Omni Directional Thickness (ODT)

2-7/8” Omni Directional Thickness with TEMP (ODT/ Temp) measures the average thickness of the casing.

SPECIFICATIONS

MAX TEMPERATURE

350°F (175 °C)

MAX PRESSURE

15,000 psi (103.4 MPa)

MAKE-UP LENGTH

33.5” (851 mm)

TOOL MAIN BODY OD

2-9/32” (58 mm)

MAX TOOL OD

2-7/8” (73 mm)

TOOL WEIGHT

33 lb (15 kg)

LOGGING SPEED

29.5 ft/min (9 m/min)

REC BORE HOLE FLUID

ALL

DETAILS

The Omni Directional Thickness Tool(ODT) measures the phase shift of an induced magnetic field in the pipe that surrounds the tool over a one foot vertical interval. The phase shift is affected by the magnetic properties of the casing material and is directly proportional to the thickness of the casing.

The tool runs simultaneously with the Hotwell Multifinger Caliper(MFC), allowing real time measurement of the pipe internal diameter and average thickness. The tool also incorporates an internal temperature probe. The ODT tool can also be run alone in analog mode. The ODT outputs one raw thickness signal, which is proportional to the average thickness of the surrounding pipe. The ODT measures this signal, disregarding the horizontal distribution of the thickness. This means that in the presence of local anomalies, the ODT does not differentiate local damage from overall corrosion.

Application
Measurement of the average Casing wall thickness and detection of variations due to physical deformation or corrosion to the inside or outside of the pipe.