Evaluation of Reservoir Damage by Hydrothermal Fluid from Clay Metamorphism, Particle Migration, and Heavy-Component Deposition in Offshore Heavy Oilfields DOI Open Access

Zuhao Zheng,

Lu Zhang,

Hongchao Yin

et al.

Processes, Journal Year: 2024, Volume and Issue: 12(9), P. 1959 - 1959

Published: Sept. 12, 2024

Marine heavy-oil reserves are enormous, and thermal recovery technology is one of the most effective ways to utilize them. However, steam as a high-energy external fluid will affect geological characteristics reservoir. In this paper, sensitivity reservoir was analyzed in terms high-temperature metamorphic clay minerals coupling damage particle migration heavy component deposition. Firstly, long-core cyclic stimulation experiments were conducted using supersaturated steam, saturated superheated quantify differences oil capabilities. Subsequently, variation components core under different temperatures by X-ray diffraction spectroscopy. Finally, influence heavy-component deposition on permeability clarified through displacement experiments. The results show that more than 12% higher throughput cycle effectively shortened. laboratory, only metamorphism due effective, mainly concentrated kaolinite monazite. Particle causes little reservoir, but formation coupled with can lead 30% becoming damaged.

Language: Английский

Evaluation of Reservoir Damage by Hydrothermal Fluid from Clay Metamorphism, Particle Migration, and Heavy-Component Deposition in Offshore Heavy Oilfields DOI Open Access

Zuhao Zheng,

Lu Zhang,

Hongchao Yin

et al.

Processes, Journal Year: 2024, Volume and Issue: 12(9), P. 1959 - 1959

Published: Sept. 12, 2024

Marine heavy-oil reserves are enormous, and thermal recovery technology is one of the most effective ways to utilize them. However, steam as a high-energy external fluid will affect geological characteristics reservoir. In this paper, sensitivity reservoir was analyzed in terms high-temperature metamorphic clay minerals coupling damage particle migration heavy component deposition. Firstly, long-core cyclic stimulation experiments were conducted using supersaturated steam, saturated superheated quantify differences oil capabilities. Subsequently, variation components core under different temperatures by X-ray diffraction spectroscopy. Finally, influence heavy-component deposition on permeability clarified through displacement experiments. The results show that more than 12% higher throughput cycle effectively shortened. laboratory, only metamorphism due effective, mainly concentrated kaolinite monazite. Particle causes little reservoir, but formation coupled with can lead 30% becoming damaged.

Language: Английский

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