【摘要】：海洋平臺(tái)鉆柱的升沉補(bǔ)償裝置是海洋鉆井裝備的重要組成部分。在深海鉆井中所便用的半潛式鉆井平臺(tái)或浮式鉆井船在波浪作用下將產(chǎn)生周期性升沉運(yùn)動(dòng),這種升沉運(yùn)動(dòng)會(huì)嚴(yán)重影響井底鉆壓,降低鉆井效率,縮短鉆具的工作壽命,并且導(dǎo)致操作存在安全隱患,從而可能造成巨大的經(jīng)濟(jì)損失。因此必須對(duì)鉆柱的升沉運(yùn)動(dòng)采取有效的補(bǔ)償措施。本文對(duì)目前現(xiàn)有的鉆柱升沉補(bǔ)償系統(tǒng)結(jié)構(gòu)、工作原理及特點(diǎn)進(jìn)行了對(duì)比介紹,分析各種升沉補(bǔ)償系統(tǒng)的優(yōu)缺點(diǎn)；利用非線(xiàn)性方法研究了平臺(tái)在規(guī)則波浪作用下的升沉運(yùn)動(dòng),建立了被動(dòng)式升沉補(bǔ)償系統(tǒng)的空間狀態(tài)方程,并通過(guò)Matlab編制了對(duì)應(yīng)的計(jì)算機(jī)程序進(jìn)行求解,分析了被動(dòng)式升沉補(bǔ)償系統(tǒng)的補(bǔ)償效果。目前使用的升沉補(bǔ)償系統(tǒng)按照能量供給方式主要分為被動(dòng)式升沉補(bǔ)償系統(tǒng)和主動(dòng)式升沉補(bǔ)償系統(tǒng),本文利用AMESim仿真軟件建立了兩種系統(tǒng)模型,對(duì)兩種系統(tǒng)進(jìn)行了動(dòng)態(tài)仿真,從補(bǔ)償效果和精度上對(duì)兩種系統(tǒng)進(jìn)行比較分析,并且分析討論了影響系統(tǒng)補(bǔ)償效果和精度的主要因素。通過(guò)前面的比較分析,提出了新型鉆柱升沉補(bǔ)償系統(tǒng)的設(shè)計(jì)方案,說(shuō)明其工作原理,并對(duì)系統(tǒng)的結(jié)構(gòu)尺寸參數(shù)及液壓控制系統(tǒng)進(jìn)行設(shè)計(jì)計(jì)算,然后利用AMESim仿真軟件對(duì)新型升沉補(bǔ)償系統(tǒng)進(jìn)行動(dòng)態(tài)仿真,不僅對(duì)比分析了新型升沉補(bǔ)償系統(tǒng)的補(bǔ)償效果和精度,同時(shí)還分析了新型升沉補(bǔ)償系統(tǒng)與主動(dòng)式升沉補(bǔ)償系統(tǒng)的能耗問(wèn)題,從而驗(yàn)證了新型升沉補(bǔ)償系統(tǒng)的可行性,為升沉補(bǔ)償系統(tǒng)的優(yōu)化提供了豐富的理論基礎(chǔ)。
[Abstract]:The offshore platform drilling string heave compensation device is an important part of offshore drilling equipment. Semi-submersible drilling platform or floating drilling vessel used in deep-sea drilling will produce periodic heave motion under the action of waves. This heave motion will seriously affect bottom hole drilling pressure, reduce drilling efficiency, shorten the working life of drilling tools, and This paper introduces the structure, working principle and characteristics of the existing drill string heave compensation system, analyzes the advantages and disadvantages of various heave compensation systems, and makes use of non-linear methods. This paper studies the heave motion of the platform under regular wave action, establishes the space state equation of the passive heave compensation system, and solves it by the corresponding computer program compiled by MATLAB. The compensation effect of the passive heave compensation system is analyzed. Dynamic heave compensation system and active heave compensation system, this paper uses AMESim simulation software to establish two system models, dynamic simulation of the two systems, from the compensation effect and accuracy of the two systems are compared and analyzed, and discussed the main factors affecting the system compensation effect and accuracy. The design scheme of a new type of drill string heave compensation system is put forward, and its working principle is explained. The structural dimension parameters and hydraulic control system are designed and calculated. Then the new type of heave compensation system is simulated dynamically by using AMESim simulation software. The compensation effect of the new type of heave compensation system is compared and analyzed. At the same time, the energy consumption of the new heave compensation system and the active heave compensation system is analyzed, which verifies the feasibility of the new heave compensation system and provides a rich theoretical basis for the optimization of the heave compensation system.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TE951

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本文編號(hào)：2211704