| 施建国.海洋天然气水合物分解抑制实验[J].地质与勘探,2010,46(2): |
| 海洋天然气水合物分解抑制实验 |
| Experimental Study on Inhibition to Marine Gas Hydrate Decomposing |
| 投稿时间：2009-11-10 修订日期：2010-03-10 |
| DOI： |
| 中文关键词: 海洋含天然气水合物地层 钻井液 分解抑制 |
| 英文关键词: Marine,摇hydrate鄄bearing formation,摇drilling fluid,摇decomposing inhibition |
| 基金项目:国家“863 计划冶专题课题(编号:2006AA09Z316) |
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| 中文摘要: |
| [摘要]在海洋含天然气水合物地层中钻进时,水合物的分解会导致井壁不稳定、钻井液性能降
低和管道内生成水合物塞等一系列问题,对安全钻井作业造成了很大风险。采取适合于海洋天然气水
合物地层钻井的钻井液,最大限度控制水合物的分解是解决天然气水合物安全钻井的关键。本文采用
了课题组研制的一套天然气水合物钻井模拟实验系统,利用此实验系统在不同温度压力条件下人工合
成水合物样品,然后加入配置的一种稀硅酸盐钻井液,考察了水合物样品在不同分解条件下( 加热、降
压)的分解情况进行了对比和分析研究,结果表明此钻井液配方具有良好的抑制水合物分解的能力,能
够应用于海洋水合物地层钻井。 |
| 英文摘要: |
| Abstract:When drilling in marine hydrae鄄bearing formation, the decomposition of hydrate will lead to a series of problems, including instability of
wellbore wall, degradation of drilling fluid performance, and hydrate blockage within pipeline. These problems bring great risks to safety of drilling opera鄄
tion. As a result, the application of properly designed drilling fluid which can minimize gas hydrate dissociation is crucial for the drilling in this type of for鄄
mation. In this work, a set of gas hydrate stimulating experiment system was used to synthesize several kinds of gas hydrate samples in laboratory, and thin
silicate drilling fluid was added to the system. The behavior of gas hydrate samples decomposing under different conditions (heating, depressurization)
was studied. The results show that the drilling fluid can effectively inhibit gas hydrate decomposition and can be applied to drilling in oceanic gas hydrate
formation. |
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