Heated Vacuum Slurry Box for Arctic Freezing and Space Limits
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Solution Overview
Problem
Conventional slurry transport systems face challenges in cold climates due to freezing issues, limited space at oil and gas well sites, and equipment wear from transporting heated tanks on poor roads, especially in regions like northern Alaska where temperatures drop below -50°C, affecting steel tensile toughness and safe working capacities.
Innovation Solution
A self-contained, portable vacuum slurry box capable of both vacuum and positive pressure, constructed with heat-treated steel (ASTM A537 Grade B) to withstand extreme cold, featuring a vacuum tank, mechanical bay, vertical tailgate, and stacking system for efficient use and storage, with warming tubes to prevent freezing and a pressure relief valve for safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heating functions are provided to prevent slurry freezing in cold climates, then the slurry can be kept from freezing, but equipment wear increases when transporting heated tanks over poor roads during warm months
Solution Approach 1:
The heating system is designed to be dynamically controllable, allowing operators to activate heating only when cold temperatures are anticipated or present. The system can be turned off during warm weather transport, adapting its operation to actual environmental conditions rather than running continuously, thereby preventing equipment wear while maintaining freezing protection when needed.
2Strength
If steel structures are used in extreme cold temperatures below -50°C, then the structure provides strength, but the tensile toughness is adversely affected and safe working capacities are reduced
Solution Approach 1:
The steel material parameters are changed by selecting or treating steel with a low ductile-to-brittle transition temperature, ensuring the material maintains adequate tensile toughness at extreme cold temperatures below -50°C. This material parameter change allows the structure to retain both strength and reliability in Arctic conditions.
Solution Approach 2:
The system uses composite construction combining steel structures with insulation materials and heating elements. This composite approach allows the steel to provide structural strength while the insulation and heating components compensate for the reduced tensile toughness in extreme cold, maintaining overall system reliability.
3Productivity
If multiple vacuum tanks are stored at oil and gas well sites to ensure timely removal, then the sites can handle slurry disposal efficiently, but the limited space at these sites cannot accommodate many tanks
Solution Approach 1:
The vacuum tank is designed with multi-functionality, serving both as a collection vessel and incorporating integrated heating and unloading capabilities. This universal design allows a single tank to be repeatedly used across multiple locations rather than requiring multiple tanks stored simultaneously at one site, maintaining disposal efficiency while reducing space requirements.
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
Enables efficient slurry transport and disposal in extreme cold, reduces equipment wear by maintaining operational efficiency and safety, and allows for compact storage and transportation, addressing the limitations of conventional systems in cold climates.
Implementation Method 1
provide heat energy to keep the slurry cuttings from freezing
Implementation Method 2
insulation material positioned between the vacuum tank and the structure
Implementation Method 3
The vacuum can cause material such as slurry cuttings to be pulled into the vacuum tank
Implementation Method 4
a pressure relief valve for safe operation
Data Source
AI summary
A self-contained heated portable vacuum slurry box which is constructed to hold both a positive pressure and a vacuum pressure. The slurry box generally includes a vacuum tank, a structure attached to the tank, a vertical tailgate, and a hook for pulling the slurry box onto a vehicle. The slurry box meets space restriction requirements while functioning within the environmental conditions of winter and summer seasons.