How to select the right solvent for solvent-aided steam injection processes

Hasçakir, Berna

doi:10.1016/j.petrol.2016.07.038

Cited by 51 publications

(5 citation statements)

References 26 publications

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“…Besides the direct application to the development of better extraction procedures, understanding the nature of the precipitated material can have a great impact on the development of deposition models and the handling of asphaltenic deposits. For instance, solvent power or the ability of a solvent to completely or partially dissolve a solute plays an important role when different hydrocarbons are injected downhole to improve crude oil recovery. , In solvent injection processes, such as Vapex or N-solv, − the selection of the solvent is key because the plugging risk, emulsion formation, and improved recovery should be balanced to optimize operations.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Asphaltenes Precipitated at Different Solvent Power Conditions Using Atmospheric Pressure Photoionization (APPI) and Laser Desorption Ionization (LDI) Coupled to Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS)

et al. 2017

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In the present work, asphaltenes obtained using different n-heptane/crude oil ratios (HCORs) were analyzed using atmospheric pressure photoionization (APPI) and laser desorption ionization (LDI) coupled to Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS). The main objective was to improve the understanding of the components of the crude oil that precipitate under different solvent power conditions. Analysis of the compositional distribution of the asphaltenes reveals that the decrease in solvent power produces an increase in double bond equivalent (DBE) and the number of heteroatoms per molecule, while the carbon number remains almost unaltered. This finding seems to indicate that one of the main drivers for precipitation is aromaticity as HCOR increases and, consequently, the solvent power decreases. Both APPI and LDI FT-ICR MS produce average values that describe the general tendencies obtained using other techniques. Additionally, APPI FT-ICR MS closely matches bulk data of the most aromatic asphaltenes obtained in this study.

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Section: Introductionmentioning

confidence: 99%

Characterization of Asphaltenes Precipitated at Different Solvent Power Conditions Using Atmospheric Pressure Photoionization (APPI) and Laser Desorption Ionization (LDI) Coupled to Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS)

et al. 2017

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“…134 Ezeuko et al ( 2013) realized SAGD emulsion modeling in a simulation study, which showed that the formation of emulsion can increase oil production by increasing oil mobility. 135 Hascakir (2016) 136 revealed that emulsion formed in SAGD was more than that in steamflooding, which was caused by a longer contact time of steam/ asphaltene in SAGD than in steamflooding. 136 Wang et al (2016) studied the highly stable water-in-oil emulsion formed during steam injection, caused by the impacts of high temperature on water molecules and asphaltene aggregation.…”

Section: ■ Css Follow-up Processes and Simulationmentioning

confidence: 99%

“…135 Hascakir (2016) 136 revealed that emulsion formed in SAGD was more than that in steamflooding, which was caused by a longer contact time of steam/ asphaltene in SAGD than in steamflooding. 136 Wang et al (2016) studied the highly stable water-in-oil emulsion formed during steam injection, caused by the impacts of high temperature on water molecules and asphaltene aggregation. 137 Razi et al in 2016 measured the interfacial tension of the produced emulsion and revealed the effects of bitumen composition on emulsion properties.…”

Section: ■ Css Follow-up Processes and Simulationmentioning

confidence: 99%

A Critical Review of Reservoir Simulation Applications in Key Thermal Recovery Processes: Lessons, Opportunities, and Challenges

Yang

Nie

et al. 2021

Energy Fuels

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After a cyclic steam stimulation (CSS) process achieved accidental success in recovering heavy oil resources in the 1960s, thermal recovery processes started to unlock the door of in situ recovery of heavy oil and bitumen resources. After five decades of development, many thermal recovery processes have been developed, among which CSS and steam-assisted gravity drainage (SAGD) are two main commercialized processes. With the support of laboratory and field data, reservoir simulation can help engineers and researchers to understand recovery mechanisms, optimize operations, and forecast performance of either existing or emerging processes. In this paper, we present a critical review of applications of reservoir simulation on CSS, CSS follow-ups (steamflooding, liquid addition to steam for enhancing recovery (LASER), and in situ combustion), SAGD, solvent-assisted SAGD, and SAGD noncondensable gas (NCG) coinjection processes. This review and the analyses of these processes provide not only their clarifications from thermal simulation lessons but also an extensive summary of challenges still faced by industry. Moreover, they shed light on future research directions and opportunities for thermal recovery processes.

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“…The mixed hydrocarbon gas injection of steam has been shown to significantly enhance oil recovery in oilfield projects and laboratory experiments, and it significantly reduces the amount of steam injection [12,13]. Nevertheless, heavy oil has different components and physical properties, and the selection of suitable solvents is crucial to the successful development of the ES-SAGD technique [14][15][16][17][18][19]. Moreover, extraheavy oil has a high asphaltene content, and when the intermixture of extraheavy oil and some solvents occurs, asphaltene precipitation and hardening have been observed [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation and Numerical Simulation of Dynamic Characteristics for Multithermal Fluid-Assisted SAGD in Extraheavy Oil Reservoir

Zhang

Cao³

et al. 2021

Lithosphere

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Loss of the vast majority of heat and steam is an unavoidable problem encountered during conventional steam-assisted gravity drainage (SAGD) in extraheavy oil reservoirs. The noncondensate gas coinjection technique of reducing energy consumption and enhancing oil recovery can effectively solve this problem. Aiming at extraheavy oil with a high initial viscosity, the influence of noncondensate gases in multithermal fluids on the physical parameters of extraheavy oil was experimentally studied; the production characteristics and mechanism of multithermal fluid-assisted SAGD were studied through numerical simulation. A comparative investigation of the conventional SAGD and multithermal fluid-assisted SAGD injection schemes was conducted. The characteristics and mechanism of the steam chamber during the production processes were analyzed. The results show that a steam-gas-oil system forms in the steam chamber in the case of multithermal fluids. The steam chamber can be partitioned into four zones, and the flow of the oil mainly occurs in the steam condensation zone and the oil drainage zone. The injected multithermal fluids increase the horizontal expansion of the steam chamber, while the dissolved carbon dioxide reduces the residual oil saturation. Moreover, the nitrogen injection significantly reduces the heat loss and increases the heat utilization for multithermal fluid-assisted SAGD in developing extraheavy oil reservoirs.

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How to select the right solvent for solvent-aided steam injection processes

Cited by 51 publications

References 26 publications

Characterization of Asphaltenes Precipitated at Different Solvent Power Conditions Using Atmospheric Pressure Photoionization (APPI) and Laser Desorption Ionization (LDI) Coupled to Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS)

Characterization of Asphaltenes Precipitated at Different Solvent Power Conditions Using Atmospheric Pressure Photoionization (APPI) and Laser Desorption Ionization (LDI) Coupled to Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS)

A Critical Review of Reservoir Simulation Applications in Key Thermal Recovery Processes: Lessons, Opportunities, and Challenges

Experimental Investigation and Numerical Simulation of Dynamic Characteristics for Multithermal Fluid-Assisted SAGD in Extraheavy Oil Reservoir

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