海上油气田消除严重段塞流的节流模型研究

许路寒; 闫伊玮; 吴全红; 杜耀华; 王寒玄; 邹遂丰

doi:10.21656/1000-0887.460140

海上油气田消除严重段塞流的节流模型研究

doi: 10.21656/1000-0887.460140

许路寒^1,,
闫伊玮¹,
吴全红^{2, 3},
杜耀华¹,
王寒玄¹,
邹遂丰^1, ,

1.
西安交通大学动力工程多相流国家重点实验室, 西安 710049
2.
龙源(北京)新能源工程技术有限公司, 北京 100034
3.
国家能源风电运营技术研发(实验)中心, 西安 710309

(本刊青年编委邹遂丰来稿)

基金项目:

国家重点研发计划 2022YFC2806202

中央高校基本科研业务费 xtr042024002

详细信息

作者简介:
许路寒(2001—)，男，硕士(E-mail: xuluhan@stu.xjtu.edu.cn)

通讯作者:
邹遂丰(1990—)，男，高级工程师，博士(通信作者. E-mail: zou_suifeng@xjtu.edu.cn)

中图分类号: O359
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- 文章访问数: 101
- HTML全文浏览量: 40
- PDF下载量: 23
- 被引次数: 0
出版历程
- 收稿日期: 2025-08-01
- 修回日期: 2026-05-11
- 刊出日期: 2026-06-01

Study on the Choking Model for Elimination of Severe Slugging in Offshore Oil and Gas Fields

XU Luhan^1
,,
YAN Yiwei¹,
WU Quanhong^{2, 3},
DU Yaohua¹,
WANG Hanxuan¹,
ZOU Suifeng^{1
, ,}

1.
State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an 710049, P. R. China
2.
Longyuan(Beijing) New Energy Engineering Technology Co., Ltd., Beijing 100034, P. R. China
3.
National Energy Wind Power Operation Technology R&D Center, Xi'an 710309, P. R. China

(Contributed by ZOU Suifeng, Member of the Youth Editorial Board of AMM)

摘要

摘要: 为预测以节流方式消除海上油气立管系统严重段塞流所需的阀门开度，开展室内模型实验研究. 基于流型转变时立管顶部液塞流出时刻的瞬时单相流的特性，得出了抑制气液喷发所需的节流压降和阻力系数需满足的条件——节流阀压降峰值与瞬时单相流动相对应，在严重段塞流恰好消除时可取为均值的2倍. 进而按定义依次求出目标阻力系数和流量系数，最后按阀门出厂或实际标定的流量特性求出开度. 本预测模型避免了传统模型中两相平均参数与单相阀门特性映射不一致的问题，在150 m/DN 50与380 m/DN 80两套实验环路上的预测开度平均偏差分别为+0.55%与+1.8%；油田开度预测结果与自动控制实操偏差不超过±2%. 构建的模型既可用于指导现场人工调控，也可为自动调控的目标参数设定提供参考.
- 两相流动 /
- 严重段塞流 /
- 顶部节流 /
- 阻力系数
Abstract: Laboratory experiments were performed to establish a model for predicting the valve opening of the topside choking method for elimination of severe slugging in offshore oil and gas pipeline-riser systems. Based on the outflow characteristics of liquid slug at the riser top at the flow regime transition, which can be regarded as those of transient single-phase liquid flow, the condition for gas-liquid blowout mitigation was determined, i.e. the peak value of pressure drop across the valve shall be twice its time-average value just at the elimination moment of severe slugging, corresponding to the transient single-phase liquid flow. Then, the target resistant factor and the flow coefficient were derived successively according to the defined equations. Finally, the valve opening was worked out according to either the specification document of the valve or the calibration of the flow characteristics of the valve. The prediction model innovatively correlates the peak pressure drop across the choke valve with the physical process of instantaneous single-phase flow, resolving the inconsistency of mapping averaged 2-phase parameters to single-phase valve characteristics in conventional models. The average deviation of prediction for 2 experimental loops (150-m/DN 50 and 380-m/DN 80) is +0.55% and +1.8%, respectively, for experimental data from 2 experimental pipelines; while the deviation from automatic control result is smaller than ±2% in a field case. The established model can guide manual operations and serve as a setpoint for automatic control systems in offshore fields.
- 2-phase flow /
- severe slugging /
- topside choking /
- resistant factor
edited-by

edited-by
注释:

1) (本刊青年编委邹遂丰来稿)

HTML全文

图 1 150 m多相流实验环路系统示意图

Figure 1. The sketch of the 150 m multiphase flow loop in laboratory

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图 2 380 m多相流实验环路系统示意图

Figure 2. The sketch of the 380 m multiphase flow loop in laboratory

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图 3 节流阀流量特性曲线

Figure 3. Flow characteristics of choke valves

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图 4 实验工况点

Figure 4. Experimental operating points

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图 5 150 m实验环路部分气压、压差信号随节流阀开度关小的变化情况(u_SL=0.25 m/s，u_SG0=0.25 m/s)

Figure 5. The trend plot of pressure and differential pressure signals with the decrease of the valve opening (150 m loop, u_SL=0.25 m/s, u_SG0=0.25 m/s)

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图 6 图 5在t=5 200~5 600 s区间的节流阀压差局部放大图

Figure 6. The enlarged trend plot of Δp_v(t=5 200~5 600 s)

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图 7 实验临界开度与预测临界开度比较

Figure 7. Predicted optimal openings vs. the reference value obtained by manual traversing

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图 8 380 m实验环路部分气压、压差信号随节流阀开度关小的变化情况

(u_SL=0.25 m/s，u_SG0=0.25 m/s，p_s=0.1 MPa)

Figure 8. The trend plot of pressure and differential pressure signals with the decrease of the valve opening

(380 m loop, u_SL=0.25 m/s, u_SG0=0.25 m/s)

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图 9 图 8在t=600~1 500 s区间的节流阀压差局部放大图

Figure 9. The enlarged trend plot of Δp_v in fig. 8 (t=600~1 500 s)

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表 1 实验环路主要参数

Table 1. Main parameters of flow loops in laboratory

parameter	150 m loop	380 m loop
inner diameter	50 mm	75 mm (46 mm for downcomer pipeline)
horizontal pipe section length	114 m	314 m
downward inclined pipe section length	20.4 m	25 m
inclination angle	-5°	-5°
vertical riser height	16.3 m	21.5 m
downward vertical pipe height	N/A	19 m
air flow rate (0 ℃，101.325 kPa)	0~360 m³/h	0~420 m³/h (single air compressor)
water flow rate	0~30 m³/h	0~14 m³/h (single water pump)
gas-liquid separator rated pressure	1.6 MPa	32 MPa

下载: 导出CSV

表 2 150 m实验环路验证结果

Table 2. Validation results for 150 m loop

case number	u_SL/(m/s)	u_SG0/(m/s)	experimental valve opening/%	predicted valve opening (Fu et al.^[24])/%	predicted valve opening (this work)/%	absolute deviation/%
1	0.10	0.10	16.67	16.32	17.98	1.31
2	0.10	0.25	17.83	16.09	17.81	-0.02
3	0.10	0.45	17.78	16.40	18.19	0.41
4	0.10	0.60	16.54	16.69	18.60	1.66
5	0.10	1.00	16.98	17.42	19.70	2.72
6	0.25	0.10	22.83	23.67	23.83	1.00
7	0.25	0.25	22.70	22.27	22.58	-0.13
8	0.25	0.45	22.69	21.94	22.21	-0.48
9	0.25	0.60	22.76	21.95	22.26	-0.50
10	0.25	1.00	21.86	22.25	22.75	0.89
11	0.45	0.10	26.79	30.66	29.54	2.75
12	0.45	0.25	25.66	28.13	27.25	1.59
13	0.45	0.45	26.88	27.18	26.35	-0.53
14	0.45	0.60	26.52	26.92	26.10	-0.42
15	0.45	1.00	26.77	26.77	26.08	-0.70
16	0.60	0.10	29.90	34.81	33.18	3.28
17	0.60	0.25	29.69	31.73	30.19	0.50
18	0.60	0.45	28.76	30.41	28.97	0.21
19	0.60	0.60	29.66	29.97	28.55	-1.11
20	0.60	1.00	29.67	29.55	28.24	-1.43

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表 3 380 m实验环路验证结果

Table 3. Validation results for the 380 m loop

case number	u_SL/(m/s)	u_SG0/(m/s)	p_s/MPa	experimental valve opening/%	predicted valve opening (Fu et al.^[24])/%	predicted valve opening (this work)/%	absolute deviation/%
1	0.08	0.5	0.1	50	48	53	3
2	0.08	2.5	0.1	64	55	63	-1
3	0.08	6.0	0.1	78	61	82	4
4	0.10	6.0	0.1	80	63	83	3
5	0.20	0.5	0.1	61	60	61	0
6	0.20	1.5	0.1	64	62	64	0
7	0.20	8.0	0.1	100	79	100	0
8	0.45	0.2	0.1	85	100	90	5
9	0.45	5.0	0.1	100	100	100	0
10	0.13	0.5	1.0	57	56	60	3
11	0.13	1.1	1.0	54	53	60	6
12	0.15	4.0	1.0	63	56	67	4
13	0.25	0.4	1.0	75	76	76	1
14	0.25	0.9	1.0	70	67	72	-2
15	0.25	3.0	1.0	68	64	72	4
16	0.19	2.0	1.3	67	59	65	-2
17	0.30	5.0	1.3	76	68	81	5

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