It utilizes multiple frequencies (e.g., F1 and F2) to optimize signal-to-noise ratios across varying mud and formation types.
In this stack, the NGI provides the local formation data at the bit, while the Periscope looks 15-20 feet around the borehole. The combination gives you "micro" precision (NGI) and "macro" vision (Periscope).
The NGI pad design is designed for better contact with the borehole wall, reducing artifacts and improving signal-to-noise ratios, resulting in clearer, more reliable images. schlumberger ngi tool
: Designed to record data while moving both up and down the borehole. Downlogging helps reduce "stick-slip" effects that often blur images, saving rig time. Photorealistic Visualization
: Newer services like the Quanta Geo Photorealistic Imager offer even higher borehole coverage (up to 98% in 8-inch holes) and allow for faster logging speeds up to 3,600 ft/h. It utilizes multiple frequencies (e
The NGI is typically run as part of an integrated wireline logging platform, such as the Platform Express
: Features eight independent pads mounted on dual arms, allowing for consistent application against the borehole wall even in irregular or inclined holes. High-Resolution Data : Equipped with 192 microelectrode buttons The NGI pad design is designed for better
: Identifies faults, fractures, and the spatial orientation (dip and strike) of geological layers.