: The tool’s software automatically compensates for the "signal noise" caused by the borehole size, mud type, and the "skin effect" (electromagnetic interference). Key Benefits for Reservoir Analysis
Last technical review: based on Schlumberger public documentation and field data as of 2025. For specific job planning, consult the current NGI tool specifications and your operations geologist.
| Tool | Manufacturer | Key Difference | |------|--------------|----------------| | Schlumberger NGI | Schlumberger | Dedicated near-bit gamma imaging | | Baker Hughes NaviTrak™ | Baker Hughes | Includes near-bit resistivity option | | Halliburton Sperry Drilling Geo-Pilot® | Halliburton | Integrated with rotary steerable; gamma only | | Weatherford Radiance™ | Weatherford | Spectral (K/U/Th) near-bit capability |
Fully combinable with other Schlumberger wireline tools, including gamma ray, neutron porosity, density, and sonic tools, allowing for a comprehensive, single-run logging suite. schlumberger ngi tool
Calculating the exact ratio of water to oil/gas within the pore spaces to estimate total recoverable reserves.
Traditional WBM Tools (FMI) --> Direct galvanic contact (Fails in OBM) First-Gen OBM Tools (OBMI) --> Early micro-laterolog voltage pads Next-Gen OGI/NGI Tools --> High-frequency capacitive coupling & multi-pad articulation Key Technical Specifications & Architecture Borehole Imaging Technology | SLB
For modern geoscientists and petrophysicists, “Schlumberger NGI tool” is an ambiguous search. No current product line uses that acronym. However, legacy scientific publications and well logs reveal the NGI as a —a spectral gamma‑ray tool used in the 1980s–1990s. : The tool’s software automatically compensates for the
: It can be combined with other integrated wireline logging platforms like the Platform Express for "triple-combo" or "quad-combo" logging in a single run, reducing rig time and operational costs. Operational Benefits Quanta Geo Photorealistic Reservoir Geology Service | SLB
Thus, the NGI can compute independently of salinity.
A typical NGI log presentation includes: | Tool | Manufacturer | Key Difference |
The Quanta Geo service's engineering sets a new industry benchmark for OBM imaging. Its key features include:
Historically, standard logging tools measured basic physical properties like natural radioactivity, density, porosity, and resistivity. To get a direct reading of the formation's chemical composition—its mineralogy —a more advanced approach was needed. The was developed to directly measure the elemental makeup of the rock.
: Four to eight multi-button pads conform directly to uneven borehole walls.
The NGI tool uses three scintillation detectors. BGO crystals are chosen for their high stopping power (efficiency) at high gamma ray energies.
: The tool’s software automatically compensates for the "signal noise" caused by the borehole size, mud type, and the "skin effect" (electromagnetic interference). Key Benefits for Reservoir Analysis
Last technical review: based on Schlumberger public documentation and field data as of 2025. For specific job planning, consult the current NGI tool specifications and your operations geologist.
| Tool | Manufacturer | Key Difference | |------|--------------|----------------| | Schlumberger NGI | Schlumberger | Dedicated near-bit gamma imaging | | Baker Hughes NaviTrak™ | Baker Hughes | Includes near-bit resistivity option | | Halliburton Sperry Drilling Geo-Pilot® | Halliburton | Integrated with rotary steerable; gamma only | | Weatherford Radiance™ | Weatherford | Spectral (K/U/Th) near-bit capability |
Fully combinable with other Schlumberger wireline tools, including gamma ray, neutron porosity, density, and sonic tools, allowing for a comprehensive, single-run logging suite.
Calculating the exact ratio of water to oil/gas within the pore spaces to estimate total recoverable reserves.
Traditional WBM Tools (FMI) --> Direct galvanic contact (Fails in OBM) First-Gen OBM Tools (OBMI) --> Early micro-laterolog voltage pads Next-Gen OGI/NGI Tools --> High-frequency capacitive coupling & multi-pad articulation Key Technical Specifications & Architecture Borehole Imaging Technology | SLB
For modern geoscientists and petrophysicists, “Schlumberger NGI tool” is an ambiguous search. No current product line uses that acronym. However, legacy scientific publications and well logs reveal the NGI as a —a spectral gamma‑ray tool used in the 1980s–1990s.
: It can be combined with other integrated wireline logging platforms like the Platform Express for "triple-combo" or "quad-combo" logging in a single run, reducing rig time and operational costs. Operational Benefits Quanta Geo Photorealistic Reservoir Geology Service | SLB
Thus, the NGI can compute independently of salinity.
A typical NGI log presentation includes:
The Quanta Geo service's engineering sets a new industry benchmark for OBM imaging. Its key features include:
Historically, standard logging tools measured basic physical properties like natural radioactivity, density, porosity, and resistivity. To get a direct reading of the formation's chemical composition—its mineralogy —a more advanced approach was needed. The was developed to directly measure the elemental makeup of the rock.
: Four to eight multi-button pads conform directly to uneven borehole walls.
The NGI tool uses three scintillation detectors. BGO crystals are chosen for their high stopping power (efficiency) at high gamma ray energies.