Pressure Exchanger Mud Pressurization Pump Lifespan
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Solution Overview
Problem
Drilling mud pumps face reduced lifespan due to the stress caused by drilling mud components like cuttings, clay, minerals, and aggressive chemicals, which necessitates the development of a more durable and efficient pressurization system.
Innovation Solution
A pressure exchanger (PX) system that transfers hydraulic energy from a high-pressure clean fluid, such as pressurized water, to drilling mud, eliminating the need for the mud to pass through the pump and reducing stress on the pumping system, using a rotary isobaric pressure exchanger with fewer moving parts and improved durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a mud pump is used to pressurize drilling mud, then the drilling mud can be pumped to the drilling rig, but the pump lifespan is reduced due to stress from cuttings, clay, minerals, and aggressive chemicals
Solution Approach 1:
The system separates the pressurization function from the mud handling function. A high-pressure pump pressurizes clean water separately, then a pressure exchanger transfers this pressure to the drilling mud through hydraulic coupling, eliminating direct contact between the pump and harmful mud components
Solution Approach 2:
Clean water serves as an intermediary fluid that carries hydraulic energy from the pump to the drilling mud through the pressure exchanger. The water absorbs the pump's mechanical energy and transfers it to the mud without the pump directly handling the mud
Solution Approach 3:
The system replaces a mechanical mud pump with a hydraulic pressure transfer system. Instead of mechanically pushing mud through a pump, the system uses hydraulic pressure from water to pressurize the mud through isobaric exchange, eliminating mechanical stress on the pump from mud components
2Reliability
If a durable pump is used to handle drilling mud, then the pump lifespan is extended, but the system complexity and cost increase
Solution Approach 1:
The system divides the function into two separate systems: a simple high-pressure water pump system and a mud pressurization system connected through a pressure exchanger. This segmentation allows each system to be optimized independently, reducing overall complexity
Solution Approach 2:
The pressure exchanger creates a hydraulic copy of the water pressure system to pressurize the mud. Instead of building a complex durable mud pump, the system uses a simpler water pump and replicates its pressure output through hydraulic coupling with the mud
3Reliability
If drilling mud is thoroughly cleaned before pumping, then pump stress is reduced, but the time and cost for cleaning increase
Solution Approach 1:
The system performs preliminary pressurization of clean water before it contacts the drilling mud. By pre-pressurizing the water in a separate clean system, the need for thorough mud cleaning is eliminated, as the pump never handles the mud directly
Solution Approach 2:
The system extracts the pressurization function from the mud handling process. By removing the pump from the mud stream and using it only with clean water, the harmful interaction between the pump and mud components is completely eliminated
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 PX system extends the lifespan of the high-pressure pump and enhances efficiency by allowing a less durable but more efficient pump to be used for clean fluids, reducing the need for thorough mud cleaning and potentially lowering operational costs.
Implementation Method 1
transfers hydraulic energy from a high-pressure clean fluid, such as pressurized water, to drilling mud
Implementation Method 2
using a rotary isobaric pressure exchanger with fewer moving parts and improved durability
Data Source
AI summary
A system includes a pump configured to pressurize a first fluid, and a pressure exchanger (PX). The PX is configured to receive a second fluid, to receive the pressurized first fluid, and to utilize the pressurized first fluid to pressurize the drilling mud for transport to a well.