本文選題：水平井 + 固井　； 參考：《西南石油大學(xué)》2015年碩士論文

【摘要】：水平井技術(shù)成為川西地區(qū)增儲(chǔ)上產(chǎn)的重要手段,但由于該地區(qū)地質(zhì)條件復(fù)雜,地層不穩(wěn)定,鉆井過(guò)程中易形成巖屑床,同時(shí)還存在鉆井液固相含量大,泥餅虛厚,前期循環(huán)不充分等問(wèn)題使井眼難以清潔,影響了該地區(qū)水平井固井質(zhì)量。本論文針對(duì)該地區(qū)固井目前存在巖屑床和黏附泥餅清潔困難的問(wèn)題,提出了使用纖維沖洗液、旋流扶正器兩項(xiàng)措施解決這些問(wèn)題,并通過(guò)室內(nèi)模擬試驗(yàn),研究其對(duì)泥餅沖洗和巖屑床清除的效果。 利用高溫高壓前置液動(dòng)態(tài)沖洗效率實(shí)驗(yàn)裝置研究不同濃度纖維沖洗液和沖洗速度對(duì)泥餅沖洗效率的影響,泥餅沖洗效率隨纖維濃度、沖洗速度增加而增大。同時(shí),利用頂替效率模擬裝置研究不同纖維濃度、排量、偏心度和黏度對(duì)巖屑床清除的影響：巖屑床清除效率與環(huán)空排量成正比,與套管偏心度成反比、與沖洗液黏度成正比。通過(guò)上述實(shí)驗(yàn)確定了纖維最佳濃度范圍。 利用頂替效率模擬裝置對(duì)比分析了不同排量和偏心度時(shí),常規(guī)扶正器與旋流扶正器清除巖屑的效果,相同實(shí)驗(yàn)條件時(shí),旋流扶正器的巖屑清除效率明顯高于常規(guī)扶正器；同時(shí),巖屑床清除效率與旋流扶正器和巖屑床之間的距離成反比。 利用離子圖像測(cè)速(PIV)儀對(duì)比分析了環(huán)空無(wú)旋流場(chǎng)與旋流流場(chǎng),水平環(huán)空窄間隙無(wú)旋流場(chǎng)軸向速度分布與旋流流場(chǎng)分布相似,窄間隙中間區(qū)域流速高,近套管與近井壁處流速小,且近井壁處最小。環(huán)空旋流流場(chǎng)的軸向速度小于無(wú)旋流場(chǎng)；環(huán)空無(wú)旋流場(chǎng)軸向速度沿環(huán)空間隙中心線對(duì)稱,而環(huán)空旋流流場(chǎng)軸向速度峰點(diǎn)偏向井壁,且其切向分速度沿軸向衰減。 以新沙X井為例,設(shè)計(jì)并優(yōu)選了該井固井沖洗液施工方案,以及旋流扶正器安放間距。
[Abstract]:Horizontal well technology has become an important means of increasing reservoir production in western Sichuan. However, because of the complex geological conditions and unstable formation in this area, cuttings bed is easy to be formed during drilling. At the same time, there are also large solid content of drilling fluid and virtual thickness of mud cake. It is difficult to clean the borehole due to insufficient circulation in the early stage, which affects the cementing quality of horizontal well in this area. In this paper, aiming at the problem of hard cleaning of cuttings bed and adhesive cake in cementing in this area, two measures are put forward to solve these problems, which are fiber flushing fluid and swirl centralizer, and these problems are solved by laboratory simulation test. The effect of mud cake washing and debris bed cleaning was studied. The effects of different concentration of fiber flushing fluid and flushing speed on the mud cake washing efficiency were studied by using the dynamic washing efficiency experimental device of high temperature and high pressure presolution. The mud cake washing efficiency was dependent on the fiber concentration. The washing speed increases with the increase of the washing speed. At the same time, the effects of fiber concentration, displacement, eccentricity and viscosity on the removal of cuttings bed are studied by means of displacement efficiency simulator. The removal efficiency of cuttings bed is directly proportional to annular discharge, inversely proportional to casing eccentricity, and directly proportional to flushing fluid viscosity. Through the above experiments, the optimum concentration range of fiber is determined. The effects of conventional centralizer and swirl centralizer on the removal of cuttings with different displacement and eccentricity are compared and analyzed by using displacement efficiency simulator, when the experimental conditions are the same, The debris removal efficiency of swirl centralizer is obviously higher than that of conventional centralizer. The removal efficiency of the cuttings bed is inversely proportional to the distance between the swirl centralizer and the cuttings bed. The annulus free flow field and the swirl flow field are compared and analyzed by ion image velocimetry (PIV) instrument. The axial velocity distribution of the narrow gap in horizontal annulus is similar to that of the swirl flow field. The velocity in the middle area of narrow gap is high, the velocity near casing and near shaft wall is small, and the velocity near shaft wall is the smallest. The axial velocity of annulus swirl flow field is smaller than that of non-swirl flow field, the axial velocity of annulus swirl flow field is symmetrical along the center line of annulus clearance, while the axial velocity peak point of annulus swirl flow field is inclined to well wall. And its tangential velocity attenuates along the axial direction. Taking Xinsha X well as an example, the construction scheme of cementing fluid and the spacing of cyclone centralizer are designed and optimized.
【學(xué)位授予單位】：西南石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE256

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王宏偉;;提高塔河油田水平井固井質(zhì)量的措施[J];重慶科技學(xué)院學(xué)報(bào)(自然科學(xué)版);2011年04期

2 肖博;張士誠(chéng);郭天魁;鄒雨時(shí);侯騰飛;;頁(yè)巖氣藏清水壓裂懸砂效果提升實(shí)驗(yàn)[J];東北石油大學(xué)學(xué)報(bào);2013年03期

3 于繼彬;文先敏;張加波;;基于ANSYS的套管旋流扶正器旋流長(zhǎng)度的確定[J];石油天然氣學(xué)報(bào);2008年02期

4 劉彝;吳均;王永剛;黃堅(jiān)毅;韓東;程莫驥;;新型纖維在水力壓裂液中的應(yīng)用[J];精細(xì)石油化工進(jìn)展;2009年11期

5 鄭志剛;楊紅麗;;提高水平井固井質(zhì)量的幾點(diǎn)認(rèn)識(shí)[J];內(nèi)蒙古石油化工;2009年23期

6 吳紅軍;伊向藝;林笑;祝成;楊杰;吳元琴;;含纖維的低摩阻壓裂液試驗(yàn)研究[J];油氣藏評(píng)價(jià)與開(kāi)發(fā);2013年01期

7 張鵬偉;肖武鋒;顧軍;鄒玉蘭;黃繼成;;“死泥漿”影響界面膠結(jié)力學(xué)性能的實(shí)驗(yàn)研究[J];石油與天然氣化工;2007年02期

8 管志川,宋洵成;波動(dòng)壓力約束條件下套管與井眼之間環(huán)空間隙的研究[J];石油大學(xué)學(xué)報(bào)(自然科學(xué)版);1999年06期

9 王智鋒;;復(fù)雜結(jié)構(gòu)井巖屑床清除技術(shù)[J];石油鉆采工藝;2009年01期

10 丁士東,唐世春,田平,張金龍;塔河油田深水平井固井技術(shù)[J];石油鉆探技術(shù);2001年03期

，

本文編號(hào)：1992732