... Abstract Surfactant-based EOR has gained prominence, especially in recent years for improving recovery from unconventional reservoirs. Recent studies have indicated that surfactants increase production through a wettability alteration mechanism. In addition, surfactant driven IFT reduction...

... Abstract Surfactants are among the most common additives utilized in the oil industry. One focus of industry investigations in unconventional liquid-rich reservoirs is surfactant-mediated wettability alteration to enhance hydrocarbon recovery. Previous experimental studies and published field...

... by wettability alteration, cleanup and IFT reduction, maximizing well performance after stimulation. drillstem/well testing united states government directional drilling upstream oil & gas fracturing fluid complex reservoir equation of state geologist geology tracer test analysis drillstem...

... one year and project IRR in excess of 80% with only incremental production to-date. These results prove the potential for techno-economic viability of HnP EOR techniques using surfactants for wettability alteration in depleted unconventional oil wells. The well was chosen from a portfolio...

... time. The water cut in all wells decreased to about 96%. The TMO Nanofluid worked by providing a unique long-term wettability alteration, reducing the interfacial tension, allowing the chemicals to be retained in the fracture/reservoir phase. It also functions to remove near-wellbore organic formation...

... paraffin remediation knowledge management wax remediation flow assurance wax inhibition complex reservoir scale remediation production chemistry scale inhibition deposition spe annual technical conference wettability alteration asphaltene inhibition oil production engineered uplift...

... salinity that contains 3,900 ppm of sulfate. SRB is available near a shale oil field in Texas. The other is 1.0 wt% 3-pentanone in SRB (3P-SRB). As a wettability alteration agent, sulfate is highly polar, and 3-pentanone is miscible with oil and only slightly soluble in SRB. Contact angle experiments using...

... the wettability-alteration impact on spontaneous imbibition and compute the incremental oil recovery contributed by different fracturing fluid compositions. Based on the studied case, the oil adhesion to clay can be reduced by tuning the fracturing fluid salinity. The ionic concentrations of 2.5 wt.% of NaCl...

... Abstract The objective of this work is to determine if the efficacy of CO 2 -based enhanced oil recovery (EOR) techniques for unconventional liquid reservoirs (ULRs) can be enhanced by adding a dilute concentration of a non-ionic wettability-altering surfactant to the CO 2 . Addition of ionic...

... mixed- to oil-wet, making the oil recovery from such formations challenging. The main objective of this research is to investigate a novel class of oxygenated solvents that can enhance the oil recovery from oil-wet rocks by multiple mechanisms, such as wettability alteration, oil-viscosity reduction...

..., wettability alteration and IFT reduction were identified as mechanisms that are effective at enhancing incremental oil recovery beyond the secondary brine mode. After promising laboratory observations, a pilot design area was selected in Saskatchewan. Through a detailed analysis of well communications...

... permeability, low porosity and oil-wet nature of the reservoir rock. Hence, wettability alteration using chemicals could provide a viable chemical enhanced oil recovery method (cEOR) to increase oil production from these reservoirs. In this study a set of customized surfactant based chemical formulations have...

... isotherm measurement also showed a positive correlation between the wettability alteration performance and the amount of surfactant adsorbed. Oil production from spontaneous imbibition was increased seven-fold on the best surfactant tested when compared to the base case. Through numerical upscaling, field...

... Upstream Oil & Gas contact angle correlation enhanced recovery porosity IFT recovery factor wettability experimental data surfactant spontaneous imbibition interfacial tension imbibition wettability alteration reservoir Eagle Ford imbibition experiment capillary pressure...

... Modeling & Simulation hydraulic fracturing fracture complexity complex fracture network imbibition depth complex reservoir wet condition case 3 case 1 EDFM fracture conductivity hydraulic fracture fracture geometry Upstream Oil & Gas natural fracture wettability alteration...

... perform surfactant phase stability, surfactant retention and rock-surfactant interaction related to wettability alteration. Surfactant formulations designed in this work are unique and provide high temperature stability (above 70 °C and up to 120 °C) and high salinity tolerance (> 12 ﹪ TDS and up to 22...

... Upstream Oil & Gas mg 2 enhanced recovery adhesion ion zeta potential oil droplet force curve concentration contact angle mgcl 2 Oil Recovery waterflooding force measurement cacl 2 calcite surface salt solution NaCl solution wettability alteration chalk surface...

... matrix imbibition model is coupled with wettability alteration by low water salinity/surfactant. The simulation results are consistent with the experimental observations reported in the paper and literature. Some insights on the ion/surfactant and rock interactions are drawn and water imbibition volume...

... Wettability measurements can be used to assess primary, secondary, and tertiary recoveries. In this study, wettability alteration during: (1) variable salinity waterflood, (2) variable salinity water with surfactant flood, (3) variable salinity water with CO 2 flood, and (4) variable salinity...

... Fluid Dynamics maturity composition Reservoir Characterization Upstream Oil & Gas porosity contact angle effective stress wettability permeability manco shale core sample core sample fracture stress state wettability alteration Tutuncu permeability anisotropy shale sample Eagle...