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1、精选优质文档-倾情为你奉上多相流体模型应用的范围版权：Bharath Rao1998年5月18日目录Duns和活性氧相关Hagedorn和棕色的相关Orkiszewski相关Beggs和布里尔相关一般建议参考资料摘要Four multiphase flow models or correlations (Duns & Ros, Hagedorn &Brown, Orkiszewski, and Beggs & Brill) are currently available in Hydrafor predicting the pressure profile in a well. The ran
2、ge of applicability of the multiphase flow models is dependent on several factors such as, tubing size or diameter, oil gravity, gas-liquid ratio, and, two-phase flow with or without water-cut. The effect of each of these factors on estimating the pressure profile in a well is discussed separately f
3、or all the multiphase models considered. A reasonably good performance of the multiphase flow models, within the context of this document, is considered to have a relative error (between the measured and predicted values of the pressure profile) less than or equal to 20%.四多相流体模型或相关性(Duns和活性氧,Hagedor
4、n &Brown,Orkiszewski,Beggs和布里尔)目前供应Hydrafor预测其压力剖面在一口井里。标准的适用范围的多相流体模型是取决于几个因素,如、油管大小或直径、石油地心引力,气液比,两相流有或没有water-cut。效果每个这些因素的估算压力剖面问题分别井为所有的多相模型考虑。一个合理可靠的性能模型,研究多相流动的上下文以内这个文件,可以被认为是两个人之间的相对误差测量与预测值进行压力剖面)小于或等于20%。Duns & Ros Corre-lationThe Duns & Ros correlation is developed for vertical flow of g
5、as and liquid mixtures in wells. This correlation is valid for a wide 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
6、Duns-Ros correlation (with a correction factor) has been reported to work well in the bubble, slug (plug), and froth regions. The pressure profile prediction performance of the Duns & Ros method is outlined below in relation to the several flow variables considered:Duns和活性氧的相关,设计开发了垂直流动混合物气体或液体在威尔斯。
7、这种关系是有效的广泛的油气混合物和流量变化。虽然相关是专为使用与.dry.油气混合物,它也可以适用于湿混合物和适合的修正。为水份含量低于10%,Duns-Ros相关(修正系数)被报道来合作得很好,这一泡沫的时候,塞(塞),泡沫地区。压力剖面的预测性能的方法Duns和活性氧简述以下与几个流量不同考虑:Tubing Size. In general, the pressure drop is seen to be over predicted for a range of tubing diameters between 1 and 3 inches.! 管材的尺寸。一般来说,其压力损失预测可以看
8、到在为一系列油管直径1到3英寸。Oil Gravity. Good predictions of the pressure profile are obtained for a broad range of oil gravities (13-56 API).! 着重API)。石油重力。良好的预测的压力剖面上获得了广泛的油(13-56API)。Gas-Liquid Ratio (GLR). The pressure drop is over predicted for a wide range of GLR. The errors become especially large ( 20%)
9、for GLR greater than 5000.! 气液比(GLR)。压降超过预期的范围广泛的GLR。错误尤其当大( 20%)比GLR 5000。Water-Cut. The Duns-Ros model is not applicable for multiphase flow mixtures of oil, water, and gas. However, the correlation can be used with a suitable correction factor as mentioned above.! Water-Cut。Duns-Ros模型的,不适用的混合物多相流
10、动油、水、和天然气。然而,相关可以用一个合适的修正系数如上所述。Hagedorn & Brown CorrelationThis correlation was developed using data obtained from a 1500-ft vertical well. Tubing diameters ranging from 1-2 in. were considered in the experimental analysis along with 5 different fluid types, namely: water and four types of oil with
11、 viscosities ranging between 10 and 110 cp ( 80F) The correlation developed is independent of flow patterns and its performance is briefly outlined below.这种相关性,研制出一1500-ft垂直所获得的资料。管直径从1 - F)802归被认为是在实验分析以及5个不同的流体类型,即:水和四种类型的油与viscosities范围在10到110(cp 相关开发的是独立于流动特性与简要概述了其性能下面。Tubing Size. The pressure
12、 losses are accurately predicted for tubing sizes between 1 and 1.5 in., the range in which the experimental investigation was conducted. A further increase in tubing size causes the pressure drop to be over predicted.管材的尺寸。压力损失是准确的预测油管1到1.5归大小的范围,进行试验研究。进一步增加压降油管大小原因,预测。Oil Gravity. The Hagedorn-Br
13、own method is seen to over predict the pressure loss for heavier oils (13-25 API) and under predict the pressure profile for lighter oils (40-56 API)石油重力。Hagedorn-Brown看见的方法在游泳的压力损失预测油13-25API下压力分布预测轻油(40-56 API)Gas-Liquid Ratio (GLR). The pressure drop is over predicted for GLR greater than 5000.气液
14、比(GLR)。压降超过预期的GLR大于5000。Water-Cut. The accuracy of the pressure profile predictions is generally good for a wide range of water-cuts.Water-Cut。压力剖面的准确性预测是普遍好的适用于广泛的water-cuts。Orkiszewski CorrelationThis correlation is limited to two-phase pressure drops in a vertical pipe and is an extension of Grif
15、fith & Wallis work. The correlation is valid for different flow regimes such as the bubble, slug, transition, and annular mist and is a composite of several methods as shown below:这种相关性仅限于两相压力下降在垂直管道和是扩展格里菲思和沃利斯的工作。相关的有效期为不同的流量变化如泡、塞、过渡和环形雾和综合的几点如下:MethodFlow RegimeGriffithBubbleGriffith & WallisSlu
16、g (density term)OrkiszewskiSlug (friction term)Duns & RosTransitionDuns & RosAnnular MistIt should be noted that the liquid distribution coefficient (hold-up) is evaluated using the data from the Hagedorn & Brown model. The performance of Orkiszewski correlation is briefly outlined below for the flo
17、w variables considered.应该指出的是,该液体分布系数(?)评估应用数据从Hagedorn和棕色的模型。Orkiszewski相关的性能简要概述了下面的流量不同考虑。Tubing Size. The correlation performs well between 1 and 2 in. tubing sizes. The pressure loss is over predicted for tubing sizes greater than 2 inches.管材的尺寸。相关表现良好1到2归油管大小。压力损失超过预测大小油管大于2英寸。Oil Gravity. At
18、low oil gravities (13-30 API), the correlation over predicts the pressure profile. However, predictions are seen to improve as oil API increases.石油重力。在低油耗(13-30API着重)、相关在预测压力的侧面。然Gas-Liquid Ratio (GLR). The accuracy of Orkiszewski method is very good for GLR up to 5000. The errors become large ( 20%
19、) for GLR above 5000.气液比(GLR)。Orkiszewski精度的方法具有较好的GLR达到5000。变大的错误( 20%)为GLR以上5000。Water-Cut. The correlation predicts the pressure drop with good accuracy for a wide range of water-cuts.Water-Cut。相关预测压降和精度好广泛的water-cuts。Beggs & Brill Cor-relationThe Beggs & Brill correlation is developed for tubing
20、 strings in inclined wells and pipelines for hilly terrain. This correlation resulted from experiments using air and water as test fluids over a wide range of parameters. The performance of the correlation is given below.Beggs和布里尔相关的开发中弦乐油管斜井和管道送丘陵地形。这种关系是使用空气和水从实验测试流体在大范围的参数。相关的性能下面给出。Tubing Size.
21、For the 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 in an over prediction in the pressure loss. 管材的尺寸。的范围内进行试验研究管道尺寸(例如,1到1.5英寸),压力损失是正确的估计。任何
22、进一步增长管道尺寸容易导致超重的压力损失预测。Oil Gravity. A reasonably good performance is obtained over a broad spectrum of oil gravities. 石油重力。一个合理可靠的性能得到了广泛的石油着重论述。Gas-Liquid Ratio (GLR). In general, an over predicted pressure drop is obtained with increasing GLR. The errors become especially large for GLR above 5000.
23、 气液比(GLR)。一般来说,而获得的压降预测GLR增加。尤其当大的错误GLR以上5000。Water-Cut. The accuracy of the pressure profile predictions is generally good up to about 10% water-cut. Water-Cut。压力剖面的准确性预测是一般好water-cut 10%。General Recom-mendations 一般Recom-mendationsIn general, the Orkiszewski and Hagedorn & Brown model are found to
24、perform satisfactorily for vertical wells with or without water-cut, and should therefore be considered equally as the 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 metho
25、d 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 noted that the performance of the multiphase flow models may not always be
26、 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 coul
27、d be used as a guide to eliminate or select a particular correlation in the absence of other relevant information. 一般而言,Orkiszewski和Hagedorn和棕色的模型进行了令人满意地对竖井或有或无water-cut,同样的,因此它们应该被考虑作为第一选择在这样的井里。如前面提到的,Duns和活性氧相关不适用于井,在water-cut,应当避免为这样的情况。Beggs和布里尔方法的适用于斜威尔斯有或没有water-cut的最佳选择,是目前可供与威尔斯。然而,方法也可用于竖
28、井的最后选择。最后,它应该注意的是,研究多相流动模型性能的影响不可能永远完全是由对特定流量变量性能趋势显示。在大多数情况下的表现后,这些模型可以依赖一个相结合的几个这些流量不同考虑。因此,保持这些限制于心,上述讨论可作为指导消除或者选择特定相关在没有其他相关信息。References 1. Beggs, H. D. and Brill, J. P.: .A Study of Two-Phase Flow in Inclined Pipes,. J. Pet. Tech. (May 1973) 607-617.2. Duns, H., Jr. and Ros, N. C. J.: .Vertic
29、al Flow of Gas and Liquid Mixtures in Wells,. Proc. Sixth World Pet. Congress, Frankfurt (Jun. 19-26, 1963) Section II, Paper 22-PD6.3. Espanol, J. H., Holmes, C. S., and Brown, K. E.: .A Comparison of Existing Multiphase Flow Methods for the Calculation of Pressure Drop in Vertical Wells,. SPE 2553
30、 presented at the 44th Annual Fall Meeting of the Society of Petroleum Engineers of AIME, Denver, CO (Sept. 28-Oct. 1, 1969).4. Griffith, P.: .Two-Phase Flow in Pipes,. Special Summer Program, Massachusetts Institute of Technology, Cambridge, Massachusetts (1962).5. Griffith, P. and Wallis, G.B.: .T
31、wo-Phase Slug Flow,. J. Heat Transfer; Trans. ASME (Aug. 1961) 307-320.6. Hagedorn, A. R. and Brown, K. E.: .Experimental Study of Pressure Gradients Occurring During Continuous Two-Phase Flow in Small Diameter Vertical Conduits,. J. Pet. Tech. (Apr. 1965) 475-484.7. Lawson, J.D. and Brill, J.P.: .A
32、 Statistical Evaluation of Methods Used to Predict Pressure Losses for Multiphase flow in Vertical Oilwell Tubing, . J. Pet. Tech. (Aug. 1974) 903-914.8. Orkiszewski, J.: .Predicting Two-Phase Pressure Drops in Vertical Pipe,. J. Pet. Tech. (Jun. 1967) 829-838.9. Vohra, I.R., Robinson, J.R., Brill, J.P.: .Evaluation of Three New Methods for Predicting Pressure Losses in Vertical Oilwell Tubing,. J. Pet. Tech. (Aug. 1974) 829-832.专心-专注-专业