本文選題：自升式鉆井船 + 樁靴貫入　； 參考：《海洋通報(bào)》2017年03期

【摘要】：自升式鉆井船被廣泛用于中、淺水域油氣鉆井、勘探開發(fā)或平臺(tái)維修等海洋工程。通常,鉆井船靠作業(yè)臂工作,由于其極限長度有限,所以鉆井船作業(yè)時(shí)經(jīng)常緊鄰固定式導(dǎo)管架海洋平臺(tái)。軟弱土層中,鉆井船就位時(shí)插樁深度較深,插樁過程中大量土體被排開,致使鄰近平臺(tái)樁基可能承受很大的附加荷載,這些附加荷載與樁基原有的荷載相疊加,很有可能超出其原有設(shè)計(jì)承載能力,引起嚴(yán)重的工程安全隱患和經(jīng)濟(jì)損失。如何可靠地評(píng)估自升式鉆井船插樁對(duì)鄰近導(dǎo)管架平臺(tái)樁基的影響,從而優(yōu)化鉆井船定位并指導(dǎo)導(dǎo)管架平臺(tái)樁基礎(chǔ)的早期設(shè)計(jì),是我國當(dāng)前海上油氣開發(fā)亟需解決的一個(gè)難點(diǎn)問題,迄今為止尚沒有形成一種被廣泛認(rèn)可的方法。基于此,系統(tǒng)闡述了評(píng)價(jià)自升式鉆井船插樁對(duì)鄰近樁基影響的方法,包括模型試驗(yàn)、簡化理論方法和數(shù)值方法,分析了現(xiàn)有方法中存在的問題,并對(duì)未來的研究方向提出了建議,供讀者參考。
[Abstract]:Jack-up drilling vessels are widely used in offshore engineering, such as oil and gas drilling, exploration and development, and platform maintenance in shallow waters.Usually, the drilling ship works on the working arm, because its limit length is limited, so the drilling ship often works next to the fixed jacket offshore platform.In the weak soil layer, when the drilling ship is in place, the depth of the pile is deep, and a large amount of soil is discharged during the pile insertion, which may cause the pile foundation adjacent to the platform to bear a very large additional load, which is superimposed with the original load of the pile foundation.It is likely to exceed its original design capacity, causing serious engineering safety risks and economic losses.How to evaluate reliably the influence of jack-up drilling ship pile insertion on the pile foundation of adjacent jacket platform, so as to optimize the location of drilling vessel and guide the early design of jacket platform pile foundation.It is a difficult problem that needs to be solved in China's offshore oil and gas development. Up to now, there has not been a widely accepted method.Based on this, the methods of evaluating the influence of jack-up drilling ship on adjacent pile foundation are systematically expounded, including model test, simplified theoretical method and numerical method, and the problems existing in the existing methods are analyzed.Suggestions for the future research direction are put forward for readers' reference.
【作者單位】： 中海油研究總院;中國科學(xué)院力學(xué)研究所;
【基金】：中國海洋石油總公司綜合科研項(xiàng)目(ZHKY-2013-ZY-05) 中國博士后科學(xué)基金
【分類號(hào)】：P751

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