Method of Estimating Uncontaminated Fluid Properties During Sampling

摘要

According to certain embodiments, formation fluid properties, such as gas-oil ratio (GOR), formation volume factor (FVF), and density, may be measured at multiple times during sampling. In one embodiment, data representing the measured properties is analyzed and a characteristic of interest is determined through extrapolation from the analyzed data. Various other methods and systems are also disclosed.

主权项

1. A method comprising:
sampling formation fluid within a well; determining formation fluid properties for the sampled formation fluid through downhole fluid analysis, wherein determining formation fluid properties for the sampled formation fluid includes determining first and second properties of the sampled formation fluid at multiple sampling times and the first property varies with contamination of the sampled formation fluid; analyzing data representing the determined first and second properties; and determining a characteristic of interest of the sampled formation fluid through extrapolation from the data representing the determined first and second properties.