... analysis, and dynamic viscosity. Moreover, the role of water as an additional hydrogen source was evaluated at 300°C and 6h of the reaction time using different deuterium tracing techniques including FTIR spectroscopy, gas chromatography–mass spectrometry (GC-MS) and isotope analysis for both gases...

... revealed a specific alkali concentration of 7,500 ppm as optimal for the AP slug—the interaction between the alkali-polymer and high Total Acid Number (TAN) dead oil produced emulsions. A noteworthy observation was the micro-instability of these emulsions, evidenced by changes in viscosity and volume over...

... combinations of parameters can reproduce the observed pressure response and thus further decreases the uncertainty on potential skin. However, since the uncertainties relative permeability, permeability and viscosity are difficult to reduce, the remaining uncertainties will always be in the order...

... Abstract Using CO2 as a heat extraction medium from the subsurface offers several compelling advantages. These benefits result from CO2's distinct properties, notably its lower viscosity compared to water, as well as its pronounced density variations under varying pressures. Using CO2...

... geology chemical flooding methods polymer degradation asia government viscosity injection reservoir geologist india government polymer concentration polymer flooding injector polymer injection water-cut reduction oil active aquifer driven reservoir upstream oil & gas...

... methods drillstem/well testing pressure transient testing permeability variation petroleum engineer thickness injection aquifer co2 injection viscosity saturation mobility transient pressure interference deviation europe government production monitoring departure compressibility...

... waterflooding viscosity experiment upstream oil & gas europe government concentration polymer flooding figure 4 fluid dynamics flow in porous media chemical flooding methods in-situ viscosity austria government enhanced recovery micromodel polymer flooding experiment shear...

... that emulsification and transport of the dispersed oil in the presence of polymer can significantly improve oil recovery. In earlier work, we proposed a new mechanistic non-equilibrium model to simulate alkali-polymer processes for different oil viscosities (2000 – 3500 cP at 50°C) with an acid number of around 4 mg...

... hydrocarbon gas can be used as cushion gas. To engineer the UHS process, accurate phase, volumetric and transport behavior ("PVT") of hydrogen-hydrocarbon mixtures is required. In this paper, we develop an EOS and viscosity model to describe the operating envelope of a UHS operation in Austria. Constant...

... (with e.g. rotation speed and viscosity) as numerical simulations. The numerical simulations however indicate that the saturations travel with highly different speeds rather than as a uniformly compressed profile. Especially saturations near the critical saturation are very slow and caused production...

... material properties in the solid-, fluid- and gel-like state, such as viscosity, viscoelasticity, solubility, thermal stability, and mechanical properties. The approach of dispersity modification has been actively developed, with researchers finding a variety of techniques for altering polymer's molecular...

... significantly reduce its gas volume and lead to early water breakthrough during back production. viscosity gas mole fraction flow behaviour water breakthrough natural gas storage co 2 solubility back production scenario upstream oil & gas international journal cushion gas withdrawn...

...) transformations. To validate the analytical solutions, a numerical solution is developed to solve the mass and thermal energy balance equations simultaneously and account for the variation of rock and fluid properties with pressure and temperature. We proposed a correction to fluid viscosity variation as input...

... by Darcy's law: (2) u i = − K λ i ∂ p i ∂ x ,     λ i = k r i μ i ,     ( i = o , w ) where λ i is phase mobility, k ri relative permeability, μ i viscosity and p i pressure. The saturations sum to 1 due to volume...

..., Joule-Thompson coefficient, the isobaric and isochoric heat capacity, viscosity, and thermal conductivity. A temperature span of −10 to 50 °C and a pressure span of 1-300 bara has been set as the target range for pipeline transport. Viscosity and thermal conductivity models have been evaluated...

... production. Spontaneous imbibition to expel oil from the low permeable matrix is a time-dependent process and both injection rate and oil viscosity are important factors affecting the contribution of capillary and viscous forces to the oil production. It is hypothesized that when capillary forces...

... fly ash nanoparticle-stabilized emulsion nanoparticle emulsion stability viscosity emulsion droplet nanoparticle-stabilized emulsion water flooding Introduction With the development of conventional reservoirs in the late stage, the water cut of production fluid remains high, resulting...

... Abstract Heavy oil fields are characterised by complex chemistries and exhibit a wide range of physical properties (especially oil viscosity). This paper describes the development of two innovative and cost-effective data acquisition methods: the optimised use of mud gas data...

..., the oil rate is even lower than that of traditional SAGD. This is mainly because C3 decreases the chamber temperature and the solubility of C3 in heavy oil is low, which results in a relatively higher oil viscosity at the chamber edge compared to other solvents. The differentials between the cases, which...

... of development plan. The results show that the resistance factor has an S-shaped relationship with the pore radius, a linear relationship with the liquid viscosity, an L-shaped relationship with the bubble radius, and an n-shaped relationship with the gas-liquid ratio, and the foam resistance factor...