Oil & Gas
Remote critical compressors, turbines, pumps and drilling equipment need robust sampling, contamination control and hazardous-service awareness.
Oil & Gas programmes should connect equipment criticality, credible failure modes, representative samples, routine and triggered tests, response ownership and maintenance feedback.
Design the programme around how the assets fail.
Upstream and downstream assets face process-gas ingress, sand, water, high pressure and remote logistics. Fluid samples may contain hazardous process material and must be declared and packaged accordingly.
Use this guide to scope an oil-analysis programme; then confirm equipment-specific limits, methods and safety controls with the laboratory, OEM and site engineering team.
What to test—and why.
Routine panels create comparable history. Triggered tests answer a focused question after a trend change, inspection finding or operating event.
| Equipment | Fluids | Primary risks | Routine tests | Triggered / advanced tests | Sampling approach |
|---|---|---|---|---|---|
| Gas compressors and turbines | Synthetic/mineral compressor and turbine oil | Gas dilution, oxidation, varnish, bearing wear | kinematic viscosity, acid number, ftir oil condition monitoring | elemental analysis icp oes, karl fischer water, analytical ferrography | Sample an active, safely conditioned point and declare process exposure. |
| Drilling and production hydraulics | Hydraulic fluid | Water, particles, sand, pump/valve wear | particle count, karl fischer water, kinematic viscosity | elemental analysis icp oes, pq index, analytical ferrography | Use dedicated live-system ports and particle-clean bottles. |
| Pumps and gear drives | Bearing/circulating oil and gear oil | Seal ingress, corrosion, wear, wrong oil | elemental analysis icp oes, kinematic viscosity, karl fischer water | pq index, analytical ferrography | Sample bearing drains and gear returns at a consistent operating state. |
Controls that make the data useful.
- 01Communicate sample hazards before shipment
- 02Use remote-site kits with strict chain of custody
- 03Correlate fluid trends with vibration and process data
- 04Escalate sand/water ingress and rapid debris generation
Decisions the programme should improve.
- 01Safer maintenance planning
- 02Reduced remote failures
- 03Targeted filtration and sealing
- 04Evidence-based intervention timing
Build a closed evidence-to-action loop.
A test panel becomes a reliability programme only when the sample, interpretation, response and field outcome remain connected to the same asset and compartment.
| Stage | Control | Evidence created | Decision |
|---|---|---|---|
| 1 · Baseline | Confirm asset, compartment, fluid, method, point and operating state | Comparable new or stable in-service reference | Define normal variability and initial interval |
| 2 · Routine surveillance | Collect at a fixed risk-based interval from the documented point | Trend of fluid condition, contamination and wear | Continue, monitor or request focused confirmation |
| 3 · Exception diagnosis | Use mechanism-specific tests, secondary points, filters and companion technologies | Independent evidence for or against the failure hypothesis | Protect, inspect, correct or revise the hypothesis |
| 4 · Verification | Repeat comparable evidence after maintenance | Post-action condition and rate of change | Close the work order or escalate |
| 5 · Programme learning | Record inspection findings, false positives and missed detections | Asset-specific failure signatures and improved rules | Change point, panel, interval, limit or procedure |
Translate severity into a defined response.
These are workflow classes—not universal pass/fail limits. Asset consequence, rate of change and site safety procedures control the urgency.
| Class | Typical evidence pattern | Minimum review | Possible response |
|---|---|---|---|
| Stable / Normal | Comparable results remain within the justified baseline and no corroborating distress is present | Confirm route and context are complete | Continue the planned interval |
| Monitor | A small deviation, unusual rate of change or incomplete contextual explanation | Check sample, top-up, maintenance and companion indicators | Clarify data, add one focused test or shorten the interval |
| Abnormal / Investigate | Unsatisfactory fluid, contamination or wear evidence with a credible developing mechanism | Confirm promptly using independent evidence | Inspect, control the source and plan corrective work |
| Critical / Urgent review | Rapid, severe or corroborated change with material equipment or safety consequence | Immediate qualified operational and engineering review | Apply site procedures; protect people and equipment before diagnosis continues |