Recent laboratory studies have revealed previously unknown
behaviors in shale gas which unlock secrets of permeability and sweet spots in
shale gas reservoirs. The presentation presents the findings and also goes into
detail about how the new information can be applied in order to potentially
improve recovery in reservoirs. Based on the kinetic theory of gases and using
the regularized 13-moment method, analytical R13 AP model is introduced for
predicting gas apparent permeability of nanoporous shale samples. These samples
are characterized by ultratight pores and may introduce significant rarefaction
effects, especially under the laboratory conditions, which cannot be accounted
for in the classical hydrodynamic equations. Due to the significance of the rarefaction
effects, measured values of the gas apparent permeability depend on the
operating parameters, such as pressure and temperature, and gas type in
addition to pore size. The R13 AP model incorporates these parameters and can
predict the apparent permeability for Knudsen numbers up to unity.
Shale apparent permeability
R13 AP model
20 minute video lectures
Since its founding in 1917, the American Association of Petroleum Geologists has been a pillar of the worldwide scientific community. The original purpose of AAPG, to foster scientific research, to advance the science of geology, to promote technology, and to inspire high professional conduct, still guides the Association today.
AAPG provides publications, conferences, and educational opportunities to geoscientists and disseminates the most current geological information available to the general public.
As the world's premier professional association for explorationists, AAPG is about the science of petroleum geology.
It's also about the people.
AAPG's membership is made up of more than 40,000 members in 129 countries in the upstream energy industry who collaborate – and compete – to provide the means for humankind to thrive.
AAPG provides the network of communications that allow those professionals to succeed.
We invite you to see who we are, what we are about and to contact us for membership information or details about the many services we provide.
Association website: AAPG