本文選題：智能井 + 流入控制閥��； 參考：《西南石油大學(xué)》2015年碩士論文

【摘要】：智能井技術(shù)作為當(dāng)今世界油田開發(fā)的技術(shù)前沿,是增加油田采收率的重要技術(shù)之一。自上世紀(jì)90年代以來,智能井技術(shù)在國外得到了廣泛的應(yīng)用,并在提高采收率、減少人員工作量、優(yōu)化開采方面取得了顯著的成績,但在國內(nèi)尚處于起步階段。 本文主要是針對智能井井下執(zhí)行機(jī)構(gòu)進(jìn)行研究,確切的說包括井下流入控制閥及其井下液壓控制部分。本文中主要介紹了流入控制閥的結(jié)構(gòu)設(shè)計的具體方案和井下液壓控制回路的設(shè)計；文中提出了一種能夠精確控制節(jié)流位置的控制閥和能夠在有限控制管線的條件下控制更多層位的液壓控制方案。本文的主要研究內(nèi)容有： (1)根據(jù)井下流入控制閥的工作特點,設(shè)計了井下流入控制閥的結(jié)構(gòu),合理的選擇井下流入控制閥的開口大小及井下金屬密封結(jié)構(gòu),并通過CAD及Proe軟件繪制井下流入控制閥的二維結(jié)構(gòu)和三維模型； (2)根據(jù)井下流入控制閥的特點,設(shè)計一種用于井下層位選擇的方向控制閥,該閥能夠?qū)⒃瓉碛扇龡l管線控制3產(chǎn)層提高為控制12產(chǎn)層。并能利用定量缸能有效的控制井下流入控制閥的節(jié)流位置； (3)考慮到井下復(fù)雜的工作環(huán)境,通過ANSYS對井下元件進(jìn)行數(shù)值分析,對各元件的結(jié)構(gòu)設(shè)計提供有效的數(shù)據(jù)支持。對井下金屬密封結(jié)構(gòu)進(jìn)行分析,探討影響金屬密封的主要因素對金屬密封壓力的影響；(4)建立井下流入控制閥的流場分析模型,通過ICEM網(wǎng)格劃分軟件對井下流場模型進(jìn)行結(jié)構(gòu)化網(wǎng)格劃分,并通過CFX流體分析軟件對控制閥在不同節(jié)流位置,不同壓差下進(jìn)行模擬分析,獲取在中性面的速度云圖和壓力云圖。了解流體在通過控制閥時的流動特性,并通過后處理軟件獲得在不同工況下通過控制閥的流量確定節(jié)流位置,壓差和流量的關(guān)系,計算控制閥的流量系數(shù)。
[Abstract]:Intelligent well technology is one of the most important techniques to increase oil recovery as the frontier of oilfield development in the world. Since the 1990s, intelligent well technology has been widely used in foreign countries, and has made remarkable achievements in improving oil recovery, reducing staff workload and optimizing exploitation, but it is still in its infancy in China. This paper mainly focuses on the research of the executive mechanism under the intelligent well, which includes the downhole inflow control valve and its downhole hydraulic control. This paper mainly introduces the structure design of the inflow control valve and the design of the downhole hydraulic control circuit. This paper presents a control valve which can accurately control the throttling position and a hydraulic control scheme which can control more layers under the condition of limited control pipeline. The main contents of this paper are as follows: 1) according to the working characteristics of the downhole inflow control valve, the structure of the downhole inflow control valve is designed, the opening size of the downhole inflow control valve and the underground metal seal structure are reasonably selected. The 2D structure and 3D model of downhole inflow control valve are drawn by CAD and Proe software. 2) according to the characteristics of downhole inflow control valve, a directional control valve is designed for underground layer selection. The valve can control 3 layers from 3 lines to 12 layers. It can effectively control the throttle position of downhole inflow control valve by using quantitative cylinder. Provide effective data support for the structural design of each component. The structure of underground metal seal is analyzed, and the influence of main factors on metal seal pressure is discussed. (4) the flow field analysis model of downhole inflow control valve is established. The downhole flow field model is structured meshed by ICEM software, and the control valve is simulated and analyzed at different throttle position and pressure difference by CFX fluid analysis software, and the velocity cloud and pressure cloud map on neutral surface are obtained. The flow characteristics of the flow through the control valve are understood, and the throttling position, pressure difference and flow rate are determined by the flow rate of the control valve under different working conditions through the post-processing software, and the flow coefficient of the control valve is calculated.
【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】：2015
【分類號】：TE938

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本文編號：2016650