特种油气藏 ›› 2023, Vol. 30 ›› Issue (3): 73-80.DOI: 10.3969/j.issn.1006-6535.2023.03.009

• 油藏工程 • 上一篇    下一篇

全可视化双反应釜内甲烷水合物生成与分解特征研究

毛港涛1,2, 李治平2, 王凯1, 丁垚3   

  1. 1.北京石油化工学院深水油气管线关键技术与装备北京市重点实验室,北京 102617;
    2.中国地质大学(北京),北京 100083;
    3.中国石化石油勘探开发研究院,北京 102206
  • 收稿日期:2022-04-26 修回日期:2023-02-20 出版日期:2023-06-25 发布日期:2023-07-13
  • 通讯作者: 王凯(1982—),男,副教授,2004年毕业于西南石油学院油气储运工程专业,2009年毕业于中国石油大学(北京)油气储运工程专业,获博士学位,研究方向为油气流动与传热智慧管理、气体水合物、新能源油气融合。
  • 作者简介:毛港涛(1997—),男,2018年毕业于中国地质大学(北京)石油工程专业,现为该校石油与天然气工程专业在读博士研究生,研究方向为油气田开发技术及水合物开发。
  • 基金资助:
    北京市自然科学基金面上项目“油水交替输送系统中交变流场与温度场对蜡沉积的双重抑制机理及其调控机制”(3222029)

Study on the Generation and Decomposition Characteristics of Methane Hydrate in Fully Visible Dual Reactor

Mao Gangtao1,2, Li Zhiping2, Wang Kai1, Ding Yao3   

  1. 1. Beijing Institute of Petrochemical Technology-Beijing Key Laboratory of Key Technologies and Equipment for Deepwater Oil and Gas Pipelines, Beijing 102617, China;
    2. China University of Geosciences (Beijing), Beijing 100083, China;
    3. Sinopec Petroleum Exploration and Production Research Institute, Beijing 102206, China
  • Received:2022-04-26 Revised:2023-02-20 Online:2023-06-25 Published:2023-07-13

摘要: 为明确甲烷水合物生成分解特征及其影响因素,设计并搭建了高压全透明双反应釜实验平台,以高纯度甲烷和去离子水作为研究对象,有无搅拌作为对比,进行甲烷水合物初次和二次生成分解实验。结果表明:水合物的生成可分为诱导、快速生成、缓慢生成、稳定4个阶段;搅拌对水合物的生成有较好的促进作用,在400 r/min的转速下,下釜比上釜多消耗甲烷量93.6%;同时,记忆效应更加明显,二次生成比初次生成诱导时间缩短了62.5%,消耗甲烷量增加了254.0%。该研究可为水合物的开发起到一定的指导作用。

关键词: 甲烷水合物, 生成, 分解, 影响因素, 搅拌, 记忆效应, 诱导时间

Abstract: In order to clarify the generation and decomposition characteristics of methane hydrate and its influencing factors, a high-pressure fully transparent double-reactor test platform was designed and built to conduct initial and secondary generation and decomposition tests of methane hydrate with high-purity methane and deionized water as the study objects. During the tests, the samples were stirred or not stirred to make a comparison. The experimental results showed that the hydrate generation included four stages: induction, rapid generation, slow generation and stabilization. Stirring could promote the hydrate generation. At the speed of 400 r/min, the lower reactor consumed 93.6% more methane than the upper reactor. Meanwhile, the memory effect was more obvious, and the induction time in the secondary generation was shortened by 62.5 %, and the methane consumption was increased by 254.0% compared with the primary generation. There is much for reference of the study for the development of hydrate.

Key words: methane hydrate, generation, decomposition, influencing factors, stirring, memory effect, induction time

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