...Polymer Properties Grid Dimensions and Layering Abstract This paper discusses the design and implementation of a Single Well Chemical Tracer Test (SWCTT) to evaluate the efficacy of a lab-optimized surfactant-polymer formulation for the Raudhatain Lower Burgan (RALB) reservoir in North...

... water. Use of an inverter surfactant accelerates the inversion of the polymer emulsion. For this study two highly efficient inverter surfactants at different price level were selected and their impact on the performance of an acrylamide-based emulsion copolymer was investigated. Polymer solutions...

... Surfactant losses in a reservoir can occur by adsorption onto the rock, phase trapping (surfactant trapped in the oil phase), phase separation and precipitation by multivalent cations. By and large, surfactant loss in a reservoir due to phase trapping, phase separation, and precipitation can...

..., with a resistivity of 18.2 MΩ cm at 25°C. Solutions were prepared and placed at 25°C for 1 day. The compatibility of surfactant and polymer mixtures in brines with different salinities was observed visually. Table 1 Compositions of injection water Composition Concentration (ppm) Na...

... the volume of trapped gas within the liquid phase in porous media, the gas apparent viscosity increases and the gas relative permeability decreases and, eventually, the gas mobility decreases ( Falls et al. 1988 ). Surfactants are the main chemicals used to generate foams. However, the generation...

...Scaling Potential Due to ASP interaction with Reservoir Rocks and Formation Fluids Abstract An inverted 5-spot Alkaline Surfactant Polymer (ASP) pilot is planned for a giant sandstone reservoir in North Kuwait. Despite the development of a robust lab-optimized ASP formulation at reservoir...

... Abstract The potential of CEOR application in mature oil fields can be investigated using sector models of an appropriate boundary conditions. In this paper, we present an evaluation of feasibility study of surfactant and estimation of the incremental recoverable oil in a mature Libyan oil...

... Abstract Foam enhanced oil recovery techniques involving super critical CO 2 with surfactants are becoming popular these days due to the ability of foam to appreciably overcome problems like gravity override and viscous fingering. Foam lowers the mobility of the injected fluid consequently...

... sweep with modified brines, given the viscosity and density differences relative to formation brine, requires careful assessment. New polymers and surfactants are expanding the technical window of opportunity, currently chemical EOR in these environments is still commercially challenged. EOR technology...

... Abstract The steam-foam process is an Enhanced Oil Recovery (EOR) method which aims to improve the performance of a traditional steam drive by using a foaming surfactant. A Canadian thermal project under development in NW Alberta, which will use steam drive to recover extra heavy oil from...

... conditions. The next phase would be implementing a waterflood case in laboratory scale to inject biodiesel into synthetic and actual porous medium resembling what is found in CHOPS reservoirs and evaluate the effectiveness of using this type of surfactant in CHOPS and Post-CHOPS applications. Table 2...

..., the effluent was collected using a fraction collector. The effluent was later analyzed. Titration using a Metrohm Titrando 836 equipped with a Metrohm 815 robotic USB sample processor was performed to determine surfactant and alkali concentrations. Surfactant was titrated with Tegotrant A100 and alkali...

... ), and the adsorption of surfactant ( Shah 1977 ) on the rock surface. With an adsorption rate of one milligram surfactant per gram rock, up to one third of the value of the recovered oil in the EOR stage can be spent to cover the costs of the adsorbed surfactant ( Wesson and Harwell 2000 ). A chemistry-related...