Ultrasonic Testing for Submersible Pumps
Specialized Ultrasonic Testing programs for Submersible Pump Reliability & Maintenance.
Why it matters
Key Benefits
Leak Detection
Airborne ultrasonic detection identifies pressure and vacuum leaks in submersible pumps systems that are inaudible to the human ear. Locating leaks quickly reduces energy waste and prevents process quality problems.
Bearing Lubrication Optimization
Ultrasonic monitoring of submersible pumps bearings provides real-time feedback during grease application to prevent both under-lubrication and over-lubrication. Proper lubrication extends bearing life and reduces friction-related energy losses.
Early-Stage Fault Detection
Contact ultrasonic measurements on submersible pumps detect high-frequency stress waves generated by metal-to-metal contact, friction, and impacts in the submersible motor, impeller stages, thrust bearing, and cable assembly. These signals appear weeks before vibration amplitude increases detectably.
Context
Challenge & Approach
The Reliability Challenge
Submersible pump check valve leakage produces ultrasonic turbulence that must travel through pipe walls and fluid columns to reach surface measurement points, attenuating signals significantly. Column pipe joints may leak at threaded or flanged connections, but detection sensitivity decreases with depth. Discharge head gasket and seal leakage generates ultrasonic energy that competes with normal flow noise. Pump operating noise transmits through the column pipe and creates background ultrasonic levels. Well casing and column pipe geometry affect sound transmission paths. Motor cable conduit connections represent additional potential leak paths that are detectable ultrasonically.
Our Approach
We apply contact ultrasonic sensors to the discharge head, column pipe accessible sections, and check valve body locations accessible from the surface. Check valve tightness is assessed during pump shutdown by monitoring for reverse-flow ultrasonic turbulence through the valve seat after the discharge pressure stabilizes. Column pipe joint integrity is evaluated through ultrasonic emission at accessible flanged or threaded connections. Discharge head sealing is verified through airborne ultrasonic scanning of gasket joints and shaft seal areas. We establish baseline readings under known-good conditions for trending. For deep-set pumps, we use waveguide techniques to extend ultrasonic contact to below-grade components. Reports include check valve tightness assessment, joint integrity evaluation, and recommendations for inspection or repair during the next scheduled pump pull.
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Learn More →Ultrasonic testing detects bearing faults, lubrication deficiencies, internal leakage, and electrical discharge in submersible pumps. Airborne ultrasonic detection locates pressure and vacuum leaks at joints, seals, and connections. Contact ultrasonic measurements identify early-stage metal fatigue and friction before vibration levels increase measurably.
Ultrasonic testing detects high-frequency stress waves that appear earlier in the fault progression than vibration amplitude increases in submersible pumps. It is most sensitive to friction, impact, and turbulent flow, while vibration analysis excels at identifying specific fault types through frequency patterns. The two technologies are complementary rather than interchangeable for monitoring submersible pumps.
Ultrasonic testing is effective on rotating and reciprocating components, pressure boundaries, and electrical systems associated with submersible pumps. It is particularly valuable for slow-speed equipment where vibration signals are too weak for reliable analysis. Access to measurement points and background ultrasonic noise levels are the main factors that determine measurement quality.
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Test Submersible Pump Components from the Surface
Our ultrasonic methods assess check valve tightness and column pipe integrity on submersible pumps without the cost of pulling the pump.
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