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    • 8. 发明授权
    • Method and device for predicting the flocculation threshold of asphaltenes contained in hydrocarbon mixtures
    • 用于预测含烃混合物中沥青质絮凝阈值的方法和装置
    • US06690453B2
    • 2004-02-10
    • US10067232
    • 2002-02-07
    • Pascal Mougin
    • Pascal Mougin
    • G01N3326
    • G01N21/41G01N33/28G01N33/42
    • Method and device for predicting the flocculation threshold of asphaltenes contained in hydrocarbon mixtures. The method comprises the following stages: determining the refraction index (nA) of several asphaltenes used as reference asphaltenes; determining experimentally, for predetermined thermodynamic conditions, the variation of solubility index (&dgr;) in connection with the refraction index of hydrocarbon constituents including light hydrocarbons and reference asphaltenes; deducing therefrom a correlation relation modelling this variation of solubility index (&dgr;). These preliminary operations being performed, refraction index (nA) of the asphaltenes of the hydrocarbon mixture is determined under the same thermodynamic conditions and by reference to said correlation relation, solubility index (&dgr;) of the asphaltenes of said mixture is deduced therefrom; and from the solubility index of the asphaltenes of said mixture and from a thermodynamic equilibrium model, the flocculation threshold thereof is directly predicted. Applications: fast laboratory determination of asphaltene flocculation risks likely to hinder production and transport of crudes so as to quickly implement solutions intended to prevent them.
    • 用于预测烃类混合物中沥青质絮凝阈值的方法和装置。该方法包括以下阶段:确定用作参考沥青质的几种沥青质的折射率(nA);实验确定,对于预定的热力学条件,溶解度指数的变化 (δ),与碳氢化合物成分(包括轻质烃类和参考沥青质)的折射指数相关;推导出这种溶度指数(delta)变化的相关关系。所进行的这些初步操作,沥青质的折射率(nA) 烃混合物在相同的热力学条件下并通过参考所述相关关系确定,从而推导出所述混合物的沥青质的溶解度指数(delta); 并从所述混合物的沥青质的溶解度指数和热力学平衡模型中直接预测其絮凝阈值。应用:快速实验室测定沥青质絮凝风险可能会阻碍原油的生产和运输,以便快速实施旨在 防止他们
    • 9. 发明授权
    • Method and device for determining the joule-thomson coefficient of a fluid
    • 用于确定流体焦耳系数的方法和装置
    • US06318149B1
    • 2001-11-20
    • US09550203
    • 2000-04-17
    • Pascal MouginRoxane PeumeryGérard MoracchiniJosé Sanchez
    • Pascal MouginRoxane PeumeryGérard MoracchiniJosé Sanchez
    • G01N2500
    • G01N33/2823
    • The invention is a method for determining the Joule-Thomson coefficient of a fluid, expressing the temperature variation in relation to a pressure variation thereof. The fluid is injected at a determined injection temperature into a thin tube (8) (preferably a capillary tube in order to obtain a high pressure drop with reasonable flow rates) which contains a temperature detector (TC1) leading to a pressure drop for the fluid. The temperature variation of the fluid in relation to the injection temperature is measured by means of this temperature detector. The pressure drop undergone by the fluid in tube (8), due to the presence of this temperature detector, is also measured and the Joule-Thomson coefficient is calculated by combination of measurements of the pressure drop and of the temperature variation of the fluid. The method can be applied notably in the field of hydrocarbon production, more particularly hydrocarbons coming from high-pressure and high-temperature reservoirs and in gas lines.
    • 本发明是用于确定流体的焦耳 - 汤姆逊系数的方法,其表示相对于其压力变化的温度变化。 将流体以确定的注射温度注入细管(8)(优选毛细管中以获得具有合理流速的高压降),其包含导致流体压降的温度检测器(TC1) 。 通过该温度检测器测量流体相对于注射温度的温度变化。 还测量了由于存在该温度检测器而由管(8)中的流体引起的压降,并且通过组合压降和流体温度变化的测量来计算焦耳 - 汤姆森系数。 该方法可以显着地应用于烃生产领域,特别是来自高压和高温储层以及气体管线的烃。