... Abstract CO 2 foams have been used for a long time for enhanced oil recovery (EOR) and carbon capture, utilization, and storage. Note that conventional CO 2 foam focuses on mobility control and storage of bare CO 2 . However, this technology has suffered from low storage efficiency and EOR...

.... enhanced recovery proppant hydraulic fracturing fluid dynamics oil phase fracturing materials fracturing fluid presented well-a2 brine porosity dme water saturation tight rock flow in porous media upstream oil & gas water invasion front experiment wettability oil recovery tianbo...

... Abstract Miscible gas injection has become the most used enhanced oil recovery (EOR) method in the oil and gas industry. The deposition and precipitation of aspahltene during the gas injection process is one of the problems during the oil production process. The asphaltene can deposit and plug...

... in the matrix. Nanoemulsion holds the most promising potential in improving tight oil recovery owing to the favorable surface activity and nanoscale droplets, but it still lacks economic and facile methods to fabricate nanoemulsions. Therefore, in this paper, we prepared a kind of O/W nanoemulsion of catanionic...

... Oil recovery consists of three stages: primary recovery, secondary recovery, and enhanced recovery, sometimes named tertiary recovery. In primary recovery, crude oil is displaced from the reservoir to the well because of the effect of the pressure gradient that exists between the downhole...

... will occur. Waterflooding <italic>plus</italic> Abstract Chemical EOR is an increasingly employed approach used to enhance oil recovery by combining changes in fluids mobility, macroscopic sweep, interfacial tension, etc. to essentially improve, or extend the economic life of a water flood...

... Abstract Tight sands are abundant in nanopores leading to a high capillary pressure and normally a low fluid injectivity. As such, spontaneous imbibition might be an effective mechanism for improving oil recovery from tight sands after fracturing. The chemical agents added to the injected water...

... Abstract Foams were introduced to enhanced oil recovery (EOR) for the purpose of improving sweep efficiency via mitigating gas breakthrough. In prior works, well-defined nanocellulose-based nanofluids, which can well stabilize foam film as a green alternative to reduce the environmental impact...

... on improving the steam apparent viscosity in a coreflood study. However, an increase by only one order of magnitude in steam apparent viscosity was observed. Abstract Low steam viscosity during steam injection can cause steam override and channeling issues for heavy oil recovery, resulting in high...

...# 12.82 13.61 20.03 69.95 2# 12.58 13.75 36.28 70.33 3# 12.05 13.14 28.43 71.37 4# 13.28 14.51 28.94 75.30 5# 12.74 14.00 37.93 73.78 Abstract Nanofluid flooding injection technique whereby nanomaterial or nanocomposite fluids for enhanced oil recovery (EOR) have...

... are monoisopropanolamine (MIPA) salt-based. Abstract Adsorption of surfactant onto rock surfaces is dependent upon a number of factors, including characteristics of both the adsorbent and surfactant molecules. Considering that surfactant-based unconventional means to improve oil recovery are strongly dependent...

... Abstract Barium Sulphate (BaSO 4 ) scale is a serious problem that is encountered during oilfield production and has been studied mainly for fields undergoing water flooding. Chemical Enhanced Oil Recovery (cEOR) processes involve interactions between the injected brine and the formation brine...

... of these mixtures for unconventional treatments was examined with regards to emulsion behavior and column-packed oil recovery testing. The results for the S a/c surfactant mixtures show that, compared to parent species, Γ max of the S a/c system is approximately one order of magnitude higher (corresponding...

... Abstract In the field of enhanced oil recovery the engineered/low salinity water injection (EWI/LSWI) is the latest and promising development. Several mechanisms describing the EWI/LSWI process have been suggested in the literature; however, there is no consensus on a single main mechanism...

... Abstract Oil recovery in highly heterogeneous carbonate reservoirs is typically inefficient because of the high permeable fracture networks and unfavorable capillary force resulting from oil-wet matrix. Foam as a mobility control agent has been proposed to mitigate reservoir heterogeneity...

... Abstract Significant work is ongoing within the industry to determine a best practice for maximizing oil recovery from fractured oil-wet shale reservoirs. Rapid decline curves are often observed and water flooding can be largely ineffective because of negative capillary pressure. The goal...

... the Rainbow shales in Canada. Dynamic surface tension measurements and UV-vis data indicated surfactant adsorption could be significantly reduced using PETs based on the competing mechanisms. Additionally, oil recovery laboratory results reveal that surfactants extract more oil in the presence of PETs...

... attenuation coefficient glycerol injection Oil Recovery enhanced recovery viscosity surfactant formulation society of petroleum engineers Introduction Secondary oil recovery from water-wet or mixed wet reservoirs by water flooding leaves significant fraction of the oil initially in place (OIIP...

... Abstract The performance of surfactant-enhanced oil recovery (EOR) in fractured carbonates relies on spontaneous imbibition or low IFT-aided gravity drainage. This work investigated the synergism between wettability effects and IFT reduction mediated by a variety of surfactants through...

... conditions. We also simulated a surfactant flood at higher salinity with lower IFT and compared the results with the low salinity surfactant flood. These results provide new insights into low salinity waterflooding and surfactant flooding. waterflooding concentration composition Oil Recovery...