Experimental verification of CH4-CO2 swap in methane-propane-carbon dioxide mixture hydrates

Download
2014
Abbasov, Abbas
Significant interest has been given to unconventional hydrocarbon resources in recent years. Natural gas hydrates are one of the key components of unconventional hydrocarbon resources to be addressed. However, energy utilization from hydrate reservoirs is challenging and related researches are still being carried out. Recently, a method in which methane gas (CH4) is recovered from natural gas hydrate formations by injection of carbon dioxide (CO2) has been proposed. This method is considered to be a promising solution to simultaneously access an unconventional fossil fuel reserve and reduce atmospheric CO2 increase. In this study, formation of natural gas hydrate in porous media at laboratory conditions was carried out by using a mixture of gases: methane (CH4), propane (C3H8) and carbon dioxide (CO2). Composition of the gas mixture was obtained from the results of the investigations of the Black Sea hydrate depositions, carried out by “The Institute of Marine Sciences and Technology” of Dokuz Eylul University in Izmir, Turkey. The following mole percent of the gases was used throughout experiments in order to simulate hydrate reservoir conditions of the Black Sea: CH4 (95%), C3H8 (3%) and CO2 (2%). It was shown that CH4-CO2 swap process takes place in CH4-C3H8-CO2 mixture hydrates as in the case of pure methane hydrates. Based on the results of this study, it was also observed that injection of CO2 into hydrate media caused release of propane which exhibits sII type hydrate structure.

Suggestions

Critical evaluation of the energy resources of Turkey with respect to the world prospects
Aydemir, Mehmet Olcay; Mehmetoğlu, Mustafa Tanju; Department of Petroleum and Natural Gas Engineering (2010)
Existing petroleum and natural gas reserves, which are the major supplies of primary energy demand of the world, are cumulated in a few countries. This causes a serious supply security problem for many countries. On the other side, greenhouse gas emissions caused by mainly fossil fuels are gradually increasing to a point which jeopardizes the future of the earth. By now, countries have to consider both their supply security and this global environmental problem while planning their energy future. For Turkey...
Experimental analysis of adsorption capacities and behaviors of shale samples
Merey, Şükrü; Sınayuç, Çağlar; Department of Petroleum and Natural Gas Engineering (2013)
In recent years, unconventional reserves such as shale gas reservoirs have become a major alternative source of energy in the world. It is known that Turkey has shale gas potentials especially in the Southeastern and Thrace region. In shale gas reservoirs, significant amounts of natural gas exist as conventional “free” gas in porous spaces as well as “adsorbed” gas on shale matrix. Understanding adsorption capacities and behaviors of shale gas reservoirs may help exploitation and resource evaluation. In thi...
Application of Hubbert Peak Theory to Stimulate Biogas Production
Zuberi, M. Jibran S.; Fahrioglu, Murat (2015-01-01)
Assessing the amount of fossil fuels remained in the subsurface, specifically oil and gas has been debated extensively since the introduction of Hubbert Peak Theory in 1956. The economic model of Pakistan relies greatly on natural gas. Thus, estimating the volume of natural gas recoverable in the future becomes critical for the development of the country. The main objective of this paper is to examine the applicability of Hubbert Peak Theory in order to determine the ultimate gas recovery under a pessimisti...
Utilization of microorganisms in oil recovery and a laboratory application for Raman crude oil Mikroorganizmalarin petrol uretiminde kullanilislari ve Raman petrolu icin bir laboratuvar uygulamasi
Behlülgil, Ahmet Kemal; Donmez, S. (1992-01-01)
The utilization of microorganisms to overcome various problems encountered in petroleum production is attracting increasing attention in recent years. In this study, one of the methods that uses microorganisms for the enhancement of petroleum recovery, namely, Microbial Enhanced Oil Recovery and its application to Raman oil is discussed. As a result of comparison with the reference experiment, it is observed that the presence of microorganisms caused a 12% increase in oil recovery. This increase is attribut...
Evaluation of limestone incorporated cement compositions for cementing gas hydrate zones in deepwater environments
Hıdıroğlu, İnanç Alptuğ; Parlaktuna, Mahmut; Yaman, İsmail Özgür; Department of Petroleum and Natural Gas Engineering (2017)
One of the potential problems which must be overcome during oil or gas exploration in deepwater environments is to complete the drilling operations without decomposing the gas hydrates. Gas hydrates remain stable as long as the thermodynamic conditions are not changed. But, especially by increasing temperature during drilling operations, there is always a possibility of change in thermodynamic conditions, which will cause decomposition. Another factor which may disturb the thermodynamic conditions is the ev...
Citation Formats
A. Abbasov, “Experimental verification of CH4-CO2 swap in methane-propane-carbon dioxide mixture hydrates,” M.S. - Master of Science, Middle East Technical University, 2014.