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You searched for subject:(Depleted gas reservoir). Showing records 1 – 3 of 3 total matches.

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Delft University of Technology

1. Visser, Thomas (author). Seasonal Hydrogen Storage in Dutch Depleted Gas Reservoirs: A Feasibility Study for The Netherlands.

Degree: 2020, Delft University of Technology

The Netherlands will need to transform her traditionally fossil fueled energy system in the coming decades to achieve the goal of reducing CO2 emissions to net-zero in 2050. Therefore, an increase in renewable energy sources as solar and wind energy in the overall energy mix will be essential. However, due to the highly variable energy production patterns of these renewable energy sources, a primary need for energy storage is created. Since electricity can not be stored on a large enough scale to balance significant energy fluctuations, the need for a gaseous CO2 neutral energy carrier is created. In The Netherlands, this role could potentially be fulfilled by green hydrogen gas. Green hydrogen can be stored in geological formations such as depleted gas reservoirs. Due to the immense storage volumes and frequent occurrence in the Dutch subsurface, depleted gas reservoirs could be an excellent opportunity to serve as large scale energy storage sites. Moreover, underground natural gas storage in gas reservoirs is a proven and used technique in The Netherlands. Utilizing a natural gas reservoir as a hydrogen storage site comes with several challenges. This report provides a full overview of all the challenges with underground hydrogen storage in geological formations as aquifers, depleted gas reservoirs and salt caverns based on literature. In this way, the full potential and risks of using depleted gas reservoirs for this technique is clearly highlighted. Using this overview, a priority scheme for the usage of different geological formations as storage facilities for hydrogen is proposed. In combination with possible meteorological conditions combined with different Dutch policy scenarios, a minimum seasonal storage need of 16 TWh through the use of hydrogen is identified. Using the priority scheme, rock salt caverns are used as much as possible to fulfill the minimal need for seasonal hydrogen storage. By performing an analysis on the potential subsurface storage capacity in The Netherlands, it becomes clear that the Dutch subsurface can not realize more than 12.1 TWh of potential hydrogen storage capacity by only utilizing salt caverns. Since depleted gas reservoirs are identified as the best alternative for underground hydrogen storage, a minimum need for hydrogen storage from Dutch depleted gas reservoirs is estimated at 3.9 TWh in 2050. In this thesis, all physical and chemical aspects that are important during the subsurface storage of hydrogen in porous media are addressed. This leads to the identification of potential losses of hydrogen during the storage of the gas in the depleted gas reservoir. Analyzing all the possible methods leading to potential hydrogen loss shows that on the long term, bacterial conversion seems to be the biggest challenge if no measures against this conversion are taken. Using numerical reservoir simulation as a quantification and sensitivity analysis tool, the hydrodynamic behaviour of hydrogen in contact with other gasses is described. This is done by introducing a dimensionless… Advisors/Committee Members: Hajibeygi, H. (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: Hydrogen; Storage; Depleted gas reservoir; Gravity Number; Reservoir Simulation; The Netherlands; Seasonal storage; Feasibility Study

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Visser, T. (. (2020). Seasonal Hydrogen Storage in Dutch Depleted Gas Reservoirs: A Feasibility Study for The Netherlands. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:84f14de1-74d7-48c5-a5f9-a83a8c9482c4

Chicago Manual of Style (16th Edition):

Visser, Thomas (author). “Seasonal Hydrogen Storage in Dutch Depleted Gas Reservoirs: A Feasibility Study for The Netherlands.” 2020. Masters Thesis, Delft University of Technology. Accessed October 21, 2020. http://resolver.tudelft.nl/uuid:84f14de1-74d7-48c5-a5f9-a83a8c9482c4.

MLA Handbook (7th Edition):

Visser, Thomas (author). “Seasonal Hydrogen Storage in Dutch Depleted Gas Reservoirs: A Feasibility Study for The Netherlands.” 2020. Web. 21 Oct 2020.

Vancouver:

Visser T(. Seasonal Hydrogen Storage in Dutch Depleted Gas Reservoirs: A Feasibility Study for The Netherlands. [Internet] [Masters thesis]. Delft University of Technology; 2020. [cited 2020 Oct 21]. Available from: http://resolver.tudelft.nl/uuid:84f14de1-74d7-48c5-a5f9-a83a8c9482c4.

Council of Science Editors:

Visser T(. Seasonal Hydrogen Storage in Dutch Depleted Gas Reservoirs: A Feasibility Study for The Netherlands. [Masters Thesis]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:84f14de1-74d7-48c5-a5f9-a83a8c9482c4


Delft University of Technology

2. Creusen, Michiel (author). Near wellbore effects induced by CO2 injection and the influence on injectivity in depleted gas reservoirs.

Degree: 2018, Delft University of Technology

Sequestration of carbon dioxide (CO2) in depleted gas reservoirs is an attractive choice, especially in The Netherlands, to reduce CO2 emissions into the atmosphere. Injection of CO2 in the subsurface geological formations can distort local thermal, chemical and geomechanical equilibria. As such, it results in highly coupled (thermo)physical effects in the near wellbore region, referred to as “near wellbore effects”. In this work, qualitative and quantitative descriptions of the near wellbore effects in depleted gas fields on macroscopic scale are provided. The primary focus is on the thermal effects (i.e., Joule-Thomson effect, water vaporization and CO2 dissolution) and specific chemical effects (i.e., salt precipitation and hydrate formation). Occurrence and the corresponding magnitude of certain near wellbore effects influence the injectivity of CO2 both positively and negatively. In several occasions these effects can lead to severe reduction of the injectivity. To accurately model these effects, thermal multi-component multi-phase simulations are conducted using both TOUGH2-ECO2MG and CMG-GEM commercial-grade simulators. Important is that these simulations include precipitation of salt and phase changes of CO2 during repressurization of the reservoir. Extensive sensitivity study on numerous 1D, 2D and 3D reservoirs with various injection parameters and degrees of heterogeneity is carried out. A comprehensive 3D geological model of the nearly depleted P18-4 gas field (located in the Dutch North sea) is also investigated, in order to examine the near wellbore effects in a real-field application. Moreover, the potential control of the near wellbore thermal effects by interplay of controllable operational parameters (e.g. rate, temperature or composition) and the local reservoir pressure and temperature conditions is presented. Results reveal that the high injection rates targeted for real CO2 injection (i.e., 1.1 Mt/yr) in combination with low initial reservoir pressures (> 40 bar) and a large reservoir volume provide favorable conditions for development of predominantly excessive cooling effects (15 oC) near the wellbore. Injection of CO2 in gaseous conditions at low temperatures can cause such strong cooling that hydrate can form, which can potentially jeopardize the injection process due to clogging of the reservoir. However, as for its specific geometry and well location, the thermal effects are significantly less pronounced in the P18-4 field model. Besides, heterogeneity of the formations plays a key role in the distribution of the appearing effects along the wellbore. Overall, for the considered cases, the injectivity is found to be enhanced rather than decreased by the studied near wellbore effects, with the proviso that the conditions in the near wellbore region remain outside the hydrate formation window. Advisors/Committee Members: Hajibeygi, Hadi (mentor), Huijskes, Thijs (mentor), Godderij, Raymond (mentor), Delft University of Technology (degree granting institution).

Subjects/Keywords: CO2 injection; Near wellbore effects; Depleted gas reservoir; CCS; Joule-Thomson cooling; Hydrate; Salt precipitation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Creusen, M. (. (2018). Near wellbore effects induced by CO2 injection and the influence on injectivity in depleted gas reservoirs. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:a1ee8f04-4b75-45aa-b808-451ab383603d

Chicago Manual of Style (16th Edition):

Creusen, Michiel (author). “Near wellbore effects induced by CO2 injection and the influence on injectivity in depleted gas reservoirs.” 2018. Masters Thesis, Delft University of Technology. Accessed October 21, 2020. http://resolver.tudelft.nl/uuid:a1ee8f04-4b75-45aa-b808-451ab383603d.

MLA Handbook (7th Edition):

Creusen, Michiel (author). “Near wellbore effects induced by CO2 injection and the influence on injectivity in depleted gas reservoirs.” 2018. Web. 21 Oct 2020.

Vancouver:

Creusen M(. Near wellbore effects induced by CO2 injection and the influence on injectivity in depleted gas reservoirs. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2020 Oct 21]. Available from: http://resolver.tudelft.nl/uuid:a1ee8f04-4b75-45aa-b808-451ab383603d.

Council of Science Editors:

Creusen M(. Near wellbore effects induced by CO2 injection and the influence on injectivity in depleted gas reservoirs. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:a1ee8f04-4b75-45aa-b808-451ab383603d


Texas A&M University

3. Seo, Jeong Gyu. Experimental and simulation studies of sequestration of supercritical carbon dioxide in depleted gas reservoirs.

Degree: PhD, Petroleum Engineering, 2004, Texas A&M University

he feasibility of sequestering supercritical CO2 in depleted gas reservoirs. The experimental runs involved the following steps. First, the 1 ft long by 1 in. diameter carbonate core is inserted into a viton Hassler sleeve and placed inside an aluminum coreholder that is then evacuated. Second, with or without connate water, the carbonate core is saturated with methane. Third, supercritical CO2 is injected into the core with 300 psi overburden pressure. From the volume and composition of the produced gas measured by a wet test meter and a gas chromatograph, the recovery of methane at CO2 breakthrough is determined. The core is scanned three times during an experimental run to determine core porosity and fluid saturation profile: at start of the run, at CO2 breakthrough, and at the end of the run. Runs were made with various temperatures, 20°C (68°F) to 80°C (176°F), while the cell pressure is varied, from 500 psig (3.55 MPa) to 3000 psig (20.79 MPa) for each temperature. An analytical study of the experimental results has been also conducted to determine the dispersion coefficient of CO2 using the convection-dispersion equation. The dispersion coefficient of CO2 in methane is found to be relatively low, 0.01-0.3 cm2/min.. Based on experimental and analytical results, a 3D simulation model of one eighth of a 5-spot pattern was constructed to evaluate injection of supercritical CO2 under typical field conditions. The depleted gas reservoir is repressurized by CO2 injection from 500 psi to its initial pressure 3,045 psi. Simulation results for 400 bbl/d CO2 injection may be summarized as follows. First, a large amount of CO2 is sequestered: (i) about 1.2 million tons in 29 years (0 % initial water saturation) to 0.78 million tons in 19 years (35 % initial water saturation) for 40-acre pattern, (ii) about 4.8 million tons in 112 years (0 % initial water saturation) to 3.1 million tons in 73 years (35 % initial water saturation) for 80-acre pattern. Second, a significant amount of natural gas is also produced: (i) about 1.2 BSCF or 74 % remaining GIP (0 % initial water saturation) to 0.78 BSCF or 66 % remaining GIP (35 % initial water saturation) for 40-acre pattern, (ii) about 4.5 BSCF or 64 % remaining GIP (0 % initial water saturation) to 2.97 BSCF or 62 % remaining GIP (35 % initial water saturation) for 80-acre pattern. This produced gas revenue could help defray the cost of CO2 sequestration. In short, CO2 sequestration in depleted gas reservoirs appears to be a win-win technology. Advisors/Committee Members: Mamora, Daulat D. (advisor), Schechter, David S. (advisor), Blasingame, Thomas A. (committee member), Ikelle, Luc T. (committee member).

Subjects/Keywords: CO2 sequestration; supercritical carbon dioxide; depleted gas reservoir

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Seo, J. G. (2004). Experimental and simulation studies of sequestration of supercritical carbon dioxide in depleted gas reservoirs. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/135

Chicago Manual of Style (16th Edition):

Seo, Jeong Gyu. “Experimental and simulation studies of sequestration of supercritical carbon dioxide in depleted gas reservoirs.” 2004. Doctoral Dissertation, Texas A&M University. Accessed October 21, 2020. http://hdl.handle.net/1969.1/135.

MLA Handbook (7th Edition):

Seo, Jeong Gyu. “Experimental and simulation studies of sequestration of supercritical carbon dioxide in depleted gas reservoirs.” 2004. Web. 21 Oct 2020.

Vancouver:

Seo JG. Experimental and simulation studies of sequestration of supercritical carbon dioxide in depleted gas reservoirs. [Internet] [Doctoral dissertation]. Texas A&M University; 2004. [cited 2020 Oct 21]. Available from: http://hdl.handle.net/1969.1/135.

Council of Science Editors:

Seo JG. Experimental and simulation studies of sequestration of supercritical carbon dioxide in depleted gas reservoirs. [Doctoral Dissertation]. Texas A&M University; 2004. Available from: http://hdl.handle.net/1969.1/135

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