Schlumberger Ngi Tool Link

For decades, the industry has relied on a suite of logging-while-drilling (LWD) and wireline tools to map the subsurface. Among these, one name stands out when the target is thin-bedded reservoirs, anisotropic formations, or complex structural traps: .

– The service has been field‑tested in coalbed methane, heavy oil, and shale plays in North America and Australia. In coalbed methane, the sharp gamma ray contrast between coal (very low gamma) and adjacent shale makes iPZIG images ideal for staying within the coal seam.

Capable of maintaining high-definition data acquisition at speeds up to 3,600 ft/h, significantly reducing rig time compared to older imaging systems. Stick/Slip Mitigation:

The NGI tool incorporates several mechanical and electronic enhancements over previous generations: Sensor Configuration: schlumberger ngi tool

The flagship technology is the iPZIG at‑bit inclination, natural gamma ray, and imaging service *—the industry’s first image gamma and inclination tool positioned directly behind the drill bit.

The is a wireline logging tool developed by Schlumberger (now part of SLB) designed to address a critical challenge in petrophysics: evaluating low-resistivity, low-contrast (LRLC) pay zones , particularly those associated with gas-bearing reservoirs.

| Feature | Detail | |---------|--------| | | Integrated into the bottom hole assembly (BHA), typically 1–2 m behind the bit | | Sensors | Multiple azimuthally oriented scintillation detectors (usually 2 to 16 sectors) | | Measurement | Natural gamma ray API (total count rate) | | Azimuthal Coverage | 360° around the tool | | Data Transmission | Real-time via mud pulse telemetry (compensated for limited bandwidth) and high-resolution memory recording | | Temperature Rating | Up to 150°C (302°F) | | Pressure Rating | Up to 25,000 psi (172 MPa) | | Rotation Speed | Optimal from 60–200 RPM | For decades, the industry has relied on a

Because the NGI measures inclination at the bit, it helps identify "bit walk" (the tendency of a bit to turn left or right naturally). This allows directional drillers to correct the trajectory proactively, resulting in a smoother wellbore and less tortuosity.

(when combined with density/neutron)

For an operator, the value of natural gamma imaging translates directly to : In coalbed methane, the sharp gamma ray contrast

: Because the NGI uses magnetometers for azimuth, it can be affected by nearby metallic equipment (casing, drill pipe) or magnetized formations. In such cases, a GPIT (General Purpose Inclinometry Tool) or gyroscopic tool may be preferred. Quanta Geo Photorealistic Reservoir Geology Service | SLB

Schlumberger NGI Tool: Revolutionizing Borehole Imaging in Complex Environments