An Investigation of Hybrid Steam-Solvent Injection for Increasing Economy and Reducing CO<sub>2</sub>Emission

Suranto, A. M.; Bae, Wisup; Permadi, Asep Kurnia

doi:10.1080/10916466.2014.953683

Cited by 10 publications

(4 citation statements)

References 8 publications

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“…The first is energy efficiency, defined as the sum of enthalpies from steam injection used to produce bitumen per unit volume (cumulative energy oil ratio [cEOR]). The second factor is solvent efficiency, which is defined as the amount of solvent used to produce bitumen per unit volume (cumulative solvent oil ratio (CSOR)) (Suranto et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

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Investigation of Horizontal Well for Cyclic Steam-Solvent Stimulation to Escalate Heavy Oil Production

Suranto

Lukmana²,

Ragil³

et al. 2022

J. earth energy eng.

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Indonesia's oil reserves that have been exploited on a large scale are light oil because the recovery technique is much easier than the heavy oil. Generally, heavy oil has a high viscosity compared to light oil. In most cases, to reduce high oil viscosity (greater than 50 cp) using steam injection. Cyclic steam stimulation (CSS) is one of processes that commercially developed by numerous oil company to producing of heavy oil reservoir. The CSS can apply in vertical well or horizontal well. The research of CSS in horizontal well is still limited reported in the literature. On the other hand, the horizontal well has drainage area more wide compared with vertical well. In this study, solvent addition in cyclic steam stimulation will be tested with reservoir simulation. The steam was injected on the well, after that soaking time and the last was producing of liquid fluid reservoir. As the result, the oil production increases 3 times higher compared to without solvent. Furthermore, cumulative steam oil ratio (CSOR) and cumulative energy oil ratio (CEOS) decrease about 50% and 16%, respectively. In here, effect of solvent added in the steam, the steam distribution and drainage area wider.

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Section: Resultsmentioning

confidence: 99%

“…As a result of the combination, the bitumen viscosity will be considerably lowered (i.e., dissolved solvent and the heat from the steam). Condensing a suitable solvent at the same temperature as the water phase is preferable (Suranto et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Investigation of Horizontal Well for Cyclic Steam-Solvent Stimulation to Escalate Heavy Oil Production

Suranto

Lukmana²,

Ragil³

et al. 2022

J. earth energy eng.

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“…20 The energy intensity of the production processes is also reduced along with greenhouse gas emissions. 21,22 Solvent diffusion is slow relative to heat transfer at the pore scale. 23 Diverse explanations have been proposed for observed production enhancements.…”

Section: Introductionmentioning

confidence: 99%

“…The viscosity of heavy oil and bitumen are reduced significantly even for a small solvent mass fraction. , Solvents, such as propane, butane, and pentane, and so forth, can be injected alone or co-injected with steam to produce heavy oils and bitumen. − Their usage reduces or eliminates steam usage, and the solvent co-injection can improve production rates . The energy intensity of the production processes is also reduced along with greenhouse gas emissions. , …”

Section: Introductionmentioning

confidence: 99%

Discontinuous Displacement at Solvent–Immobile Hydrocarbon Interfaces

2020

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Concerns over the environmental impacts of thermal production methods for bitumen and heavy oil have led to the exploration of alternative technologies including solvent-assisted production methods. While solvent-assisted production methods have been studied extensively, the apparent diffusion coefficients of the penetrating solvent 1–2 orders of magnitude greater than those predicted for Fickian diffusion applicable to liquid mixtures are required to match production histories. “Surface renewal” and “sloughing” mechanisms have been advanced to explain these higher solvent penetration rates into reservoirs during production but have not been observed directly or included in physical models. In this work, we use high-resolution X-ray videography to investigate solvent penetration at interfaces between a model solvent (n-pentane) and model immobile reservoir fluid (octacosane) over time to observe “surface renewal” and “sloughing” directly for the first time. We show that for horizontal interfaces (octacosane below), interface displacement arises solely from diffusion and rates of displacement are slow (∼10–2 μm/s). For vertical pentane–octacosane interfaces and horizontal pentane–octacosane interfaces (pentane below), steady displacement rates, an order of magnitude greater than for diffusion alone, are punctuated by a rapid detachment of ∼30 μm layers of octacosane-enriched liquid from the interface at ∼150 s intervals. For vertical interfaces that dominate production processes especially in thin reservoirs, average interface displacement rates around 0.5 μm/s are realized. Our findings highlight the impact of interface orientation on interface displacement rate and provide quantitative insights into the kinetics of solvent-assisted bitumen and heavy oil production processes in high permeability reservoirs. Further experimental and theoretical study is required to understand and quantify interfacial displacement effects in low permeability reservoirs.

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Solvent-steam coinjection

Ahmadi¹

2023

Sustainable in-Situ Heavy Oil and Bitumen Recovery

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An Investigation of Hybrid Steam-Solvent Injection for Increasing Economy and Reducing CO₂Emission

Cited by 10 publications

References 8 publications

Investigation of Horizontal Well for Cyclic Steam-Solvent Stimulation to Escalate Heavy Oil Production

Investigation of Horizontal Well for Cyclic Steam-Solvent Stimulation to Escalate Heavy Oil Production

Discontinuous Displacement at Solvent–Immobile Hydrocarbon Interfaces

Solvent-steam coinjection

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An Investigation of Hybrid Steam-Solvent Injection for Increasing Economy and Reducing CO2Emission

Cited by 10 publications

References 8 publications

Investigation of Horizontal Well for Cyclic Steam-Solvent Stimulation to Escalate Heavy Oil Production

Investigation of Horizontal Well for Cyclic Steam-Solvent Stimulation to Escalate Heavy Oil Production

Discontinuous Displacement at Solvent–Immobile Hydrocarbon Interfaces

Solvent-steam coinjection

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Product

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An Investigation of Hybrid Steam-Solvent Injection for Increasing Economy and Reducing CO₂Emission