多相流體模型應(yīng)用的范圍

1、多相流體模型應(yīng)用的范圍RaoBharath 版權(quán)：年月日 18 1998 5 目錄 和活性氧相關(guān) Duns 和棕色的相關(guān) Hagedorn 相關(guān) Orkiszewski 和布里爾相關(guān) Beggs 一般建議參考資料摘要 and &Brown, Orkiszewski,correlations (Duns & Ros, HagedornFour multiphase flow models orThea well. pressure profile in & Brill) are currently available in Hydrafor predictingthe Beggs as, suc

2、h on several factors applicability of the multiphase flow models isdependent rangeofwithout water-cut. with or oil gravity, gas-liquid ratio, and, two-phaseflow tubing sizeor diameter, discussed well is the pressureprofile in a The effect ofeach of these factorson estimating the of A reasonably good

3、performance separately forall the multiphase modelsconsidered. error havea relative context of this document,is considered to multiphaseflow models,within theto 20%. less than orequal (betweenthe measuredand predictedvalues ofthe pressureprofile) 和活性氧 四多相流體模型或相關(guān)性 ,Hagedorn (Duns和布里爾目前供應(yīng)預(yù)測(cè)其 )Hydrafor

4、&Brown,Orkiszewski,Beggs 壓力剖面在一口井里。標(biāo)準(zhǔn)的適用范圍的多相流體模型是取決于 幾個(gè)因素如、油管大小或直徑、石油地心引力氣液比兩相流有 , 或沒(méi)有。效果每個(gè)這些因素的估算壓力剖面問(wèn)題分別井 water-cut 為所有的多相模型考慮。一個(gè)合理可靠的性能模型研究多相流動(dòng) , 的上下文以內(nèi)這個(gè)文件可以被認(rèn)為是兩個(gè)人之間的相對(duì)誤差測(cè)量 , 與預(yù)測(cè)值進(jìn)行壓力剖面小于或等于。 20% )Duns & Ros Corre-lationThe Duns & Ros correlation is developed for vertical flow of gas and liqui

5、d mixtures in wells.This correlation is valid for awide range of oil and gas mixtures and flow regimes. Although the correlation is intended for use with .dry. oil/gas mixtures, it can also be applicable to wet mixtures with a suitable correction. For water contents less than 10%, the Duns-Ros corre

6、lation (with a correction factor) has been reported to work well in the bubble, slug (plug), and froth regions. The pressure profile prediction performance of theDuns & Ros method is outlined below in relation to the several flow variables considered: 和活性氧的相關(guān)設(shè)計(jì)開(kāi)發(fā)了垂直流動(dòng)混合 物氣體或液體在 ,Duns威爾斯。這種關(guān)系是有效的廣泛的油

7、氣混合物和流量變化。雖然學(xué)資學(xué)習(xí)網(wǎng) 提供考研資料 相關(guān)是專為使用與油氣混合物它也可以適用于濕混合物和適 ,.dry.合的修正。為水份含量低于相關(guān)修正系數(shù)被報(bào) )10%,Duns-Ros ( 道來(lái)合作得很好這一泡沫的時(shí)候塞塞泡沫地區(qū)。壓力剖面的預(yù) ),( 測(cè)性能的方法和活性氧簡(jiǎn)述以下與幾個(gè)流量不同考慮 : DunsTubing Size. In general,the pressuredrop is seento be over predicted for a range of tubing diametersbetween1 and3 inches.管材的尺寸。 一般來(lái)說(shuō)其壓力損失預(yù)測(cè)可以看到

8、在為一系列 ,? 油管直徑到英寸。 13Oil Gravity. Good predictions of thepressure profile are obtained for a broad range of oil gravities (13-56 API).著重。 石油重力。良好的預(yù)測(cè)的壓力剖面上獲得了廣泛 API) ?的油。 (13-56API)Gas-Liquid Ratio (GLR). The pressuredrop is over predicted for awide rangeof 5000. than greaterGLR for 20%) ( large espec

9、ially becomeerrors The GLR. 氣液比。 壓降超過(guò)預(yù)期的范圍廣泛的。錯(cuò)誤尤其 GLR(GLR) ? 當(dāng)大比。 5000GLR 20%) (學(xué)資學(xué)習(xí)網(wǎng) 提供考研資料 Water-Cut.The Duns-Rosmodel is not applicable for multiphase flow mixtures of oil, water, andgas.However, the correlation can beusedwith a suitable correctionfactor as mentionedabove. 。 模型的不適用的混合物多相流動(dòng) 油、 ,W

10、ater-Cut Duns-Ros ?水、和天然氣。然而相關(guān)可以用一個(gè)合適的修正系數(shù)如上所述。Hagedorn & Brown CorrelationThis correlationwasdevelopedusingdataobtainedfrom a 1500-ft vertical well. Tubing diametersranging from 1-2 in. were consideredin the experimental analysis along with 5 different fluid types,namely: water andfour types of oil

11、 with viscosities ranging between10 and110cp ( 80 F) The correlation developedis independentof flow patternsand its performanceis briefly outlined below. 這種相關(guān)性研制出 一垂直所獲得的資料。管直徑從 1 -,F) 1500-ft歸被認(rèn)為是在實(shí)驗(yàn)分析以及個(gè)不同的流體類型即水和四 :5 80 2,種類型的油與范圍在到相關(guān)開(kāi)發(fā)的是獨(dú) viscosities 110(cp 10立于流動(dòng)特性與簡(jiǎn)要概述了其性能下面。Tubing Size. The p

12、ressurelossesareaccuratelypredicted for tubing sizesbetween1 and 1.5 in., the rangein which the experimental investigation was conducted.A further increasein tubing size causesthe pressuredrop to be over predicted. 管材的 學(xué)資學(xué)習(xí)網(wǎng) 提供考研資料 尺寸。 壓力損失是準(zhǔn)確的預(yù)測(cè)油管到歸大小的范圍1.5 1進(jìn)行試驗(yàn)研究。進(jìn)一步增加壓降油管大小原因預(yù)測(cè)。 ,Oil Gravity. Th

13、e Hagedorn-Brown methodis seento over predict the pressureloss for heavieroils (13-25 API) and under predict the pressureprofile for lighter oils (40-56 API) 石油重力。 看見(jiàn)的方法在游泳的壓力損失預(yù)測(cè)Hagedorn-Brown油下壓力分布預(yù)測(cè)輕油 API) (40-56 API 13-25Gas-Liquid Ratio (GLR). The pressuredrop is over predicted for GLR greatert

14、han 5000. 氣液比。壓降超過(guò)預(yù)期的大于。 5000GLR (GLR)Water-Cut. The accuracyof the pressureprofile predictions is generally good for a wide rangeof water-cuts. 。壓力剖面的準(zhǔn)確性預(yù)測(cè)是普遍好的適用于廣 泛的 Water-Cut。water-cutsOrkiszewski CorrelationThis correlation is limited to two-phasepressuredropsin a vertical pipe and is an extens

15、ionof Griffith & Wallis work. The correlation is valid for different flow regimes such as the bubble, slug, transition, and annular mist and is a compositeof severalmethods asshown below:這種相關(guān)性僅限于兩相壓力下降在垂直管道和是擴(kuò)展格里菲思和沃利斯的工作。相關(guān)的有效期為不同的流量變化如泡、塞、過(guò)渡學(xué)資學(xué)習(xí)網(wǎng) 提供考研資料 和環(huán)形霧和綜合的幾點(diǎn)如下MethodFlow RegimeGriffithBubbleG

16、riffith & WallisSlug (densityterm)OrkiszewskiSlug (friction term)Duns& RosTransitionDuns& RosAnnularMistIt should be notedthat the liquid distribution coefficient (hold-up) is evaluatedusing thedatafrom theHagedorn& Brown model. The performanceof Orkiszewski correlation is briefly outlined below for

17、 the flow variablesconsidered. 應(yīng)該指出的是該液體分布系數(shù)評(píng)估應(yīng)用數(shù)據(jù)從和棕Hagedorn, (?)色的模型。相關(guān)的性能簡(jiǎn)要概述了下面的流量不同考OrkiszewskiTubing Size.The correlati on performs well betwee n1 an d2 i n. tub in g sizes.The pressureloss is over predictedfor tubing sizesgreaterthan2 inches.管材的尺寸。相關(guān)表現(xiàn)良好到歸油管大小。壓力損失超過(guò)預(yù)1 2測(cè)大小油管大于英寸。2Oil Gravity

18、. At low oil gravities (13-30 API), the correlation over predictsthe pressureprofile. However, predicti ons aresee nto improve asoil API in creases.石油重力。在低油耗著重、相關(guān)在預(yù)測(cè)壓力的側(cè)面。)(13-30APIGas-Liquid Ratio (GLR). The accuracyof Orkiszewski method is very good forGLR up to 5000.The errorsbecomelarge ( 20%) f

19、or GLR above5000. 氣液比。 精度的方法具有較好的達(dá)到 (GLR) OrkiszewskiGLR。變大的錯(cuò)誤為以上。 5000 GLR5000 ( 20%)Water-Cut.The correlation predicts the pressuredrop with good accuracyfor awide rangeof water-cuts. 。相關(guān)預(yù)測(cè)壓降和精度好廣泛的。 water-cuts Water-CutBeggs & Brill Cor-relationThe Beggs& Brill correlation is developedfor tubing

20、stringsin inclined wells and pipelines for hilly terrain. This correlation resulted from experimentsusing air and water as test fluids over a wide rangeofparameters.Theperformanceof the correlation is given below. 和布里爾相關(guān)的開(kāi)發(fā)中弦樂(lè)油管斜井和管道 送丘陵地形。 Beggs這種關(guān)系是使用空氣和水從實(shí)驗(yàn)測(cè)試流體在大范圍的參數(shù)。相關(guān)的性能下面給出。Tubing Size. For t

21、he range in which the experimental investigation was conducted (i.e., tubing sizes between 1 and 1.5 in.), the pressure losses are accurately estimated. Any further increase in tubing size tends to result loss. pressure the in prediction over an in 管材的尺寸。的范圍內(nèi)進(jìn)行試驗(yàn)研究管道尺寸例如到英寸壓 ),(1.5,1學(xué)資學(xué)習(xí)網(wǎng) 提供考研資料 力損失

22、是正確的估計(jì)。任何進(jìn)一步增長(zhǎng)管道尺寸容易導(dǎo)致超重的壓力損失預(yù)測(cè)。Oil Gravity. A reasonably good performance is obtained over a broad spectrum ofoil gravities.石油重力。一個(gè)合理可靠的性能得到了廣泛的石油著重論述。Gas-Liquid Ratio (GLR). In general, an over predicted pressure drop is obtained with increasing GLR. The errors become especially large for GLR abov

23、e 5000.氣液比。一般來(lái)說(shuō)而獲得的壓降預(yù)測(cè)增加。尤其當(dāng)大 GLR(GLR)的錯(cuò)誤以上。 5000 GLRWater-Cut. The accuracy ofthe pressure profile predictions is generally good up to about 10% water-cut.。壓力剖面的準(zhǔn)確性預(yù)測(cè)是一般好。 10%water-cutWater-CutGeneral Recom-mendations一般 Recom-mendationsIn general, the Orkiszewski and Hagedorn & Brown model are fou

24、nd to perform satisfactorily for vertical wells with or without water-cut, and should therefore be considered equally asthe first choice in such wells. As mentioned earlier, the Duns & Ros correlation is not applicable for wells with water-cut and should be avoided for such cases. The Beggs & Brill

25、method is applicable for inclined wells with or without water-cut and is currently the best choice available for deviated wells. However, the method can also be utilized for vertical wells as the last choice. Finally, it should be always not may models flow multiphase the of performance the that not

26、edbe affected entirely by the particular flow variable against which the performance trend is indicated. In most cases, the performance of these models may be dependent on a combination of several of these flow variables considered. Therefore, keeping these limitations in mind, the above discussion

27、could be used as a guide to eliminate or select a particular correlation in the absence of other relevant information. 一般而言和和棕色的模型進(jìn)行了令人滿 Hagedorn ,Orkiszewski 意地對(duì)豎井或有或無(wú)同樣的因此它們應(yīng)該被考慮作為 , water-cut, 第一選擇在這樣的井里。如前面提到的和活性氧相關(guān)不適 ,Duns 用于井在應(yīng)當(dāng)避免為這樣的情況。和布里爾方 water-cut,Beggs 法的適用于斜威爾斯有或沒(méi)有的最佳選擇是目前可供 , water-cut

28、 與威爾斯。然而方法也可用于豎井的最后選擇。最后它應(yīng)該注意 的是研究多相流動(dòng)模型性能的影響不可能永遠(yuǎn)完全是由對(duì)特定流 量變量性能趨勢(shì)顯示。在大多數(shù)情況下的表現(xiàn)后這些模型可以依 賴一個(gè)相結(jié)合的幾個(gè)這些流量不同考慮。因此保持這些限制于心 上述討論可作為指導(dǎo)消除或者選擇特定相關(guān)在沒(méi)有其他相關(guān)信息。References1. Beggs,H. D. and Brill, J.P.:.A Study of Two-PhaseFlow in Inclined Pipes,. J. Pet. Tech.(May 1973) 607-617.2. Duns, H., Jr.and Ros, N. C. J.:

29、.Vertical Flow of Gasand Liquid Mixtures in Wells,. Proc. Sixth World Pet. Congress,Frankfurt (Jun. 19-26, 1963) Section II, Paper22- PD6.3. Espanol,J. H., Holmes, C. S., and Brown, K. E.: .A Comparisonof Existing Multiphase Flow Methods for the Calculation of PressureDrop in Vertical Wells,. SPE 2553 presentedat the 44th Annual Fal