... such as thermocouple temperatures, fluid recovery and gas composition, they also capture changes in the physical properties of the produced oil, such as viscosity and density, which enhances the robustness of the approach and represents an important step towards the development of predictive simulation models...

... requires stable water composition, free of oil. Time resolve fluorescence is sensitive to salinity fluctuations and presence of oil contaminants. These methods are also sensitive to variation of chemical composition of the polymer such as an increase of its hydrolysis degree during propagation...

... Abstract This paper provides an improved understanding of the impact of initial oil composition and residual oil saturation on brine composition and calcite scaling during CO 2 Water-Alternating-Gas (WAG) Enhanced Oil Recovery (EOR) in carbonate reservoirs. It assesses the impact of different...

... Abstract This work describes the experimental characterization of foam flow in a Pre-Salt field, carried out to support the implementation of a FAWAG pilot currently under evaluation. Foam performance was quantitatively determined as a function of surfactant concentration, water composition...

... Abstract This work presents the selection of the most adequate isenthalpic flash method for EOS-based compositional thermal simulation. Five multi-component isenthalpic flash methods were studied. We consider water as a component and the mutual solubility of water and hydrocarbons. A novel...

... kinetics of polyacrylamides, a series of static adsorption experiments are presented for 6 polymer compositions – 3 AA-AMD co-polymers and 3 ATBS-AA-AMD ter-polymers – at initial concentrations of 100, 200 and 300 ppm. The work is then extended to a dynamic system using a novel core flooding procedure...

... sedimentary rock geologist geology surfactant slickwater batch surfactant 2 criteria mudrock enhanced recovery concentration hydraulic fracturing mudstone stability aqueous stability polymer surfactant 1 composition viscosity spe improved oil recovery conference rock type chemical...

... subgroups using the K-means algorithm. Despite limited information on the fluid data, especially in the context of calibration for CO2 floods, we conditioned outcomes using only C7+ composition, utilizing estimators like Machine Learning Based Minimum Miscibility Pressure from our previous study (Sinha et...

... fluid, separated by a pore width threshold of 30 nm. Distinct fluid compositions are observed in macropores and nanopores, with heavy components exhibiting a preference for distribution in nanopores due to stronger fluid-solid interactions compared to light components. During primary production period...

... at isothermal conditions. For non-isothermal conditions, the viscosity of each pseudo-component is to be calculated at different temperatures in a tabulated format. unconventional play geologist equation of state steam-solvent combination geology petroleum play type viscosity composition enhanced...

... mineral sandstone depositional environment permeability composition structural geology rock type enhanced recovery geological subdiscipline porosity inefficiency sedimentology artificial intelligence reservoir characterization ampomah characteristic sedimentary rock waterflooding...

... compositional changes at two different temperatures (110°F and 302°F) and three pressure conditions (250, 700, and 1,200 psi) to represent the effect of steam injection. In addition, heavy oil fractions were characterized by distillation curves analysis. The use of data from laboratory experiments allowed...

... upstream oil & gas drillstem/well testing gas lift drillstem testing injection ga steam-assisted gravity drainage sagd compressors engines and turbines enhanced recovery united states government gas injection method artificial lift system thermal method composition hydrate oil...

... with a large variation in T, P, and compositions, which also demonstrates the type of data needed for an accurate EoS. When input into a numerical simulator, the tuned EoS improves the predictions of the resulting phase behavior (size and shape of the two-phase lobes and three-phase regions) and IFTs...

... Abstract Accurately modeling three-phase relative permeability remains a great challenge to reservoir engineers, in part because of a lack of experimental data to use when verifying model results. This is especially true when the fluids are changing composition, such as for miscible gas...

... Abstract Within reservoirs, spatial variations related to mineralogy and fluid chemistry determine the success of improved oil recovery (IOR) techniques. However, the composition and structure of mineral-adsorbent-fluid interfaces, which fundamentally determine the initial and IOR-altered...

... that in-situ gelation can be controlled primarily by varying the temperature and the Carbamide concentration of the system. GALKA compositions containing a constant amount of Aluminium salt (8.8%) with decreasing amounts of Carbamide (from 30 to 1.87) % showed an increase of gelation time (5 to 13 folds...

... Abstract In our previous paper (SPE-190281-MS), we presented results from a suite of multiscale experiments to understand interactions occurring across crude oil/brine/carbonate rock interfaces with different brine compositions. A new atomic to molecular scale mechanism was proposed based...

... obtained from the water. In this work we perform the screening and evaluation of WAG injection as a recovery mechanism in a heterogeneous carbonate reservoir from the Brazilian pre-salt. For that purpose, we use both analytical and numerical methods, the later using a commercial compositional simulator...

... Abstract The paper describes the development of an EOR project for a supergiant oil rim field, and how the optimal injected gas composition was determined. This includes the laboratory tests to develop a miscible gas equation of state (EOS), cryogenic plant design considerations...