西南石油大学学报(自然科学版) ›› 2005, Vol. 27 ›› Issue (6): 62-64.DOI: 10.3863/j.issn.1000-2634.2005.06.17

• 油气化学工程与化工 • 上一篇    下一篇

钻井液处理剂对气体水合物形成的影响研究

李 巍a,黄进军b,刘远翔b, 罗兴树b,李春霞b   

  1. 西南石油学院: a.西南石油学院研究生院, b.石油工程学院,四川 成都 610500
  • 收稿日期:2004-03-24 修回日期:1900-01-01 出版日期:2005-12-20 发布日期:2005-12-20
  • 通讯作者: 李 巍

XTHE INFLUENCE OF DRILLING FLUID ADDITIVES ON THE FORMATION OF GAS HYDRATE

LI Weia, HUANG Jinjunb, LIU Yuanxiangb,et al .   

  1. Southwest Petroleum Institute, Chengdu Sichuan 610500, China
  • Received:2004-03-24 Revised:1900-01-01 Online:2005-12-20 Published:2005-12-20
  • Contact: LI Wei

摘要: 海洋深水钻井过程中如钻遇浅层含气砂岩,气体进入钻井液,在海底低温和高压作用下易形成气体水合物,并堵塞井筒、环空或防喷器, 严重影响钻井工程。利用自制四氢呋喃旋转试管测试平台,实验研究了海洋钻井常用的钻井液处理剂(无机盐、有机盐、高分子聚合物)对气体水合物形成的影响。结果表明:无机盐、有机盐能很好地抑制水合物的形成,而聚合物在高浓度时才会有较好的抑制效果,低浓度时则会促进水合物形成。

关键词: 深水钻井, 钻井液处理剂, 气体水合物, 四氢呋喃测试法

Abstract:

Gas hydrate will be formed in the course of drilling shallow layer gas sand at offshore deepwater. In case of natural gas hydrate formed in drilling fluid, it would block the well bore, annular and blowout preventer (BOP), and endanger drilling operation seriously. With the selfdeveloped tetrahydrofuran (THF) circumvolved curette testing flat, the influence of the common offshore drilling additives on the formation of gas hydrate, including inorganic salt, organic salt and macromolecule polymer has been studied. Results show that inorganic salt and organic salt can efficiently inhibit the formation of natural gas hydrate, and macromolecule polymer is effective only in high concentration. When the concentration of macromolecule polymer is low, it would accelerate the formation of natural gas hydrate.

Key words: deepwater drilling, drilling fluid additive, gas hydrate, THF testing 

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