A precision wide angle lens and a CMOS camera assembly permit the OPTV38 and OPTV52 probes to capture a high-definition video image of the borehole wall in a variety of horizontal and vertical resolutions.
The resulting image data is digitised in the probe and combined with orientation sensor parameters for transmission to the surface.
The orientated image log provides a wealth of information relevant to a wide variety of applications. These include fracture detection and analysis, bedding or foliation dip and direction, lithological characterisation and core sample orientation.
OPTV 38&52 SPECIFICATIONS
Highlights
✓ Wide angle 360° lens
✓ Horizontal resolution up to 1440 pixels
✓ Throughput up to 60 frames per second
✓ High pressure resistant
✓ Log speed until 3.6 m / min
✓ Vertical resolution unlimited
✓ Depth up to 2000m
Technical Specifications
✓ Diam : 38mm/52mm
✓ Weight : 7Kg
✓ Housing : titanium and brass non-magnetic
✓ Length : 1630 mm
✓ Temp / pressure max : 60°C/100 bar
Sensors Parameters
✓ Camera sensor : 1 280 x 1 024 pixels CMOS
✓ Horizontal definition : 360/540/720/900/1080/1260/1440 pixels
✓ Orientation : triple magnetometers / accelerometers
✓ Picture format : 24 bit RGB
✓ Vertical definition : unlimited (defined to logging speed)
✓ Orientation accuracy : ± 0.5° dipping ; ± 1° azimuth
Options And Accessories
✓ Gamma ray sensor: ø25 x 50 mm NaI(Tl) crystal
✓ Centralisers non-magnetic
✓ Image reference calibrator
✓ High pressure version : ø62 mm/200 bar (± 2 000 m)
✓ Supplementary sinker weight
Borehole Conditions
✓ Hole dry or filled with clear water
✓ The probe must be centered
✓ Recommended diameter range for OPTV38 : 60 to 300 mm
✓ Recommended diameter range for OPTV52 : 75 to 600 mm
