Abstract Geological hydrogen storage in depleted gas fields represents a new technology to mitigate climate change. It comes with several research gaps, around recovery, including the flow behavior of porous media. Here, we provide first‐published comprehensive experimental study unsteady state drainage relative permeability curves H 2 ‐Brine, on two different types sandstones and carbonate rock. We investigate effect pressure, brine salinity, rock type compare it that CH 4 N at...

As a fixed reservoir rock property, pore throat size distribution (PSD) is known to affect the of fluid saturation strongly. This study aims investigate relations between PSD and oil-water relative permeabilities with focus on efficiency surfactant-nanofluid flooding as an enhanced oil recovery (EOR) technique. For this purpose, mercury injection capillary pressure (MICP) tests were conducted two core plugs similar types (in respect their flow zone index (FZI) values), which selected among...

Carbon dioxide-based enhanced oil-recovery (CO2-EOR) processes have gained considerable interest among other EOR methods. In this paper, based on the molecular weight of paraffins (n-alkanes), pressure, and temperature, magnitude CO2–n-alkanes interfacial tension (IFT) was determined by utilizing soft computing mathematical modeling approaches, namely: (i) radial basis function (RBF) neural network (optimized genetic algorithm (GA), gravitational search (GSA), imperialist competitive (ICA),...

Initial wettability of rock surfaces plays a crucial role in displacement efficiency during core flooding experiments. In this study, linear alkylbenzene sulfonic acid (LABSA) and silica nanoparticles (NPs) were utilized as enhanced oil recovery (EOR) agents to improve from carbonate samples. Prior the experiments, effects presence LABSA SiO2 NPs on oil-water interfacial tension (IFT), alteration, surfactant adsorption evaluated. The results IFT/contact angle measurements showed that by...

Human activities significantly impact on river water quality as a crucial source. A study in the Gamasiab River analyzed samples from 16 points at three time periods, assessing element concentrations. The most polluted station was identified using spectrophotometric testing and treated with natural modified zeolite nanoparticles for purification. Various acid base combinations nanoparticles, optimizing their effectiveness adsorbents through tests under different conditions. Utilizing Design...

Displacement of a wetting by non-wetting fluid in fractured media is process with relevance for many applications, such as storage the subsurface or oil and gas exploitation. How to capture flow open rough-walled fractures on large length scales required applications an question. It highly questionable if two-phase equations can be simplified continuum approaches, established porous media, which would allow coarse spatial resolutions model. For this reason, it necessary develop good...

When it comes to the economic efficiency of oil and gas field development, finding optimum well locations that augment an economical cost function like net present value (NPV) is paramount importance. Well location optimization has long been a challenging problem due heterogeneous nature hydrocarbon reservoirs, criteria, technical uncertainties. These complexities lead enormous number possible solutions must be evaluated using evaluation (e.g. simulator). This makes necessary develop...

Thermodynamic evaluation of a nuclear desalination plant by coupling pressurized water reactor and multi-effect distillation system was performed using new version the Desalination Optimization Program.For energy management plant, all possible configurations between power process were investigated.The software upgraded to study exergy analysis adding related equations.Several important output parameters, such as loss ratio, net efficiency, thermal utilization, total requirement, compared;...

Abstract Energy differences, ΔX S‐t (X = E, H and G) (ΔX X (singlet) ‐X (triplet) ) between singlet (s) triplet (t) states are calculated at B3LYP/6‐311++G (3df,2p). The DFT calculations show that the state of C 4 is a ground with planar conformer respect to its corresponding nonplanar state. Both M (M Si, Ge, Sn Pb) have Four isodesmic reactions presented for determining stability energies, SE. NICS carried out determine aromatic character.

An apparatus for measuring the wicking rise of water in fabrics has been developed and several types were examined. The method is based on electromagnetic field induction due to penetration into capillary spaces fabric samples. system coupled with a personal computer, distance as function time determined. Plain woven samples different weft yarn counts, density, type fiber blend results obtained by measurement compared vapor permeability index data test wettability textile same average...

Summary There are three main reasons that show the necessity of enhanced oil recovery in Iranian fields. Firstly, average factor fields (25–27%) is lower than global average. Secondly, initial energy mature (which second half their natural life and producing major share production) has been dramatically decreased needs additional source. Thirdly, high amount reserve to production crude makes strategic resources for supporting future demands energy. In this study, EOR research center Shiraz...