Ultrasonic Multi-Channel Viper

High-resolution well casing integrity inspection

Well casing is the main barrier between an operator’s well and everything around it, and it's under attack from both sides. CO₂, chlorides and other corrosives in produced fluids eat at it from the inside. Formation water works on it from the outside. Most operators only find out when metal loss has already turned into a leak, a workover or a regulator's attention.

The UT-MC Viper finds corrosion before it gets that far. Run on wireline or slickline, it measures wall thickness from inside the casing and shows operators where metal loss is and whether it's internal or external, with minimal disruption to production.

Zero non-productive time

Inspectors work within the tight deadlines of well casing operation

Rapid reporting times

Preliminary reports in 2 hours & final reports within 72.

Integrates with other methods

Incorporate CBL, GR, and other integrity interventions in a single inspection.

Prevents premature well casing repairs

Supported by 1 × 1 mm resolution & 0.3 mm wall thickness measurements

Technical Capabilities

Specification	Metric
Sampling resolution	1 × 1 mm
Depth sizing accuracy	± 0.3 mm
Nominal casing size	5-7-in.*
Maximum operating pressure	100 bar
Maximum operating temperature	70°C
Inspection Speed	Up to 80 m/min

Crack Threats Addressed

Pitting & Corrosion Cluster

Internal Corrosion

Complex Corrosion

• General and localized metal loss and corrosion, internal and external
• Acute corrosion, including pinholes
• Ovality and geometric anomalies
• Through-wall penetration

Additional Pipeline Threats Addressed

Crack

Geometric Defects

Operational Capabilities

Short Traps

1.5D Bends

• Runs in line with planned logging runs — no dedicated intervention
• Hand-loaded onto wireline or slickline
• Runs alongside existing cement bond log and gamma ray operations
• Tool sizes and higher-rated builds available upon request
• No non-productive time (NPT) from slow inspections

Testing and Qualification

Engineers test every UT-MC Viper against known internal and external defects before it ships. In-house fabricators can build test sections to match an operator's casing, and runs can be set up to match field conditions such as pressure and logging speed—proving the tool in conditions close to what it will face in the well. Clients are welcome to watch the testing and review the data at Dexon's X-Base facility in Rayong, Thailand.

Need a well-casing inspection partner?

Tell us about the corrosion threats, casing program, completion details, well fluid, depth of interest, and any previous inspection history. We will assess your requirements, confirm the right tool fit, and build a practical inspection scope.