and carbon dioxide, regarding the instability of the salt to respect of oxidation. Subsequently, the knowledge of the behavior of the iron carbonate solubilities is useful for the industrial unities of production of natural gas and recovery of MEG.

Energy and Exergy Analyses of a Power Plant With Carbon Dioxide Capture Using Multistage Chemical Looping Combustion

2016 ◽  
Vol 139 (3) ◽  
Author(s):  
Bilal Hassan ◽  
Oghare Victor Ogidiama ◽  
Mohammed N. Khan ◽  
Tariq Shamim
Keyword(s):  
Carbon Dioxide ◽  
Power Plant ◽  
Natural Gas ◽  
Co2 Capture ◽  
Power Plants ◽  
Waste Heat ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Operating Pressure ◽  
Efficiency Gain

A thermodynamic model and parametric analysis of a natural gas-fired power plant with carbon dioxide (CO2) capture using multistage chemical looping combustion (CLC) are presented. CLC is an innovative concept and an attractive option to capture CO2 with a significantly lower energy penalty than other carbon-capture technologies. The principal idea behind CLC is to split the combustion process into two separate steps (redox reactions) carried out in two separate reactors: an oxidation reaction and a reduction reaction, by introducing a suitable metal oxide which acts as an oxygen carrier (OC) that circulates between the two reactors. In this study, an Aspen Plus model was developed by employing the conservation of mass and energy for all components of the CLC system. In the analysis, equilibrium-based thermodynamic reactions with no OC deactivation were considered. The model was employed to investigate the effect of various key operating parameters such as air, fuel, and OC mass flow rates, operating pressure, and waste heat recovery on the performance of a natural gas-fired power plant with multistage CLC. The results of these parameters on the plant's thermal and exergetic efficiencies are presented. Based on the lower heating value, the analysis shows a thermal efficiency gain of more than 6 percentage points for CLC-integrated natural gas power plants compared to similar power plants with pre- or post-combustion CO2 capture technologies.

scholarly journals Resolving space and time variation of lake-atmosphere carbon dioxide fluxes using multiple methods

2020 ◽  
Author(s):  
Angela K Baldocchi ◽  
David E Reed ◽  
Luke C Loken ◽  
Emily H. Stanley ◽  
Hayley Huerd ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Time Variation ◽  
Multiple Methods ◽  
Carbon Dioxide Fluxes ◽  
Space And Time

scholarly journals Soil carbon dioxide fluxes to atmosphere: the role of rainfall over CO2 transport

2020 ◽  
pp. 104854
Author(s):  
Isabelle Delsarte ◽  
Grégory Cohen ◽  
Marian Momtbrun ◽  
Patrick Höhener ◽  
Olivier Atteia
Keyword(s):  
Carbon Dioxide ◽  
Soil Carbon ◽  
Carbon Dioxide Fluxes ◽  
Soil Carbon Dioxide ◽  
Co2 Transport

scholarly journals Carbon dioxide fluxes increase from day to night across European streams

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Katrin Attermeyer ◽  
Joan Pere Casas-Ruiz ◽  
Thomas Fuss ◽  
Ada Pastor ◽  
Sophie Cauvy-Fraunié ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Large Scale ◽  
Carbon Dioxide Flux ◽  
Time Of Day ◽  
Night Time ◽  
Carbon Dioxide Fluxes ◽  
Large Scale Assessment ◽  
Air Interface ◽  
Flux Variability

AbstractGlobally, inland waters emit over 2 Pg of carbon per year as carbon dioxide, of which the majority originates from streams and rivers. Despite the global significance of fluvial carbon dioxide emissions, little is known about their diel dynamics. Here we present a large-scale assessment of day- and night-time carbon dioxide fluxes at the water-air interface across 34 European streams. We directly measured fluxes four times between October 2016 and July 2017 using drifting chambers. Median fluxes are 1.4 and 2.1 mmol m−2 h−1 at midday and midnight, respectively, with night fluxes exceeding those during the day by 39%. We attribute diel carbon dioxide flux variability mainly to changes in the water partial pressure of carbon dioxide. However, no consistent drivers could be identified across sites. Our findings highlight widespread day-night changes in fluvial carbon dioxide fluxes and suggest that the time of day greatly influences measured carbon dioxide fluxes across European streams.

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