Sonar Surveying

Sonar Surveying System

Sonar technology was originally developed for detecting and locating submerged objects in water by means of the sound waves they reflect or produce.

Surface Control Equipment

Computer system, custom software-for survey control and report generation, power supply, and interface module (for sonar probe).

Subsurface Sonar Probe

State-of-the-art electronics, magnetic compass, gyro compass, velocimeter, rotating and tilting mechanism, and acoustic transducer. The transducer can tilt to +/- 90 degrees, insuring complete imaging of the cavern.

Diameter: 3.5 inches
Length: 72 inches (add 36 inches if centralizer is used)
Weight: 85 pounds (add 10 pounds if centralizer is used)
Maximum operating temperature: 150 degrees F
Maximum operating pressure: 6000 p.s.i.
Range accuracy: +/- 0.5%
Range: Minimum=1 foot Maximum=900 feet
Gyro accuracy: <1 degree drift/hour

Sonar Measurements Through Pipe

One pipe: <600 ft. radius
Two pipes: <400 ft. radius
One pipe and LPG: <200 ft. radius
Range accuracy dependant upon the
condition of the pipe (scale, corrosion).

Sonar Measurement in Gas

Natural Gas under pressure (min 1500 p.s.i.) up to 300 ft.
Sonar Measurement in Crude Oil: Up to 400 ft.

Requirements for Sonar Operation

Supplied by Sonarwire: Computer system, subsurface probe, and printer.

Additional equipment required: Wireline truck with a single-conductor wireline, Gearhart connector, and 120 vac power source. Wireline specifications are 7/32 in. – 16,000 ft. or 5/16 in. – 22,000 ft.