公开(公告)号：US20090143992A1

公开(公告)日：2009-06-04

申请号：US12277262

申请日：2008-11-24

申请人： GO FUJISAWA ,  CHEE KIN KHONG ,  OLIVER C. MULLINS

发明人： GO FUJISAWA ,  CHEE KIN KHONG ,  OLIVER C. MULLINS

IPC分类号： G01V1/40

CPC分类号： G01N33/2823

摘要： Methods and apparatus to determine a concentration of nitrogen in a downhole fluid are described. An example apparatus to determine a concentration of nitrogen in a downhole fluid includes a fluid measurement unit to measure a first fluid composition and a density of at least a hydrocarbon and carbon dioxide in a sample of the downhole fluid. Additionally, the example apparatus includes one or more sensors to measure at least a pressure and a temperature of the sample. Further, the example apparatus includes a processing unit to determine a first theoretical density based on at least the first fluid composition, the temperature, and the pressure the sample. Further still, the example apparatus includes an analyzer to determine a first difference between the density of at least the hydrocarbon and the carbon dioxide in the sample and the first theoretical density. The first difference is associated with a concentration of nitrogen in the sample.

摘要翻译： 描述了确定井下流体中的氮浓度的方法和装置。 确定井下流体中的氮浓度的示例性装置包括测量井下流体样品中的第一流体组成和至少一种烃和二氧化碳的密度的流体测量单元。 另外，该示例性装置包括用于测量样品的至少压力和温度的一个或多个传感器。 此外，该示例性装置包括处理单元，该处理单元至少基于第一流体组成，温度和样品的压力确定第一理论密度。 此外，示例性装置包括分析器，用于确定样品中至少烃和二氧化碳的密度与第一理论密度之间的第一差异。 第一个差异与样品中的氮浓度有关。

公开(公告)号：US08032303B2

公开(公告)日：2011-10-04

申请号：US12277262

申请日：2008-11-24

申请人： Go Fujisawa ,  Chee Kin Khong ,  Oliver C. Mullins

发明人： Go Fujisawa ,  Chee Kin Khong ,  Oliver C. Mullins

IPC分类号： G01V1/40

CPC分类号： G01N33/2823

摘要： Methods and apparatus to determine a concentration of nitrogen in a downhole fluid are described. An example apparatus to determine a concentration of nitrogen in a downhole fluid includes a fluid measurement unit to measure a first fluid composition and a density of at least a hydrocarbon and carbon dioxide in a sample of the downhole fluid. Additionally, the example apparatus includes one or more sensors to measure at least a pressure and a temperature of the sample. Further, the example apparatus includes a processing unit to determine a first theoretical density based on at least the first fluid composition, the temperature, and the pressure the sample. Further still, the example apparatus includes an analyzer to determine a first difference between the density of at least the hydrocarbon and the carbon dioxide in the sample and the first theoretical density. The first difference is associated with a concentration of nitrogen in the sample.

摘要翻译： 描述了确定井下流体中的氮浓度的方法和装置。 用于确定井下流体中的氮浓度的示例性装置包括测量井下流体样品中的第一流体组成和至少一种烃和二氧化碳的密度的流体测量单元。 另外，该示例性装置包括用于测量样品的至少压力和温度的一个或多个传感器。 此外，该示例性装置包括处理单元，该处理单元至少基于第一流体组成，温度和样品的压力确定第一理论密度。 此外，示例性装置包括分析器，用于确定样品中至少烃和二氧化碳的密度与第一理论密度之间的第一差异。 第一个差异与样品中的氮浓度有关。