A novel strategy to reduce carbon emissions of heavy oil thermal recovery: Condensation heat transfer performance of flue gas-assisted steam flooding

Wang, Zhoujie; Li, Songyan; Li, Zhaomin

doi:10.1016/j.applthermaleng.2022.118076

Cited by 51 publications

(23 citation statements)

References 56 publications

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“…The reservoir is a tight sandstone reservoir with low porosity and permeability. The recovery rate of oil in this reservoir is typically less than 10%, which is far from satisfactory [10]. The main challenge in recovering oil from Ansai low permeable fracture reservoir is the low permeability of the rock.…”

Section: Introductionmentioning

confidence: 99%

The Research and Application of Adjustable Drive Improve Oil Recovery Technology in Ansai Low Permeable Fracture Reservoir

2023

IJIIS Int. J. Informatics Inf. Syst.

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In order to solve the serious problem that the injected water channeling is serious and the water flooding effect is getting worse in Ansai low permeability fractured reservoir. Developed the gelling movable gel profile control displacement-agent RD which Can control the gel time and the strength. Select out the surfactant XSY-1 that can reduce water interfacial tension to ultra-low and can significantly improve oil displacement efficiency. Designed five group profiling experiments on parallel cores, optimized movable frozen rubber slug of surfactant slug best combination of 0.2 of the PV profile control agent add 0.40 PV surfactant, compared with the water flooding ways to enhance oil recovery of 22.5％. Adjustable drive combined with technology is the effective way to improve the Ansai low permeability fractured reservoir water flooding effect.

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Section: Introductionmentioning

confidence: 99%

The Research and Application of Adjustable Drive Improve Oil Recovery Technology in Ansai Low Permeable Fracture Reservoir

2023

IJIIS Int. J. Informatics Inf. Syst.

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“…To develop this kind of reservoir efficiently, scholars have conducted many studies (Lotfollahi et al, 2016;Autxu et al, 2017;Wei et al, 2017;Xu et al, 2017;Hematpur et al, 2018;Wang et al, 2019b;Cao et al, 2022a;Wang et al, 2022). L.W.…”

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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“…Because the current proportion of heavy oil in the world’s remaining oil resources continues to rise, − research on foam flooding has attracted many scholars. Unlike the low sweep coefficient and low oil washing efficiency of water flooding in heavy oil development, − foam has special fluidity due to its gas–liquid two-phase system. Based on the superimposed Jamin effect and other mechanisms, it can penetrate deep into the complex pores of formation and significantly improve the sweep efficiency. − At the same time, the presence of surfactants enables the foam to peel off the heavy oil from the rock surface by wetting reversal and emulsification mechanisms to form a stable emulsion, − which further optimizes the oil washing efficiency, − and eventually improves the oil recovery factor. ,, The advantage of using foam to efficiently produce heavy oil lies in its multiple displacement mechanisms, which are affected by fluid components and other factors. − …”

Section: Introductionmentioning

confidence: 99%

Microscopic Mechanical Model Analysis and Visualization Investigation of SiO₂ Nanoparticle/HPAM Polymer Foam Liquid Film Displacing Heavy Oil

et al. 2022

Langmuir

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In this paper, the microscopic mechanisms and macroscopic characteristics of polymer/nanoparticle foam flooding in a heavy oil reservoir environment were studied. Sodium dodecyl sulfate (SDS) surfactant was used as the foaming agent, and the foam was prepared by a combination of partially hydrolyzed polyacrylamide (HPAM) polymer and SiO2 nanoparticles. By performing experiments with the microscopic model, the foam flooding dynamics in the heavy oil reservoir were simulated. Based on the experiments, the formula model was established to evaluate the physicochemical effects between the foam liquid film and oil surface. Finally, the macroscopic characteristics of foam flooding were studied by performing oil displacement experiments with a 2D visual model. The microscopic experiments demonstrated that the foam liquid film could exert multiple actions, such as adsorption, stretching, and cutting on the heavy oil in the reservoir pores. These actions were accompanied by force changes between the foam and heavy oil, and the addition of polymer and nanoparticles further strengthened them. The calculations of the formula model indicated that the polymer and nanoparticles amplified the force between the foam liquid film and heavy oil by 1.95 and 2.2 times, respectively. The 2D visual model experiments suggested that foam flooding could further develop heavy oil after water flooding through its liquid film effects, and the oil recovery efficiency increased from 42.43 to 57.82%. In addition, the polymer and nanoparticles further optimized the oil displacement effect of the foam liquid film, which made the oil recovery efficiency reach 64.77–68.16%.

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A novel strategy to reduce carbon emissions of heavy oil thermal recovery: Condensation heat transfer performance of flue gas-assisted steam flooding

Cited by 51 publications

References 56 publications

The Research and Application of Adjustable Drive Improve Oil Recovery Technology in Ansai Low Permeable Fracture Reservoir

The Research and Application of Adjustable Drive Improve Oil Recovery Technology in Ansai Low Permeable Fracture Reservoir

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

Microscopic Mechanical Model Analysis and Visualization Investigation of SiO₂ Nanoparticle/HPAM Polymer Foam Liquid Film Displacing Heavy Oil

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A novel strategy to reduce carbon emissions of heavy oil thermal recovery: Condensation heat transfer performance of flue gas-assisted steam flooding

Cited by 51 publications

References 56 publications

The Research and Application of Adjustable Drive Improve Oil Recovery Technology in Ansai Low Permeable Fracture Reservoir

The Research and Application of Adjustable Drive Improve Oil Recovery Technology in Ansai Low Permeable Fracture Reservoir

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

Microscopic Mechanical Model Analysis and Visualization Investigation of SiO2 Nanoparticle/HPAM Polymer Foam Liquid Film Displacing Heavy Oil

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Product

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Microscopic Mechanical Model Analysis and Visualization Investigation of SiO₂ Nanoparticle/HPAM Polymer Foam Liquid Film Displacing Heavy Oil