Analysis of carbon dioxide sequestration in shale gas reservoirs by using experimental adsorption data and adsorption models

Merey, Sukru
Sınayuç, Çağlar
For carbon dioxide (CO2) sequestration in depleted shale gas reservoirs or CO2 injection as an enhanced shale gas recovery technique, it is important to understand the adsorption mechanism in these reservoirs. In this study, experimental adsorption measurements for Dadas shale samples were conducted at 25 degrees C, 50 degrees C, and 75 degrees C up to approximately 2000 psia by using pure CO2 (maximum adsorption capacity 0.211 mmol/g at 25 degrees C) and pure methane (CH4) (maximum adsorption capacity 0.0447 mmol/g at 25 degrees C). By using Langmuir isotherm and Ono-Kondo lattice models (three-layer and monolayer), experimental adsorption results were evaluated and adsorption isotherms were constructed. It was concluded that Ono-Kondo monolayer model is really capable of fitting adsorption isotherms, especially at high pressures for CO2 adsorption. For initial gas-in place calculations, the equations used by the help of Langmuir isotherm were modified with Ono-Kondo monolayer model and proposed to calculate the amount of CO2 that might be stored as adsorbed and free gas in depleted shale gas reservoirs. For the case in this study, it was calculated that adsorbed gas concentration changes from 39.2% to 71.8% between 5000 psia and 500 psia. Moreover, binary mixture Ono-Kondo monolayer model was used to evaluate the adsorption isotherm of CO2 CH4 mixtures by using their pure adsorption experimental data. This data is useful if there is a purpose to inject CO2 as an enhanced shale gas recovery technique because of the adsorption capacity difference between CH4 and CO2.


Adsorption behaviour of shale gas reservoirs
Merey, Sukru; Sınayuç, Çağlar (2018-01-01)
Experimental adsorption measurements for one shale sample were conducted at 25 degrees C, 50 degrees C and 75 degrees C up to 2,000 psia by using pure methane (CH4) and pure carbon dioxide (CO2) to understand the behaviour of CH4 and CO2 adsorption on shales. The effects of temperature and pressure on CH4 and CO2 adsorption on the shale sample were observed. When temperature decreases from 75 degrees C to 25 degrees C, the adsorption capacity increases for both CH4 and CO2 adsorption. As pressure increases,...
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Bender, Serdar; Akın, Serhat (2017-08-01)
The combination of carbon dioxide enhanced oil recovery (CO2-EOR) and permanent CO2 storage in mature oil reservoirs has the potential to provide a critical near-term solution for reducing greenhouse gas (GHG) emissions. This solution involves the combined application of carbon capture and storage from power generation and other industrial facilities with CO2-EOR. In order to reduce CO2 capture costs flue gas, which consists mainly of N-2 and CO2, injection has been proposed. The main aim of this research i...
Investigation of the interaction of CO₂ and CH₄ hydrate for the determination of feasibility of CO₂ storage in the Black Sea sediments
Örs, Oytun; Sınayuç, Çağlar; Department of Petroleum and Natural Gas Engineering (2012)
Recently, carbon dioxide injection into deep sea sediments has become one of the carbon dioxide mitigation methods since carbon dioxide hydrates are stable at the prevailing pressure and temperature conditions. The Black Sea, which is one of the major identified natural methane hydrate regions of the world, can be a good candidate for carbon dioxide storage in hydrate form. Injected carbon dioxide under the methane hydrate stability region will be in contact with methane hydrate which should be analyzed tho...
Analysis of pressure behaviors and flow regimes of naturally and hydraulically fractured unconventional gas reservoirs using multi-linear flow regimes approach
Al-Rbeawi, Salam (2017-09-01)
This paper targets the applicability of multi-linear flow regimes approach in gas reservoirs having multiple porous media: matrix, natural fractures, and hydraulic fractures. The approach attempts to understand pressure profiles and flow regimes developed in some of unconventional shale layers that have already been naturally fractured. In this paper, the main focus is given to fluid flow phenomenon from the matrix towards naturally induced fractures and from these fractures to the hydraulic fractures. Stud...
Experimental and numerical modeling of direct injection of CO 2 into carbonate formations
Izgec, O.; Demiral, B.; Bertin, H.; Akın, Serhat (Society of Petroleum Engineers (SPE); 2006-11-20)
Sequestration of carbon dioxide in geological formations is an alternative way to manage the carbon emitted by combustion of fossil fuels. Results of an experimental and numerical modeling study aiming to investigate the important aspects of injection of CO2 in carbonate formations are presented. Different from sandstones, in carbonates surface reaction rates are very high, so mass transfer often limits the overall reaction rate, leading to highly non-uniform dissolution patterns. Often, large flow channels...
Citation Formats
S. Merey and Ç. Sınayuç, “Analysis of carbon dioxide sequestration in shale gas reservoirs by using experimental adsorption data and adsorption models,” JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING, pp. 1087–1105, 2016, Accessed: 00, 2020. [Online]. Available: