Abstract To improve the understanding of gas transport processes in tight rocks (e.g., shales), systematic flow tests with different gases were conducted on artificial micro- to nanoporous analogue materials. Due rigidity these systems, fluid-dynamic effects could be studied at elevated pressures without interference poro-elastic effects. Flow narrow capillaries did not reveal any viscosity ano...

Tight gas reservoirs are characterized by single-phase (gas) or two-phase (gas and liquid) flow in extremely low-permeability, highly heterogeneous porous/fractured, and stress-sensitive rock. Gas flow in such tight formations is further complicated by other co-existing processes, such as Klinkenberg effect, non-Newtonian or non-Darcy flow behavior, due to strong interaction between fluid molec...

Permeability is an important parameter in the process of coalbed methane exploitation. To improve production efficiency and explore control mechanism gas flow law coal, permeability helium nitrogen same coal sample was tested under different effective stress (the difference between external pore pressure mass) by using seepage device. Based on theory, interaction stress, adsorption effect Klink...

An improvement of the pulse decay method rock permeability measurement is presented. The technique based on fitting experimental data to analytical and numerical solutions filtration equations derived with regard variation flowing gas properties temperature pressure. A special apparatus software for implementation this were developed. single experiment in which used as a medium enables determin...

Liquid permeability of sedimentary rocks is relevant in several contexts, but gas easier to measure, so liquid typically estimated from via empirical or semiempirical correction procedures. A frequently used and trusted procedure the well-known Klinkenberg correction, which based on pressure dependence permeability. However, gaseous flow-through experiments a series Fontainebleau, Castlegate, B...

Determination of porosity, permeability, and pore volume compressibility of reservoir rocks and those variations with effective stress changes are of great interest in petroleum engineering. This paper has studied the influence of pore types of carbonate reservoir rocks on pore volume compressibility as well as Klinkenberg permeability and porosity at different stress values. In the current stu...

Unconventional gas reservoirs have shown the potential to be the next world primary energy resource and have received a lot of attention in the past few years in the world. Even with the significant progress that has been made world-wide towards commercial development of natural gas from these unconventional resources, understandings or modeling tools of gas flow in these extremely low-permeabi...