Slimhole Tools                  Standard Tools

Slimhole Tools 

The OSG slimhole tool set covers basic geophysical logging parameters:

• electrical resistivity (dual laterolog)
• sonic velocity (two receiver, one transmitter)
• natural gamma spectrum (full spectrum SGR)
• total gamma
• 4-arm caliper, borehole orientation, structural data (4-arm dipmeter)
• magnetic field (magnetometer inside dipmeter)
• magnetic susceptibility
• acoustic borehole wall images (televiewer)
• mud parameters (temperature, pressure, resistivity)
• fluid samples
• seismics (borehole geophone chain)

OSG does not operate tools with nuclear sources!  All tools are rated for a minimum of 150 °C and 80 MPa, except for the televiewer (70 °C/20 MPa), and can be used in hole sizes as small as 75 mm. The maximum borehole size differs for each tool. These tools are best run on our special slimhole logging winch but can also be run on any logging winch system with at least a 4-conductor cable.

Specifications (PDF)

Photos

Slimhole equipment as it is packed for transportation (excl. winch, fluid sampler and geophone chain). In front are the gray tool boxes. The aluminum boxes contain all surface equipment and tool accessories.

Standard Tools

OSG uses GFZ owned wireline logging tools with standard oilfield dimensions from different manufacturers. 

The OSG standard tool set covers basic geophysical logging parameters:

• electrical resistivity (dual induction & micro)
• sonic velocity (two receiver, two transmitter)
• natural gamma spectrum (full spectrum SGR)
• total gamma
• mud temperature, pressure and resistivity (mud parameter tool)
• seismics (3C borehole geophone)
• spontaneous & redox potential

Tool ratings are at least 150 °C and 100 MPa, see specifications for details.

Specifications (PDF)

Photos

Set of most frequently deployed standard tools: 

Sonic, Mud Parameters & Gamma Spectrum

For further information please contact: Jochem Kueck