Development of Novel Foaming Agents for High Temperature Steam Applications

Sanders, Aaron W.; Nguyen, Mark; Ren, Ginger; Westemoreland, Dana; Nguyen, Quoc P.; Dong, Susan; Rojas, Carolina

doi:10.2118/188682-ms

Cited by 8 publications

(1 citation statement)

References 10 publications

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“…Based on this phenomenon, this paper studies the seepage mechanism, influencing factors and adaptability of nitrogen foam flooding in bottom water reservoirs by means of indoor one-dimensional core tube experiment and two-dimensional visualization experiment, so as to further improve the nitrogen foam flooding technology, clarify the fiuid migration and distribution characteristics of nitrogen foam flooding, and discover the mechanism of nitrogen foam flooding to enhance oil recovery, which is of great significance to improve the application level of nitrogen foam flooding in bottom water reservoirs (Sanders et al, 2017;Shah et al, 2020;Cao et al, 2022b).…”

Section: Introductionmentioning

confidence: 99%

Study on the mechanism of improved oil recovery by nitrogen foam flooding in bottom water reservoirs

Wang²,

Ma³

et al. 2023

Front. Energy Res.

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There are abundant bottom water reservoirs in China. Unlike conventional oil reservoirs, bottom water reservoirs have various problems, such as early water breakthrough, short water-free oil recovery period, and rapid water cut increase. For example, during water flooding, the injected water easily breaks into the bottom water and does not effectively displace the upper crude oil. The recovery rate is generally low. Based on this phenomenon, an experimental study of nitrogen foam flooding in bottom water reservoirs is conducted in this paper. The seepage characteristics of nitrogen foam in oil and water layers are studied through one-dimensional core tube experiments. Through two-dimensional plate oil displacement experiments, we have revealed the fluid migration and distribution characteristics in the plane and vertical directions during nitrogen foam flooding in bottom water reservoirs; additionally, we have summarized the mechanisms of nitrogen foam in bottom water reservoirs involved in improving oil recovery characteristics. The research results show that the seepage resistance of foam in the water layer is much greater than that in the oil layer, effectively increasing the displacement strength of the oil layer. During the development stage of bottom water flooding in bottom water reservoirs, the water cut increases rapidly, the bottom water coning is obvious, and the residual oil is mainly distributed between the oil wells and the upper part of the oil layer near the wellbore. During nitrogen foam flooding, the foam enters the water layer to form an effective plug so that the subsequent foam is diverted into the oil layer; additionally, the oil is displaced laterally to the production well for production. When the foam enters the oil layer, it defoams and floats to form a secondary gas cap; this effect causes displacement of the residual oil at the top and effectively improves the displacement efficiency by weeping volume of the injected fluid”

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Section: Introductionmentioning

confidence: 99%

Study on the mechanism of improved oil recovery by nitrogen foam flooding in bottom water reservoirs

Wang²,

Ma³

et al. 2023

Front. Energy Res.

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An experimental investigation of surfactant structure–property relationship for foam mobility control in thermal EOR processes

et al. 2022

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Analysis of the characteristics of flue gas foam seepage and its influencing factors

Wang

2020

IOP Conf. Ser.: Earth Environ. Sci.

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The flue gas foam-assisted steam flooding technology is beneficial to inhibit the steam channeling, delay the steam overriding and improve the heat utilization rate. At the same time, it is also conducive to carbon dioxide storage, which has a broad application prospect. However, the current research on the seepage characteristics and influencing factors of flue gas foam-assisted steam flooding is insufficient. In this paper, the sand pack flooding experiments were carried out by changing the gas-liquid ratio, injection rate, temperature, permeability and other parameters. The results showed that in the case of low gas-liquid ratio, the number and size of foams are small and the connectivity between foams is poor. When the gas-liquid ratio is high, the gas-phase composition is high so that gas channeling occurs and the plugging effect is reduced. Experiments showed that when the gas-liquid ratio is 2:1, the resistance factor is the largest and the plugging performance is the best. When the injection rate is 3mL/min, the foam is stable, which is beneficial to the foam plugging. When the injection rate is lower than 3 mL/min, the foam is sparse and the foam liquid film is thin so that the plugging effect is poor. When the injection flow rate is higher than 3 mL/min, more foam with smaller size will be formed under the influence of shear action, and the Jamin effect on the pore throat will be weakened, which is difficult to be plugged by the foam system. With the increase of experimental temperature, the intermolecular force of the solution was strengthened, the foam volume was enlarged and the liquid film was thinned so that the foam stability and the plugging performance were weakened. Oil saturation has a greater impact on the plugging ability of the flue gas foam. The higher the oil saturation, the weaker the plugging ability is. The research can provide reference for the application of flue gas foam plugging technology.

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Development of Novel Foaming Agents for High Temperature Steam Applications

Cited by 8 publications

References 10 publications

Study on the mechanism of improved oil recovery by nitrogen foam flooding in bottom water reservoirs

Study on the mechanism of improved oil recovery by nitrogen foam flooding in bottom water reservoirs

An experimental investigation of surfactant structure–property relationship for foam mobility control in thermal EOR processes

Analysis of the characteristics of flue gas foam seepage and its influencing factors

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