| 天然气水合物保真取心装置内部密封技术分析 |
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| 引用本文： | 张凌,蒋国盛,宁伏龙,涂运中,吴翔,窦斌.天然气水合物保真取心装置内部密封技术分析[J].现代地质,2009,23(6). |
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| 作者姓名： | 张凌 蒋国盛 宁伏龙 涂运中 吴翔 窦斌 |
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| 作者单位： | 1. 中国地质大学,岩土钻掘与防护教育部工程研究中心,湖北,武汉,430074
2. 中国地质大学,研究生院,湖北,武汉,430074 |
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| 基金项目： | 国家自然科学基金项目，教育部"新世纪优秀人才支持计划"资助项目，中国地质大学(武汉)优秀青年教师资助计划项目"天然气水合物地层岩心后处理技术预研究" |
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| 摘 要： | 在海底天然气水合物地层钻探中,利用压力岩心取样器(PCS)获取保压岩心对于后续相关的处理和分析非常重要。首先回顾了国内保压保温取心器相关研究现状,然后从PCS取样腔内部球阀和O型圈等密封结构的特点分析了其内部上、下两部分的密封技术。在综合分析国内两种取样器密封结构特点的基础上,结合岩心现场处理与分析的特点,对PCS与上述两种取样器的密封技术进行了探讨,为取样器的密封设计、岩心现场压力和温度的保持以及保压岩心的保真转移提出了几点建议。
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| 关 键 词： | 天然气水合物 压力岩心取样器 密封 球阀 O型圈 |
Analysis on Internal Sealing Technologies of Hydrate Pressure-Temperature Core Samplers |
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| ZHANG Ling,JIANG Guo-sheng,NING Fu-long,TU Yun-zhong,WU Xiang,DOU Bin.Analysis on Internal Sealing Technologies of Hydrate Pressure-Temperature Core Samplers[J].Geoscience——Journal of Graduate School,China University of Geosciences,2009,23(6). |
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| Authors: | ZHANG Ling JIANG Guo-sheng NING Fu-long TU Yun-zhong WU Xiang DOU Bin |
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| Abstract: | While drilling in the gas hydrate bearing formation under the seabed, it is very important to use the pressure core sampler(PCS) tool to obtain pressure cores for the further core handling and analyzing. The current domestic state of the art with respect to pressure-temperature core samplers is firstly reviewed in this article. Internal sealing technologies of PCS are analyzed from the upper and lower seals of the sample chamber, which include some seals, such as the ball valve and O-rings. The sealing characteristics of two domestic samplers are analyzed. Based on the above analysis, with the features of core in-situ handling and analyzing, the sealing technologies of PCS and two domestic samplers have been discussed. At last, some suggestions are brought out for designing the seals of sampler, maintaining the in-situ pressure and temperature, and transferring the pressure core. |
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| Keywords: | gas hydrate pressure core sampler seal ball valve O-ring |
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