BHA Inspection Services That Protect Drilling Performance and Reduce NPT
The Bottom Hole Assembly (BHA) is one of the highest‑risk areas of any drilling operation. It carries the tools responsible for steering, weight transfer, pressure control, and down-hole performance. In addition, when something fails, the cost is immediate.
OTI provides BHA inspection services designed to help drilling and well teams reduce non‑productive time, avoid tool failures, and make confident run / re‑run decisions before and after deployment.
Our focus is not just inspection compliance, but protecting drilling efficiency and operational safety.
What BHA Inspection Actually Protects
BHA components operate under extreme mechanical stress, cyclic loading, torque, vibration, and fatigue. Undetected damage can lead to:
- downhole failures
- fishing operations
- sidetracks
- unplanned downtime
- increased safety exposure
Effective BHA inspection is about early identification of risk, not just passing checks.
OTI’s inspection approach is designed to give drilling teams clear visibility of tool condition, so decisions are based on reliable data rather than assumptions.
BHA Components We Inspect
Our BHA inspection services cover all critical downhole components, including:
- Drill Collars
- Heavy Weight Drill Pipe (HWDP)
- Flexi Collars
- Subs and Substitutes
- Stabilisers
- Hole Openers and Roller Reamers
- Downhole Motors
- Jars and Shock Tools
- Drill Bits
- LWD / MWD Tools
Each component is assessed with the specific operational risks and failure modes in mind – not treated as a generic inspection item.
Inspection Services Aligned With Drilling Risk
OTI provides routine and critical‑path BHA inspections in line with API and DS‑1 standards, with inspection depth matched to operational exposure and criticality.
Visual and Dimensional Inspection
- OD / ID measurements
- Thread condition and profile verification
- Identification of wear, corrosion, scoring, and impact damage
Non‑Destructive Testing (NDT)
- Magnetic Particle Inspection (MPI) for surface and near‑surface cracking
- Ultrasonic Testing (UT) for wall thickness loss and internal defects
- Dye Penetrant Testing (PT) for non‑magnetic components
- Electromagnetic Inspection (EMI) for drill pipe and HWDP
Mechanical and Functional Checks
- Thread gauge verification and recuts
- Tool joint fit and engagement checks
- Assembly condition, alignment, and balance verification
The goal is not just defect detection – but early warning of fatigue and degradation trends that can impact run life.
Inspection Data That Supports Better Run Decisions
Inspection only adds value if the results are clear and actionable.
OTI provides inspection outputs that help drilling teams:
- assess fitness‑for‑purpose
- decide whether tools can be safely re‑run
- plan refurbishment or retirement
- reduce uncertainty around critical assemblies
This supports better planning, fewer last‑minute decisions, and improved drilling efficiency.
Delivered by Technicians Who Understand Drilling Operations
Our BHA inspections are carried out by fully certified, experienced personnel who understand how inspection fits into the realities of drilling schedules, rig operations, and turnaround pressures.
We work with:
- drilling contractors
- operators
- service companies
providing inspection support that is responsive, practical, and aligned with operational priorities.
Where OTI Adds Value
Clients rely on OTI for BHA inspection because we:
- understand the cost of failure
- align inspection depth with operational risk
- deliver clear, standards‑compliant results
- support confident drilling decisions
Whether supporting routine inspection programs or critical drilling campaigns, our focus is on keeping tools turning and wells progressing safely.