Project 18 capstone poster rm zy

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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


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