DETERMINING FLUID COMPOSITION FROM FLUID PROPERTIES

摘要

A method for determining the composition of a fluid contamination (14) by using measured properties of the fluid (10) with the steps of selecting a fluid property at a series of specific time intervals (22) and plotting the wellbore measured fluid property as a function of the selected fluid property, and plotting the effected measured fluid property using the functions of the wellbore fluid compositions in an arbitrary set of unit, and with the steps of allowing the in-situ qualitative equation of the wellbore fluid composition with a known linear relationship to the wellbore fluid composition (10), and with the steps of using the wellbore fluid density (14) to find the endpoints of the endpoints of the wellbore fluid contamination and using the endpoint data to plotting the wellbore measured contamination properties with the steps of performing a qualities evaluation of the wellbore fluid contamination properties with the steps of performing a qualities evaluation of the wellbore fluid contamination composition (36).