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Keywords: surfactant
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Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218196-MS
... from zeta potential measurements. The synergy between low-salinity water and surfactants yielded more than 40% oil recovery in spontaneous imbibition experiments. The addition of sulfate ions and weak acids improved spontaneous imbibition. The results of core flood tests underscored the efficacy...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218143-MS
.... EOR techniques have been proven to be technically feasible and to a certain degree, economically attractive. The techniques described in this paper are 1) gas injection in the huff n' puff mode 2) surfactant injection in the huff n' puff mode and 3) co- injection of both miscible gas and surfactant...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218216-MS
... Abstract Surfactants are widely applied agents to interact with the adsorbates on carbonate rock surface, which could alter wettability from oil-wetness to water-wetness and thus enhance oil recovery. Surfactant huff-puff is often conducted to achieve wettability alteration and has been applied...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218190-MS
... Abstract For a successful polymer EOR application, maintaining high polymer injectivity below fracture pressure is important to prevent fracture propagation in the reservoir causing fast breakthrough. Adding surfactant into the polymer system can facilitate the reduction of interfacial tension...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218157-MS
... imbibition is different during different EOR techniques, such as surfactant flooding, low salinity water injection, and hybrid methods. The effect of the type of capillary modifications on the imbibition rate was studied in this work. This study delves into a series of spontaneous imbibition tests aimed...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218283-MS
.... Identification of breakers tailored for chemical stimulation/EOR efforts is therefore essential for successful improved oil recovery. In this study, liquid and easily available partitioning agents were tested as emulsion and foam breakers with selective surfactants mixtures. Water soluble partitioning agents...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218135-MS
... Abstract This investigation focuses on contrasting surfactant huff ‘n’ puff (HnP) treatments in two Eagle Ford Shale wells, specifically examining the influence of a polylactic acid (PLA) diverter used in the second. This work demonstrates surfactants as an effective enhanced oil recovery (EOR...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218156-MS
... polymer concentration pvee carbonate rock artificial intelligence polymer mmp surfactant pfa dilute concentration reduction pdm dissolution solubility Introduction Injection of carbon dioxide (CO 2 ) is an enhanced oil recovery (EOR) method, which is widely applied globally. Wide...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218226-MS
... Abstract Foam-assisted CO 2 mobility control can enhance CO 2 utilization and storage efficiency during enhanced oil recovery and carbon sequestration processes. CO 2 is typically injected at larger gas fractions (fg) to reduce the surfactant costs, which, however, may result in significant...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218280-MS
... and vaporization. Recently, surfactant-based enhanced oil recovery (EOR) is being considered for improving recovery in unconventional reservoirs. This study is a proof of concept of applying a combined surfactant and gas injection EOR to shale reservoirs. In this study, a combination of surfactant assisted...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218271-MS
... Abstract This study investigates the use of binary surfactant systems for enhancing oil recovery (EOR) in carbonate formations, which have complex surface charges and harsh conditions (high temperature, high salinity) that limit the effectiveness of single surfactants. Binary surfactants form...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218264-MS
... to confidently move forward with polymer projects where other chemical processes will be implemented in the future. Furthermore, a train of thought states it is deleterious to inject polymer in advance of a surfactant-based flood because viscous fluid ahead of surfactant could slow down chemical front...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218270-MS
... Abstract Demulsification of produced fluids in chemical flooding is a costive treatment due to the stable emulsion in the presence of injected surfactants. The objective of this study is to develop unique thermal stimuli-responsive surfactant, which reduces interfacial tension (IFT) at high...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218151-MS
... hydrocarbons by altering rock wettability and lowering interfacial tension (IFT). The surfactants also alter the relative permeability to a more favorable state in the propped fractures. This work describes a workflow to optimize treatment fluids for injection into shale and tight rock reservoirs. The workflow...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218154-MS
... Abstract Foam injection into naturally fractured reservoirs unequivocally has superior merits over pure gas injection. In this study, we present a novel foam generation strategy that incorporates the co-injection of surfactant and supercritical CO 2 with huff-n-puff technique for the efficient...
Proceedings Papers

Paper presented at the SPE Improved Oil Recovery Conference, April 22–25, 2024
Paper Number: SPE-218198-MS
.... The majority of the bypassed oil is believed to be in the matrix. This paper describes a foam flood that has been implemented at Yates to sweep the bypassed oil in the matrix rock. Foam flooding in the Yates reservoir involves injecting a surfactant, along with the produced gas into the reservoir...

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