Title: Adsorption behaviour of shale gas reservoirs

Authors: Sukru Merey; Caglar Sinayuc

Addresses: Petroleum and Natural Gas Engineering Department, Middle East Technical University, 06800 Cankaya/Ankara, Turkey ' Petroleum and Natural Gas Engineering Department, Middle East Technical University, 06800 Cankaya/Ankara, Turkey

Abstract: Experimental adsorption measurements for one shale sample were conducted at 25°C, 50°C and 75°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°C to 25°C, the adsorption capacity increases for both CH₄ and CO₂ adsorption. As pressure increases, adsorption capacity increases then become constant for CH₄ adsorption. However, for CO₂ adsorption, adsorption increases with pressure until certain value then it decreases suddenly. By using experimental adsorption capacities, adsorption behaviour of shale gas reservoirs was observed. [Received: August 18, 2015; Accepted: October 5, 2016]

Keywords: adsorption; shale gas; CH₄ adsorption; CO₂ adsorption; CO₂ sequestration.

DOI: 10.1504/IJOGCT.2018.089941

International Journal of Oil, Gas and Coal Technology, 2018 Vol.17 No.2, pp.172 - 188

Received: 13 Aug 2015
Accepted: 05 Oct 2016
Published online: 26 Feb 2018 *

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