红山稠油油藏蒸汽吞吐CO产出规律物理模拟研究

doi:10.13809/j.cnki.cn32-1825/te.2020.05.015

Abstract

Abstract:

In order to solve the problem of excess production of carbon monoxide in cyclic steam stimulation process of Hongshan oilfield, the corresponding laboratory researches have been carried out. Through physical simulation experiments and multi-parameter sensitivity analysis, the effect of technological parameters such as steam temperature, steam injection volume, and soaking time on carbon monoxide output concentration have been investigated. Furthermore, the possible solutions for carbon monoxide production have been proposed based on the effects of different factors. The results show that the influencing order of the three dominant factors is steam temperature, steam injection volume and soaking time. Reducing the steam temperature can effectively reduce the carbon monoxide output concentration, but when the steam temperature drops below 220 ℃, the crude oil production will be adversely affected. Therefore, for the wells in Hongshan oilfield with relative low carbon monoxide exceeding degree, it is recommended to reduce the steam temperature to 220 ℃ to keep the carbon monoxide concentrations below safe levels; for those ones with relative high exceeding degree, in addition to the above measures, the steam injection volume should be increased to ensure that the periodic oil production does not decrease significantly.

Key words: cyclic steam stimulation, heavy oil, carbon monoxide, physical analogue, dominant factor

CLC Number:

TE991

YANG Shengzhen,LIU Dongdong,PU Wanfen,ZHU Qiubo,YANG Yang. Physical simulation of output rule for carbon monoxide in cyclic steam stimulation process of Hongshan heavy oil reservoir[J].Reservoir Evaluation and Development, 2020, 10(5): 103-107.

Figures/Tables 7

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References 16

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因素水平	参数
因素水平	蒸汽温度/℃	焖井时间/d	注汽量/g
-1	150	1	20
0	210	3	40
1	270	5	60

序号	蒸汽温度	焖井时间	注汽量	CO生成量/（mg·m^-3）
1	1	1	0	35.5
2	-1	0	-1	19.1
3	1	0	1	46.2
4	-1	1	0	13.6
5	1	0	-1	35.2
6	0	-1	1	32.1
7	0	0	0	33.6
8	-1	0	1	25.6
9	-1	-1	0	8.0
10	0	1	-1	24.9
11	0	1	1	17.2
12	1	-1	0	32.4
13	0	-1	-1	13.9

模型类型	模型响应项目	P值	决定系数R²
线性模型	CO生成量/ （mg·m^-3）	0.02	0.539 6
二因素交互模型		0.44	0.546 6
二次方模型		0.03	0.897 9

Physical simulation of output rule for carbon monoxide in cyclic steam stimulation process of Hongshan heavy oil reservoir

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