特高含水期原油低温集输温度边界确定方法

doi:10.16085/j.issn.1000-6613.2023-1643

化工进展 ›› 2024, Vol. 43 ›› Issue (10): 5475-5485.DOI: 10.16085/j.issn.1000-6613.2023-1643

• 能源加工与技术 • 上一篇

特高含水期原油低温集输温度边界确定方法

秦远智¹(), 张瀚文², 尹然³, 熊建华⁴, 黄启玉¹()

^1.中国石油大学(北京)机械与储运工程学院，油气管道输送安全国家工程实验室，城市油气输配技术北京市重点实验室，北京 102249
^2.国家石油天然气管网集团有限公司科学技术研究总院分公司，河北廊坊 065000
^3.长庆工程设计有限公司，陕西西安 710018
^4.中国石油化工股份有限公司江苏油田分公司，江苏扬州 225009

收稿日期:2023-09-18 修回日期:2023-12-27 出版日期:2024-10-15 发布日期:2024-10-29
通讯作者: 黄启玉
作者简介:秦远智（1999—），男，博士研究生，研究方向为特高含水原油低温集输黏壁特性。E-mail：2829482124@qq.com。
基金资助:
国家自然科学基金重点项目(51534007);国家自然科学基金面上项目(51374224)

Method for determining temperature boundary of low temperature gathering and transportation of crude oil in extra-high water cut period

QIN Yuanzhi¹(), ZHANG Hanwen², YIN Ran³, XIONG Jianhua⁴, HUANG Qiyu¹()

^1.College of Mechanical and Storage Engineering, National Engineering Laboratory of Oil and Gas Pipeline Transportation Safety, Beijing Key Laboratory of Oil and Gas Transmission and Distribution Technology, China University of Petroleum (Beijing), Beijing 102249, China
^2.Research Institute of Science and Technology of Pipe China, Langfang 065000, Hebei, China
^3.Changqing Engineering Design Company Limited, Xi’an 710018, Shaanxi, China
^4.Jiangsu Oil Field Bureau, China Petroleum and Chemical Corporation, Yangzhou 225009, Jiangsu, China

Received:2023-09-18 Revised:2023-12-27 Online:2024-10-15 Published:2024-10-29
Contact: HUANG Qiyu

摘要/Abstract

摘要：

随着国内油田逐渐进入开采后期，本文提出黏壁温度作为综合含水率70%~90%的高含水低温集油的评价指标已进入推广阶段且效果显著，但在现场降温试验中发现含水率90%以上的特高含水期原油管线实际运行温度与黏壁温度预测结果之间存在一定误差。因此，针对特高含水期原油开展低温集输温度边界条件研究，对完善油田低温集输技术具有重要意义。利用环道实验装置进行了特高含水期原油黏壁凝油冲刷实验，对特高含水期原油油水两相流动特性和油相黏壁特性进行分析，确定了屈服应力是阻碍黏壁凝油在管道内被冲刷剥离最主要的影响因素。编制了特高含水期原油低温集油温度预测软件，利用油田单井集油管线的现场降温试验进行了验证，误差在2℃范围内，满足工程运用需求。

关键词: 特高含水期原油, 黏壁凝油, 低温集输, 温度边界条件, 冲刷应力

Abstract:

As domestic oil fields gradually enter the late stage of exploitation, viscous wall temperature as the evaluation index of high water and low temperature collection with a comprehensive water content of 70%—90% has entered the promotion stage and the effect is remarkable. However, in the field cooling test, it is found that there is a certain error between the actual operating temperature of ultra-high water cut crude oil pipelines with water content of more than 90% and the prediction results of viscous wall temperature. Therefore, it is of great significance to study the temperature boundary conditions of low temperature gathering and transportation for extra-high water cut crude oil. In this paper, the characteristics of oil-water two-phase flow and oil-phase wall adhesion in the extra-high water cut period are analyzed. It is determined that the yield stress is the most important factor that prevents the viscous wall oil from being washed away in the pipeline. The prediction software of low temperature collection temperature for extra-high water cut crude oil is developed and verified by the field cooling test of single well collection pipeline. The error is within 2℃, which meets the engineering application requirement.

Key words: extra-high water cut crude oil, sticky wall condensate, low temperature gathering and transportation, temperature boundary condition, erosion stress

中图分类号:

TE832

秦远智, 张瀚文, 尹然, 熊建华, 黄启玉. 特高含水期原油低温集输温度边界确定方法[J]. 化工进展, 2024, 43(10): 5475-5485.

QIN Yuanzhi, ZHANG Hanwen, YIN Ran, XIONG Jianhua, HUANG Qiyu. Method for determining temperature boundary of low temperature gathering and transportation of crude oil in extra-high water cut period[J]. Chemical Industry and Engineering Progress, 2024, 43(10): 5475-5485.

图/表 20

参考文献 28

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原油油样	凝点/°C	50°C油样密度/kg·m^-3	析蜡点/°C	析蜡高峰/°C	含蜡量（质量分数）/%
1^#原油	36	842.0	54.32	28.71	26.23
2^#原油	35	841.0	53.62	19.98	23.26
3^#原油	38	858.5	56.34	29.64	24.06
4^#原油	32	833.0	51.37	17.67	13.77
5^#原油	29	830.0	51.37	17.98	17.05
6^#原油	34	850.4	38.20	19.26	21.99

原油油样	凝点/°C	50°C油样密度/kg·m^-3	析蜡点/°C	析蜡高峰/°C	含蜡量（质量分数）/%
1^#原油	36	842.0	54.32	28.71	26.23
2^#原油	35	841.0	53.62	19.98	23.26
3^#原油	38	858.5	56.34	29.64	24.06
4^#原油	32	833.0	51.37	17.67	13.77
5^#原油	29	830.0	51.37	17.98	17.05
6^#原油	34	850.4	38.20	19.26	21.99

参数	参数值
a	13.522
b	-0.341
c	0.276

参数	参数值
a	13.522
b	-0.341
c	0.276

影响因素	相关性
影响因素	1	2	3	4	5
凝点
皮尔逊相关性	1
显著性（双尾）
含蜡量
皮尔逊相关性	0.793^**	1
显著性（双尾）	<0.001
密度
皮尔逊相关性	0.886^**	0.723^**	1
显著性（双尾）	<0.001	<0.001
流速
皮尔逊相关性	0.027	-0.063	0.008	1
显著性（双尾）	0.884	0.730	0.966
最低安全集输温度
皮尔逊相关性	0.701^**	0.612^**	0.578^**	-0.623^**	1
显著性（双尾）	<0.001	<0.001	<0.001	<0.001

特高含水期原油低温集输温度边界确定方法

Method for determining temperature boundary of low temperature gathering and transportation of crude oil in extra-high water cut period

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图/表 20

参考文献 28

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Metrics

本文评价

参数	X4-21-619	X4-2-F17
凝点/℃	30	30
含蜡量/%	25.32	25.32
相对密度（20℃）	0.852	0.852
油井含水率/%	95.5	96.1
管道外径/mm	60	60
管道壁厚/mm	3.5	3.5
日产液量/m³·d^-1	43.8	47.2
进间温度/℃	34	37
井口回压/MPa	0.57	0.4
掺水温度/℃	48	44

结果	最低安全集输温度计算值/℃
X4-21-619	22
X4-2-F17	20

结果	最低安全集输温度计算值/℃
X4-21-619	22
X4-2-F17	20