Ying Jia

State Development & Investment Corporation (China)

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Lei Huang

Research Institute of Petroleum Exploration and Development

Lei Sun

Changchun University of Technology

Feiyang He

Zhejiang University

Jigen Ye

Research Institute of Petroleum Exploration and Development

Qijun Tang

University of Science and Technology of China

Xiangyang Hu

Jinan Disabled Persons Federation

Jianping Sheng

University of Electronic Science and Technology of China

Qingyan Yu

Research Institute of Petroleum Exploration and Development

Lei Huang

Shanghai Normal University

Yong Li

Shandong University

Cooperative Institutions

Research Institute of Petroleum Exploration and Development

Sinopec (China)

Zhejiang University

State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation

Tongji University

Chinese Academy of Sciences

Shanghai Normal University

Southwest Petroleum University

China Geological Survey

Ministry of Education of the People's Republic of China

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The Vapour-Vapour Interface Observation and Appraisement of a Gas-Condensate/Supercritical CO2 System

Scientific Reports (2018)

Ying Jia Yunqing Shi Lei Huang Yan Jin Rongchen Zheng

Injecting supercritical CO2 into gas reservoir is a novel trial to improve condensate gas recovery and decrease the hydrocarbon liquid dropout. A good understanding of the effect of supercritical CO2 on the phase behavior properties of these hydrocarbons is essential for accurately forecasting the displacing performance and storing process of the reservoirs with numerical simulators. This paper presents novel phase behavior experimental procedures and phase equilibrium evaluation methodology for gas-condensate phase system mixed with supercritical CO2 over a wide range of temperatures and pressures. A unique phase behavior phenomena was also reported. The mass transfer between two vapour phases was also measured. In order to interpret and identify the interface property between condensate gas and supercritical CO2, a multiphase thermodynamic VLV equilibrium model was established. Finally, taken YKL condensate gas in Northwest China as an example, the region where the conditions in terms of pressure, temperature and CO2 concentration can yield VLV equilibrium was found. The calculation results of multiphase thermodynamic model for condensate-CO2 system in this paper are close to the experimental data and can truthfully reflect the phase behavior of interface between CO2 and condensate gas. The research results indicate that it is the existence of the interface between CO2 and condensate gas that makes CO2 possible be an attractive option to successfully displace condensate gas and decrease CO2 emissions.

Interface (matter)

10.1038/s41598-018-32622-9

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Citations (5)

Periodic intense illumination in gas-solid phase photocatalysis: Efficient VOCs degradation at extremely low duty cycles

Chemical Engineering Journal (2024)

Zeyu Duan Jianping Sheng Qijun Tang Xinru Chen Ying Jia

Degradation

Duty cycle

10.1016/j.cej.2024.157124

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Prediction of asphaltene precipitation during CO 2 injection

Petroleum Exploration and Development (2010)

Lei Huang Pingping Shen Ying Jia Jigen Ye Li Shi

Aimed at the possible phenomenon of asphaltene precipitation during CO2 injection, the equation of state established by Anderko was introduced to describe the phase behavior of precipitated asphaltene because of its strong polarity. The fugacity of the precipitated asphaltene component was derived and a calculation model of gas-liquid-asphaltene equilibrium was constructed. After matching of PVT experimental data from a reservoir, the model was used to calculate the volume of precipitated asphaltene during CO2 injection. The precipitation model suggests that for a constant injection pressure, the asphaltene precipitation first increases and then decreases as CO2 increases with the asphaltene precipitation reaching a maximum when the gas phase occurs in the system. When the CO2 mole percentage of the CO2-oil system is constant, the precipitated asphaltene reaches a maximum at the saturation pressure. 注入CO2提高原油采收率过程中可能出现沥青质固相沉淀。鉴于沉淀沥青质的强极性,采用Anderko建立的缔合混合物状态方程描述沥青质的相行为,并由此推导沉淀沥青质组分的逸度计算公式,建立注气过程中气-液-沥青质三相相平衡数值计算模型。以某油田实际原油为例,利用模型计算了CO2注入过程中沥青质沉淀量,结果与实验数据相近,表明沥青质沉淀预测模型具有一定的准确性。在此基础上,预测了注气过程中沥青质沉淀变化规律:注入压力一定的情况下,沥青质沉淀量随着注入CO2量增加呈现先增加后减小的趋势,当CO2-原油体系中出现气相时,沥青质沉淀量达到最大;当CO2-原油体系中CO2物质的量分数一定时,在泡点压力附近沥青质沉淀量达到最大。

Asphaltene

Fugacity

Saturation (graph theory)

10.1016/s1876-3804(10)60038-9

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Citations (24)

Researches on calculation methods of aquifer influx for gas reservoirs with aquifer support

Journal of Petroleum Science and Engineering (2019)

Qingyan Yu Xiangyang Hu Pengcheng Liu Ying Jia Yong Li

Aquifer test

Natural gas field

Specific storage

10.1016/j.petrol.2019.03.008

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Citations (10)