A preliminary assessment of thermochemical fluid for heavy oil recovery

Alade, Olalekan; Hamdy, Mohamed S.; Mahmoud, Mohamed; Shehri, Dhafer Al; Mokheimer, Esmail M. A.; Patil, Shirish; Al-Nakhli, Ayman

doi:10.1016/j.petrol.2019.106702

Cited by 19 publications

(13 citation statements)

References 23 publications

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“…e far-well end viscosity reducer has the oil washing effect of reducing the interfacial tension. e composite relay enhances the oil washing effect [25][26][27][28][29]. Laboratory experiments have shown that the oil displacement efficiency of thermochemical combination is 32.1% higher than that of single steam (Figure 7).…”

Section: 5mentioning

confidence: 99%

Development and Research Status of Heavy Oil Enhanced Oil Recovery

2022

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Heavy oil is an important part of petroleum hydrocarbon energy. With the depletion of conventional crude oil reserves, successful and efficient exploitation of heavy oil resources is becoming increasingly important. This article focuses on the nine relatively mature heavy oil development technologies from the perspectives of the level of understanding of the mechanism and the scale of the mining field: steam huff and puff, steam flooding, steam-assisted gravity drainage (SAGD), in situ combustion, thermochemical combined flooding, multicomponent thermal fluid, polymer flooding, chemical viscosity reduction development, and microbial oil recovery, which are divided into two technical categories: thermal recovery and cold recovery development. The basic development principles are explained, and application examples of the two categories of techniques are provided. It is pointed out that thermal compounding, cold mining development, and nanomaterial applications will be the three development trends in heavy oil development.

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Section: 5mentioning

confidence: 99%

Development and Research Status of Heavy Oil Enhanced Oil Recovery

2022

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“…At present, thermal methods, such as steam huff and puff, steam flooding, are mainly used for heavy crude oil production. On the one hand, the thermal recovery method can reduce the viscosity of heavy oil; on the other hand, it can break the carbon chain of the long carbon chain molecules in heavy oil and improve its fluidity [117,118]. Adding nanoparticles with high heat conductivity in the process of thermal recovery is helpful to improve the heat conduction efficiency and improve the viscosity reduction effect of heavy oil [119][120][121][122][123].…”

Section: Heavy Oil Recoverymentioning

confidence: 99%

Applications of Graphene and Its Derivatives in the Upstream Oil and Gas Industry: A Systematic Review

Ke-jian

Tang

et al. 2020

Nanomaterials

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Graphene and its derivatives, with their unique two-dimensional structures and excellent physical and chemical properties, have been an international research hotspot both in the research community and industry. However, in application-oriented research in the oil and gas industry they have only drawn attention in the past several years. Their excellent optical, electrical, thermal and mechanical performance make them great candidates for use in oil and gas exploration, drilling, production, and transportation. Combined with the actual requirements for well working fluids, chemical enhanced oil recovery, heavy oil recovery, profile control and water shutoff, tracers, oily wastewater treatment, pipeline corrosion prevention treatment, and tools and apparatus, etc., this paper introduces the behavior in water and toxicity to organisms of graphene and its derivatives in detail, and comprehensively reviews the research progress of graphene materials in the upstream oil and gas industry. Based on this, suggestions were put forward for the future research. This work is useful to the in-depth mechanism research and application scope broadening research in the upstream oil and gas industry.

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“…Heavy oil is characterized by its high content of asphaltenes and resins, which leads to a high viscosity. Generally, heavy oil is immobile under reservoir conditions [10][11][12]. As a result, thermal recovery approaches are often applied in the development of heavy oil reservoirs, specifically extraheavy oil reservoirs.…”

Section: Introductionmentioning

confidence: 99%

Conversion Timing of Following-Up Thermal Recovery Approaches of Post-CHOP for Foamy Extraheavy Oil Reservoirs

Yang

et al. 2021

Geofluids

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The purpose of this study is to determine the optimal conversion timing of follow-up thermal recovery approaches of post-CHOP for foamy extraheavy oil reservoirs. The microscopic visualization experiment and the one-dimensional sand pack experiment are conducted to investigate the influence of temperature on the foamy oil cold production process. According to the experimental results, it can be concluded that the temperature has great influence on foamy oil flow stage during the CHOP process. Therefore, it is necessary to study the optimal conversion timing of follow-up thermal recovery approaches after CHOP for the foamy extraheavy oil reservoir. Based on the analysis of the experimental results, the compositional foamy oil model is established by taking the effect of temperature into consideration. In the numerical model, the conversion timings of different thermal recovery approaches are investigated. The optimal conversion timings for cyclic steam stimulation (CSS) and steam flooding (SF) processes are the moments when the pressure drops to the pseudo-bubble point pressure. For the CSS method, excessive pressure cannot give full play to the production potential of CHOP stage; when the pressure is too low, it lacks enough energy to drive the heated crude oil to the wellbore. For the SF method, high pressure cannot fully release the latent heat of steam, and the content of dissolved gas (which will hinder the heat transfer) in oil phase is higher under high pressure, while the very low pressure leads to relatively high viscosity of crude oil; thus, the performance of the SF process becomes worse. For the SAGD process, the adverse effects of released solution gas in foamy extraheavy oil reservoir outweigh the positive effects. As a result, the CHOP period should be extended as long as possible to obtain a high recovery. In other words, the recovery process should be switched to the SAGD process at a relatively low formation pressure. The findings of this study could help for better understanding of the CHOP and post-CHOP thermal techniques for foamy extraheavy oil reservoirs, and it can provide guidance for reservoir engineers to make better use of the thermal recovery techniques to further improve the recovery performance of foamy extraheavy oil reservoirs.

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A preliminary assessment of thermochemical fluid for heavy oil recovery

Cited by 19 publications

References 23 publications

Development and Research Status of Heavy Oil Enhanced Oil Recovery

Development and Research Status of Heavy Oil Enhanced Oil Recovery

Applications of Graphene and Its Derivatives in the Upstream Oil and Gas Industry: A Systematic Review

Conversion Timing of Following-Up Thermal Recovery Approaches of Post-CHOP for Foamy Extraheavy Oil Reservoirs

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