Submersible Pumping System With Sequential Expandable Chambers
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Solution Overview
Problem
Conventional submersible pumping systems used in subterranean environments face issues such as low efficiency, high capital costs, and reliability concerns when pumping fluids from wellbores.
Innovation Solution
A submersible pumping system utilizing a contained working fluid and a control system with uniquely arranged valves that direct flow along repetitive paths, employing expandable members like diaphragms to sequentially discharge and intake fluids, ensuring efficient fluid movement through a wellbore.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional submersible pumping systems are used, then fluid pumping capability is provided, but system efficiency is low
Solution Approach 1:
The pump divides the pumping chamber into multiple separate chambers (first pumping chamber and second pumping chamber) that operate in sequence. Each chamber has its own expandable member and valve arrangement, allowing independent operation and reducing energy losses through coordinated sequential pumping actions.
Solution Approach 2:
The pump employs periodic reciprocating motion of expandable members that sequentially expand and contract to create alternating pumping cycles in different chambers. This periodic action with optimized timing reduces energy losses by ensuring continuous productive pumping phases without idle periods.
2Productivity
If conventional submersible pumping systems are used, then fluid pumping capability is provided, but capital cost is high
Solution Approach 1:
The control valve serves multiple functions: it directs working fluid to specific chambers, acts as a check valve to prevent reverse flow, and coordinates the sequential operation of multiple pumping chambers. This multi-functionality reduces the number of separate components needed, lowering manufacturing costs while maintaining pumping capability.
Solution Approach 2:
The patent combines the working fluid network, control mechanisms, and pumping chambers into an integrated submersible pump unit. The control valve is integrated directly into the chamber architecture, and the working fluid system serves both power transmission and control functions, reducing overall system complexity and capital cost.
3Productivity
If conventional submersible pumping systems are used, then fluid pumping capability is provided, but reliability is reduced
Solution Approach 1:
The control valve incorporates a feedback mechanism that responds to pressure differential changes between chambers. When one chamber reaches the desired pressure, the valve automatically detects this through pressure feedback and redirects working fluid to the next chamber, ensuring reliable sequential operation without manual intervention or system failures.
Solution Approach 2:
The check valves are positioned to prevent reverse flow before it can cause damage or operational failure. The working fluid network is designed with pressure equalization pathways that cushion pressure transitions between chambers, preventing shock loads and mechanical failures before they occur.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system enhances pumping efficiency and reliability by utilizing a contained working fluid network and a control valve mechanism that automatically directs flow, improving the overall performance and cost-effectiveness of fluid extraction from subterranean reservoirs.
Implementation Method 1
In operation, a pressure differential is created between the working fluid in the expandable members and the well fluid to be pumped. The pressure differential is used to change the state/position of the control valve.
Implementation Method 2
Movement of the contained working fluid is directed by a control system having uniquely arranged valves that automatically direct flow along repetitive flow paths.
Data Source
AI summary
A technique is provided for pumping fluids in a subterranean wellbore. A submersible pumping system can be deployed in a wellbore for moving desired fluids within the wellbore. The pumping system energizes the desired fluid movement by reciprocating a working fluid between expandable members.