Multi-Scale Gas Adsorption: Implications on Gas Recovery and Storage

Earth Science and Engineering and Energy Resources and Petroleum Engineering Graduate Seminar

Speaker: Professor Mohamed Mahmoud, Department of Petroleum Engineering, King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia.

Gas production, optimum enhanced gas recovery, and sequestration processes are significantly dependent on the adsorption/desorption behavior of CH4, H2, and CO2 on the reservoir rock. Most studies in gas engineering apply Langmuir isotherm as an adsorption model. Also, most mathematical and empirical correlations used Langmuir isotherm to model adsorption on shale gas are developed from coal-bed methane which may have very different characteristics and adsorption behavior than other rock types. 

Gas adsorption in different materials can be characterized at different scales. The evaluation of gas adsorption such as methane, carbon dioxide, and hydrogen on different materials is very important. Adsorption studies can reveal one of the most important petrophysical parameters which is the gas adsorption isotherm.  The design process for the gas injection/production for different purposes is mainly controlled by the gas adsorption isotherm in addition to other rock petrophysical properties.  

Gas adsorption can be evaluated using simulations (pore scale or molecular dynamics) and experimental approaches such as adsorption analyzers and NMR. The rock sample nature (powder, intact) and size will affect the adsorption isotherm of different gases at the same conditions. 

This seminar will cover the different techniques used to quantify the gas adsorption in different rocks and the implications of the multi-scale evaluation on gas production/injection in different rocks.   


Dr. Mohamed Mahmoud is currently working as a Professor, department of petroleum engineering, King Fahd University of Petroleum & Minerals, Dhahran, KSA. Dr. Mahmoud areas of research include; reservoir productivity enhancement and advanced petrophysics. Dr. Mahmoud authored or coauthored several journal and conference papers in additions to more than 100 US granted patents.  Dr. Mahmoud has several commercialized patents in the areas of production enhancement and formation damage removal. 

Dr. Mahmoud has carried out several client and governmental funded projects related to productivity enhancement, enhanced oil recovery, and NMR applications in upstream oil and gas industry.

Dr. Mahmoud holds B.S. and M.S. degrees from Suez Canal University, Egypt, and Ph.D degree from Texas A&M University, College Station, Texas, USA. All degrees in petroleum Engineering. Dr. Mahmoud is a member of SPE, SPWLA, and ACS. Dr. Mahmoud acts as editor and editorial board member in several journals.


Professor Mohamed Mahmoud

Event Quick Information

08 Feb, 2023
11:45 AM - 12:45 PM
KAUST, Bldg. 9, Level 2, Lecture Hall 1