本文關(guān)鍵詞： 旋轉(zhuǎn)導(dǎo)向鉆井 井下偏置機(jī)構(gòu) 電路倉 有限元 優(yōu)化設(shè)計　出處：《重慶大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：旋轉(zhuǎn)導(dǎo)向鉆井技術(shù)實現(xiàn)了鉆采過程中的軌跡定向控制,已成為油氣開發(fā)鉆井過程中定向鉆井的主要和先進(jìn)技術(shù),代表著定向鉆井技術(shù)發(fā)展的主流方向。由于井下空間狹窄,并且充滿高溫、高壓的泥漿,為了充分利用空間,現(xiàn)用旋轉(zhuǎn)導(dǎo)向鉆井系統(tǒng)井下偏置機(jī)構(gòu)的電路倉主要采用分體式結(jié)構(gòu)。該結(jié)構(gòu)電纜布置、連接復(fù)雜,加工、裝配工藝繁瑣,降低了系統(tǒng)密封的可靠性。本文提出了一種用于井下偏置器的整體式電路倉結(jié)構(gòu)。首先采用傳統(tǒng)設(shè)計方法,從設(shè)計輸入出發(fā),通過電路倉區(qū)域相關(guān)零件旋轉(zhuǎn)芯軸的設(shè)計,過渡到整體式電路倉的結(jié)構(gòu)設(shè)計。之后采用CAE(Computer Aided Engineering)方法,對整體式電路倉結(jié)構(gòu)展開了優(yōu)化設(shè)計。在概念階段,采用拓?fù)鋬?yōu)化方法,計算出優(yōu)化的整體式電路倉初始模型。并在此基礎(chǔ)上展開詳細(xì)設(shè)計,采用了形狀優(yōu)化方法,將整體式電路倉的各單安裝腔體向其局部中心逼近,得到了整體式電路倉在設(shè)計空間內(nèi)滿足應(yīng)力條件下所能達(dá)到的最大安裝腔體。隨后再次對整體式電路倉的細(xì)節(jié)尺寸進(jìn)行比對優(yōu)選,并采用實際接觸模型進(jìn)行優(yōu)選,設(shè)計出滿足本次安裝要求,同時結(jié)構(gòu)強(qiáng)度最優(yōu)的整體式電路倉主體結(jié)構(gòu)。最后,將優(yōu)化設(shè)計后的整體式電路倉主體結(jié)構(gòu)與原設(shè)計進(jìn)行對比驗證,并從實際使用出發(fā),對整體式電路倉抗壓筒、基座之間的接觸強(qiáng)度進(jìn)行了詳細(xì)分析,驗證了整體式電路倉的結(jié)構(gòu)強(qiáng)度。本文應(yīng)用現(xiàn)代設(shè)計方法設(shè)計出了強(qiáng)度可靠的整體式電路倉,解決了旋轉(zhuǎn)導(dǎo)向鉆井系統(tǒng)的研制的關(guān)鍵技術(shù)問題。同時,本文方法也可作為石油鉆井裝備類似結(jié)構(gòu)設(shè)計優(yōu)化的參考。
[Abstract]:The rotary steering drilling technology has realized the directional trajectory control in drilling and production process, which has become the main and advanced technology of directional drilling in the process of oil and gas development and drilling, which represents the mainstream direction of directional drilling technology. And filled with high temperature and high pressure mud, in order to make full use of the space, the circuit bin of the downhole bias mechanism used in rotary steering drilling system mainly adopts the split structure. The cable arrangement of this structure is complicated, the connection is complicated, the processing and assembly technology is cumbersome, The reliability of the system seal is reduced. In this paper, an integral circuit bin structure for downhole bias device is proposed. Firstly, the traditional design method is used to design the rotating core shaft of the relevant parts in the area of the circuit bin, starting from the design input. After the structural design of the integrated circuit bin is carried out by using CAE(Computer Aided engineering method, the structural optimization of the integrated circuit bin is carried out. In the conceptual stage, the topology optimization method is adopted. The initial model of the optimized integrated circuit bunker is calculated. Based on this, the detailed design is carried out, and the shape optimization method is adopted to approach the local center of the single-mounted cavity of the integrated circuit bin. The maximum installation chamber can be achieved in the design space under the condition of satisfying the stress. Then, the detail size of the integrated circuit bin is compared and optimized again, and the actual contact model is used to optimize the selection. The main structure of the integrated circuit warehouse is designed to meet the requirements of this installation and the structural strength is optimal. Finally, the main structure of the integrated circuit bin after the optimization design is compared with the original design, and from the practical use, the main structure of the integrated circuit bin is compared with that of the original design. The contact strength between the anti-pressure cylinder and the base of the integral circuit bin is analyzed in detail, and the structural strength of the integral circuit bin is verified. In this paper, the integrated circuit bin with reliable strength is designed by using the modern design method. The key technical problems in the development of rotary steering drilling system are solved. At the same time, this method can also be used as a reference for similar structural design optimization of petroleum drilling equipment.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE92

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1 蘇茂春;旋轉(zhuǎn)導(dǎo)向鉆井系統(tǒng)電路倉結(jié)構(gòu)設(shè)計及優(yōu)化[D];重慶大學(xué);2015年

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本文編號：1543356