... Abstract Due to the strong mobility and energizing effect, CO 2 can be injected into reservoir as a displacement agent to increase oil production in low permeability reservoir. However, low viscosity of pure supercritical CO 2 (SC-CO 2 ) resulted poor sweep efficiency. Therefore...

... method.( Weakley et al.,1960 ) The influences of these two components on the rheological and emulsifying properties were studied to provide a reference for oil displacement effects during the amphiphilic polymer flooding. In order to exclude the effect of solution viscosity on the EOR performance...

... compressibility coefficient ( Du, Wang et al. 2013 , Wang, Zhong et al. 2015 ). Though it has got minimal effects on oil's viscosity but increases the heating radius during steam injection process by decreasing the heat loss. Therefore, there is a real need to introduce a novel heavy-oil recovery approach...

...% 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 viscosity crude oil high temperature chemical flooding methods dissolution time surfactant polymer...

... N c = u μ σ Where u is fluid velocity, μ is viscosity and σ is interfacial tension. Abstract Surfactant addition could improve oil recovery of water flooding in mixed-wet/oil-wet naturally fractured reservoirs by changing wettability or reducing water/oil interfacial...

... With regards to the application of CO 2 foam mobility control, an effective screening and selection of foaming agent should be properly performed based on foaming properties of formulations tested, such as foam stability and foam viscosity under reservoir conditions. A good foaming agent...

... Eq. 3 γ = 8 V D Also, a comparison was made for surfactant 2 and surfactant 3 at 0.50 wt% concentration, 90% quality, and 10 s −1 . Surfactant 3 generated foam with relatively smaller bubbles than that of surfactant 2, Figures 4a and 4b . The measured apparent viscosity...

... is drilled on one face of each core through which the fracturing fluid is pumped. A strong power relation between the viscosity of the fracturing fluid and breakdown pressure was seen. As the viscosity increased, the breakdown pressure increased significantly. Computed Tomography (CT) scan showed...

.... where, μ is the fluid viscosity, ρ is the fluid density, D is the diffusion coefficient of the solute, C o is the bulk concentration of the solute. (2) J = 0.62 C o D 2 / 3 ( μ ρ ) − 1 / 6 ω 1 / 2 Mass transfer in transitional and turbulent flow...

... or reservoir heterogeneity is high such as in carbonates, polymers are exposed to severe loss in viscosity ( Hashmet et al., 2017 ). Although fractures might improve polymer injectivity, the knowledge of polymer in-situ behavior serves as a prime input for fracture design. It is important to keep fractures...

... properties such as weight on bit (WOB), rotary speed (RPM), pump flow rate (Q), standpipe pressure (SPP), drilling torque (τ ) , mud density (MW), plastic viscosity (PV), funnel viscosity (FV), yield point (YP) and solid (%). More than 400 real field data in shale formation are used to predict ROP using...

... Abstract Production of ultra-heavy oils is economically and technically challenging due to the very high viscosity of heavy oils, sharp viscosity increase over a small temperature drop and high operating costs. Reservoir oil can't even be mobilized by steam stimulation only due to inadequate...

... as to traditionally used freshwater-based fracturing fluid. A HP/HT rotational rheometer for viscosity measurements was utilized to assess the stability of the fracturing fluid. Chlorous-acid-based breakers were also tested in the fracturing fluid at various temperatures to assess effectiveness of reducing fluid...

... Vinot et al. (1989) studied sodium silicate gels to improve field-scale conformance during waterflooding. At deployment, the solution needs to be of low viscosity when injected and, with sufficient time as the solution propagates in the reservoir, gelation forms and viscosity increases. A key...

... viscoelastic surfactant fluid for cEOR applications. Dahanayake et al. (2010) realized that to increase the capillary number, surfactant or polymer alone individually does not suffice. So, they claimed that VES can provide both displacement and sweep efficiency. Degre et al. (2011) measured the viscosity...

...Dynamic Viscosity Method Results and Discussion Evaluation of Gelling Time of the novel loss circulation composition Inverted Sealed-Tube Method To evaluate the gelling time, the novel loss cisculation composition was initially subjected to inverted tube tests. The effect...

... Abstract Heavy oil reservoirs embrace 70% of worldwide oil reserves. A lot of challenges face such oil production like its large viscosity which can be reduced under the action of aquathermolysis reaction. Aquathermolysis reaction is the main objective used to analysis and explain the effect...

... including acidizing, hydraulic fracturing, and fluid diversion. For each application, foam should have a minimum acceptable value of viscosity, stability, and/or fluid compatibility. Those values were reviewed from literature and categorized based on reservoir conditions. Also, different rheological models...

... and fluid interaction mechanisms with certain delineative coefficients. Aqueous phase viscosity: In this work, a nonlinear mixing rule is implemented to calculate the aqueous phase viscosity. The viscosity of the aqueous phase changes as a function of polymer concentration according to Equation (1...

... Decreasing the water/oil mobility ratio, and Diverting injected water from zones that have been swept. Due to many reasons, the measured viscosity of a polymer solution using the viscometer and the effective viscosity of the polymer solution that is measured during flow through porous...