Shear Rate and Permeability in Water Flooding

Reuvers, Njw Nico; Golombok, M Michael

doi:10.1007/s11242-008-9313-x

Cited by 16 publications

(7 citation statements)

References 11 publications

(11 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effect of this preferential flow can be evaluated by comparing the velocity in each streak with the velocity in the least permeable layer. This results in a dimensionless factor; the ratio of the flow velocities in zones with high and low permeability u hi and u lo at equal pressure gradient (Reuvers and Golombok 2008):…”

Section: Background Reservoir Flowmentioning

confidence: 99%

Sweep enhancers for oil recovery

Santvoort

Golombok

2015

J Petrol Explor Prod Technol

Self Cite

View full text Add to dashboard Cite

The use of viscoelastic sweep improvers to overcome injected fluid diversion is assessed at the low pressure gradients associated with secondary oil production. The flow evolves from Newtonian to non-Newtonian behavior with increasing pressure gradient. Additive concentration determines this transition and controls the effectiveness of selective retardation. This is demonstrated in an experimental simulation of parallel flow in two core samples of different permeabilities. Even at pressure gradients lower than 1.0 bar/m channeling can effectively be reduced and early water breakthrough delayed. This has the potential to greatly increase ultimate oil recovery.

show abstract

Section: Background Reservoir Flowmentioning

confidence: 99%

Sweep enhancers for oil recovery

Santvoort

Golombok

2015

J Petrol Explor Prod Technol

Self Cite

View full text Add to dashboard Cite

show abstract

“…Rather, it is necessary to compute a volume-averaged shear rate magnitude,

{\bar{\overset{γ}{true}}}_{V}

, as a function of the local blood speed using an analytical or empirical expression. In the case of the former, a first-order approximation to the shear rate can be derived from a hydraulic radius model, which, for example, in the principal x– direction gives

u_{0} K_{x x}^{- 1 / 2}

[50]. However, this approximation only accounts for viscous forces and neglects the inertial forces that clearly make an important contribution to the flow within the foam (see Fig.…”

Section: Resultsmentioning

confidence: 99%

Virtual Treatment of Basilar Aneurysms Using Shape Memory Polymer Foam

et al. 2013

View full text Add to dashboard Cite

Numerical simulations are performed on patient-specific basilar aneurysms that are treated with shape memory polymer (SMP) foam. In order to assess the post-treatment hemodynamics, two modeling approaches are employed. In the first, the foam geometry is obtained from a micro-CT scan and the pulsatile blood flow within the foam is simulated for both Newtonian and non-Newtonian viscosity models. In the second, the foam is represented as a porous media continuum, which has permeability properties that are determined by computing the pressure gradient through the foam geometry over a range of flow speeds comparable to those of in vivo conditions. Virtual angiography and additional post-processing demonstrate that the SMP foam significantly reduces the blood flow speed within the treated aneurysms, while eliminating the high-frequency velocity fluctuations that are present within the pre-treatment aneurysms. An estimation of the initial locations of thrombus formation throughout the SMP foam is obtained by means of a low fidelity thrombosis model that is based upon the residence time and shear rate of blood. The Newtonian viscosity model and the porous media model capture similar qualitative trends, though both yield a smaller volume of thrombus within the SMP foam.

show abstract

“…Jones [84] hypothesized that it is possible to employ shear-thickening characteristics to overcome the challenge of preferential flow, which tends to only flow through the high-permeability zones of reservoirs rather than the low-permeability zones, where trapped oils remain upswept. This hypothesis also led the work of Golombok et al [20,85], who carried out experimental investigations on pressure-driven flows within cylindrical glass core samples with different permeability classes. The shear-thickening response that is caused by an associated flow through the high-permeability zones will result in a higher local fluid viscosity when compared to the viscosity of fluid flowing through the low-permeability zones under the same pressure drop.…”

Section: Formation Of Shear-induced Structure (Sis)mentioning

confidence: 87%

Wormlike Micellar Solutions, Beyond the Chemical Enhanced Oil Recovery Restrictions

Nodoushan

Lee

et al. 2019

Fluids

View full text Add to dashboard Cite

While traditional oil recovery methods are limited in terms of meeting the overall oil demands, enhanced oil recovery (EOR) techniques are being continually developed to provide a principal portion of our energy demands. Chemical EOR (cEOR) is one of the EOR techniques that shows an efficient oil recovery factor in a number of oilfields with low salinity and temperature ranges. However, the application of cEOR under the harsh conditions of reservoirs where most of today’s crude oils come from remains a challenge. High temperatures, the presence of ions, divalent ions, and heterogeneous rock structures in such reservoirs restrict the application of cEOR. Polymer solutions, surfactants, alkaline-based solutions, and complex multi-components of them are common chemical displacing fluids that failed to show successful recovery results in hostile conditions for various reasons. Wormlike micellar solutions (WMS) are viscoelastic surfactants that possess advantageous characteristics for overcoming current cEOR challenges. In this study, we first review the major approaches and challenges of commonly used chemical agents for cEOR applications. Subsequently, we review special characteristics of WMS that make them promising materials for the future of cEOR.

show abstract

Shear Rate and Permeability in Water Flooding

Cited by 16 publications

References 11 publications

Sweep enhancers for oil recovery

Sweep enhancers for oil recovery

Virtual Treatment of Basilar Aneurysms Using Shape Memory Polymer Foam

Wormlike Micellar Solutions, Beyond the Chemical Enhanced Oil Recovery Restrictions

Contact Info

Product

Resources

About