Multi-zone formation fluid evaluation system and method for use of same

A method of evaluating multiple zones during a single trip into a wellbore, the method comprising:

• interconnecting a formation fluid evaluation assembly within a tubular string;
• positioning the formation fluid evaluation assembly in the wellbore proximate one zone of the multiple zones and isolating the zone;
• unloading fluid from the isolated zone into the tubular string;
• receiving reservoir fluid from the isolated zone into the interior of the tubular string;
• determining a characteristic of the reservoir fluid received from the isolated zone;
• and
• performing the positioning, isolating, unloading, receiving and determining steps for additional zones of the multiple zones in a single trip.

A formation fluid evaluation system interconnected within a tubular string for operation in a wellbore having multiple zones, the evaluation system comprising:

• a set of straddle packers that isolates one zone of the multiple zones;
• a test valve disposed between the straddle packers, the test valve receiving fluid from the isolated zone into the interior of the tubular string;
• a fluid unloading assembly positioned uphole of the straddle packers, the fluid unloading assembly operable to draw fluid from the isolated zone into the tubular string through the test valve in response to a drive fluid circulated down the tubular string;
• and
• a formation evaluation instrument disposed within the tubular string that determines a characteristic of the fluid received from the isolated zone,
• wherein the evaluation system is operable to sequentially isolate individual zones of the multiple zones and evaluate fluid received from the individual zones in a single trip.

A method of evaluating multiple zones during a single trip into a wellbore, the method comprising:

• interconnecting a formation fluid evaluation assembly within a tubular string;
• positioning the formation fluid evaluation assembly in the wellbore proximate one zone of the multiple zones and isolating the zone;
• pumping a drive fluid down the tubular string;
• unloading fluid from the isolated zone into the tubular string;
• receiving reservoir fluid from the isolated zone into the interior of the tubular string;
• determining a characteristic of the reservoir fluid received from the isolated zone;
• and
• repeating the positioning, pumping, unloading, receiving and determining steps for additional zones of the multiple zones in a single trip.