Conceptual Design Alternatives to Current Electric Submersible Pump
GE Liaison: Mr. Blair Ellington Faculty Advisor: Dr. Haider Hekiri
Background Information on Electric Submersible Pumps
The Pump in an ESP (Electric Submersible Pump) system provides artificial lift utilizing Team: Robert Dooman, Cole Lindley William Nelson, Dominic Scott
centrifugal force to force fluid up from the wellbore to the surface.
Issues with Current Design
Design 2: PTFE Compression Tube Insert
• The need for a custom cut compression tube for each individual manufactured pump
Pre-loaded polytetrafluoroethylene (PTFE) insert will allow diffusers or housing to
• Spinning diffusers due to loss of compression across the stack
expand in response to thermal expansion while maintaining the proper compressive force
• Diffusers dimpling due to over-compression across the stack
across the stack.
Finite Element Analysis of New Compression Tube
Design 1: Interlocking Diffusers An interlocking system between diffusers allows them to stay mechanically locked when under-compressed preventing diffusers from spinning. Design Development: Original Parts
Design Development: Conceptual Ideas
Final Developed Design Idea
Interlocking Spurs
Description
Value
Compressive Load
19,500 lbf
Thermal Expansion of Stack @ 250 ºF (17 stages)
0.0984 in.
Axial Displacement of PTFE
0.0425 in.
Compressive Modulus of PTFE
70,000 psi
Equivalent Stress
45,000 psi
Potential Benefits of Design Changes
Interlocking teeth
• Compression Tube Insert will eliminate custom cutting process, saving time during
Original Diffuser Casting
assembly Keying Diffuser
• Designs will reduce well downtime, improving customer satisfaction and their potential production • Fewer failures will lead to lower maintenance costs
Original Machined Diffuser