Experimental Study of Surfactant Alkaline Steam Flood Through Vertical Wells

Shedid, Shedid Ali; Abbas, A. Abbas El

doi:10.2118/62562-ms

Cited by 8 publications

(4 citation statements)

References 7 publications

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“…Therefore, it can be affirmed that, for the applied conditions, there is a synergy between the steam injection and the surfactant solution. The studies carried out by Shedid and El Abbas also showed an increase in the recovery factor for the injection of surfactant and steam, but in different proportions. The increase reported in their work was a 7% recovery factor over the steam injection method.…”

Section: Resultsmentioning

confidence: 88%

“…46 This effect can be observed by the displacement power of the oil by the solutions, which is amplified with the increase of the ethoxylation factor. According to Shedid and El Abbas, 31 the surfactant, together with the steam injection, makes it possible to control the mobility of steam. This action is perceived by evaluating the recovery factor that the steam is able to generate after the injection of the surfactant bank, being favored by the increase in the degree of ethoxylation of the surfactant used.…”

Section: Hybrid Methods (Thermal and Chemical�surfactant And Steam In...mentioning

confidence: 99%

“…Studies involving thermal and chemical methods, especially steam injection and surfactant, respectively, are not recent. There are many studies approaching and demonstrating the effectiveness of steam injection and surfactant solution in increasing oil recovery between 15 and 25% points, when compared to steam injection. − However, there are just a few studies that aim to verify the effect of the degree of surfactant ethoxylation in different injection configurations. Given this scenario, the present work investigates those effects to propose the use of a hybrid recovery method, through steam injection with non-ionic nonylphenol surfactant solutions.…”

Section: Introductionmentioning

confidence: 99%

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Increasing Recovery Factor in Heavy Oil Fields Using Alternating Steam and Surfactant Injection

et al. 2023

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Fossil fuels, particularly oil, currently dominate the global energy matrix. With a projected 30% increase in demand by 2040 compared to 2010, it is crucial to maintain current oil production levels. To achieve this, it is necessary to increase the oil recovery factor through alternative methodologies that will improve oil extraction from reservoirs and exploration viability in mature fields. While previous studies have investigated thermal and chemical methods to increase the recovery factor, this study aims to explore the synergy between steam and non-ionic surfactants varying the surfactant degrees of ethoxylation and injection configurations. The experimental study investigated the application of solutions of ethoxylated nonylphenol surfactants (NP-10EO and NP-100EO) combined with steam injection into banks at different concentrations and injection configurations. The results showed that combining the NP-100EO surfactant (0.5% m/m) with steam demonstrated the highest oil recovery (64.88%) compared to conventional steam (45.19%). The most effective configurations were surfactant + steam + surfactant (65.06%) and surfactant + steam + water (65.88%). These findings suggest that the proposed technique of steam injection and surfactant solution could be a promising alternative. By revitalizing marginal fields, this technique could help extend production and stimulate local and regional development.

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Section: Resultsmentioning

confidence: 88%

Section: Hybrid Methods (Thermal and Chemical�surfactant And Steam In...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Increasing Recovery Factor in Heavy Oil Fields Using Alternating Steam and Surfactant Injection

et al. 2023

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“…The displacement results conducted show that the caustic steam flood recovered between 10 to 15 % more of OOIP than conventional steamflood. Shedid and Abbas (2000) conducted flow experiments to study the surfactant alkaline steam flooding process through vertical wells and concluded that addition of surfactant or alkaline to steam drive improves the oil recovery of the process and surfactant steam flood recovers more oil than alkaline steam flood. A new technique for surfactant alkaline steam flooding was proposed which can be applicable to both waterflooded as well as conventional steam projects.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Caustic Steam Injection for Heavy Oils

Madhavan¹,

Mamora²

2010

Proceedings of SPE Improved Oil Recovery Symposium

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An experimental study has been conducted to compare the effect of steam injection and caustic steam injection in improving the recovery of San Ardo and Duri heavy oils. A 67 cm long x 7.4 cm O.D (outer diameter), steel injection cell is used in the study. Six thermocouples are placed at specific distances in the injection cell to record temperature profiles and thus the steam front velocity. The injection cell is filled with a mixture of oil, water and sand. Steam is injected at superheated conditions of 238 o C with the cell outlet pressure set at 200 psig. The pressure in the separators is kept at 50 psig. The separator liquid is sampled at regular intervals. The liquid is centrifuged to determine the oil and water volumes, and oil viscosity, density and recovery. Acid number measurements are made by the titration method using a pH meter and measuring the EMF values. The interfacial tensions of the oil for different concentrations of NaOH are also measured using a tensionometer.Experimental results showed that for Duri oil, the addition of caustic results in an increase in recovery of oil from 52% oil initially-in-place (OIIP) (steam injection) to 59 % OIIP (caustic steam injection). However, caustic has little effect on San Ardo oil where oil recovery is 75% OIIP (steam injection) and 76 % OIIP (caustic steam injection). Oil production acceleration is seen with steam-caustic injection. With steam caustic injection there is also a decrease in the produced oil viscosity and density for both oils. Sodium hydroxide concentration of 1 wt % is observed to give the lowest oil-caustic interfacial tension. The acid numbers for San Ardo and Duri oil are measured as 6.2 and 3.57 mg KOH per gram oil respectively.

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