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Back“梦想”号大洋钻探船成功钻获南海深海洋盆玄武岩样品
“梦想”号大洋钻探船成功钻获南海深海洋盆玄武岩样品
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中国新闻网13 hours agoScience3 min readChinaView translation

“梦想”号大洋钻探船成功钻获南海深海洋盆玄武岩样品

Quick Look

中国自然资源部中国地质调查局宣布,“梦想”号大洋钻探船在南海4100米水深海域完成两口井钻探,成功钻获深海洋盆玄武岩样品,刷新中国自主实施最大作业水深钻探纪录,使中国成为全球第三个利用钻探船钻获深海洋盆硬岩样品的国家,并构建起与国际大洋钻探同等水准的取心作业体系。

AI-generated summary

Why It Matters

中国长期致力于深海科技发展,此前在深海油气勘探、海底矿产资源调查等方面取得进展,但深海硬岩钻探技术仍受限于国外装备和经验。‘梦想”号的成功标志着中国在超深水科学钻探领域实现自主突破。

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中新社北京9月28日电 (记者 庞无忌)记者28日从中国自然资源部中国地质调查局获悉,近日,“梦想”号大洋钻探船成功钻获深海洋盆玄武岩样品。

“梦想”号近日完成南海大洋钻探试钻任务返回广州,这是“梦想”号开展大洋科学钻探的“首秀”。本航次历时30天,在中国南海4100米水深海域完成2口井钻探取心任务,成功钻获南海洋盆玄武岩样品,实现了南海构造演化科学研究、取心体系构建、国产核心钻探装备应用等多项突破。

近日,“梦想”号大洋钻探船成功钻获深海洋盆玄武岩样品,图为“梦想”号夜晚钻探作业航拍。张发涛 摄

本航次,“梦想”号最大完钻深度4929.17米,最大进尺864.77米,刷新中国自主实施最大作业水深钻探纪录。团队使用自主研发的回转取心钻具成功钻获4.27米玄武岩岩心样品,使中国成为继美国、日本之后全球第三个利用钻探船钻获深海洋盆硬岩样品的国家。同时,构建起与国际大洋钻探同等水准的取心作业体系,多个作业回次取心率突破100%,取心效率、质量和作业稳定性达国际大洋钻探先进水平。

团队创新构建起超深水高难度井钻探风险防控与应急处置体系。首次开展船载深海遥控潜水器(ROV)长时间、高强度连续协同作业,2台ROV在4000米水下累计作业超358小时,单次连续作业最长103小时,作业能力达国际先进水平。首次按照国际大洋钻探标准,现场完成岩心样品的采集、整理、编录、切剖、扫描、取样、测试、入库等全流程多参数处理分析,掌握了超深水大洋科学钻探全流程作业能力。

近日,“梦想”号大洋钻探船成功钻获深海洋盆玄武岩样品,图为现场工作人员进行取芯作业。张发涛 摄

航次获取了一大批宝贵岩心样品及数据资料,初步研究证实南海扩张脊跃迁后存在多期大规模火山喷发活动,为破解南海扩张等核心科学问题提供了关键实证,有望革新南海形成演化科学认知。同时,团队钻探发现大洋红层与绿-暗绿色沉积互层组合,并在海底以下813-864米处钻遇数十米厚的砂泥互层沉积构造,地层伴有明显的生物扰动,富含有机质,这是国内首次在南海超4000米水深、远离陆地的深部地层中发现该类特征,对研究南海古环境演化及超深水能源资源勘探开发等具有重要意义。

本航次由自然资源部中国地质调查局组织,广州海洋地质调查局负责实施,来自中国地质调查局、中海油服、北京大学、中船集团、中国地质大学(武汉)、海南大学、海南热带海洋学院等单位的170名科考队员参加。(完)

What to Watch

AI outlook — possibilities, not facts

  • 中国将在未来一年内利用‘梦想”号开展更多深海科学钻探任务

    Likely · Within months

  • 南海深部地层研究将迎来新突破,特别是在古环境演化和能源资源方面

    Possible · Within years

Open Questions

  • 这些玄武岩样品的具体年代和成分分析结果是什么?
  • 后续是否会进行更深层或更广区域的钻探?
  • 该技术是否可用于深海油气或矿产资源勘探?

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This article was originally published by 中国新闻网.

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