不同含油饱和度对火驱效果影响实验研究

doi:10.13809/j.cnki.cn32-1825/te.2021.03.024

Abstract

Abstract:

In view of the unclear influence of different oil saturation on the process and effect of fire flooding, the feasibility of fire flooding under different oil saturation was explored by using one-dimensional physical model device of fire flooding, and the experimental study on the influence of different oil saturation on gas injection adjustment and production effect of fire flooding was carried out. The experimental results show that the high temperature combustion can be realized when the oil saturation is above 15 %, but at this time, all the crude oil is converted into fuel for combustion. In the process of fire flooding, the greater the oil saturation is, the greater the oil wall is, and the greater the migration resistance is. It is necessary to continuously improve the gas injection speed to increase the driving force, resulting in the increase of model pressure with the increase of gas injection speed. With the increase of oil saturation, the displacement efficiency increases and the gas oil ratio decreases, indicating that the better the production effect is.

Key words: oil saturation, fire flooding, gas injection rate, pressure, displacement efficiency

CLC Number:

TE357

WANG Weiwei. Influence of different oil saturation on fire flooding[J].Petroleum Reservoir Evaluation and Development, 2021, 11(3): 465-468.

Figures/Tables 5

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References 20

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含油饱和度（%）	尾气组分含量（%）				评价指标
含油饱和度（%）	O₂	CO	CO₂	N₂	视HC比	O₂利用率（%）	O₂转化率（%）
15	2.03	1.24	13.19	81.02	1.75	90.57	70.80
20	1.86	1.15	14.13	82.25	1.41	91.50	73.50
30	1.57	1.01	13.54	82.68	1.82	92.88	68.81
60	1.59	0.64	14.36	82.52	1.56	92.75	72.13

含油饱和度（%）	驱油效率（%）	空气油比（m³/t）
15	<2
20	20.87	25 018
30	46.97	7 429
60	74.47	2 371

Influence of different oil saturation on fire flooding

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