Mount Sopris Instruments

40LGR

Gamma + SP/SPR

Standalone combination probe utilizing mudplug

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Description

The 40LGR-1000 Gamma, SP, and SPR probe is the most fundamental probe used in hydrogeological studies, lithology work, uranium exploration, and general borehole formation data. The totally digital probe combination measures single point resistance, self-potential, and natural gamma in two borehole passes. This probe operates with the Matrix digital logger and uses the latest LoggerSuite logging software.

The 40LGR-1000 is a standalone tool. Unless identifying screened intervals and joints, single point resistance and self-potential measurements are designed for surveying open (uncased) fluid-filled boreholes. Gamma measurements can be taken in any borehole environment.

Applications

  • Bed boundary analysis
  • Facies changes
  • Quantitative geological formation properties
  • Identification of Hydrostratigraphic units
  • Aquifer thickness and Water quality
  • Hydrocarbon intervals, Ore body zones, In-situ Uranium assay
  • Fluid contaminant monitoring, Soil horizons, Grain size estimation

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40LGR — Gamma + SP/SPR — Standalone combination probe utilizing mudplug

Technical Specifications

Operating Conditions

Natural Gamma can be used in any borehole conditions.

For SP and SPR measurements, the following conditions apply:

  • Borehole Fluid:

    • Water
    • Mud

  • Casing:

    • Uncased

  • Centralization

    • Not Necessary

  • Isolation Bridle

    • Required for

Specifications

  • Diameter: 43 mm (1.7 in.)
  • Length: 1.12 m (44 in.)
  • Weight: 4 Kg (8.8 lbs.)
  • Max. Temp.: 70ºC (158ºF)
  • Max. Pressure: 200 bar (2900 psi)

Natural Gamma Sensor: Sodium Iodide Crystal

Gamma Range: 0 to 100,000 cps/API

Gamma Accuracy: 1%

Gamma Resolution: 0.02%

Sensors: Stainless steel electrodes

SPR Range: 0 to 10,000 Ohms

SPR Accuracy: 1%

SPR Resolution: 0.02%

SP Range: ± 1,500 mVDC

SP Accuracy: 1%

SP Resolution: 0.04%

Features & Benefits

  • Can log resistance and gamma measurements with one tool.
  • Wide range of applications- from hydrogeology to mining to hydrocarbons
  • Ultra slimline and easy one-person operation
  • Fully downhole digital, functions easily on longer wirelines
40LGR

Related Products

  • 40GRP Product Page

    Gamma + Short/Long Resistivity + SP/SPR

Related Shop Items

  • Mud Plug cable (not used with QuickLink tools)
    0500K-2269 Shop Item

    Mud Plug cable (not used with QuickLink tools)