本文選題：氮?dú)忏@完井　切入點(diǎn)：管柱　出處：《西安石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：本文通過(guò)對(duì)管柱(鉆柱、套管、油管)材料在不同條件下的沖蝕速率和磨損表面形貌的分析,研究了沖蝕角度、沖蝕速度等因素對(duì)氮?dú)忏@完井管柱沖蝕性能的影響,探討了材料的沖蝕機(jī)理。在此基礎(chǔ)上,采用Fluent軟件對(duì)氮?dú)忏@井工況下環(huán)空氣固兩相流動(dòng)規(guī)律進(jìn)行了數(shù)值模擬研究。最后對(duì)管柱(鉆柱、套管、油管)在不同條件下的剩余強(qiáng)度和剩余壽命進(jìn)行預(yù)測(cè)。研究結(jié)果表明:隨著沖蝕速度的提高,鉆柱、套管、油管的平均失重率和平均壁厚減薄率均增加。鉆井工況下,BG13Cr-110和S135兩種鉆柱材料的臨界流速為20m/s,TP140套管材料在18°沖蝕角度的臨界流速為20m/s,在75°沖蝕角度的臨界流速為30m/s;生產(chǎn)工況下,P110油管材料無(wú)明顯臨界流速。延性材料30Cr Mo在較低沖蝕角下產(chǎn)生較大沖蝕,脆性材料Cr2O3在較高沖蝕角下將產(chǎn)生較大沖蝕。在相同沖蝕角下,噴涂Cr2O3的試樣失重率均比30Cr Mo高。采用計(jì)算流體動(dòng)力學(xué)方法建立了高速氣體攜巖沖蝕管柱的兩相流模型。通過(guò)對(duì)環(huán)空氣體流速、壓力、巖屑濃度、鉆柱和套管的沖蝕速率以及受到的剪切應(yīng)力分布等的分析后發(fā)現(xiàn),環(huán)空中心區(qū)域氣體和巖屑的流速最大,由中心向套管內(nèi)壁和鉆桿外壁遞減,直至壁面速度為零;鉆桿母接頭處巖屑沉積,濃度最大,并且鉆桿母接頭斜坡處剪切應(yīng)力最大。在沖蝕試驗(yàn)的基礎(chǔ)上,對(duì)在鉆井工況條件下,鉆柱BT13Cr-110和S135兩種材料以及套管TP140材料的剩余強(qiáng)度和剩余壽命進(jìn)行了計(jì)算;并且對(duì)在生產(chǎn)工況條件下,對(duì)油管P110材料的剩余強(qiáng)度和剩余壽命也進(jìn)行了計(jì)算。
[Abstract]:Based on the analysis of erosion rate and wear surface morphology of pipe string (drill string, casing, tubing) under different conditions, the effects of erosion angle, erosion velocity and other factors on erosion performance of nitrogen drilling and completion string are studied in this paper. The erosion mechanism of materials is discussed. On the basis of this, numerical simulation of annular air-solid two-phase flow under nitrogen drilling condition is carried out by using Fluent software. Finally, the pipe string (drill string, casing, casing) is studied. The residual strength and residual life of tubing are predicted under different conditions. The results show that: with the increase of erosion speed, drill string, casing, Under drilling conditions, the critical velocity of BG13Cr-110 and S135 drilling string materials is 20 m / s at 18 擄erosion angle and 20 m / s at 75 擄erosion angle. 30 m / s; under production conditions, there is no obvious critical flow rate for the tubing material P110. The ductile material 30Cr Mo produces large erosion at lower erosion angles. The brittleness material Cr2O3 will produce larger erosion at higher erosion angle, and at the same erosion angle, The weight loss rate of the sample sprayed with Cr2O3 is higher than that of 30Cr Mo. A two-phase flow model of high speed gas carrying rock and erosion pipe string is established by using computational fluid dynamics method. After analyzing the erosion rate and shear stress distribution of drill string and casing, it is found that the velocity of gas and cuttings in the annulus center is the largest, from the center to the inner wall of casing and the outer wall of drill pipe, until the velocity of wall is zero; On the basis of erosion test, on the basis of erosion test, the maximum concentration of cuttings and the maximum shear stress at the slope of drill pipe mother joint are obtained. The residual strength and life of drill string BT13Cr-110 and S135 and casing TP140 are calculated, and the residual strength and life of tubing P110 are also calculated under production conditions.
【學(xué)位授予單位】：西安石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE92

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 王新虎;薛繼軍;謝巨良;李懷仲;;鉆桿接頭抗扭強(qiáng)度及材料韌性指標(biāo)研究——系列專題之八[J];石油礦場(chǎng)機(jī)械;2006年S1期

2 彭善碧,李長(zhǎng)俊,劉恩斌,張維鑫;油氣管道剩余強(qiáng)度評(píng)價(jià)方法[J];石油工程建設(shè);2005年03期

3 劉斌;樓一珊;吳惠梅;;兩種套管剩余強(qiáng)度計(jì)算方法的對(duì)比與應(yīng)用[J];石油地質(zhì)與工程;2012年01期

4 蔡文軍,陳國(guó)明,潘東民,趙學(xué)年;腐蝕管線剩余強(qiáng)度評(píng)估的研究進(jìn)展[J];石油機(jī)械;1999年11期

5 劉祖煌;鉆桿接頭的強(qiáng)度分析[J];石油鉆采工藝;1986年01期

6 陳福來(lái);帥健;;SY/T6477—2000與API RP579—2000含體積型缺陷管道評(píng)定方法對(duì)比[J];壓力容器;2006年05期

，

本文編號(hào)：1648793