Patent ID: 8805617
Filing Date: 2014-08-12
Classification: E21B

Abstract:
1. A method for characterizing formation fluid in an earth formation surrounding a borehole drilled into the earth formation, the method comprising: drawing formation fluid into a flowline of a borehole tool disposed at a given location within the borehole, wherein the formation fluid comprises fluid contaminated with mud filtrate; analyzing the formation fluid in the flowline to derive first data characterizing properties of the formation fluid in the flowline, the first data including data representing temperature and pressure of the formation fluid in the flowline; deriving, via a processor, second data characterizing a plurality of properties of the formation fluid at the temperature and pressure of the formation fluid in the flowline, the second data based on the first data, and the second data characterizing properties of the formation fluid that include effects from contamination of the mud filtrate in the formation fluid; and deriving, via the processor, third data characterizing the plurality of properties of the formation fluid at the temperature and pressure of the formation fluid in the flowline, the third data based on the second data, and the third data characterizing properties of the formation fluid where the effects from contamination of the mud filtrate in the formation fluid have been removed; wherein the first data, the second data, and the third data are derived without employing analysis of formation fluid from another location within the borehole.