The tool string operates as a sophisticated, multi-stage laboratory in a borehole, using the following components:
: Collects detailed parameters including voltage return, amplitude, phase, and cartridge gains across multiple pads (Pads A, B, C, and D).
Providing reliable, baseline geological data in wildcat or exploratory wells where subsurface characteristics are entirely unknown. schlumberger ngi tool
The primary value proposition of the NGI tool is its position . In conventional LWD, there is a significant lag—spatially and temporally—between the bit cutting rock and the sensors reading it. By the time the gamma ray reading reaches the surface, the bit may have already drilled tens of feet into an undesired zone.
: Specifically designed for oil-based mud (OBM) environments where traditional imagers often fail. The tool string operates as a sophisticated, multi-stage
: The tool is designed to operate reliably under high-pressure and high-temperature (HPHT) conditions common in deepwater and unconventional wells.
The NGI is designed for efficient deployment and faster logging speeds without compromising image quality. Conclusion In conventional LWD, there is a significant lag—spatially
The tool features multiple articulating pads pressed against the borehole wall. These pads are equipped with arrays of micro-electrodes that emit the current and record the returning signals.
The Schlumberger NGI tool has been successfully deployed in various field applications worldwide. Some notable case studies include:
: It provides high-resolution images with a measurement depth of approximately 0.2 inches