Vaporization of Crude Oil by Supercritical CO<sub>2</sub> at Different Temperatures and Pressures: Example from Gorm Field in the Danish North Sea

Rudyk, Svetlana Nikolayevna; Spirov, Pavel; Samuel, P.; Joshi, Sanket

doi:10.1021/acs.energyfuels.7b00313

Cited by 13 publications

(7 citation statements)

References 36 publications

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“…The reduction of the interfacial tension is more significant at high pressures [22, 23]. At high pressures, CO 2 can vaporize the light and intermediate components of the oil, which is considered as one of the oil recovery mechanisms, especially at high pressure reservoirs [24]. Fig.…”

Section: Introductionmentioning

confidence: 99%

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Phase behavior and fluid interactions of a CO2-Light oil system at high pressures and temperatures

Rezk

Foroozesh

2019

Heliyon

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This paper investigates the phase behavior and mutual interactions between a light crude oil and CO 2 at high pressures and high temperatures (HPHT). To do so, we have measured PVT properties of the CO 2 -oil system at HPHT using a PVT setup. We have also tried to present a detailed methodology for measuring PVT properties of CO 2 -oil systems and highlight the difficulties such as oil vaporization by CO 2 during the experiments. A crude oil sample, collected from a Malaysian oil field, was used here. Our experiments indicated that, CO 2 solubility in the oil increased at higher pressures when measured at a fixed temperature. Our experiments also showed that increasing the test temperature would reduce CO 2 solubility in the oil, while its effect is more significant at higher pressures. The swelling factor (SF) measurements showed an increasing trend with pressure up to a certain value so-called extraction pressure, at which, the SF started to be reduced even became less than one. The measurements of oil viscosity indicated that CO 2 dissolution in the oil sample could reduce the mixture viscosity up to 61%. The interfacial tensions between CO 2 and the crude oil at different pressures were also measured while the results were used to estimate the minimum miscibility pressure (MMP) and the first contact miscibility (FCM) pressure. The IFT measurements at various pressures displayed a reduction trend as a result of more CO 2 dissolution in the oil but with two different slopes. That is, at lower pressure values, the measured IFTs were sharply reduced with pressure, while the reduction rate of the IFT became less when pressures exceeded the extraction pressure. This study helps with determining the optimum pressure and temperature conditions of CO 2 -oil systems to have a minimum IFT, a maximum CO 2 solubility and SF, and a minimum oil viscosity that are favorable for CO 2 -enhanced oil recovery projects. Additionally, the methodology presented here gives guidelines on how to design PVT experiments of CO 2 -oil systems for petroleum and chemical engineering applications.

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Section: Introductionmentioning

confidence: 99%

“…Rudyk et al. [24] investigated the oil recovery by vaporization mechanism using supercritical CO 2 at various conditions of temperatures and pressures. Their results showed that crude oil vaporization by supercritical CO 2 can result in favorable recovery factors at high pressure reservoirs.…”

Section: Introductionmentioning

confidence: 99%

Phase behavior and fluid interactions of a CO2-Light oil system at high pressures and temperatures

Rezk

Foroozesh

2019

Heliyon

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“…Compared with conventional CO 2 -EOR, the soaking stage after CO 2 fracturing makes it possible for supercritical CO 2 to give full play to its miscibility and extraction effect on crude oil under high pressure, thereby enhancing oil recovery and CO 2 sequestration of tight oil reservoirs. ,, To explore the interaction mechanism of supercritical CO 2 and crude oil under high-pressure conditions, the lab experiments described below were carried out.…”

Section: Resultsmentioning

confidence: 99%

“…During fracturing, CO 2 undergoes complex phase changes under the influence of external temperature and pressure changes, which will change the physical properties of CO 2 and affect the stimulation and CO 2 sequestration effect. 21,22 Therefore, the investigation of CO 2 phase evolution in the fracturing process forms the first step in studying the stimulation and CO 2 sequestration mechanisms. Accordingly, a pilot field test of fracturing was carried out in the H 87 tight oil block of the Jilin Oilfield, and sensors were set at the bottom of the well to collect bottom-hole temperature and pressure data during and after fracturing.…”

Section: Methodsmentioning

confidence: 99%

Stimulation and Sequestration Mechanism of CO₂ Waterless Fracturing for Continental Tight Oil Reservoirs

Tao

Meng

et al. 2021

ACS Omega

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CO2 fracturing is a promising technology for oil field development in tight, continental deposits, with potential advantages of enhanced oil recovery (EOR), CO2 sequestration, and water conservation. Compared with CO2-EOR techniques, such as CO2 huff and puff and CO2 flooding, CO2 can interact with reservoir rock and fluid under higher pressure conditions during fracturing, resulting in CO2 stimulation and sequestration effects that differ from those that occur during conventional CO2-EOR. In this paper, the CO2 interactions between CO2 and reservoirs in continental tight oil reservoirs under fracturing conditions are systematically studied through laboratory experiments. The results show that under high pressure, CO2 effectively changes the pore structure through the extraction of hydrocarbons, dissolution of the rock matrix, and migration of minerals. CO2 dissolution of the rock matrix can significantly increase the number and complexity of fractures. Furthermore, CO2 has a higher solubility in formation fluid under high-pressure conditions. Given the higher pressures, CO2 forms a miscible phase with crude oil, diffuses more deeply into the formation, and reacts fully with the reservoir minerals and fluid during CO2 fracturing. Accordingly, CO2 can improve the permeability of the reservoir and flowability of crude oil significantly. Hence, CO2 fracturing can enhance oil recovery and CO2 sequestration more effectively. Core displacement experiments indicate that oil recovery of CO2 soaking process after CO2 fracturing is 36%, which is 12% and 9% higher than those of CO2 huff and puff and CO2 flooding with 5 pore volume, respectively. Field tests show that average oil production after CO2 fracturing is 1.42 times higher than that after CO2 flooding, which further validates the advantage of CO2 fracturing and demonstrates its huge application potential.

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“…More effective enhanced oil recovery (EOR) methods that ensure an economical production of the tail end (trapped oil) from these oil fields are being continuously researched. Such technologies include thermal flooding (steam injection, in-situ combustion), chemical (surfactants, polymers, solvents, alkali) flooding, miscible and immiscible gas displacement, and microbial EOR to produce the hard-to-recover oils in older fields [32][33][34]. Among these techniques, chemicals flooding techniques have emerged as one of the most effective techniques to improve crude oil recovery from maturing fields.…”

Section: Application Of Surfactants To Enhance Oil Recoverymentioning

confidence: 99%

Oleochemicals from Palm Oil for the Petroleum Industry

Rabiu¹,

Elias²,

Oyekola³

2018

Palm Oil

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Waste vegetable oils as a sustainable, low-cost and low-toxicity feedstock are attracting more interests for the production of oleochemicals that are excellent substitutes for petroleum-based chemicals widely used in the petroleum industry. The compounds resulting from transesterification-epoxidation-sulfonation of waste vegetable oils have great potential as bio-based surface active agents with extensive application in the petroleum industry. The oleo-surfactant from vegetable oils is gaining increasing attention as alternative to the costlier and non-biodegradable petrochemical-based surfactants currently in use. This chapter reports on cost-effective processes to convert waste palm oil into high-grade surfactants aiming at its filed application in petroleum production to enhance recovery of crude oils from reservoir. The first section focused on the formulation of a high-performance bifunctional solid catalyst with basic and acidic sites that are able to mediate simultaneous esterification and transesterification reactions. In the second part, the methyl esters were epoxidized and then sulfonated to produce the anionic surfactant. The feedstock and the methyl ester produced were analyzed with gas chromatography-mass spectrophotometer (GC-MS) and the sulfonated functional group (S═O) was detected using Fourier-transform infrared spectroscopy (FTIR) analysis.

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Vaporization of Crude Oil by Supercritical CO₂ at Different Temperatures and Pressures: Example from Gorm Field in the Danish North Sea

Cited by 13 publications

References 36 publications

Phase behavior and fluid interactions of a CO2-Light oil system at high pressures and temperatures

Phase behavior and fluid interactions of a CO2-Light oil system at high pressures and temperatures

Stimulation and Sequestration Mechanism of CO₂ Waterless Fracturing for Continental Tight Oil Reservoirs

Oleochemicals from Palm Oil for the Petroleum Industry

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Vaporization of Crude Oil by Supercritical CO2 at Different Temperatures and Pressures: Example from Gorm Field in the Danish North Sea

Cited by 13 publications

References 36 publications

Phase behavior and fluid interactions of a CO2-Light oil system at high pressures and temperatures

Phase behavior and fluid interactions of a CO2-Light oil system at high pressures and temperatures

Stimulation and Sequestration Mechanism of CO2 Waterless Fracturing for Continental Tight Oil Reservoirs

Oleochemicals from Palm Oil for the Petroleum Industry

Contact Info

Product

Resources

About

Vaporization of Crude Oil by Supercritical CO₂ at Different Temperatures and Pressures: Example from Gorm Field in the Danish North Sea

Stimulation and Sequestration Mechanism of CO₂ Waterless Fracturing for Continental Tight Oil Reservoirs