... could prevent CO 2 from early breakthrough and facilitate foaming in-situ . The increase in sweep efficiency by NCF-st-CO 2 foam was observed near the producer for both COI and WAG, which was attributed to its better foaming capacity. Film division and behind mainly led to foam generation...

... frequently to monitor water cut performance, and produced water is sampled and analyzed for polymer content. Tracers were pumped pre and post polymer injection startup to compare polymer flood breakthrough timing and sweep efficiency. Polymer injectivity of the horizontal wells drilled in the Schrader Bluff...

... phase CO 2 but remain a flowing liquid otherwise. In this study, we applied this composition-selective trigger to improve the sweep efficiency in CO 2 EOR and sequestration. Benchtop tests were performed to observe the gelation time and strength of gel to optimize the chemical concentrations...

... and design more schemes, based on the successful implement of the experiments. water management complex reservoir flow in porous media enhanced recovery gas injection method carbonate reservoir physical model sweep efficiency water injection fluid dynamics conventional water injection water...

... with the sour gas injection overprint created complex dynamic environment at the subsurface. Special surveillance program was designed to improve understanding of gas front movement through the reservoir, assess vertical and areal sweep efficiency and remaining oil in place in various zones of interest...

... Abstract This abstract is submitted as an addendum to SPE-188853-MS, which deliberate about Improving Sweep Efficiency by Zonal Isolation Using High Expansion Ratio Inflatable Plugs. "M" field contains medium gravity viscous crude (10-20cp) in high permeability sands. Application of EOR...

... Abstract CO 2 foam has been used to improve the sweep efficiency for EOR as a replacement for polymers to avoid potential formation damage. Foams degrade at high temperatures (>212°F), in high-salinity environments, and in contact with crude oil. The present work evaluates nanoparticles...

... and remained the same type with varying WOR, the incremental recovery by alkaline flooding was very small, regardless of whether the viscosities of the emulsions were high or low. A novel mechanism associated with flow re-direction and sweep efficiency improvement was proposed and validated using micromodel...

... Abstract During waterflooding, formation heterogeneity controls water sweep efficiency. The location of water-injection wells and operational parameters should be designed based on the heterogeneity of the formation in order to maximize oil production and to avoid early water breakthrough...

... Abstract Control of wasteful water injection is an important objective in optimizing waterfloods. Inefficiencies related to vertical sweep efficiency and some plausible corrective measures have been adequately covered in the literature. The purpose of this paper is to focus on areal sweep...

... led to the conclusion that waterflooding this and similar thin-bed sandstones with 320-acre patterns can achieve secondary recovery factors of 10 to 25%. Downspacing these fields is not necessary because high vertical sweep efficiency allows for effective floods on this spacing. However, 320-acre...

... and help them to sharpen their analyzing and thinking abilities for a new reservoir engineering era. The young engineers are chartered with the main objectives of reservoir engineers, which is hydrocarbon fluid reservoir sweeping efficiency. After developing a fundamental understanding of geological...

... surfaces to recover more hydrocarbons than previously possible with conventional fluids. Low salinity waterflooding is applied as an enhanced oil recovery method. Lemon, et al. (2011) studied effects of injected-water salinity on waterflood sweep efficiency through induced fines migration...

... in volumetric and aquifer-drive reservoirs. Upstream Oil & Gas Modeling & Simulation Efficiency field team Smalley reservoir pressure Reservoir Characterization Barrier Opportunity efficiency factor consistency check gas reservoir sweep efficiency abandonment pressure reservoir...

... gas fractional flow, total flow rate, and liquid rates. Local sweep efficiency was evaluated through visualization of the propagation of the fluid front and compared for pure gas injection, SAG, and coinjection. Foam as a mobility control agent resulted in significantly improved sweep and delayed gas...

... and lateral sweep, becomes more complex and challenging to model. Water injection is a common practice used to maintain the reservoir pressure and enhance oil sweep; yet sweep efficiency is not always equal, with water tending to move heterogeneously through the reservoir seeking higher permeability pathways...

... Abstract We propose a new strategy for carbon storage in which CO2 is injected into a geologic formation after emplacement of brine containing dispersed surface-modified nanoparticles. This strategy increases the sweep efficiency of CO2 storage in aquifers and enhances the aquifer storage...

... operative cost per incremental oil barrel. waterflooding concentration curler enhanced recovery gel treatment polymer plant viscosity sweep efficiency chemical flooding methods injector oil production progressive cavity pump spe 166255 profile modification polymer flooding pilot polymer...

... Abstract Chemical enhanced oil recovery (EOR) method includes the injection of a mixture of chemicals to improve sweep efficiency and produce residual oil saturation left behind in the swept volume after waterfloods. The way chemical flood works is by the synergistic effect of polymer...

... in this paper, we have observed a ~15–20% increase in production rate. After extensive fundamental research ( 5 ) we have learned many critical aspects of microbial EOR. We have demonstrated two mechanisms that exceeded, in the lab, the targeted increase in the recovery factor. Improved sweep efficiency...