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  本文選題：小井眼側(cè)鉆井　切入點(diǎn)：隨鉆震擊器　出處：《西南石油大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：小井眼側(cè)鉆技術(shù)是中后期油田開采過程中一個重要的組成部分,是對低滲透油氣層、裂縫油藏、邊際油氣層和死油區(qū)中的剩余油進(jìn)行開采十分有效的方法。但由于小井眼的環(huán)空間隙小,工具尺寸受限,再加上在鉆完井中地質(zhì)構(gòu)造復(fù)雜、工作人員的失誤等因素往往會發(fā)生卡鉆事故。隨鉆震擊器是一種隨著鉆具一起入井,當(dāng)卡鉆事故發(fā)生時,可隨時讓震擊器工作,對卡點(diǎn)產(chǎn)生強(qiáng)烈的沖擊力,達(dá)到解卡目的。近年來小井眼側(cè)鉆井井下事故趨于復(fù)雜,處理難度加大,這對于工具的性能提出了更高的要求。基于這樣的背景,本文通過對震擊器的分類與特點(diǎn)進(jìn)行總結(jié)以及對其工作原理進(jìn)行分析,創(chuàng)新設(shè)計出了一套結(jié)構(gòu)合理、性能優(yōu)越的上、下?lián)粢惑w全液壓式隨鉆震擊器。針對震擊器內(nèi)的單向溢流閥進(jìn)行了結(jié)構(gòu)優(yōu)化改進(jìn),提高震擊器的可靠性,降低作業(yè)成本。在全液壓式震擊器的設(shè)計過程中:首先收集并能動地消化多種結(jié)構(gòu)尺寸震擊器的相關(guān)專利和文獻(xiàn)資料,確立了設(shè)計方案;通過對國內(nèi)外常用的震擊器的分類與特點(diǎn)分析研究,創(chuàng)新性的設(shè)計出了一種可實(shí)現(xiàn)軸向低摩阻滑動的單缸雙作用全液壓式震擊器。基于有限元分析,對重要零部件都進(jìn)行了強(qiáng)度設(shè)計,使其滿足強(qiáng)度要求;模擬了液壓延時憋壓過程,對單向溢流閥體結(jié)構(gòu)尺寸進(jìn)行了優(yōu)化。在側(cè)鉆井解卡動力學(xué)方面,本論文建立起側(cè)鉆井震擊解卡模型,并結(jié)合三維井眼管柱"軟桿"摩阻計算方法,計算出傳遞到震擊器的上的釋放力,進(jìn)而得出震擊力;該模型與實(shí)際鉆井過程更加接近,摩阻的引入使計算出的震擊力更加精確,對震擊器的理論研究有一定的指導(dǎo)意義,對現(xiàn)場應(yīng)用有重要的參考價值。
[Abstract]:Slim hole sidetracking technology is an important component in the production process of middle and late oil fields. It is an important part of low permeability oil and gas reservoirs and fractured reservoirs. The method of producing residual oil in marginal reservoir and dead oil area is very effective. However, due to the small annulus in the hole, the tool size is limited, and the geological structure is complicated in drilling and completion. The driller is a kind of drilling tool that goes into the well with the drill tool. When the drilling accident occurs, the jitter can work at any time and produce a strong impact on the point of the jam. In recent years, the downhole accidents in slim hole side drilling tend to be more complicated and more difficult to deal with, which puts forward higher requirements for the performance of tools. In this paper, by summarizing the classification and characteristics of the shock hammer and analyzing its working principle, a set of reasonable structure and superior performance are designed. The structure of the one-way relief valve in the shock hammer is optimized and improved to improve the reliability of the shock hammer. To reduce the cost of operation. In the design process of full hydraulic shock hammer: firstly, collect and dynamically digest the relevant patents and documents of various structural sizes shock hammer, and establish the design scheme; Based on the analysis of the classification and characteristics of the commonly used shock hammer at home and abroad, a single cylinder double acting hydraulic shock hammer with low axial friction sliding is designed, which is based on finite element analysis. The strength design of the important parts is carried out to satisfy the strength requirement, the hydraulic delay pressure suppression process is simulated, and the structure size of the one-way overflow valve body is optimized. In this paper, the model of shock release card for lateral drilling is established, and combined with the calculation method of "soft rod" friction of three-dimensional borehole string, the release force transferred to the shock hammer is calculated, and the shock force is obtained, which is closer to the actual drilling process. The introduction of friction makes the calculated shock force more accurate, which has a certain guiding significance for the theoretical study of the shock hammer, and has an important reference value for the field application.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TE28

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本文編號：1646014