...) is used to explicitly solve the particle trajectories in a Lagrangian reference system. The simulation results confirm the hypothesis of fracture initiation and sand failure near the injector. The results show that the polymer-driven fracture initiation is associated with sand shear failure, while...

... nanomaterials to boost the stability of oil in water emulsions created by alkali-polymer flooding has been investigated. Long-term phase behavior experiments and interfacial tension measurements are performed. We evaluate the effects of particle size and surface modification, as well the influence of the alkali...

... distribution of the particles formed in a microemulsion (ME) solution. We also investigate the effects of S wi on effective oil permeability (k o eff ) after the flowback process. The results of leak-off and flowback tests using tap water as the base case shows that k o eff after flowback is lower than...

... Abstract The interplay among reservoir heterogeneities, structural complexities and unfavorable mobility ratios are usually responsible for premature water breakthrough in brown fields across the world. Recently, a deep conformance control technology, known as Thermally Activated Particle (TAP...

.... Abstract Waterflood conformance control due to reservoir heterogeneity is a common challenge to many oilfield developments. This paper describes the application at-scale of a thermally-activated polymer particle system (TAP) for improving waterflood sweep efficiency in the Prudhoe Bay field, Alaska. Since...

... Abstract The goal of this research is to improve oil recovery by reducing bypassing due to fractures, common in carbonate reservoirs. Salinity sensitive polymeric particles (SSPP) are synthesized in this study, which can plug fractures in reservoir rocks and divert fluid flow into the matrix...

...; c is the ‘Kozeny constant’, which is inversely proportional to the square of the average particle diameters (Dullien, 1975 ). enhanced recovery sand production Upstream Oil & Gas simulation model History cold heavy oil production reservoir simulator wormhole oil production rate...

... polymeric particles might reduce the residual oil saturation S or ( Goudarzi et al. 2014 ). To validate this, a series of core flood experiments was carried out in order to study this mechanism in both a heterogeneous Boise outcrop and homogeneous Bentheimer outcrop. Saturation of the cores with highly...

... be successfully used in relative low permeability (230 md) reservoir with harsh conditions for conformance control. waterflooding concentration conformance improvement Fluid Dynamics flow in porous media injection pressure particle size application water production successful field application...

... in the injection water and particle size ( Bai, 2008 ). For the particle size, field experience has demonstrated that mm-sized particle gels are feasible for long-term water flooding reservoirs. The four samples shown in Table 1 were selected for the eight cases. Three of them are mm-sized PPG, and only the WT...

... fracturing conditions once the formation parting pressure is reached, leading to limited degradation of the polymers. The calibrated model was used to investigate the impact of polymer rheology and particle plugging on injectivity and fracture growth. The results of the field test and the simulations...

... Abstract Millimeter-sized (10 um~mm) preformed particle gels (PPGs) have been used successfully as conformance control agents in more than 5,000 wells. They help to control both water and CO 2 production through high-permeability streaks or conduits (large pore openings), which naturally exist...

... of the proposed equations of state, the differences between the experimental and calculated saturation pressure and saturated liquid molar volume of pure water are minimized using a Particle Swarm Optimization (PSO) algorithm. The equations of state presented here enhance the original ones through the addition...

... asphaltene inhibition concentration reservoir simulator particle primary production reservoir model mechanism co 2 model asphaltene precipitation equation oil production asphaltene deposition reservoir composition Asphaltene Precipitation simulator wellbore flocculated asphaltene...

... Abstract Millimeter-sized superabsorbent polymers (SAPs), also called preformed particle gels (PPGs), are gaining attention and popularity for use in conformance-improvement treatments. The strength of PPGs is important to the optimization of their performance as plugging agents. Conventional...

.... However, the measured pressure was almost the same as the expected pressure for the second and third cutting, indicating that the nanogel had already transported through the rock and had been well distributed across its length, except for at the inlet. Dynamic Jamming Ratio (JR) and Particle Pore Throat...

... biosurfactants (rhamnoilpid with C6-C12 long chain fatty acid). Heterogeneous sandpacked column model with three stages nutrients flooding release delaying nutrient solution breakthrough front and enlarged effect range of microorganisms due to viscosity production, particles of cellulose and zoogloea on surface...

... and formulation enhanced recovery montmorillonite signal intensity drilling fluid formulation operation camontmorillonite co 2 zhou drilling fluids and materials carbon dioxide particle montmorillonite alotaibi drilling fluid chemistry saudi arabia government upstream oil & gas na...

... in porous media is critical to their application. This paper presents the results of a study on the adsorption and transport behavior of nanosilica particles in three different porous media: sandstone, limestone, and dolomite. The results revealed that the equilibrium adsorption of the particles...

..., ideal minerals, i.e. model surfaces, to represent the particles found in sandstone, we chose instead to work with real rock samples. This makes our results more comparable with the results of core plug and field tests. The first core plug had been preserved in kerosene soon after drilling. It had...