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

Available online: 26 Jan 2018 *

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