Well Workover & Intervention Inspection Services That Reduce Risk and Protect Well Integrity
Well workover and intervention activities place some of the highest demands on equipment integrity. Whether supporting routine maintenance, remedial operations, or unplanned recovery work, failure is costly — in time, safety exposure, and operational impact.
OTI provides well workover and intervention inspection services designed to help operators deploy tools and assemblies with confidence, ensuring they are fit for purpose before entering the wellbore.
Our inspection services focus on early identification of wear, defects, and non‑compliance, reducing the risk of downhole failure, non‑productive time, and unplanned intervention.
Inspection That Supports Safe, Efficient Intervention Operations
Intervention tools are routinely exposed to:
- high mechanical loads
- cyclic fatigue
- corrosive environments
- complex deployment and retrieval conditions
OTI’s inspection approach is designed to ensure tools perform as intended when conditions are least forgiving, providing decision‑makers with clear information before tools are run.
Fishing Tools Inspection
Fishing operations are inherently high‑risk, relying on precisely engineered tools to recover stuck or lost equipment from the wellbore.
OTI inspects fishing tools to confirm they are field‑ready and capable of withstanding recovery loads, reducing the risk of tool failure during critical operations.
Inspection scope includes:
- visual and dimensional checks for wear, thread damage, straightness, and deformation
- Magnetic Particle Inspection (MPI) for surface and near‑surface cracking
- Ultrasonic Testing (UT) for subsurface defects and fatigue
Tools inspected include:
- overshots and spears
- junk baskets
- fishing jars
- wash pipe assemblies
Outcome: Confidence that fishing tools can perform reliably during critical recovery operations.
Coiled Tubing Inspection
Coiled tubing is subject to repetitive bending, fatigue cycling, corrosion, and mechanical damage — making rigorous inspection between runs essential.
OTI’s coiled tubing inspection services support safe re‑deployment decisions and early identification of degradation trends.
Inspection services include:
- Magnetic Particle Inspection (MPI) for surface and near‑surface cracking
- ultrasonic thickness measurement for wall loss
- Electromagnetic Inspection (EMI) to identify localised wall thinning and internal defects
- visual and surface inspection for corrosion, pitting, and mechanical damage
- coating integrity checks
- Dye Penetrant Testing (PT) for non‑magnetic materials
Benefit: Early detection of fatigue and corrosion, reducing the risk of string failure and unplanned downtime.
Liner Hangers Inspection
Liner hanger systems are critical to zonal isolation and overall well integrity. Undetected defects or dimensional issues can result in sealing failure or loss of load‑bearing capacity.
OTI inspects liner hanger assemblies to ensure deployment readiness and functional reliability.
Components inspected include:
- hangers and packers
- setting tools
- tie‑back equipment
Inspection services include:
- dimensional and conformance checks
- thread gauge verification
- material verification and hardness testing
- NDT methods (MPI, UT) on welds and critical load‑bearing areas
Goal: Ensure correct deployment, sealing performance, and long‑term structural integrity.
Completions Equipment Inspection
Completion equipment must perform reliably to enable safe and controlled hydrocarbon production. Inspection failures at this stage can result in costly intervention or production loss.
OTI provides inspection services for both upper and lower completion equipment, including:
- packers, plugs, and sleeves
- safety valves and control lines
- perforating guns and flow control devices
Inspection process includes:
- visual and functional testing (pressure cycling, actuation checks)
- thread inspection and drift testing
- ultrasonic and MPI testing for structural integrity
- compatibility and fitment verification between components
End result: Confidence that completion assemblies will perform as designed under downhole conditions.
Inspection Delivered by Personnel Who Understand Intervention Risk
All inspections are carried out by experienced, certified technicians who understand how inspection outcomes affect:
- intervention planning
- operational risk
- tool reliability
- cost and schedule exposure
Our focus is not just inspection compliance – but supporting confident decisions in high‑risk well operations.