本文選題：不壓井作業(yè)裝置 + 舉升系統(tǒng)　； 參考：《長江大學(xué)》2017年碩士論文

【摘要】：相對(duì)于傳統(tǒng)的修井作業(yè),不壓井作業(yè)有諸多優(yōu)勢(shì),它改變了以往放噴溢流或利用循環(huán)壓井液壓井的作業(yè)方式,可以更好的保護(hù)地層結(jié)構(gòu)和環(huán)境,從而提高油氣的產(chǎn)出能力,也降低了作業(yè)風(fēng)險(xiǎn)。作為不壓井作業(yè)裝置的核心部分之一,舉升系統(tǒng)的結(jié)構(gòu)形式和強(qiáng)度直接決定了整套設(shè)備的承載能力和安全性能�，F(xiàn)場(chǎng)工作過程中存在的沖擊和振動(dòng)也會(huì)對(duì)不壓井作業(yè)裝置產(chǎn)生影響。而舉升油缸的同步性關(guān)系到整個(gè)裝置的使用壽命和安全性能。鑒于此,筆者開展了不壓井作業(yè)裝置舉升系統(tǒng)的設(shè)計(jì)與研究,主要開展了如下工作:(1)介紹了不壓井作業(yè)技術(shù)及其應(yīng)用方面,簡述了其作業(yè)裝置的分類方式。通過研究國內(nèi)外發(fā)展現(xiàn)狀,說明了課題研究的背景、意義及主要研究內(nèi)容。(2)詳細(xì)介紹了不壓井作業(yè)裝置的主要結(jié)構(gòu)以及舉升系統(tǒng)的工作原理,對(duì)其在工作過程中所承受的載荷類型進(jìn)行了分析。根據(jù)所受載荷大小對(duì)舉升系統(tǒng)的舉升液壓缸進(jìn)行了參數(shù)設(shè)計(jì)。由于裝置在工作過程中存在無支撐區(qū)間段,故分析了在強(qiáng)行下壓三種標(biāo)準(zhǔn)規(guī)格管柱時(shí)不同井壓下的失穩(wěn)情況。根據(jù)入井深度的不同得出對(duì)應(yīng)的最大作業(yè)行程,為現(xiàn)場(chǎng)作業(yè)施工提供了相應(yīng)的理論依據(jù)。(3)分析了不壓井作業(yè)裝置在最大上提力和最大下壓力工況下支撐托盤和承載架的受力變形情況,結(jié)果表明所設(shè)計(jì)舉升系統(tǒng)的各個(gè)部件均滿足強(qiáng)度要求。同時(shí),根據(jù)舉升液壓缸活塞桿上升至最大行程處時(shí)的實(shí)際情況,對(duì)其穩(wěn)定性進(jìn)行了校核。(4)對(duì)模態(tài)分析進(jìn)行了簡單概述,介紹了彈性力學(xué)中結(jié)構(gòu)動(dòng)力學(xué)有限元方程,以及結(jié)構(gòu)無阻尼和外載的自由振動(dòng)方程和特征值。利用ANSYS對(duì)不壓井作業(yè)裝置的舉升系統(tǒng)進(jìn)行了模態(tài)仿真研究,計(jì)算得到裝置的前十階固有頻率值。(5)研究不壓井作業(yè)裝置舉升系統(tǒng)的液控部分,設(shè)計(jì)了液控回路系統(tǒng)。通過建立液控系統(tǒng)的仿真模型得到液壓缸位移、流量和速度隨時(shí)間的變化關(guān)系。結(jié)果表明所設(shè)計(jì)回路滿足工作速度要求和同步性要求,為實(shí)際系統(tǒng)的試驗(yàn)提供了一定的參考。
[Abstract]:Compared with the traditional workover operation, the no-well killing operation has many advantages. It has changed the operation mode of releasing blowout overflow or using circulating well killing hydraulic well, and can better protect the ground structure and environment, thus improving the oil and gas production ability. It also reduces the operational risk. As one of the core parts of the equipment, the structure and strength of the lifting system directly determine the bearing capacity and safety performance of the whole equipment. The impact and vibration during the field work will also affect the operation equipment. The synchronicity of the lift cylinder relates to the service life and safety performance of the whole device. In view of this, the author has carried out the design and research of the lifting system of the non-well killing operation device. The main work is as follows: 1) the technology and application of the non-well killing operation are introduced, and the classification method of the operation device is briefly described. By studying the development situation at home and abroad, the background, significance and main research contents of the project are explained. (2) the main structure of the equipment and the working principle of the lifting system are introduced in detail. The type of load is analyzed. The parameters of the lifting hydraulic cylinder are designed according to the load. Due to the existence of unsupported section in the working process of the device, the instability under different well pressure is analyzed when three kinds of standard pipe string are forced under pressure. According to the different depth of well entry, the corresponding maximum operating stroke is obtained. This paper provides the corresponding theoretical basis for the field operation. (3) analyzes the deformation of the supporting tray and the bearing frame under the maximum lifting force and the maximum downward pressure condition of the non-well killing operation device, and analyzes the deformation of the supporting tray and the bearing frame under the condition of the maximum lifting force and the maximum downward pressure. The results show that all parts of the lifting system meet the strength requirements. At the same time, according to the actual situation when the piston rod of lifting hydraulic cylinder rises to the maximum stroke, the stability of the piston rod is checked and the modal analysis is briefly summarized, and the finite element equation of structural dynamics in elastic mechanics is introduced. And the free vibration equation and eigenvalue of the structure without damping and external load. A modal simulation study on the lifting system of a non-well killing operation device is carried out by using ANSYS. The first ten natural frequency values of the device are calculated and the hydraulic control part of the lifting system of the non-well killing operation device is studied. The hydraulic control loop system is designed. By establishing the simulation model of hydraulic control system, the relationship among displacement, flow rate and speed of hydraulic cylinder with time is obtained. The results show that the designed circuit meets the requirements of working speed and synchronism, and provides a certain reference for the actual system test.
【學(xué)位授予單位】：長江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TE935

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