【摘要】：傳統(tǒng)導(dǎo)管作業(yè)通常采用鉆孔、下導(dǎo)管然后固井的方式。而海洋鉆井中,由于存在海底淺部地層比較松軟,泥線不穩(wěn)定等問(wèn)題,傳統(tǒng)的下導(dǎo)管作業(yè)方式不再適合海上深水作業(yè)。目前涌現(xiàn)出的噴射下導(dǎo)管鉆井技術(shù)能較好的解決傳統(tǒng)下導(dǎo)管作業(yè)不能解決的問(wèn)題。本文基于噴射下導(dǎo)管鉆井技術(shù)在海洋鉆井中的應(yīng)用,對(duì)導(dǎo)管入泥深度和鉆壓排量等噴射下導(dǎo)管的關(guān)鍵參數(shù)優(yōu)化方法進(jìn)行了研究,主要內(nèi)容及成果如下： (1)建立了海底淺部地層破裂壓力計(jì)算模型,根據(jù)已知的相關(guān)海底土參數(shù)可以對(duì)海底的最小壓力梯度進(jìn)行計(jì)算；建立了噴射下導(dǎo)管最小入泥深度模型和懸掛導(dǎo)管時(shí)的入泥深度模型,利用所建立的模型進(jìn)行了計(jì)算并對(duì)比分析了噴射下導(dǎo)管的成功現(xiàn)場(chǎng)案例,結(jié)果表明：最小入泥深度模型計(jì)算出的靜置時(shí)間能夠指導(dǎo)現(xiàn)場(chǎng)作業(yè),確定解脫送入工具CADA解脫的最短時(shí)間；利用懸掛導(dǎo)管時(shí)的入泥深度模型,得出在靜置時(shí)間后的入泥深度,考慮實(shí)際工況,驗(yàn)證導(dǎo)管下入深度的合理性,并最終確定入泥深度。 (2)分析了鉆壓和排量的對(duì)噴射下導(dǎo)管鉆井的影響,建立了鉆壓優(yōu)選理論計(jì)算模型和鉆壓計(jì)算簡(jiǎn)化模型,并結(jié)合現(xiàn)場(chǎng)數(shù)據(jù)進(jìn)行了相關(guān)計(jì)算,驗(yàn)算結(jié)果表明利用簡(jiǎn)化模型計(jì)算出的鉆壓滿足了理論計(jì)算；研究了噴射下導(dǎo)管水力噴射鉆進(jìn)機(jī)理,確定出了嘴小排量計(jì)算方法,進(jìn)行了排量?jī)?yōu)化試驗(yàn),試驗(yàn)得出結(jié)論與現(xiàn)場(chǎng)使用排量控制方法基本一致,驗(yàn)證了試驗(yàn)結(jié)論的正確性。 (3)根據(jù)本文建立的地層破裂壓力模型、入泥深度模型和鉆壓排量模型,編寫(xiě)了噴射下導(dǎo)管鉆井參數(shù)優(yōu)化軟件。該軟件可以為噴射下導(dǎo)管鉆井施工提供參考依據(jù),包括海底淺層地層壓力梯度的計(jì)算,入泥深度和優(yōu)化鉆壓、排量等參數(shù)的計(jì)算,并提供相對(duì)應(yīng)的計(jì)算結(jié)果曲線。
[Abstract]:The traditional conduit operation usually uses drilling, downducting and cementing. However, in offshore drilling, due to some problems such as relatively soft undersea shallow formation and unstable mud line, the traditional method of down-duct operation is no longer suitable for deep-water operation. At present, the jetting pipe drilling technology can solve the problems that can not be solved by traditional down-pipe operation. Based on the application of jet pipe drilling technology in offshore drilling, this paper studies the optimization methods of the key parameters of jet pipe, such as the mud depth and the displacement of drilling pressure. The main contents and results are as follows: (1) the model of fracture pressure in shallow seabed is established, and the minimum pressure gradient can be calculated according to the known parameters of seabed soil; The model of the minimum penetration depth of the jet tube and the model of the penetration depth of the suspension pipe are established. The successful cases of the jet tube are compared and analyzed by using the established model. The results show that the static time calculated by the minimum mud depth model can guide the field operation and determine the shortest time for the release into the tool CADA. By using the model of the inlet depth when the pipe is suspended, the depth of the inlet after the static time is obtained, considering the actual working conditions, the rationality of the inlet depth of the pipe is verified, and the depth of the inlet is finally determined. (2) the influence of drilling pressure and displacement on jet pipe drilling is analyzed, the theoretical calculation model of drilling pressure optimization and the simplified model of drilling pressure calculation are established, and the relevant calculation is carried out in combination with field data. The results show that the drilling pressure calculated by the simplified model satisfies the theoretical calculation. The mechanism of hydraulic jet drilling under jet pipe is studied, the calculation method of small displacement of nozzle is determined, and the optimization test of displacement is carried out. The conclusion of the experiment is basically consistent with the control method of displacement used in the field, and the correctness of the test conclusion is verified. (3) according to the formation fracture pressure model, the mud depth model and the drilling pressure displacement model, the optimization software of drilling parameters is developed. The software can be used as a reference for jet drilling, including the calculation of pressure gradient in shallow seabed formation, the calculation of mud penetration depth and optimized drilling pressure, displacement and so on, and the corresponding result curves are provided.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TE242.9

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 趙建亭;;深海半潛式鉆井平臺(tái)鉆機(jī)配置淺析[J];船舶;2006年04期

2 蘇堪華;管志川;;深水鉆井導(dǎo)管及表層套管豎向承載能力分析[J];重慶科技學(xué)院學(xué)報(bào)(自然科學(xué)版);2010年02期

3 周建良;楊進(jìn);嚴(yán)德;田瑞瑞;;深水表層導(dǎo)管下入方式適應(yīng)性分析[J];長(zhǎng)江大學(xué)學(xué)報(bào)(自然科學(xué)版);2013年02期

4 唐海雄;盛磊祥;陳彬;陳維杰;暢元江;陳國(guó)明;;深水噴射鉆井導(dǎo)管力學(xué)分析與強(qiáng)度校核[J];石油天然氣學(xué)報(bào);2010年05期

5 趙彩庭;王躍曾;唐海雄;劉正禮;張新平;弓大為;陽(yáng)文學(xué);;深水鉆井結(jié)構(gòu)套管?chē)娚浒惭b作業(yè)實(shí)踐[J];石油天然氣學(xué)報(bào);2011年05期

6 付英軍;姜偉;朱榮東;;深水表層導(dǎo)管安裝方法及風(fēng)險(xiǎn)控制技術(shù)研究[J];石油天然氣學(xué)報(bào);2011年06期

7 汪順文;楊進(jìn);嚴(yán)德;田瑞瑞;周波;劉正禮;王躍曾;;深水表層導(dǎo)管?chē)娚溷@進(jìn)機(jī)理研究[J];石油天然氣學(xué)報(bào);2012年08期

8 趙春雨;;淺談噴射鉆井技術(shù)在流花4-1油田某井的應(yīng)用[J];中國(guó)石油和化工標(biāo)準(zhǔn)與質(zhì)量;2012年11期

9 弓大為;海洋隔水管故障分析[J];石油礦場(chǎng)機(jī)械;2003年05期

10 王林,石曉兵,聶榮國(guó),陳平,羅平亞,周俊昌;軸向載荷對(duì)海洋深水鉆井隔水管力學(xué)特性的影響分析[J];石油礦場(chǎng)機(jī)械;2004年01期

，

本文編號(hào)：2372402