Studies on foam flooding for saline reservoirs after polymer flooding

Zhou, Ming; Wang, Chengwen; Xing, Tingting; Li, Sisi; Zhang, Zhe; Luo, Gang

doi:10.1016/j.petrol.2015.09.020

Cited by 34 publications

(9 citation statements)

References 30 publications

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“…Three phase foam flooding efficiencies were 18.2 wt% and 27.3 wt% in high permeability core and low permeability core, respectively. Average EOR was 21.7 wt%, which is more than that of two phase foam (15.9 wt%) in the literature [19]. More subsequent fluid flowed into the low permeable layers after the foam was injected.…”

Section: (7) Profile Controlmentioning

confidence: 68%

“…Therefore, Enhanced Oil Recovery (EOR) technology is of significant interest and one of the most important drivers for developing oil and gas fields [2,3]. Chemical flooding is an important the mature technique of EOR, which includes polymer flooding, surfactant flooding, foam flooding, alkaline flooding and combinational flooding [4][5][6]. Polymers have been used successfully in EOR for quite a long time.…”

Section: Introductionmentioning

confidence: 99%

“…The Composite Index (FCI) of conventional foam is very low in the high salinity solution because the foaming volume is small and the half-life is remarkably short [19]. To solve this problem, the P(MSt-co-MMA) nanospheres were prepared by emulsion polymerization at first, then the three phase foam system consisting of surfactant, P(MSt-co-MMA) nanospheres and polymer KYPAM-II was prepared in this paper.…”

Section: Introductionmentioning

confidence: 99%

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Study on three phase foam for Enhanced Oil Recovery in extra-low permeability reservoirs

Zhou¹,

Bu²,

Wang³

et al. 2018

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Poly (MSt-MMA) nanosphere as foam stabilizing agent was synthesized by emulsion polymerization. The three phase foam was prepared with Disodium 4-Dodecyl-2,4′-Oxydiben Zenesulfonate (DOZS) as foaming agent, Hydrolyzed Polyacrylamide (HPAM) and synthesized poly (MSt-MMA) nanospheres as the mixed foam stabilizing agents. It had outstanding foaming performance and foam stability. The optimal three phase foam system consisting of 0.12 wt% HPAM, 0.04 wt% poly (MSt-MMA) nanospheres and 0.12 wt% DOZS by orthogonal experiment, had high apparent viscosity, which showed that three components had a very good synergistic effect. The three phase foam’s temperature tolerance and salt tolerance were researched in laboratory tests. Flooding oil experiment showed that the average displacement efficiency of three phase foam system was 16.1 wt% in single core experiments and 21.7 wt% in double core experiments. Resistance coefficient of low permeability core was more than those of high permeability core, but their residual resistance coefficients were small. The results of core experiment and pilot test indicated that the three phase foam had good profile control ability and generated low damage to the low permeability layer for extra-low permeability reservoirs. Three phase foam flooding has great prospects for Enhanced Oil Recovery (EOR) in extra-low permeability reservoirs.

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Section: (7) Profile Controlmentioning

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study on three phase foam for Enhanced Oil Recovery in extra-low permeability reservoirs

Zhou¹,

Bu²,

Wang³

et al. 2018

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…(iv) Molecular structure design should be enhanced for sulfonated Gemini surfactants. (v) The new application in many areas such as water pollution (Zana, ; Zhang, Guo, & Zhang, ) and the petroleum industry to improve oil recovery should be strengthened (Zhou, Wang, et al, ; Zhou, Zhao, Wang, & Yang, ), which would promote the synthesis study on the novel sulfonated Gemini surfactants. With the development of green chemistry, traditional Gemini surfactants are being replaced by more environmentally friendly Gemini surfactants such as CO 2 /N 2 switchable surfactants (Lu, He, & Huang, ; Zhou, Wang, et al, ).…”

Section: Discussionmentioning

confidence: 99%

Recent Advances in the Synthesis of Sulfonate Gemini Surfactants

Zhou

Zou

2018

J Surfact & Detergents

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Sulfonated Gemini surfactants are a relatively new class of anion surfactants, composed of 2 or more sulfonated surfactant monomers connected by a spacer at or near the head groups through a covalent bond. In general, the sulfonated Gemini surfactants show better properties compared to conventional anionic surfactants including better surface activity, a lower critical micelle concentration, enhanced detergency, excellent compatibility with other surfactants, and better solubility in high ionic strength systems. This article reviews the synthesis of the sulfonated Gemini surfactants using different raw materials. Based on the existing information in the literature, new ideas are proposed for the synthesis and application of the sulfonated Gemini surfactants.

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“…The viscosity contrast between injected water and crude oil results in reduced oil recovery (∼40%) from the reservoirs. 1 Water flooding leaves most of the crude oil (∼60%) behind as residual oil, which can be produced by controlling the mobility ratio between water and oil and/or by increasing the capillary number. One of the effective ways to control the mobility ratio is the use of water-soluble high-molecular-weight polymers, which not only increase water viscosity but also push additional oil by blocking high-permeable water-flooded pores as polymer chains can entangle to form cross-linked 3D networks.…”

Section: Introductionmentioning

confidence: 99%

Extensional Rheological Measurements of Surfactant–Polymer Mixtures

et al. 2020

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Polymer solutions flowing in the porous media during enhanced oil recovery (EOR) processes are subjected to both shear and extensional rheological deformation. However, the previous rheological studies conducted on a surfactant−polymer (SP) system or polymer systems were only shear-based. In this paper, the extensional rheological performance of hydrolyzed polyacrylamide (HPAM) in the presence of an anionic surfactant at various concentrations (0, 0.01, 0.05, 0.1, 0.2, and 0.3%) is studied with deionized water and 1% NaCl. Further, the extensional rheological behavior of HPAM in the presence of NaCl and CaCl 2 is studied at varying ionic strengths (1−10%). A capillary break-up extensional rheometer is used for performing extensional rheological characterization. Results revealed that the extensional resistance of HPAM is enhanced in the presence of a surfactant. Particularly, around the critical micelle concentration value of the surfactant (0.1%), HPAM showed higher extensional resistance. Higher extensional resistance for the SP system is observed with deionized water when compared to 1% NaCl. HPAM showed improved performance at 1% NaCl salinity when compared to the higher concentration of NaCl salinity. However, the presence of even 1% of calcium ions is detrimental to the extensional properties of HPAM.

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Studies on foam flooding for saline reservoirs after polymer flooding

Cited by 34 publications

References 30 publications

Study on three phase foam for Enhanced Oil Recovery in extra-low permeability reservoirs

Study on three phase foam for Enhanced Oil Recovery in extra-low permeability reservoirs

Recent Advances in the Synthesis of Sulfonate Gemini Surfactants

Extensional Rheological Measurements of Surfactant–Polymer Mixtures

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