海域可燃冰开采集输工艺探讨
Exploring the gathering and transmission process of offshore gas hydrate exploitation
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- 引用格式:
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陈俊文,赵兴元,王洪超,武世传,郭艳林,杨凯然,曹学文,边江.海域可燃冰开采集输工艺探讨[J].天然气与石油,2023,41(1):8-14.doi:10.3969/j.issn.1006-5539.2023.01.002
CHEN Junwen, ZHAO Xingyuan, WANG Hongchao, WU Shichuan, GUO Yanlin, YANG Kairan, CAO Xuewen, BIAN Jiang.Exploring the gathering and transmission process of offshore gas hydrate exploitation[J].Natural Gas and Oil,2023,41(1):8-14.doi:10.3969/j.issn.1006-5539.2023.01.002
- DOI:
- 10.3969/j.issn.1006-5539.2023.01.002
- 作者:
- 陈俊文1 赵兴元1 王洪超2 武世传2 郭艳林1 杨凯然2 曹学文2 边江2
CHEN Junwen1, ZHAO Xingyuan1, WANG Hongchao2, WU Shichuan2, GUO Yanlin1, YANG Kairan2, CAO Xuewen2, BIAN Jiang2
- 作者单位:
- 1. 中国石油工程建设有限公司西南分公司, 四川 成都 610041; 2. 中国石油大学(华东)储运与建筑工程学院, 山东 青岛 266580
1. CPECC Southwest Company, Chengdu, Sichuan, 610041, China; 2. College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao, Shandong, 266580, China
- 关键词:
- 可燃冰;试采;集输模式;工艺流程;安全性
Natural gas hydrate; Trial production; Gathering and transmission scheme; Process flow; Safety
- 摘要:
可燃冰是世界公认的清洁高效能源之一。中国南海神狐海域2次可燃冰试采显示，该海域可燃冰矿藏呈现游离气和水合物共存的特征,且多分布在泥质粉砂黏土中;采出流体特性具有CH4含量高、产砂及出水量大的特点。针对南海神狐海域可燃冰特点,提出了水下气液分离的预处理方案,对比分析了水下气液分离+砂液回注、气液分输+平台砂液处理、气液混输+平台砂液处理3种集输方案的优缺点。针对水下气液分离+砂液回注方案,探讨了总工艺流程、水下分离工艺和平台工艺流程,论述了方案的可行性。进一步考虑了工艺流程中存在的出砂、水合物二次生成问题,为可燃冰输送过程安全高效运行提供支撑。研究思路和方案设计对中国南海可燃冰矿藏的开发具有一定的参考意义。
Gas hydrate is recognized as one of the clean and efficient energy sources in the world. According to the results of two trial mining of gas hydrate in the Shenhu area of the South China Sea, the gas hydrate deposits in this area show the coexistence of free gas and hydrate, and are mostly distributed in the argillaceous silty clay. The produced fluid is characterized by high methane content, sand and high water production. On this basis, this research puts forward the pre-treatment scheme of underwater gas-liquid separation, and compares and analyzes the advantages and disadvantages of three gathering and transmission modes:underwater gas-liquid separation and sand-liquid reinjection, separate gas-liquid transmission and sand-liquid treatment on platform, and mixed phase gas-liquid transmission and sand-liquid treatment on platform. Focusing on the gathering and transmission scheme of underwater gas-liquid separation and sand-liquid reinjection, the underwater gathering and transmission process of natural gas, underwater gas-liquid separation process and platform treatment process are explored, thus proving the feasibility of the scheme. In the design process, the issue of sand production and secondary hydrate generation in the process were considered to provide support for the safe and efficient operation of the gas hydrate transmission process. The ideas and schematic design of this paper provide guiding significance for the development of natural gas hydrate deposits in the South China Sea.
