ASP design for the Minnelusa formation under low-salinity conditions: Impacts of anhydrite on ASP performance

Gregersen, Casey S.; Kazempour, Mahdi; Alvarado, Vladimir

doi:10.1016/j.fuel.2012.06.051

Cited by 60 publications

(35 citation statements)

References 23 publications

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“…Such synergistic phenomena have been reported in literature and have shown to accomplish formulations able to reduce the interfacial tension down to ultralow values (El-Batanoney et al, 1999;Comelles, Sánchez-Leal & González, 2007;Wu et al, 2005;Gregersen, Kazempour & Alvarado, 2013 An optimal formulation is defined as the state in which, the conjunction of external and compositional variables is such that a minimum of interfacial tension is produced. Among the characteristic properties of an optimal formulation, the tri-phasic behavior, a Winsor's R = 1 (Winsor III system behavior), a similar solubilization of water and oil by action of the surfactant in the middle phase microemulsion, are the essential.…”

Section: Evaluation Of the Petroleum Sulfonates Obtained As Potentialmentioning

confidence: 85%

“…When using blends of Petrostep ® S2 and our sulfonates, with crude-oil as the organic phase, Winsor III systems were not found. Thus, several commercial surfactants were tested, among them the Petrostep ® S13D, and an alkyl propoxy sulfate surfactant (C16-18PO13SO 4 ) (Gregersen et al, 2013;Wu et al, 2005;Carmona, Schechter, Wade & Weerasooriya, 1985) that showed good synergy with the petroleum sulfonates, probably due to inter and intramolecular extension of the interphase (Salager et al, 2013). In order to determine the surfactant mixing ratio performing the maximum solubilization of oil and water, sulfonate 4 was randomly selected and evaluated with Lisama-161 in different sulfonate to Petrostep ® S13D ratios (Figure 4).…”

Section: Evaluation Of the Petroleum Sulfonates Obtained As Potentialmentioning

confidence: 99%

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Petroleum sulfonates preparation and evaluation for chemical enhanced oil recovery in Colombian oil fields

Pachón-Contreras

Rojas-Ruíz²,

Rondón-Antón³

et al. 2014

CT&F Cienc. Tecnol. Futuro

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A n efficient method for preparing petroleum sulfonates is described in this article. Petroleum sulfonates were prepared from five different refinery cuts and characterized by infrarred and ultra-violet spectroscopy. Their hydrophilic-lipophilic relative afinity was assessed by performing phase behavior scans. The prepared surfactants were evaluated in formulations for Chemical Enhanced Oil Recovery (CEOR), showing that, under the evaluation conditions, the solubilization ratios increase with the structural similarity between the crude oil and the surfactant molecules. It was confirmed that, when used as secondary surfactants, the petroleum sulfonates here prepared allow to achieve relatively high solubilization parameters. ABSTRACT PREPARACIÓN DE SULFONATOS DE PETRÓLEO Y EVALUACIÓN PARA RECOBRO QUÍMICO MEJORADO EN CAMPOS DE PETRÓLEO COLOMBIANOS 56N o presente trabalho é descrito um método eficiente para a preparação de sulfonatos de petróleo. Os sulfonatos de petróleo são preparados a partir de cinco cortes de refinaria diferentes e são caracterizados por espectroscopia de infravermelho e ultravioleta. Sua afinidade relativa hidrófilica lipófilica foi avaliada mediante a realização de comportamentos de fase. Os tensoativos preparados foram avaliados em formulações para Recuperação Química Melhorada demonstrando que, sob as condições de avaliação, as relações de solubilização aumentam com a semelhança estrutural que existe entre o petróleo cru e as moléculas do surfactante utilizado. Confirma-se que, quando são utilizados como surfactantes secundários, os sulfonatos de petróleo aqui preparados permitem atingir parâmetros de solubilização relativamente elevados. E n el presente trabajo se describe un método eficiente para la preparación de sulfonatos de petróleo. Los sulfonatos de petróleo se prepararon a partir de cinco cortes de refinería diferentes y se caracterizaron por espectroscopía de infrarrojo y ultravioleta. Su afinidad relativa hidrófilica lipófilica se evaluó mediante la realización de comportamientos de fase. Los tensoactivos preparados se evaluaron en formulaciones para Recobro Químico Mejorado demostrando que, bajo las condiciones de evaluación, las relaciones de solubilización aumentan con la similitud estructural que existe entre el petróleo crudo y las moléculas del surfactante utilizado. Se confirma que, cuando se utilizan como surfactantes secundarios, los sulfonatos de petróleo aquí preparados permiten alcanzar parámetros de solubilización relativamente elevados.Palabras clave: Surfactantes, Sulfonación, Síntesis química, Reacción de sulfonación, Recobro mejorado de petróleo, Caracterización, Espectroscopia infrarroja, Espectroscopia de luz ultravioleta.Palavras-chave: Surfactante, Sulfonação, Síntese química, Reação de sulfonação, Recuperação melhorada de petróleo, Caracterização, Espectropia de infravermelho, Espectropia de luz ultravioleta.

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Section: Evaluation Of the Petroleum Sulfonates Obtained As Potentialmentioning

confidence: 85%

Section: Evaluation Of the Petroleum Sulfonates Obtained As Potentialmentioning

confidence: 99%

Petroleum sulfonates preparation and evaluation for chemical enhanced oil recovery in Colombian oil fields

Pachón-Contreras

Rojas-Ruíz²,

Rondón-Antón³

et al. 2014

CT&F Cienc. Tecnol. Futuro

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“…A work recently done by our research group showed that presence of only 0.1 wt % anhydrite in the rock causes retardation of surfactant to about 0.7 pore volume, which is considered a huge amount of adsorption [7]. Recently, some researchers have claimed that sodium hydroxide is a better alkali to be used comparing to sodium carbonate in the presence of anhydrite [8].…”

Section: Effect Of Presence Of Anhydrite On Alkali As Sacrificial Agentmentioning

confidence: 98%

“…However, in the presence of even small amounts of anhydrite in the formation rock, alkali reacts with the anhydrite [6][7][8][9]. Equation 1 shows the reaction between anhydrite and sodium carbonate.…”

Section: Introductionmentioning

confidence: 99%

Sacrificial Agent for Reducing Adsorption of Anionic Surfactants

2013

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An important economical factor affecting Enhanced Oil Recovery (EOR) is the adsorption of surfactants on the rocks. Sacrificial agents may be used to reduce the adsorption of surfactants. An alkali (traditionally, sodium carbonate or sodium hydroxide) is often used as sacrificial adsorption agent; however, sodium carbonate is not an effective sacrificial agent in the presence of anhydrite in the rocks due to the reaction between sodium carbonate and sparingly-soluble anhydrite. Therefore, it is essential to develop a sacrificial adsorption agent that can act effectively in the presence of anhydrite. In this work, sodium polyacrylate is evaluated as a sacrificial agent, and is compared to many other conventional or recentlyrecommended sacrificial agents, and has shown advantage over all of them for the case of presence of anhydrite. Some experiments have been conducted to demonstrate the ineffectiveness of sodium carbonate as sacrificial agent in the presence of anhydrite. Effect of molecular weight of sodium polyacrylate is tested, and it is found that increase in molecular weight results in decrease in adsorption of surfactant until a certain molecular weight of polyacrylate is reached after which molecular weight has no further effect on reducing adsorption of surfactant. Addition of polyacrylate was shown to reduce adsorption of a selected anionic surfactant on different outcrop minerals, including Carlpool dolomite, industrial calcite, kaolinite, Berea sandstone, and Indiana limestone. To prove the point further, application of polyacrylate was tested with two different anionic surfactants. Adsorption of polyacrylate itself is measured in the presence and absence of surfactant and showed to be independent of the presence of surfactant. The effect of concentration of divalent ions and salinity in the brine on effectiveness of sodium polyacrylate as sacrificial agent has been evaluated on different minerals/rocks. Finally, dynamic adsorption data has been presented in different concentrations of sodium polyacrylate. All these experiments demonstrate the advantage of using sodium polyacrylate as sacrificial adsorption agent for anionic surfactants even in the presence of anhydrite in the rock.

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“…ASP flooding is the chemical flooding method that gives the highest oil recovery rate [1][2][3][4][5]. Despite the controversies on its technical and economic feasibilities [6,7], pilot on-site experiments and examination of its industrial application are continuously carried out [8][9][10][11][12]. The technical issues of ASP flooding mainly include (1) formation damage due to the use of strong base, (2) scale buildup in the injection and production equipment, and (3) difficulties in processing the produced fluid [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Alkali/Surfactant/Polymer Flooding in the Daqing Oilfield Class II Reservoirs Using Associating Polymer

Feng

Guo

Zhang

et al. 2013

Journal of Chemistry

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Hydrophobically modified associating polyacrylamide (HAPAM) has good compatibility with the Daqing heavy alkylbenzene sulfonate surfactant. The HAPAM alkali/surfactant/polymer (ASP) system can generate ultralow interfacial tension in a wide range of alkali/surfactant concentrations and maintain stable viscosity and interfacial tension for 120 days. The HAPAM ASP system has good injectivity for the Daqing class II reservoirs (100–300 × 10−3 μm2) and can improve oil recovery by more than 25% on top of water flooding. In the presence of both the alkali and the surfactant, the surfactant interacts with the associating groups of the polymer to form more micelles, which can significantly enhance the viscosity of the ASP system. Compared with using HPAM (Mw = 2.5 MDa), using HAPAM can reduce the polymer use by more than 40%.

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ASP design for the Minnelusa formation under low-salinity conditions: Impacts of anhydrite on ASP performance

Cited by 60 publications

References 23 publications

Petroleum sulfonates preparation and evaluation for chemical enhanced oil recovery in Colombian oil fields

Petroleum sulfonates preparation and evaluation for chemical enhanced oil recovery in Colombian oil fields

Sacrificial Agent for Reducing Adsorption of Anionic Surfactants

Alkali/Surfactant/Polymer Flooding in the Daqing Oilfield Class II Reservoirs Using Associating Polymer

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