A new solvent-based enhanced heavy oil recovery method: Cyclic production with continuous solvent injection

Jiang, Tao; Zeng, Fanhua; Jia, Xiaohan; Gu, Yongan

doi:10.1016/j.fuel.2013.07.043

Cited by 55 publications

(27 citation statements)

References 17 publications

(20 reference statements)

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“…In addition, cold heavy oil production (CHOP), cold heavy oil Fig. 2 Various techniques used for enhanced oil recovery production with sands (CHOPS), microwave technique, surface mining, solvent injection and ultrasound are other techniques employed to enhance the recovery of crude oil (Jiang et al 2014). Surface mining is suitable for reservoirs with depth less than 70 m and recovers~5 % of OOIP.…”

Section: Methods Of Eormentioning

confidence: 99%

“…Surface mining is suitable for reservoirs with depth less than 70 m and recovers~5 % of OOIP. On the other hand, CHOP/CHOPS recover~5-10 % of OOIP (Ivory et al 2010;Jiang et al 2014). The largest percentage of OOIP is produced during primary recovery and over the period of time the decline starts when the reservoir is no longer productive, water flooding is done to augment the oil recovery and further enhancement is done through various enhancement methods (see Fig.…”

Section: Methods Of Eormentioning

confidence: 99%

“…Figure 12 shows schematically the CSS. CSS and SAG Dare performed to recover bitumen and heavy oil from reservoirs (Jiang et al 2014). SAGD is most popular in the oil sands and extra heavy crude reservoirs of Alberta, and tested in Venezuela with some degree of accomplishment.…”

Section: Thermal Eormentioning

confidence: 99%

“…However, these methods are lengthy, leaves residue in the reservoirs decreasing permeability, porosity, and alter wettability. Significant heat losses do happen in the case of reservoirs with thin formations and high water saturation present in the pay zone (Jiang et al 2014). …”

Section: Thermal Eormentioning

confidence: 99%

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Enhanced Oil Recovery Techniques for Indian Reservoirs

2015

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The overall oil production worldwide has declined due to the increase in maturity of the oil reservoirs. In developing countries like India, the oil production and demand plays a crucial role for the development of economy of the country. However, the domestic crude oil production is insufficient to meet the requirement for energy. Thus, there is a big challenge to minimize the gap between the demand and supply for crude oil. Several methods to enhance oil recovery have been developed to increase the production from matured reservoirs and are referred to as enhanced oil recovery (EOR) methods. This chapter discusses in detail about the various EOR methods, their applicability, and the screening criteria for various reservoir types. The EOR methods are further discussed in Indian contexts. This chapter also summarizes the details of various oilfields in India. The chapter will in general, help to understand the recent trends and the need of EOR for Indian oil reservoirs.

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Section: Methods Of Eormentioning

confidence: 99%

Section: Methods Of Eormentioning

confidence: 99%

Section: Thermal Eormentioning

confidence: 99%

Section: Thermal Eormentioning

confidence: 99%

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Enhanced Oil Recovery Techniques for Indian Reservoirs

2015

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“…It has been experimentally established that the main technical limitations of common CSI process are the untimely restoration of the oil viscosity due to solvent release and loss of oil mobility during recovery associated with it. In order to overcome the said technical drawbacks in the recent years some non-thermal process variants are proposed: enhanced CSP (ECSP) [10], cyclic production with continuous solvent injection (CP-CSI) [11] and gas flooding-assisted cyclic solvent injection (GA-CSI) [12]. For example, in the ECSP method two components are used as a solvent: methane and propane.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Effect of Composite Solvent and Asphaltenes Contents on Efficiency of Heavy Oil Recovery Processes at Injection of Light Hydrocarbons

Borisov¹,

Milordov²,

Yakubova³

et al. 2018

Recent Insights in Petroleum Science and Engineering

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The current state of research in the field of solvent injection techniques for increase of heavy oil production efficiency is discussed in the chapter. As a result of a series of experiments on the physical modeling of oil displacement processes in a porous medium in large-sized model, features of asphaltene precipitation and the formation of fixed residual oil upon injection of solvent based on light alkanes are revealed. The oil displacement by n-hexane was studied and the difference in the composition of residual oil in the zones of dispersion and diffusion has been shown. The influence of the composition of asphaltenes peculiarities on the dynamics of oil recovery and on the accumulated oil recovery during the injection of n-hexane, as well as the composition and quantity of asphaltenes precipitated in the porous medium, has been estimated. The effect of toluene and nonylphenol additives on the proportion of asphaltenes in the residual oil and cumulative oil recovery has been evaluated using the Ashalchinskoye field oil as an example of heavy oil in the physical modeling of injection of n-hexane as the base solvent.

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Dynamic solvent process (DSP) for enhancing heavy oil recovery

Jia

Zeng

2015

Can J Chem Eng

Self Cite

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Solvent-based heavy oil recovery techniques, such as vapour extraction (VAPEX) and cyclic solvent injection (CSI), have been attracting increasing attention in the past two decades. VAPEX suffers from slow mass transfer and inefficient gravity drainage. CSI is a solvent huff-and-puff process and its production period is usually much shorter in comparison with the solvent injection and soaking periods, limiting the average oil production rate over the entire process. This paper proposes a new process, dynamic solvent process (DSP), to exploit the merits of VAPEX (continuous production) and CSI (stronger driving force) and reduce their respective limitations (inefficient gravity drainage and periodic production). DSP is a cyclic process and each cycle consists of two periods: a stable pressure period and a pressure reduction period, through which solvent is cyclically injected and oil is continuously produced. A set of laboratory experiments were performed to validate and analyze the DSP process. During the pressure reduction period of DSP, a foamy oil flow phenomenon was observed when the pressure reached the so-called pseudo-bubble point. The foamy oil flow not only enhanced the oil production but also improved mass transfer due to the enlarged oil-solvent contact area. Experimental results showed that the oil production rates of VAPEX and CSI were respectively enhanced by 57-123 % and 17-99 % by DSP with different well configurations.

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A new solvent-based enhanced heavy oil recovery method: Cyclic production with continuous solvent injection

Cited by 55 publications

References 17 publications

Enhanced Oil Recovery Techniques for Indian Reservoirs

Enhanced Oil Recovery Techniques for Indian Reservoirs

Experimental Study of the Effect of Composite Solvent and Asphaltenes Contents on Efficiency of Heavy Oil Recovery Processes at Injection of Light Hydrocarbons

Dynamic solvent process (DSP) for enhancing heavy oil recovery

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