海洋采矿立管的下放及回收方法

The marine mining riser lowering method, which utilizes segmented operations and equipment combinations, solves the problems of low efficiency and insufficient safety in existing riser lowering and retrieval technologies. It achieves rapid and efficient riser lowering and retrieval, reducing abnormal operation time.

CN117468872BActive Publication Date: 2026-07-17CNPC NATIONAL OIL & GAS DRILLING EQUIPMENT ENGINEERING & TECHNOLOGY RESEARCH CENTER CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CNPC NATIONAL OIL & GAS DRILLING EQUIPMENT ENGINEERING & TECHNOLOGY RESEARCH CENTER CO LTD
Filing Date
2022-07-20
Publication Date
2026-07-17

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Abstract

本发明公开了一种海洋采矿立管的下放方法，步骤包括：1)将下放回收设备置于初始状态；2)安装中继舱；3)安装下方的采矿硬管；4)安装提升泵；5)安装提升泵上方的多个采矿硬管；6)安装管串；7)安装张紧器；8)将平台软管与补偿短节连通，将海底软管与中继舱连通，解锁伸缩装置的内外筒锁紧机构，使伸缩装置的内外筒处于自由伸缩状态，完成海洋采矿立管系统的下放安装。本发明还公开了一种海洋采矿立管的回收方法。本发明的方法，使用的配套设备技术成熟可靠，下放回收步骤操作简单、高效，提高了下放回收效率，减少了非正常作业时间，保证了海洋采矿立管下放回收过程的安全可靠。
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