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Asphaltene Deposition during CO2 Flooding in Ultralow Permeability Reservoirs: A Case Study from Changqing Oil Field by Li Rong-tao; Liao Xin-wei; Zou Jian-dong; Gao Chang-wang; Zhao Dong-feng; Zhang Yuan-dong; Zhou Xing-ze is a Engineering article available to read on EtoBox.
What is Asphaltene Deposition during CO2 Flooding in Ultralow Permeability Reservoirs: A Case Study from Changqing Oil Field about?
Asphaltene deposition is a common phenomenon during CO2 flooding in ultralow permeability reservoirs. The deposited asphaltene occupies the pore volume and decreases permeability, resulting in serious formation damage and pore well productivity. It is urgent to investigate the asphaltene deposition mechanisms, adverse effects, and preventive measures. However, few asphaltene deposition investigations have been systematically conducted by now. In this research, the asphaltene precipitation mechanisms and adverse effects were comprehensively investigated by using experimental and numerical methods. To study the effects of pressure, asphaltene content, and temperature on asphaltene precipitation qualitatively and quantitatively, the microscope visible detection experiment and the PVT cell static experiment were firstly conducted. The adverse effects on porosity and permeability resulted from asphaltene deposition were also studied by the core flooding experiment. Secondly, simulation models of asphaltene precipitation and deposition were developed and validated by experimental data. Finally, a case study from Changqing oil field was presented to analyze the asphaltene deposition chara
Who reads Asphaltene Deposition during CO2 Flooding in Ultralow Permeability Reservoirs: A Case Study from Changqing Oil Field?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Li Rong-tao; Liao Xin-wei; Zou Jian-dong; Gao Chang-wang; Zhao Dong-feng; Zhang Yuan-dong; Zhou Xing-ze
- Publisher
- Hindawi Limited
- Published
- 2021
- Language
- EN
- Field
- Engineering (Physical Sciences)