Sweep efficiency
Splet13. jun. 2024 · Sweep Program or a Sweep Account or Cash Sweeping is a type of account with a bank or a brokerage house. In such an account, the financial institution decides the minimum amount needed to be kept in that account. And any amount beyond the set … Splet15. avg. 2016 · Local sweep efficiency is evaluated through visualization of the propagation front and compared for pure gas injection, SAG injection, and coinjection. Foam as a mobility-control agent resulted in significantly improved areal sweep and …
Sweep efficiency
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Splet10. okt. 2024 · Viscous fingering is one of the main challenges that could reduce areal sweep efficiency during waterflooding in oil reservoirs. A series of waterflooding experiments were carried out in a Hele-Shaw cell at ambient temperature during which areal sweep efficiency was estimated and techniques to ease the fingering problem were … Splet01. feb. 2013 · The water sweep efficiency is an important parameter in oilfield development. The present method needs to fit the core relative permeability curve, which has the problem of low accuracy and poor ...
Splet15. avg. 2016 · Local sweep efficiency is evaluated through visualization of the propagation front and compared for pure gas injection, SAG injection, and coinjection. Foam as a mobility-control agent resulted in significantly improved areal sweep and delayed gas … SpletThe vertical sweep efficiency, EV, is defined as the fraction of the vertical section of the pay zone that is the injection fluid. This particular sweep efficiency depends primarily on (1) the mobility ratio and (2) total volume injected. As a consequence of the nonuniform permeabilities, any injected fluid will tend to move through the ...
SpletThe volumetric sweep efficiency, Ev, is a measure of the three-dimensional effect of reservoir heterogeneities. It is defined as the product of the pattern areal sweep and the vertical sweep as shown in the following equation: Where, EA = areal sweep efficiency, … SpletAbstract: Sweep efficiency is a very important parameters for development effect evaluation and dynamic analysis of oilfield. For low permeability oilfield, well pattern thickening is one of the most effective means of improving development effectiveness.
Splet09. jun. 2015 · The volumetric sweep efficiency of a given oil recovery drive fluid during a flooding operation within a reservoir or well pattern is defined as .................... (1) where EA is the areal sweep efficiency, and EI is the vertical sweep efficiency.
Splet26. apr. 2024 · As Fig. 11.32 shows, the sweep efficiency as it is related to the scaling parameter is a strong function of mobility ratio. Fig. 11.33 compares the fractional flow of water for a homogeneous system with vertical equilibrium to the fractional flow of water calculated from the original laboratory water/oil relative permeability curves. golden state heart and vascular mountain viewSplet29. apr. 2024 · This cumulated in a higher sweep efficiency, lower residual oil saturation and an improved oil recovery. Types of EOR polymers. Generally, two major classifications exist for polymers used during polymer flooding recovery operations, namely, synthetic polymers and biopolymers. Typical examples of synthetic polymers are polyacrylamides … golden state housing authoritySplet09. jun. 2015 · Various studies have confirmed what would be expected intuitively, that areal sweep efficiency increases with the volume injected and with a lower mobility ratio. Data from model studies that show the influence of mobility ratio and displacement volume on … golden state highlights last nightSpletThere are three potential ways in which polymer flooding makes the oil recovery process more efficient: (1) through the effects of polymers on fractional flow, (2) by decreasing the water/oil mobility ratio, and (3) by diverting injected water from zones that have been swept. hd phone gigaset e560hxSplet27. feb. 2024 · As it is known, many reservoir formations have an irregular permeability profile. Such heterogeneity leads to irregular profiles of the injected water progression and its unequal distribution, if... golden state humane society anaheimSpletThe areal sweep efficiency E A is defined as the fraction of the total flood pattern that is contacted by the displacing fluid. It increases steadily with injection from zero at the start of the flood until breakthrough occurs, after which E A continues to increase at a slower rate. hd phone videoSplet01. nov. 2024 · The microscopic displacement results reveal that when the solution viscosity of the displacement system increases from 0.6 to 30 mPa s, the sweep efficiency increases by 48%. The effect of the polymer solution concentration on the swept volume expansion is evident. golden state humane society long beach