... recovery salinity water flooding concentration composition crude oil reservoir Introduction Many American Midwestern reservoirs contain heavy oil. Kansas is one of those reservoirs. The oil in those reservoirs is not produced naturally. A lot of sucker rod pumps have been installed to produce...

.... drilling fluid chemistry drilling fluid formulation drilling fluid selection and formulation Upstream Oil & Gas drilling fluid property completion microemulsion fluid crude oil near-wellbore damage surfactant surfactant system design damage mechanism drilling fluids and materials formation...

... water saturation sandstone well logging flow rate diesel filtrate Upstream Oil & Gas mechanism experiment crude oil wettability alteration invasion flooding experiment sample ls-1 surfactant capillary pressure OBMF NMR measurement contact angle OBM invasion wettability...

... on more fluids and rock samples of different mineralogy and analyzes their NMRD features with spin relaxation models. The current study obtains the NMRD curves and qualitative affinity/wettability estimation for different fluid/rock system, including brine, mineral oil, crude oil, sandstone, limestone...

... temperatures. To further improve the economics and sustainability of such NanoSurfactants (NS), we developed a continuous and cost-effective synthesis process of petroleum sulfonates, directly from crude oil. The in-house-produced sulfonates were then formulated into a NS solution in high salinity injection...

... Abstract The quest for smart and cost-effective demulsification materials to separate water-in-crude oil (W/O) emulsions is highly desired in the petroleum industry. In this paper, an assessment study was conducted on the potency of coal fly ash (CFA) as a demulsifier for W/O emulsions. To our...

... of supercritical CO 2 and reservoir adaptability of CO 2 waterless fracturing. Supercritical CO 2 has the advantages of good fluidity and strong penetrability, which avail to form a complex network fractures. Through miscible phase with crude oil, absorption gas displacement, and reservoir energy enhancement...

.... Enhanced turbulent mixing of wash water with wet crude oil improves desalting efficiency, resulting in lower desalter outlet salt-in-crude concentration and/or reduced wash water consumption. The compact design of the mixer and the restricted lengths of upstream and downstream straight run piping...

... of North Sea crude oil (NSCO) were used. CaCO 3 nanoparticles of three different sizes of 15-40, 50, and 90 nm were used. Nanoparticles characterization was performed with Transmission Electron Microscopy (TEM). A commercially available sonication equipment, Branson Sonifier® SFX250, was employed...

...% to 20.38%. ASP shows promising technical potential for such low salinity reservoir. Upstream Oil & Gas evaluation core flooding test enhanced recovery asp flooding apparent viscosity chemical flooding methods dissolution time surfactant viscosity crude oil high temperature polymer...

... Abstract Asphaltene aggregation is one of the biggest problems in the oil and gas industry for both upstream and downstream processes. It called the cholesterol of crude oil since it can deposit on the reservoirs pores and block it. It can also plug the production tubes and pipelines which...

... Abstract Carbon intensity (CI) is a quantitative measure of the carbon generated per unit of energy and is a useful way to compare alternative sources of energy or even various crude oils. The CI of oil and gas production varies widely across global oil plays. Life cycle extraction from some...

... in the past seven decades for different geological areas. Nevertheless, these correlations are merely reliable for a specific range of data. Therefore, significant errors might yield when these correlations are applied for different regions and crude oils. This work is the first regional and formal analysis...

... application after water flooding. AAS surfactant showed impressive foamability in NaCl brines, but medium to poor foam stability especially with crude oil. On the other hand, IOS was the best in Deionized Water (DW) especially with crude oil, but poor foamability in brine. The synergism was more obvious...

... for over six months at 100°C. They reduced the seawater-crude oil interfacial tension (IFT) by two to three orders of magnitude or formed oil-in-water emulsions at 100 °C without any mechanical mixing. Transmission electron miscroscopy (TEM) images revealed mostly round particle in the submicron range (10...

... engineers enhanced recovery chemical treatment concentration contact angle measurement trace element wettability reservoir rock formation damage fluid compatibility petrophysical property composition crude oil spiculitic wackstone permeability oilfield chemistry rock/fluid interaction...

..., with maximum additional oil recovery of 16.9% from one of the limestone samples. IFT contact angle measurement recovery seawater Upstream Oil & Gas concentration bulk phase crude oil enhanced recovery iodide ion additional oil recovery salinity wettability waterflooding Brine...

.../polymer SP formulation. The prepared betaine surfactants showed high interfacial activity with several crude oil, reaching ultralow IFT within surfactant concentration range of 0.05%-0.30%. For amidobetaine surfactant, excellent salt resistant property was observed at salinity as high as 200,000 mg/L...

... and effective model to predict Pb and Rs of crude oils based only on oil and gas gravities in addition to the reservoir temperature. This model was developed using data sets collected from published sources. Statistical error analysis was also used to check the validation of the two proposed empirical...

... with energy dispersive spectroscopy (EDS) and apply the developed protocol to study the impact of ions on carbonate rock/crude oil/brine interface at nano-scale. Cryo FIB-SEM preparation and imaging provide pore structure, connectivity and fluids distribution at carbonate pore scale. While, EDX analysis gives...