1-20 of 190
Keywords: surfactant
Close
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193575-MS
... The main objective of injecting surfactant as an Enhanced Oil Recovery (EOR) mechanism is to reduce oil-water interfacial tension (IFT). The low IFT reduces the residual oil saturation, making more oil available to flow, thus improving the microscopic sweep efficiency. A good surfactant EOR...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193553-MS
... duration, recovery by gravitational segregation is not expected to be a good contributor. Rather, the increase in recovery is mainly due to enhanced capillary imbibition by reduced viscosity. Also indicating the thermal stability of these surfactants at this temperature. Among these chemicals, the two...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193589-MS
... oil extraction. Usually, chemicals that have the capability to alter the wettability are classified as wettability alteration agents. Surfactant is one of the most commonly applied wetting agents, and its effectiveness as a recovery booster has been extensively studied in conventional reservoirs...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193628-MS
... Abstract Switchable surfactants can be reversibly converted between surface active and inactive forms by induced triggers including pH, ozone, ultraviolet light, CO 2 , N 2 and heat. Examples of the CO 2 triggered switchable surfactants are guanidines, imidazoles and amidines. In a typical...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193623-MS
...,eff = 2.057N PO + 9.06 Eq. (4) Cloud Point is the temperature at which a solubility inversion takes place and the surfactant solubility in water is decreased. The working efficiency of flowback aids in hydraulic fracturing operations is expected to be near or below their cloud point. For...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193634-MS
... Two groups of alkyl PO EO ether carboxylate (ECA) surfactants were evaluated. The alcohol structures of the studied carboxylates are shown in Table 1 , with some having only EO units and some having both PO and EO units. The surfactants originate in the acid form that requires them to be...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193594-MS
... blue for B1/B2. Upstream Oil & Gas concentration evaluation surfactant waterflooding adsorption operation cfu mL glutaraldehyde thnm combination microbial control enhanced recovery oilfield injection well water sample biocide treatment chemistry field trial application...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193625-MS
... Abstract Severe formation damage is induced by the invasion of working fluid and the subsequent water blocking. Surface modification by surfactant adsorption can change the wettability of the rock surface to enhance the removal efficiency of reservoir fluid and reduce the water blockage damage...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193595-MS
... Following the crushing and sieving of the rock material, blending aqueous surfactant solution with the rock types for static adsorption tests were set up using this procedure: 1.0 wt% active surfactant solutions were prepared in 1.0 wt% NaCl aqueous solution. Sand sample and...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193572-MS
... Abstract The high efficient foam unloading agent was developed to solve the problem of unloading of liquid loading gas well with high gas temperature, salinity and high concentration of H 2 S gas and gas condensate. The Gemini anionic surfactant with special comb structure was synthesized as...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193534-MS
... Abstract In recent decade, various betaine surfactants have been developed and extensively investigated for binary Surfactant-Polymer flooding (SP flooding) due to their high interfacial activity at oil-water interface, excellent thermal tolerant and salt/divalent ion resistant characteristics...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193546-MS
... The surfactant used was an alpha-olefin sulfonate anionic surfactant with the chemical structure C 14-16 CH=CH-(CH 2 ) n -SO 3 Na [sodium (C14-16) olefin sulfonate], as shown in Figure 1 . Its specific mass is 1.06 g/mL, with a content of 39% (w/w) in aqueous solution. Figure 1...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193568-MS
... combining changes in fluids mobility, macroscopic sweep, interfacial tension, etc. to essentially improve, or extend the economic life of a water flood. It includes flooding with polymer, surfactant, alkaline/surfactant, alkaline-surfactant-polymer (ASP), CO 2 and / or other miscible gases which is often...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193563-MS
... Abstract Viscoelastic surfactants (VES) are important gelling agents in well stimulation treatments. Proper job design requires that the additives create the desired viscosity for effective proppant or gravel pack sand transport. Post-stimulation production enhancement partially relies on the...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 8–9, 2019
Paper Number: SPE-193574-MS
... Viscoelastic surfactants (VES) are relatively short molecules compared to the guar and the polyacrylamide polymers. They were first reported as a standalone fracturing fluid by Samuel et al. (1997 ). Later, they were proven to be a successful additive in limestone acid diversion technology...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 3–5, 2017
Paper Number: SPE-184515-MS
... Three surfactants (S n , S a , S c ) commonly injected during well stimulation were used in this study. They are primarily used as wetting agents in hydraulic fracturing operations. The active contents for S n , S a , and S c were 100, 57, and 80%, respectively. Each surfactant was...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 3–5, 2017
Paper Number: SPE-184508-MS
... "spaghetti ball." Cationic polymers are therefore designed to overcome this limitation, but the internal surfactant used to form a water-in-oil emulsion polymer is not efficient for inverting the emulsion from oil into water under a high-TDS and turbulent flow regime. The new salt-tolerant FR system consists...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 3–5, 2017
Paper Number: SPE-184520-MS
... penetration is desired, such as far-field profile modification in injection wells. These limitations can potentially be overcome through the use of an on-demand deactivation-reactivation process, using host-guest attractions with surfactants and HPCD. One of the first observations made in the inclusion...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 3–5, 2017
Paper Number: SPE-184533-MS
... acid diversion depends highly on the careful selection of suitable surfactant(s) and testing its performance at relevant reservoir conditions. In this paper, we present a systematic study on surfactant screening, foam-bulk stability, and foam behavior inside the porous medium. Glutamic acid diacetic...
Proceedings Papers

Paper presented at the SPE International Conference on Oilfield Chemistry, April 3–5, 2017
Paper Number: SPE-184534-MS
... + ] - [ Cl - ] - 2 [ SO 4 2 − ] Abstract A field trial has been planned for a chemically enhanced oil recovery (EOR) project in Saudi Arabia. The injection chemicals will be a combination of surfactants and polymers. There is a concern that the breakthrough of these...

Product(s) added to cart

Close Modal