深水气田水下回接系统流动安全运行及管理策略
Flow assurance and management strategies for operation of deepwater gas field subsea tieback system
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- 引用格式:
-
程兵,秦蕊,李清平,姚海元.深水气田水下回接系统流动安全运行及管理策略[J].天然气与石油,2021,39(6):50-56.doi:10.3969/j.issn.1006-5539.2021.06.009
CHENG Bing, QIN Rui, LI Qingping, YAO Haiyuan.Flow assurance and management strategies for operation of deepwater gas field subsea tieback system[J].Natural Gas and Oil,2021,39(6):50-56.doi:10.3969/j.issn.1006-5539.2021.06.009
- DOI:
- 10.3969/j.issn.1006-5539.2021.06.009
- 作者:
- 程兵1,2 秦蕊1,2 李清平1,2 姚海元1,2
CHENG Bing1,2, QIN Rui1,2, LI Qingping1,2, YAO Haiyuan1,2
- 作者单位:
- 1. 中海油研究总院有限责任公司, 北京 100028; 2. 天然气水合物国家重点实验室, 北京 100028
1. CNOOC Research Institute Ltd., Beijing, 100028, China; 2. State Key Laboratory of Natural Gas Hydrates, Beijing, 100028, China
- 关键词:
- 深水;水下回接;流动安全;海底管道;运行策略
Deepwater; Subsea tieback; Flow assurance; Subsea pipeline; Operation strategy
- 摘要:
随着海洋石油工业的发展,水下生产系统的应用日趋广泛,回接深度逐渐加深,回接距离逐渐增长,水合物生成、段塞流、出砂、冲蚀、顶部腐蚀等诸多流动安全问题也逐渐凸显出来。对于深水气田水下回接系统,在生产运行阶段,应结合实际需要进行流动安全运行策略的选择和优化。结合荔湾3-1等深水气田的基础数据和典型工况,对深水气田水下回接系统在生产中可能遇到的流动安全风险和问题进行分析。从确定操作窗口、做好水合物生成风险控制、合理控制输量变化、灵活利用水下回接方式、充分借鉴气田流动管理系统等角度,提出了流动安全运行及管理策略,以及优化生产的具体建议。研究结果可为荔湾3-1等类似深水气田水下回接系统的安全高效生产提供参考。
Subsea production system is becoming more and more widely used in the developing offshore oil and gas industry, with increasing tieback water depth and distance. Deeper water and longer distance has brought significant flow assurance problems, such as hydrate formation, slugging, sand production, erosion, corrosion, etc. Therefore, it is important to select and optimize proper flow assurance strategies at production stage, according to the actual needs of production operations. This paper analyzed potential flow assurance risks of deepwater subsea tieback system, based on basic data and typical working conditions of deepwater gas fields such as LW 3-1. This paper put forward flow assurance operations and management strategies from the perspectives of determining operating envelop, hydrate formation risk control, control of rate of change in flowrate, subsea tieback mode switch, as well as maximising application of flow management system. To the end, several specific suggestions are made to optimize production operations. This research results can provide references for safe and efficient production of subsea tieback system in similar deepwater gas fields such as LW 3-1.
