多相流体模型应用的范围(共8页).doc
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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
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