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The Effects of Gas Injection on Coalbed Methane Production. A Simulation

Ab Ghani, Nor Muhammad Kamar Ghaz (2013) The Effects of Gas Injection on Coalbed Methane Production. A Simulation. Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

In optimizing the production of coalbed methane, several methods could be taken to increase the recovery process. One of the methods is by injecting gas with competitive adsorption capability compared to methane. Injection of gases such as carbon dioxide and nitrogen is currently a common practice in unconventional oil and gas industry. Apparently, research on the coalbed methane is numerous and actively done in countries with potential coalbed prospect. Historic wells data such as in American basin are very useful as they provide reliable information and variables for further research. Moreover, by conducting investigation on such wells, the understanding of how the gas injection affects the recovery process could be attained. In this research, the focus will be pointed on the usage of nitrogen and carbon dioxide as the injecting gases in San Juan basin production units through computerized simulation. This paper will also outlines comparative evaluation between nitrogen and carbon dioxide injection in coalbed reservoir in order to assess different outcomes from each type of gas injections respectively. In laboratory, experiments have managed to practically prove the different effects posed by both gas injections on coal matrix in terms such as the gas breakthrough time, the partial permeability trend, the displacement effectiveness and gas flooding polarity. However, it is fair to state that simulation is useful tool to estimate and predict the production trend using the real data obtained from laboratory experiments. Hence, it is expected that more information could be interpreted from this research simulation study thus bring out valuable findings to help in forming more solid inferences to what might have not been understood yet in coalbed study. Key words – coalbed methane, enhanced coalbed methane recovery, gas injections, San Juan Basin.

Item Type: Final Year Project
Academic Subject : Academic Department - Petroleum Geosciences - Petroleum Engineering - Modelling and simulation - Basic reservoir simulation
Subject: T Technology > T Technology (General)
Divisions: Geoscience and Petroleum Engineering
Depositing User: Users 2053 not found.
Date Deposited: 18 Nov 2013 15:10
Last Modified: 25 Jan 2017 09:38
URI: http://utpedia.utp.edu.my/id/eprint/10689

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