Isothermal oxidation behavior of heavy crude oil and its low-temperature oxidized oils: Implications for in-situ upgrading of heavy oil

Fuel ◽  
2021 ◽  
pp. 122704
Author(s):  
Shuai Zhao ◽  
Haiming Gao ◽  
Wanfen Pu ◽  
Mikhail A. Varfolomeev ◽  
Chengdong Yuan
Keyword(s):  
Low Temperature ◽  
Crude Oil ◽  
Heavy Oil ◽  
Oxidation Behavior ◽  
Isothermal Oxidation ◽  
Heavy Crude Oil ◽  
Heavy Crude

scholarly journals In situ catalytic upgrading of heavy crude oil through low-temperature oxidation

2016 ◽  
Vol 13 (3) ◽  
pp. 476-488 ◽  
Author(s):  
Hu Jia ◽  
Peng-Gang Liu ◽  
Wan-Fen Pu ◽  
Xian-Ping Ma ◽  
Jie Zhang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Crude Oil ◽  
Heavy Crude Oil ◽  
Low Temperature Oxidation ◽  
Temperature Oxidation ◽  
Catalytic Upgrading ◽  
Heavy Crude

scholarly journals Thermogravimetric and differential thermogravimetric analysis of effect of areal compositional gradient on combustion kinetics of Mexican extra-heavy crude oil

2020 ◽  
Vol 75 ◽  
pp. 25
Author(s):  
Carlos A. Avendaño-Salazar ◽  
Edgar Ramírez-Jaramillo ◽  
José L. Mendoza de la Cruz ◽  
A. Albiter
Keyword(s):  
Crude Oil ◽  
Thermal Analyses ◽  
Linear Method ◽  
Combustion Process ◽  
Physicochemical Characterization ◽  
Heavy Crude Oil ◽  
Compositional Gradient ◽  
Heavy Crude ◽  
Compositional Variations

Numerous studies have contributed to a better understanding of the in-situ combustion process that have allowed to determine the most suitable conditions to carry out this process in reservoirs from volatile to extra-heavy crude oils. One of the elements that alter the behavior of this process is the compositional gradient. In this work, the effects of areal compositional variations in the in-situ combustion of three Mexican extra-heavy crude oil samples obtained from the same reservoir and extracted under similar production conditions were studied. Physicochemical, thermal, and kinetics analyses (by means of one non-linear method) were carried out to study the areal compositional variations of the extra-heavy crude oil samples, and their effect on the in-situ combustion of this type of crude oil was also analyzed. Physicochemical characterization includes measurements of viscosity, density, water content, and SARA content. Thermal analyses were performed using three heating rates (5 °C/min, 10 °C/min, and 15 °C/min), while kinetic analyses were calculated using Friedman’s method.

scholarly journals Characteristics of Newly Isolated Geobacillus sp. ZY-10 Degrading Hydrocarbons in Crude Oil

2015 ◽  
Vol 64 (3) ◽  
pp. 253-263 ◽  
Author(s):  
Yumei Sun ◽  
Zhanguo Ning ◽  
Fan Yang ◽  
Xianzhen Li
Keyword(s):  
Crude Oil ◽  
Cellular Fatty Acid ◽  
Short Chain ◽  
Heavy Crude Oil ◽  
16S Rdna Sequence ◽  
Carbohydrate Fermentation ◽  
Heavy Crude ◽  
Production Tolerance ◽  
Long Chain

An obligately thermophilic strain ZY-10 was isolated from the crude oil in a high-temperature oilfield, which was capable of degrading heavy crude oil. Phenotypic and phylogenetic analysis demonstrated that the isolate should be grouped in the genus Geobacillus, which shared the highest similarity (99%) of the 16S rDNA sequence to Geobacillus stearothermophilus. However, the major cellular fatty acid iso-15:0 (28.55%), iso-16:0 (24.93%), iso-17:0 (23.53%) and the characteristics including indole production, tolerance to NaN3 and carbohydrate fermentation showed some difference from the recognized species in the genus Geobacillus. The isolate could use tridecane, hexadecane, octacosane and hexatridecane as sole carbon source for cell growth, and the digesting rate of long-chain alkane was lower than that of short-chain alkane. When the isolate was cultured in the heavy crude oil supplement with inorganic salts and trace yeast extract, the concentration of short-chain alkane was significantly increased and the content of long-chain alkane was decreased, suggesting that the larger hydrocarbon components in crude oil were degraded into shorter-chain alkane. Strain ZY-10 would be useful for improving the mobility of crude oil and upgrading heavy crude oil in situ.

Flow Patterns in Heavy Crude Oil-Water Flow

2001 ◽  
Author(s):  
Antonio C. Bannwart ◽  
Oscar M. H. Rodriguez ◽  
Carlos H. M. de Carvalho ◽  
Isabela S. Wang ◽  
Rosa M. O. Vara
Keyword(s):  
Crude Oil ◽  
Flow Pattern ◽  
Heavy Oil ◽  
Annular Flow ◽  
Effective Means ◽  
Practical Importance ◽  
Flow Patterns ◽  
Heavy Crude Oil ◽  
Oil Water ◽  
Heavy Crude

Abstract This paper is aimed to an experimental study on the flow patterns formed by heavy crude oil (488 mPa.s, 925.5 kg/m3 at 20 °C) and water inside vertical and horizontal 1 in. pipes. The interfacial tension was 29 dynes/cm. Effort is concentrated into flow pattern characterization, which was visually defined. The similarities with gas-liquid flow patterns are explored and the results are expressed in flow maps of the superficial velocities. In contrast with other studies, the annular flow pattern (‘core annular flow’) was observed in both horizontal and vertical test sections. In fact this flow pattern typically occurs in heavy oil-water flows at low water input fractions. Because of the practical importance of core flow in providing an effective means for heavy oil production and transportation, this paper discusses two criteria that favor its occurrence in pipes.

Integrative Investigation of Low-Temperature Oxidation Characteristics and Mechanisms of Heavy Crude Oil

2019 ◽  
Vol 58 (31) ◽  
pp. 14595-14602 ◽  
Author(s):  
Shuai Zhao ◽  
Wanfen Pu ◽  
Mikhail A. Varfolomeev ◽  
Chengdong Yuan ◽  
Alexander A. Rodionov
Keyword(s):  
Low Temperature ◽  
Crude Oil ◽  
Heavy Crude Oil ◽  
Low Temperature Oxidation ◽  
Temperature Oxidation ◽  
Oxidation Characteristics ◽  
Heavy Crude

Effects of aromatics, resins, and asphaltenes on oxidation behavior and kinetics of heavy crude oil

2020 ◽  
Vol 38 (15) ◽  
pp. 815-822 ◽  
Author(s):  
Wan-Fen Pu ◽  
Liang-Liang Wang ◽  
Xiao-Qiang Peng ◽  
Nan Li ◽  
Shuai Zhao
Keyword(s):  
Crude Oil ◽  
Oxidation Behavior ◽  
Heavy Crude Oil ◽  
Heavy Crude ◽  
Kinetics Of

Oxidation characteristics of heavy crude oil in ignition process

2017 ◽  
Vol 20 (1) ◽  
Author(s):  
Yi-fei LIU ◽  
Kai LIU
Keyword(s):  
Crude Oil ◽  
Heavy Oil ◽  
Oil Reservoirs ◽  
Ignition Process ◽  
Oil Oxidation ◽  
Oxidation Reactions ◽  
Heavy Oil Reservoirs ◽  
Oxidation Characteristics ◽  
Heavy Crude

Abstract:The ignition process has a significant influence on the success of in-situ combustion at heavy oil reservoirs. During this process, oxidation reactions between crude oil and injected air mainly occurred. In this paper, a series of oxidation experiments were performed at different reaction temperatures and air-oil ratios to investigate the heavy oil oxidation characteristics at different stages of the ignition process. The results revealed that heat release and production of CO and CO

Flow Patterns in Heavy Crude Oil-Water Flow

2004 ◽  
Vol 126 (3) ◽  
pp. 184-189 ◽  
Author(s):  
Antonio C. Bannwart ◽  
Oscar M. H. Rodriguez ◽  
Carlos H. M. de Carvalho ◽  
Isabela S. Wang ◽  
Rosa M. O. Vara
Keyword(s):  
Crude Oil ◽  
Flow Pattern ◽  
Heavy Oil ◽  
Annular Flow ◽  
Effective Means ◽  
Practical Importance ◽  
Flow Patterns ◽  
Heavy Crude Oil ◽  
Oil Water ◽  
Heavy Crude

This paper is aimed to an experimental study on the flow patterns formed by heavy crude oil (initial viscosity and density 488 mPa s, 925.5kg/m3 at 20°C) and water inside vertical and horizontal 2.84-cm-i.d. pipes. The oil-water interfacial tension was 29 dyn/cm. Effort is concentrated into flow pattern characterization, which was visually defined. The similarities with gas-liquid flow patterns are explored and the results are expressed in flow maps. In contrast with other studies, the annular flow pattern (“core annular flow”) was observed in both horizontal and vertical test sections. These flow pattern tends to occur in heavy oil-water flows at low water input fractions. Because of the practical importance of core flow in providing an effective means for heavy oil production and transportation, this paper discusses criteria that favor its occurrence in pipes.

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