Abstract Nari Formation is considered as one of the most important oil and gas exploration targets. These fine-grained tight sandstone reservoirs face enormous challenges due to their extremely low matrix porosity permeability. Hence, in this regard, study was carried out collect high-quality data on petrophysical properties along with mineralogy microstructural characteristics diagenesis. The ...

Introduction: Most asteroids for which porosities have been inferred have porosities ranging from 20% to >50%, with a mean of ~30% porosity [1]. Porosity significantly affects the physical properties of rocks, including the strength, thermal conductivity, seismic velocity, and dielectric permeability. Some asteroids have high enough porosities to affect their internal structure, gravitational f...

The microscopic pore-throat structure of low-porosity and ultralow permeability sandstone reservoirs controls the seepage characteristics, which directly affects water injection development efficiency oilfields. Different from typical tight reservoirs, macropores mesopores are more developed in this type reservoir, changes dominance micropores over capacity. Based on full-range characterization...

BACKGROUND Serum β-trace protein (βTP, MW 23-29 kDa) is a marker of GFR impairment in renal patients. Recent papers propose to predict residual renal function (RRF) in maintenance haemodialysis (MHD) patients from serum concentrations of βTP and other small proteins, avoiding the collection of urine. Few data are available on the removal of βTP in patients treated with dialysis membranes with d...

Formation of biofilm within a porous matrix reduces the pore size and the total open space of the system, altering the porosity and permeability of the medium. This change in the pore size distribution can be quantified by expressing the porous structure with a proper geometrical model. A set of pertinent multispecies biofilm models is used to arrive at the dynamic biofilm thickness distributio...

As oil and gas production from conventional reservoirs is declining and oil price is going up, unconventional mudstone reservoirs (“shale-gas”) are becoming more important. However, while their characterization is of utmost importance for production planning, these low permeability rocks are very challenging to characterize due to their complex nano-scale pores and mineral structure. 3D imaging...

With the recent boom in US shale gas production, optimal development of these assets has become a topic of significant interest. In addition to the complex physics typically associated with shale plays, field development optimization can be a challenging problem itself when binary, integer and continuous variables are concurrently present. For complex problems of this nature, it is appropriate ...