Schlumberger Ngi Tool | __full__
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Providing reliable, baseline geological data in wildcat or exploratory wells where subsurface characteristics are entirely unknown.
When planning your next horizontal well, ask your SLB representative: "Is the NGI tool on the BHA?" If not, you are likely drilling blind.
The NGI tool detected a down-dip structural change that was not apparent on the seismic data. The inversion model showed the bit approaching the lower limestone boundary 12 feet early. The team steered aggressively up-hole, avoiding a trip out of the reservoir. Final well data showed 98% net-to-gross (NTG) in the target zone, delivering an IP (Initial Production) 40% above prognosis. schlumberger ngi tool
The software runs a 1D or 3D inversion of the EM data. It creates a visual model of the reservoir showing:
The NGI tool addresses several challenges inherent in legacy pulsed-neutron tools:
: Mud Button measurements used for environmental corrections. Related Technology: Quanta Geo Service : Providing reliable, baseline geological data in wildcat
: Utilizes microresistivity measurements to create high-resolution images of the borehole wall.
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.
The Schlumberger NGI tool boasts several key features that set it apart from other logging instruments: The inversion model showed the bit approaching the
The NGI concept has evolved into commercial services like the Quanta Geo Photorealistic Reservoir Geology Service .
: Micro-electrode rows resolve geological variations down to fractions of an inch.
By the early 2000s, the NGI was largely by more advanced tools: the HNGS for hostile environments, the Elemental Capture Spectroscopy (ECS) tool for detailed mineralogy, and later the LithoScanner platform.
: Telemetry Frame Counter for data synchronization.