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埕海区块钻井隔水管施工残余应力监测与分析
Residual stress monitoring and analysis of drilling riser construction in Chenghai block
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- DOI:
- 10.3969/j.issn.1001-2206.2025.S.023
- 作者:
- 李春, 边锋, 章昀昊
LI Chun, BIAN Feng, ZHANG Yunhao
- 作者单位:
- 1. 中国石油集团工程技术研究有限公司, 天津 300451;2. 中国石油集团海洋工程重点实验室, 天津 300451;3. 中国石油大港油田第四采油厂, 天津 300280
1. CNPC Engineering Technology R&D Company Limited, Tianjin 300451, China;2. CNPC Key Laboratory of Offshore Engineering, Tianjin 300451, China;3. No. 4 Oil Production Plant of Petro China Dagang Oilfield, Tianjin 300280, China
- 关键词:
- 钻井隔水管; 残余应力; 高应变动测; 土阻力分布
drilling riser;residual stress;high-strain dynamic testing;soil resistance distribution
- 摘要:
钻井隔水管作为海洋油气开发的重要设施，具有长径比大、入泥深度深、壁厚薄等显著特点，通常采用锤入法施工。在埕海海域特殊的地层条件和锤入施工方式的共同作用下，管体和周围土体中极易累积残余应力，导致隔水管中土阻力分布更加复杂。为此，依托埕海区块某海上油田钻井隔水管施工工程，采用锤击施工高应变动测分析技术，通过对多次锤击作用下隔水管动力响应特性进行监测分析，揭示了残余应力作用下隔水管周边土阻力分布特征。研究成果对埕海区块隔水管设计施工具有重要的借鉴意义。
Drilling risers, as key facilities for offshore oil and gas development, have significant features such as a large length-todiameter ratio, large driving depth, and thin wall thickness. Their construction typically adopts the hammering method. Under the combined effect of the special stratum conditions in the Chenghai Sea area and the hammering construction method, residual stress is highly prone to accumulate in the pipe body and the surrounding soil, which makes the distribution of soil resistance in the drilling riser more complex. To address this issue, based on the drilling riser construction project of a certain offshore oilfield in the Chenghai block, high-strain dynamic testing and analysis technology for hammering construction was adopted. Through monitoring and analysis of the dynamic response characteristics of the drilling riser under multiple hammering actions, the distribution characteristics of the soil resistance around the drilling riser under the influence of residual stress were revealed. The research results are of significant reference value for the design and construction of the drilling riser in the Chenghai block.