An improved viscosity prediction model of extra heavy oil for high temperature and high pressure

Jin, Fang; Jiang, Tingting; Yuan, Chengdong; Varfolomeev, Mikhail A.; Wan, Fei; Yan, Zheng; Li, Xiaowei

doi:10.1016/j.fuel.2022.123852

Cited by 20 publications

(6 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Vertically, heavy oil is distributed in many formations, such as the Paleozoic buried hill, the Mesozoic formation, the Paleogene Shahejie formation, and the Neogene Guantao formation. The burial depth of the reservoir is generally less than 2500 m, and the main oil and gas-bearing strata are the Shahejie formation and the Guantao formation. , The establishment and evolution of heavy oil reservoirs require a lengthy geological process. − Scholars from around the world have long debated the characteristics, genetic mechanisms, and main controlling factors of heavy oil in this area and have suggested that heavy oil in this area includes oil of both primary and secondary origin. , However, the oil of secondary origin is predominant, which indicates that the thickening mechanism of the heavy oil mainly includes water washing, biodegradation, and oxidation.…”

Section: Introductionmentioning

confidence: 98%

“…The burial depth of the reservoir is generally less than 2500 m, and the main oil and gas-bearing strata are the Shahejie formation and the Guantao formation. 13 , 14 The establishment and evolution of heavy oil reservoirs require a lengthy geological process. 15 − 18 Scholars from around the world have long debated the characteristics, genetic mechanisms, and main controlling factors of heavy oil in this area and have suggested that heavy oil in this area includes oil of both primary and secondary origin.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterization and Origin Analysis of Heavy Oil in the Western Sag of the Liaohe Basin

Hu²,

Liu³

et al. 2022

ACS Omega

View full text Add to dashboard Cite

This article systematically examines the physical characteristics, group composition characteristics, and geochemical characteristics of heavy oil in the Western Sag of the Liaohe Basin. The examination is based on the separation and quantitative analysis of crude oil and rock samples, as well as the analysis of test results from gas chromatography with saturated hydrocarbons and aromatic hydrocarbons. It also analyzes the generation mechanism and main controlling factors of heavy oil. The results show that heavy oil has low wax content (1.8–9.2%), a low freezing point (−19–38 °C), low sulfur content (0.28–0.5%), high colloid and asphaltene content, high density (0.926–1.008 g/cm 3 ), and high viscosity (328–231910 mPa·s). The physical properties of the heavy oil in the same formation decrease from the depression’s edge toward its center and within the same area, and the physical properties in different formations also have an inverse relationship with burial depth. Biodegradation is the main reason for the formation of heavy oil. Based on the biodegradation degree, there are four types of heavy oil: undegraded, weakly degraded, moderately degraded, and severely degraded. The main controlling factors of biodegradation are temperature and the water environment. This study provides a method for studying the genetic mechanism of heavy oil, an approach for discovering similar genetic oil and gas, and a basis for the transformation of heavy oil field development.

show abstract

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Characterization and Origin Analysis of Heavy Oil in the Western Sag of the Liaohe Basin

Hu²,

Liu³

et al. 2022

ACS Omega

View full text Add to dashboard Cite

show abstract

“…It has been shown that when the temperature is as high as >120 °C, heavy oil flows more easily because of thermal decomposition. 37,44 In terms of pressure, high pressure promotes the miscibility of fluids and heavy oil, thereby increasing internal friction and reducing fluid-oil relative velocity. 45,46 Thus, it is necessary to understand the mechanisms of molecular diffusion and dissolution of multithermal fluids, that is, CO 2 , CH 4 , and N 2 , in heavy oil under high temperatures and pressures.…”

Section: Introductionmentioning

confidence: 99%

“…Despite the high sensitivities of molecular diffusion to pressure and temperature, the related studies on diffusion and dissolution are mostly conducted at temperatures of 30–80 °C and pressures of 2–15 MPa, , which are far below the practical operating conditions for heavy oil production via multithermal fluid stimulation. It has been shown that when the temperature is as high as >120 °C, heavy oil flows more easily because of thermal decomposition. , In terms of pressure, high pressure promotes the miscibility of fluids and heavy oil, thereby increasing internal friction and reducing fluid-oil relative velocity. , Thus, it is necessary to understand the mechanisms of molecular diffusion and dissolution of multithermal fluids, that is, CO 2 , CH 4 , and N 2 , in heavy oil under high temperatures and pressures.…”

Section: Introductionmentioning

confidence: 99%

Diffusion and Dissolution Behaviors of CO₂, CH₄, and N₂ in Heavy Oil under High-Temperature and -Pressure Conditions: Insights into Heavy Oil Production via Multithermal Fluid Stimulation

Su,

Wang,

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

To comprehend heavy oil production well via the multithermal fluid stimulation technology, the diffusion and dissolution processes of CO2, CH4, and N2 in heavy oil were conducted under a temperature range of 308.15–423.15 K and bulk pressures up to 20 MPa. Accordingly, the diffusion coefficients and solubilities of CO2, CH4, and N2 were measured. Results indicated that the diffusion coefficients of CO2, CH4, and N2 in heavy oil increase with rising temperature and decrease with rising pressure. The diffusion capability of these fluids in heavy oil conforms to the order CH4 > CO2 > N2. Moreover, the solubility of CO2, CH4, and N2 in heavy oil is negatively related to temperature and positively related to pressure. The solubility of various fluids in heavy oil decreases in the sequence of CO2 > CH4 > N2. The diffusion and dissolution of CO2, CH4, and N2 could induce volume expansion, colloidal structure damage, intermolecular force alteration, gap filling, and light component extraction toward heavy oil, thereby promoting its quality and recovery. Overall, heavy oil production via the multithermal fluid stimulation technology is recommended to be implemented under high-temperature and -pressure conditions.

show abstract

“…In the last few decades, the continuous growth in world energy needs driven by economic growth and the enormous population expansion have caused a decrease in the availability of petroleum resources with characteristics that are amenable to refining and effective production [1,2]. Heavy crude oil transportation through pipelines is a problem because of the oil's inability to flow freely [3,4]. Heavy oil transportation through pipelines is much more complicated without reducing the viscosity because a massive energy demand is needed to offset the higher drop in pressure through the pipeline due to high viscosity [5].…”

mentioning

confidence: 99%

Enhancing Heavy Crude Oil Flow in Pipelines through Heating-Induced Viscosity Reduction in the Petroleum Industry

Hamied¹,

Ali²,

Sukkar³

2023

Fluid Dynamics &Amp; Materials Processing

View full text Add to dashboard Cite

The process of transporting crude oil across pipelines is one of the most critical aspects of the midstream petroleum industry. In the present experimental work, the effect of temperature, pressure drop, and pipe diameter on the flow rate of heavy crude oil have been assessed. Moreover, the total discharge and energy losses have been evaluated in order to demonstrate the improvements potentially achievable by using solar heating method replacing pipe, and adjusting the value of the initial pressure difference. Crude oil of API = 20 has been used for the experiments, with the studied pipelines sections connecting the separator unit to the storage tank operating at a temperature of 25°C-100°C, pressure drop of 3, 4, 5, and 6 kg/cm 2 , and with pipe diameter of 4, 6, and 8 in. The results show that on increasing the temperature and/or the pressure drop, the flow rate through the pipeline becomes higher, thus raising the total pumping energy (as the pipe diameter increase), while energy losses increase from the last separator to the storage tank in the field. A pipe diameter increase can also produce a growth of the total pumping energy (i.e., energy losses increase). The results of the present analysis suggest that employing an optimal temperature (50°C) is needed to ensure good performance.

show abstract

An improved viscosity prediction model of extra heavy oil for high temperature and high pressure

Cited by 20 publications

References 20 publications

Characterization and Origin Analysis of Heavy Oil in the Western Sag of the Liaohe Basin

Characterization and Origin Analysis of Heavy Oil in the Western Sag of the Liaohe Basin

Diffusion and Dissolution Behaviors of CO₂, CH₄, and N₂ in Heavy Oil under High-Temperature and -Pressure Conditions: Insights into Heavy Oil Production via Multithermal Fluid Stimulation

Enhancing Heavy Crude Oil Flow in Pipelines through Heating-Induced Viscosity Reduction in the Petroleum Industry

Contact Info

Product

Resources

About

An improved viscosity prediction model of extra heavy oil for high temperature and high pressure

Cited by 20 publications

References 20 publications

Characterization and Origin Analysis of Heavy Oil in the Western Sag of the Liaohe Basin

Characterization and Origin Analysis of Heavy Oil in the Western Sag of the Liaohe Basin

Diffusion and Dissolution Behaviors of CO2, CH4, and N2 in Heavy Oil under High-Temperature and -Pressure Conditions: Insights into Heavy Oil Production via Multithermal Fluid Stimulation

Enhancing Heavy Crude Oil Flow in Pipelines through Heating-Induced Viscosity Reduction in the Petroleum Industry

Contact Info

Product

Resources

About

Diffusion and Dissolution Behaviors of CO₂, CH₄, and N₂ in Heavy Oil under High-Temperature and -Pressure Conditions: Insights into Heavy Oil Production via Multithermal Fluid Stimulation