Project results
On each well the RCI instrument was used to obtain multiple validated formation pressure measurements, and collect quality controlled multiple hydrocarbon samples over several reservoir zones. Pressures were validated using the instrument’s repeat draw down capability. During collection, each of the formation fluid samples was evaluated downhole for quality and contamination in order to ensure a truly representative formation fluid sample was captured. This was done with a combination of capabilities and incorporated technologies including: 

• SampleView, a near-infrared fluid analyzer for enhanced resolution and detailed spectrum analysis of downhole fluid for real time sample quality prediction 

• Phase separation tests 

• Limitless pre-flush volume to clean up the sample 

• Resistivity and fluid capacitance sensors for real time down hole fluid characterization and monitoring of sample clean up 

• Over-pressuring of the collected samples to maintain them in a single phase. 

The RCI’s capabilities and design have been extended and enhanced during the project in cooperation with the operator. Developments included introduction of the Multi Tank Carrier Module and SampleView. Several modules of the six tank carrier can be combined to enable up to 24 samples to be taken per run, greatly reducing the cost of formation sampling. The Sampleview module, combined with in-situ phase pressure measurements and other fluid quality sensors, allow the clean up of samples to be determined with confidence, improving collected sample quality. 

Benefits & Value 
The Reservoir Characterization Instrument has been used to catch multiple samples in a single run. This was especially useful for PVT analysis for compartmentalization review. This technology is critical to reduce well acquisition costs. Using the Baker Atlas Reservoir Characterization Instrument with the addition of the MultiTank carrier system and SampleView, up to 14 clean samples per trip were collected delivering a total 11,160 cc of fluid at in-situ reservoir conditions. On each typical well this was estimated to have saved the operator over $2.5 million in reduced well testing expenses and $300,000 in rig time.