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有限空间内陆对海水平定向钻穿越技术应用
Land-to-sea horizontal directional drilling crossing technology in limited space
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- DOI:
- 10.3969/j.issn.1001-2206.2025.S.009
- 作者:
- 钱洪波, 李明
QIAN Hongbo, LI Ming
- 作者单位:
- 天津大港油田集团工程建设有限责任公司, 天津 300270
Tianjin Dagang Oilfield Group Engineering Construction Co., Ltd., Tianjin 300270, China
- 关键词:
- 海底管道; 陆对海水平定向钻; 管道穿越; 有限空间; 分段回拖
submarine pipeline;land to sea horizontal directional drilling;pipeline crossing;limited space;segmented pull-back
- 摘要:
- 海底管道陆对海水平定向钻穿越技术作为海洋管道登陆的关键施工工艺，该技术无需占用大量土地，仅在陆地登陆点、海上与常规段海底管道铺设末端安装设备，并通过钻孔、扩孔、管道回拖等工序，即可实现管道定向钻穿越。因其具有控向精准、占地面积小、施工效率高、环境适应性强等优势，目前已被广泛应用于海洋油气管网工程。但随着城市建设规模的扩大，定向钻待回拖管道预制区由原本可整体直线预制的区域缩小为管道长度的三分之一，甚至更短，对施工组织与作业效率带来了新的挑战。为此，以青岛市某海底天然气管道项目为例，开展有限空间内陆对海水平定向钻穿越技术研究，并提出针对性的解决方案，保证了该项目穿越段管道回拖作业一次性成功。
The land-to-sea horizontal directional drilling crossing technology of submarine pipelines is a key construction technique for offshore pipeline landing. This technology does not need to occupy a large amount of land. It can realize directional drilling crossing of pipelines just by installing equipment at the end of landing points on land, offshore, and conventional sections of submarine pipelines, and conducting procedures of drilling, reaming, and pipeline pull-back. Due to its advantages of precise directional control, small site area, high construction efficiency, and strong environmental adaptability, it has been widely employed in offshore oil and gas pipeline network projects. However, with the expanding scale of urban construction, the prefabricated area of the directional drilling pipeline to be pulled back has been reduced from the area that can be prefabricated in a whole and straight line to one-third of the length of the pipeline, or even shorter, thus posing new challenges to the construction organization and operation efficiency. Therefore, this paper took a submarine natural gas pipeline project in Qingdao as an example to carry out the research on land-to-sea horizontal directional drilling crossing technology, and put forward targeted solutions, thus ensuring the one-time success of the pipeline pull-back operation in the crossing section of the project.