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The Series 4239 In-Line Litho-Density Tool sub uses two focused density detectors to computer borehole compensated density real time while logging.  This tool also measures the amplitude of the returning gamma pulses using a photoelectric reader in order to determine lithology directly.  It can distinguish between sandstone, limestone, dolomite, shale, and other rocks in the form of an additional logging curve.  Additionally, the tool also records caliper readings.  It requires the use of the 4000 Stack Gamma Ray Tool Sub, which provides the needed telemetry, and is compatible with all other Express Stack™ Tools except for the 4841(DIL).  


Fully downhole digital
Quick automatic setup, unique tool identification
Requires assembly at well site
Can be customized to your specific needs


Properties Measured:

  1. Caliper: Motorized, uphole actuated 33.02cm (13 in.)
    Offset(measured from top of Gamma Ray Tool Sub) 589.79(232.2 in.)

  2. Far Density: x 10.16cm(0.875 x 4.0 in) 35.8cm(14.1 in.) spacing Offset:630.43cm (248.2 in.)

  3. Compensated Density: Cdl (compensated density log)
    Offset: 630.43cm (248.2 in.)

  4. Compensation: Comp(compensation) Offset: 630.43 cm(248.2 in.)

  5. Near Density 2.2 x 3.2 cm(0.875 x 1.25 in.) 20cm(7.9 in.) spacing
    Offset: 638.25cm(251.28in.)

  6. Photoelectric x 3.2cm(0.875 x 1.25 in.) 20cm (7.9 in.) spacing
    Offset: 638.25cm(251.28 in.)

  7. Density Source


Length: 348.13cm (137.06 in.)
Temperature: 125C (257F)
Diameter: 6.35cm (2.5 in)
Pressure: 350kg/cm2 (5000 psi)
Weight: 58 kg (128 lbs.)
Logging Speed: 9m/min. (30ft/min.)

Tool #:4239

4239 Product Description

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