Experimental study on the condensation characteristics of nitrogen with non-condensable gas

Zhu, Shaolong; Li, Yan; Zhang, Ruiping; Tang, Yuan; Qiu, Limin; Zhi, Xiaoqin

doi:10.1016/j.cryogenics.2018.12.007

Cited by 14 publications

(2 citation statements)

References 25 publications

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“…However, the influence of the gas phase composition on an oil, gas, and water three-phase composite flow has not been clarified in current relevant studies. In addition to the phase state, flue gas also has a great impact on the dryness of steam, which has attracted the attention of many scholars in recent years [37,38]. Although studies on flue gas-assisted steam development for heavy oil have been conducted for many years, most of the attention has been focused on the oil enhancement mechanism of flue gas to improve recovery, and few discussions have been conducted on the characteristics of steam seepage under the action of flue gas.…”

Section: Introductionmentioning

confidence: 99%

Study on Flow Characteristics of Flue Gas and Steam Co-Injection for Heavy Oil Recovery

Zhi-jun

et al. 2023

Processes

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Flue gas is composed of N2 and CO2, and is often used as an auxiliary agent for oil displacement, with good results and very promising development prospects for co-injection with steam to develop heavy oil. Although research on the oil displacement mechanism of flue gas has been carried out for many years, the flow characteristics of steam under the action of flue gas have rarely been discussed. In this paper, the flow resistance and heat transfer effect of flue gas/flue gas + steam were evaluated by using a one-dimensional sandpack, a flue gas-assisted steam flooding experiment was carried out using a specially customized microscopic visualization model, and the microscopic flow characteristics in the process of the co-injection of flue gas and steam were observed and analyzed. The results showed that flue gas could improve the heat transfer effect of steam whilst accelerating the flow of steam in porous media and reducing the flow resistance of steam. Compared with pure steam, when the volume ratio of flue gas and steam was 1:2, the mobility decreased by 2.8 and the outlet temperature of the sandpack increased by 35 °C. This trend intensified with an increase in the proportion of flue gas. In the microscopic oil displacement experiments, the oil recovery and sweep efficiency of the flue gas and steam co-injection stage increased by 4.7% and 32.9%, respectively, compared with the pure steam injection stage due to the effective utilization of blocky remaining oil and corner remaining oil caused by the expansion of fluid channels, the flow of flue gas foam, and the dissolution and release of flue gas in heavy oil.

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Section: Introductionmentioning

confidence: 99%

Study on Flow Characteristics of Flue Gas and Steam Co-Injection for Heavy Oil Recovery

Zhi-jun

et al. 2023

Processes

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“…Besides, the phenomenon of turbulence in pipe flow caused by boundary condition on pipe-wall and also appears confluence of two flows and the influence of flow velocity [5][6][7][8][9][10][11][12]. The pressure on the backflow flow is very high, and it will cause nitrogen gas leading to standby equipment being condensate [13][14][15][16]. In addition to the condensation of nitrogen gas, nitrogen fluid gas provides high pressure to the screw on the compressor to affect the material life of the screw compressor and also can be caused of leakage [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Compressor Piping Design Effect on Vibration Data

Suryadi

Yanuar

Gunawan

2021

ARFMTS

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One of the systems for oil and gas production supports is the nitrogen compression system. Problem found that condition of the compressor has high vibration with the maximum overall the first compressor is 9,813 mm / s RMS, the second compressor is 7,439 mm / s RMS, the third compressor is 7,430 mm / s RMS, the fourth compressor is 13.47 mm / s RMS, the fifth compressor is 13,220 mm / s RMS, and sixth compressor already damaged. This research will discuss the nitrogen compression process in terms of the characteristics of the output fluid flow from the compressor using computational fluid dynamics. The first piping system shows that the standby compressor's flow has a higher pressure reaching 10.72 - 11.82 Pa but it is still acceptable. The second piping system with two compressors in operation shows that the pipeline flows in the opposite direction with high pressure. Flow turbulence occurs, resulting in a higher speed. The highest pressure in the pipeline reaches 44.79 Pa, mostly at the fifth and sixth compressors. The conclusion from this research there is high pressure backflow when one compressor stops and another compressor start running. Prevents direct pressure to the compressor or the condensed fluid from the gas flowing and entering the compressor used valve addition.

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Visualization experiment and numerical simulation of nitrogen-neon mixture condensation

Zhu

Tang

et al. 2020

Applied Thermal Engineering

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Experimental study on the condensation characteristics of nitrogen with non-condensable gas

Cited by 14 publications

References 25 publications

Study on Flow Characteristics of Flue Gas and Steam Co-Injection for Heavy Oil Recovery

Study on Flow Characteristics of Flue Gas and Steam Co-Injection for Heavy Oil Recovery

Compressor Piping Design Effect on Vibration Data

Visualization experiment and numerical simulation of nitrogen-neon mixture condensation

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