一种快速连接深水膨胀型表层导管

By triggering the self-expanding outer layer of the shape memory alloy ring to make close contact with the soil, and the inner metal bushing providing rigid support, the hydraulic support components absorb vibration, thus solving the problems of low connection efficiency and poor sealing performance of traditional deep-water surface conduit, and achieving stability and efficient operation of the wellhead structure.

CN121803195BActive Publication Date: 2026-07-17SHANDONG QILONG OFFSHORE PETROLEUM STEEL PIPE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG QILONG OFFSHORE PETROLEUM STEEL PIPE
Filing Date
2026-03-10
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional deepwater surface conduit has low connection efficiency, poor sealing performance, and weak resistance to lateral pressure, making it difficult to maintain wellhead structural stability in harsh environments.

Method used

The outer layer of the structure, which is triggered by a shape memory alloy ring, is in close contact with the soil. The inner metal bushing provides rigid support, and the hydraulic support absorbs vibration. Combined with the double sealing structure, it achieves rapid connection and reliable sealing.

Benefits of technology

It significantly improves the efficiency of deepwater drilling operations, enhances the lateral friction and bending resistance of the surface guide tube, ensures the stability of the wellhead structure, extends its service life, and reduces maintenance costs.

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Abstract

本发明公开了一种快速连接深水膨胀型表层导管,属于深水导管技术领域,通过表层导管两端的公接头与母接头采用精密螺纹连接,无需复杂工装,可实现多根导管的快速装配与拆分,显著提升深水钻井作业效率,并通过形状记忆合金环在深水低温环境下触发自膨胀外层均匀膨胀,自膨胀外层内部结构膨胀推动其与土体形成凹凸式紧密接触,大幅提升接触面积,内层金属衬套提供刚性支撑,液压支撑件防止自膨胀外层在高压下过度变形,同时利用液压阻尼吸收振动,避免结合部位松动,显著提升表层导管的侧向摩擦力、抗弯能力与水下井口承载力,保障井口结构稳定。
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Citation Information

Patent Citations

  • Deep-water surface guiding pipe

    CN109356533A

  • Compression type external pipe packer based on low-carbon petroleum exploitation

    CN121024524A