Behzad Partoon

Capturing Carbon Dioxide Through a Gas Hyydrate-based Process

a Research Center for CO2 Capturing, Chemical Engineering Department, Universiti Teknology PETRONAS, 32610 Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia b Institute of Petroleum Engineering, School of Energy, Geoscience, Infrastucture and Society, Heriot-Watt University, Malaysia, No 1 Jalan Venna P5/2, Precinct 5, 62200 Putrajaya, Federal Territory of Putrajaya Malaysia bezadpartoon@gmail.com

Permeability Evaluation in Hydrate-Bearing Sand Using Tubular Cell Setup

Production of natural gas from hydrate-bearing sediments is significantly influenced by permeability variations in the presence of gas hydrate. The quantification on how absolute permeability and relative permeability affect natural gas production from hydrate-bearing sediments is one of the key interests for reservoir engineering studies. This study focuses on the relationship between water saturation, permeability, and porosity in unconsolidated quartz sand. Methane hydrate was formed in quartz sand in high-pressure stainless steel cell using deionized water at 276 K and 8 MPa. The sand pack with porosity of 40% was saturated with 35% water. This study found that porosity of the sample reduced significantly as the sand pack saturated with 35% of water. Porosity reduced from 40 to 37.4% due to the increase of hydrate saturation. Absolute permeability is 108.72 mD, and it was measured before gas hydrate formation. Relative permeability was measured after gas hydrate formation, and results show that relative permeability is 0.49. Formation of hydrate in pores significantly reduces the relative permeability and porosity. Relative permeability from this work is compared with a theoretical model, and the value shows that the relative permeability from this work is close to the value from Masuda model with N = 10.

Impact of Gas Phase Composition on Gas Hydrate Process for Carbon Dioxide Capturing from Gaseous Mixtures

Hydrate based technology is a promising new process for separation of Carbon dioxide from different gas mixtures. The process is claimed to be less energy intensive, green and low technology. In this article effect of composition on the efficiency of such process is discussed. CSMGem software is used for analysis. Results shows that gas phase composition have important impact on the efficiency of process.

Effect of Porosity to Methane Hydrate Formation in Quartz Sand

Natural gas hydrates are recognized as the potential source of methane gas as the current estimates of the global methane hydrates inventory range between 1000 and 10000 Giga Tonnes of carbon. The behavior of methane hydrate formation in porous media is investigated in the Tubular Hydrate Cell at 8 MPa and 276 K. The present work is focused on finding the optimum porosity of the quartz sand with the grain sizes of 600–800 µm that could accelerate the methane hydrate formation. The effect of different porosity (O of 0.32, 0.34, 0.37, and 0.4) on the methane hydrate induction time, methane hydrate saturation, and the time taken for methane hydrates to completely form in the unconsolidated sand is investigated. The result shows that the optimum value for porosity is 32% based on the fastest time taken for complete formation and largest value of methane hydrate saturation which is 33.35 h and 6.34%, respectively, at the specified operating conditions.