... the following techniques: Clean out the parent well: Perform a coiled tubing or snubbing clean-out to remove any sand, proppant, or debris from the parent wellbore. Flush the wellbore with treated fluids (acid, solvents, brine, or surfactants) to clear blockages and improve flowback of trapped...

... Abstract A CO2-modified non-ionic surfactant alkyl polyglycoside (APG) was synthesized for consuming CO2 to reduce carbon footprint and improving the performance of the APG surfactant. Commercially available APG was used as a raw material and reacted with CO2 in a solvent mixture containing...

... Abstract Surfactant-polymer (SP) flooding has been considered as an important and high-efficient method to displace the residual oil trapped inside formation rock after initial water flooding. Due to the molecular interactions, some SP formulations exhibit a synergistic effect to further...

... NP NP3 Stable Stable Aqueous stability of surfactant/nanoparticle blend After identifying the stable surfactants and nanoparticles at HTHS conditions, surfactant/NP blends were made to investigate the compatibility between the stable surfactants and the stable nanoparticles...

... In this study, the high-temperature stability of the following polymers was evaluated: diutan gum, scleroglucan, and a synthetic acrylamide-based polymer. Aqueous solutions of polymers and/or foaming surfactants, with or without extra additives, were prepared using deionized (DI) water...

... Surfactant activity was determined using a Mettler Toledo moisture analyzer, model HE53. 0.5 g surfactant solution was added to a tared moisture analyzer and heated to 130°C. Activity was assumed to be the solids remaining after the water evaporated. This paper presents a microemulsion...

... intervention rock type sand pack flowback aid paper flowback aids surfactant enhanced recovery stimulation fluid system tension measurement brine Introduction Abstract A laboratory investigation has led to a new approach for stimulation interventions in gas-condensate wells in Mexico...

... sedimentary rock waterflooding steam-assisted gravity drainage geology mineral sagd reservoir characterization concentration nanoparticle wettability alteration geologist complex reservoir shale gas biosurfua surfactant system wettability rock type chemical flooding methods...

... Abstract Visco-elastic surfactants (VES) are widely used in oil and gas-well drilling and completion operations, mainly due to their non-damaging characteristics and excellent sand and proppant carrying properties. A challenge of VES is to maintain visco-elasticity over a wide set...

... nanoparticles with water and anionic surfactant to prepare the liquid phase of foams. The hydrostatic pressure distribution at different column depths as a function of time was measured after trapping a fully generated foam in a vertical test cell. Initially, baseline foams without nanoparticles were tested...

... remediation sulfide scale remediation surfactant rhamnolipid tensiometer unusual ph sensitive interfacial behavior wax inhibition water management wax remediation concentration sophorolipid spl sophorolipid inhibitor particulate rml rhamnolipid reduction multifunctional biosurfactant...

... Abstract It is well known that surfactants can be used as a wax dispersant, however, with properly adjusted ratios between the hydrophobic and hydrophilic groups of non-ionic surfactants, they can not only reduce the waxy oil pour point, but also reduce the detected wax appearance temperature...

... porous media proc surfactant efficiency Introduction Following the discovery of an oilfield, hydrocarbons are naturally pushed towards the wellbore by the primary driving mechanisms of the reservoir. This process results in a pressure drop as various reservoir fluids are produced. However...

... at elevated temperature had poor compatibility, which limited the applications at harsh reservoir conditions. An improved nanosheet system synergetic with a cationic surfactant was developed and showed good compatibility improvement at 95°C and salinity as high as 57,670 mg/L. The interfacial tension (IFT...

.... This allows the determination of the rate limiting hydration step, maximum viscosity and the hydration rates of a wide variety of nonionic surfactants to be explored. By comparing the PAM and PHPA hydration rates for the neat brine, tap water and brine with non-ionic surfactant it is shown that by choosing...

... surfactant-based novel fluids can reduce the capillary trapping of fluids by lowering the surface tension and modifying wettability to less water-wet condition and thereby improve the relative gas permeability and well productivity. In this work, a novel surfactant-based fluid was developed to be effective...

... Abstract Surface roughness of rocks had a significant influence on surfactant adsorption in enhanced oil recovery (EOR), both in terms of the total amount adsorbed as well as of the kinetics of adsorption. Combining electrochemical techniques and quartz crystal microbalance with dissipation...

... fluids and materials dodecane mechanism emulsifier concentration surfactant mineral sepiolite barite tofa degradation hydrolysis emulsifier Introduction Non-Aqueous Fluids (NAF) are commonly used for deep water drilling due to its outstanding performance in providing excellent hole...

... with sample (II), the sample (I) has more heavy components. After the mixing of oil samples and ASP, more surfactant and alkali enters into the oil phase of sample (I). Therefore, based on the similar miscibility principle, the surfactant is more likely to leave the oil water interface and enter into the oil...

... 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...