Oil Analysis for Submersible Pumps
Specialized Oil & Lubrication Analysis programs for Submersible Pump Reliability & Maintenance.
Why it matters
Key Benefits
Wear Metal Trending
Spectrometric oil analysis tracks iron, copper, tin, and lead concentrations in submersible pumps lubricant samples to identify wear patterns in the submersible motor, impeller stages, thrust bearing, and cable assembly. Rising wear metal trends trigger investigation before component damage becomes severe.
Contamination Detection
Particle counting and moisture analysis identify external contaminants entering submersible pumps lubrication systems. Catching contamination early prevents accelerated wear of the submersible motor, impeller stages, thrust bearing, and cable assembly and extends fluid service life.
Lubricant Condition Monitoring
Viscosity, acid number, and oxidation testing confirm whether submersible pumps lubricant remains within specification. Replacing degraded fluid on condition rather than on a fixed schedule reduces both lubricant costs and the risk of lubrication-related failures.
Context
Challenge & Approach
The Reliability Challenge
Submersible pump motor oil operates in a sealed system where sampling opportunities may be limited to planned pull events. Moisture ingress through shaft seals or cable entry points degrades dielectric strength and initiates winding insulation breakdown. The sealed oil volume means that even small amounts of contamination produce significant concentration changes. Motor bearing wear metals mix with winding insulation degradation products. High operating temperatures in deep well applications accelerate fluid breakdown. Sand and silt ingestion through damaged seals introduces abrasive particles that accelerate bearing and seal wear.
Our Approach
We sample motor fill fluid during scheduled pull events using clean procedures that prevent atmospheric contamination. Dielectric breakdown voltage testing per ASTM D877 or D1816 assesses insulation capability. Karl Fischer moisture testing quantifies water content against OEM maximum limits. Spectrometric analysis identifies bearing wear metals (iron, chromium, lead, tin) and copper from winding conductor wear. Particle counting and ferrography detect abrasive particles from seal bypass. Acid number testing and FTIR spectroscopy evaluate fluid degradation state. Reports include dielectric strength trending, bearing condition assessment, seal integrity evaluation, and fluid replacement recommendations with remaining useful life estimates.
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Learn More →Oil analysis for submersible pumps reveals wear metal concentrations indicating degradation of the submersible motor, impeller stages, thrust bearing, and cable assembly, contamination levels from water or process fluid ingress, and lubricant condition including viscosity, oxidation, and additive depletion. Ferrographic analysis identifies the size, shape, and composition of wear particles to pinpoint which component is generating debris.
Sampling intervals for submersible pumps depend on criticality and operating severity. Most programs sample critical equipment monthly and non-critical equipment quarterly. Newly commissioned or recently repaired submersible pumps should be sampled more frequently during the first few operating cycles to confirm break-in conditions are normal.
The core test slate for submersible pumps includes spectrometric wear metal analysis, particle count per ISO 4406, moisture content, viscosity at 40C, and acid number. Analytical ferrography should be added when screening tests indicate abnormal wear. Additional tests such as RPVOT for oxidation stability may be warranted depending on lubricant type and operating temperature.
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Prevent Submersible Motor Burnout
Our oil analysis detects moisture ingress and bearing wear in submersible pump motors before winding insulation failure forces a costly replacement.
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