The deposition of asphaltenes under high-temperature and high-pressure (HTHP) conditions

Xiong, Ruiying; Guo, Jixiang; Kiyingi, Wyclif; Xu, Huifang; Wu, Xinpeng

doi:10.1016/j.petsci.2022.08.026

Cited by 14 publications

(3 citation statements)

References 40 publications

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“…The bubble point pressure and temperature are two significant parameters in the crude oil compositional analysis. The bubble point pressure indicates the onset pressure for phase separation during pressure drawdown. , Therefore, this pressure point has also been proven to correspond to the maximum deposition risk of asphaltene . The Glaso model was used to define this point, given by eq …”

Section: Methodsmentioning

confidence: 99%

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Forecasting Asphaltene Deposition Zones at High Temperature and High Pressure via Bubble Point Pressure Analysis

Xiong,

Guo,

Kiyingi

et al. 2023

Ind. Eng. Chem. Res.

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A fast and reliable method to predict the zones of asphaltene deposition in oilfield wells is proposed. The study reveals that the critical colloidal instability index of crude oil during the production process increases, causing the crude oil colloidal system to be more prone to instability. The standing and Glaso models were used to identify the dissolved gas−oil ratio in order to predict the location of asphaltene deposition. Results show that the expected priority plugging removal region predicted by the model agrees with the actual plugging position observed in the field. The proposed model can guide the design of oil field plugging removal technology and chemical dosage.

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Section: Methodsmentioning

confidence: 99%

“…31,32 Therefore, this pressure point has also been proven to correspond to the maximum deposition risk of asphaltene. 33 The Glaso model was used to define this point, given by eq 4. where P bbp * is…”

Section: Bubble Point Pressure Modelmentioning

confidence: 99%

Forecasting Asphaltene Deposition Zones at High Temperature and High Pressure via Bubble Point Pressure Analysis

Xiong,

Guo,

Kiyingi

et al. 2023

Ind. Eng. Chem. Res.

Self Cite

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“…At present, the methods for studying the deposition characteristics of asphaltene mainly include the microscopic method, capillary microdeposition simulation, the dynamic light scattering method, and so on [10][11][12][13][14][15][16]. But the microscopy methods are less effective under high-temperature and high-pressure experimental conditions.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Asphaltene Deposition Behavior in Diluted Heavy Oil under High-Pressure Conditions

Yang,

Wu,

Guo

et al. 2023

Energies

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Some oil wells in the Tahe oilfield have been reported to produce extremely heavy oil due to asphaltene deposition. To enhance the flow of crude oil through the wellbore, engineers adopted the use of light oil from nearby wells to dissolve the heavy crude in the wells’ sections to maximize recovery from the Tahe oilfield. However, this mixing has led to the problem of accelerated asphaltene deposition, which often blocks the wellbore in the process. In this research, the factors that influence the stability of diluted heavy oil, temperature, and mixing ratio on asphaltene deposition characteristics under high pressure are studied using a high-temperature and high-pressure crude oil flow property experimental device based on the differential pressure method. The results under high pressure show that the initial deposition pressure of asphaltene decreases as the experimental temperature increases. With an increase in the mixing light oil ratio, the initial deposition pressure of diluted heavy oil increases, and the deposition trend of asphaltene strengthens. The asphaltene accumulation and deposition will be aggravated by filling quartz sand and pipe diameter changes. The research here is helpful to understand the deposition characteristics of asphaltene during the production of diluted heavy oil. It offers significant guidance in the prevention and control of asphaltene precipitation in heavy oil wells.

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Microfluidic investigation on asphaltene interfaces attempts to carbon sequestration and leakage: Oil-CO2 phase interaction characteristics at ultrahigh temperature and pressure

Zhang

et al. 2023

Applied Energy

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The deposition of asphaltenes under high-temperature and high-pressure (HTHP) conditions

Cited by 14 publications

References 40 publications

Forecasting Asphaltene Deposition Zones at High Temperature and High Pressure via Bubble Point Pressure Analysis

Forecasting Asphaltene Deposition Zones at High Temperature and High Pressure via Bubble Point Pressure Analysis

Characterization of Asphaltene Deposition Behavior in Diluted Heavy Oil under High-Pressure Conditions

Microfluidic investigation on asphaltene interfaces attempts to carbon sequestration and leakage: Oil-CO2 phase interaction characteristics at ultrahigh temperature and pressure

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