本文選題：注入頭系統(tǒng) + 環(huán)境載荷　； 參考：《燕山大學》2015年碩士論文

【摘要】：隨著連續(xù)油管作業(yè)技術的發(fā)展,越來越多的連續(xù)油管作業(yè)機被應用到油田開發(fā)中。連續(xù)油管作業(yè)機自出現(xiàn)到發(fā)展至今,出現(xiàn)過滾筒速度過快而失控、液壓系統(tǒng)紊亂、不能提供足夠的夾緊力、油管被下入和起出的過程中出現(xiàn)異響、注入頭驅動主軸被折斷或鏈條張緊軸被折斷、注入頭系統(tǒng)的鏈條被損壞等故障,給施工作業(yè)造成了一定的影響。注入頭作為連續(xù)油管作業(yè)機的核心部件,其性能日益為人們所重視。本文針對注入頭系統(tǒng)在現(xiàn)場使用過程中出現(xiàn)的損壞和故障,對注入頭系統(tǒng)的研究開展了以下幾方面的工作:首先闡述了連續(xù)油管注入頭的工作原理和基本功能,對其環(huán)境載荷進行了分析;對夾持塊與連續(xù)油管間的接觸壓力進行了分析,得出了接觸應力隨著摩擦系數(shù)變化的曲線。通過比較選取了最優(yōu)摩擦系數(shù),使得夾持塊與連續(xù)油管有較小的應力集中并且能有很好的夾持效果,為夾持塊的優(yōu)化設計提供了理論依據(jù)。其次對連續(xù)油管作業(yè)機注入頭夾持力的應力分布進行了研究,基于彈性力學平面問題的復變函數(shù)法,對前人的夾持管柱徑向壓力的假設進行改善,提出夾緊力為非正弦分布的假設;詳細推導了連續(xù)油管在夾持塊夾緊力的作用下的應力公式;利用Ansys軟件得出的有限元結果驗證了此解法的正確性。最后借助ANSYS軟件并利用正交試驗法,進行了夾持塊參數(shù)的敏感性分析,并從夾持塊相關參數(shù)如截面參數(shù)、內(nèi)徑尺寸及接觸面的卡牙設計方面對夾持塊進行了參數(shù)分析與優(yōu)化,以最大限度降低連續(xù)油管應力集中,延長使用壽命,為提升注入頭的使用壽命和現(xiàn)場作業(yè)的效率提供了理論依據(jù)和數(shù)據(jù)參考。
[Abstract]:With the development of continuous tubing technology, more and more coiled tubing machines are applied to oilfield development. From the appearance to the development of the continuous tubing machine, the roller has been too fast and out of control, the hydraulic system is disordered, it can not provide enough clamping force, and there is an abnormal noise in the process of the tubing going in and out. The main shaft of the injection head is broken or the tension shaft of the chain is broken, and the chain of the injection head system is damaged, which has a certain effect on the construction operation. As the core part of continuous tubing machine, the performance of injector is paid more and more attention. Aiming at the damage and failure of the injection head system in the field, the research of the injection head system has been carried out in the following aspects: firstly, the working principle and basic function of the continuous tubing injection head are expounded. The contact pressure between the clamping block and the continuous tubing is analyzed, and the curve of the contact stress changing with the friction coefficient is obtained. By comparing and selecting the optimal friction coefficient, the clamping block and the continuous tubing have small stress concentration and good clamping effect, which provides a theoretical basis for the optimum design of the clamping block. Secondly, the stress distribution of the clamping force at the injection head of the continuous tubing machine is studied. Based on the complex variable function method of the plane problem of elastic mechanics, the former hypothesis of the radial pressure of the clamping pipe string is improved. The assumption that the clamping force is a non-sinusoidal distribution is proposed, the stress formula of the continuous tubing under the clamping force of the clamping block is deduced in detail, and the correctness of the solution is verified by the finite element results obtained by Ansys software. Finally, the sensitivity analysis of the parameters of the clamping block is carried out with the aid of ANSYS software and the orthogonal test method, and the parameters of the clamping block are analyzed and optimized from the aspects of the parameters of the clamping block, such as section parameters, inner diameter dimensions and the design of the gripping teeth of the contact surface. In order to minimize stress concentration of continuous tubing and prolong service life, this paper provides theoretical basis and data reference for improving service life of injection head and efficiency of field operation.
【學位授予單位】：燕山大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE931.2

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本文編號：1935558