Laser Jetter Pipe Heating for Subsea Scale Removal
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Solution Overview
Problem
The efficiency of scale removal treatments in subsea equipment is hindered by the cooling effect of the seabed, which reduces the temperature of the treatment solution below the optimal range for complexation reactions.
Innovation Solution
A laser blast pipe with a recirculation system is used to heat the scale removal solution inside the production string, maintaining the temperature within the optimal range for efficient complexation reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the treatment solution is pumped through long production lines from the production platform to the production line, then the treatment can reach the scaled section, but the heat exchange with the seabed causes cooling of the solution below the optimal temperature range
Solution Approach 1:
The laser heating module pre-heats the treatment solution before it reaches the scaled section, compensating for the heat loss that occurs during transport through the production line. This preliminary heating action ensures the solution arrives at the treatment zone at the optimal temperature range for complexation reactions.
Solution Approach 2:
The laser beam acts as an intermediary energy transfer medium, converting optical energy from the laser source into thermal energy in the treatment solution. This intermediary mechanism allows efficient heating without direct thermal contact with the heated components.
2Productivity
If the treatment is left inside the production string for an extended period to ensure complete scale removal, then the complexation reaction can proceed thoroughly, but the prolonged exposure to seabed temperature reduces reaction efficiency
Solution Approach 1:
The laser heating module operates continuously throughout the treatment process, maintaining the treatment solution at the optimal temperature range for the entire duration of the complexation reaction. This continuous heating ensures sustained high reaction efficiency without temperature degradation over time.
3Adaptability or versatility
If the production line distance from the seabed is increased to access remote satellite wells, then more wells can be produced, but the heat exchange with the seabed causes greater temperature reduction of the treatment solution
Solution Approach 1:
The laser heating module applies localized heating directly at the treatment zone within the production string, ensuring that the treatment solution maintains optimal temperature precisely where the scale removal reaction occurs, regardless of the overall line length or distance from the seabed.
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 use of the laser blast pipe and recirculation system effectively compensates for heat loss, maintaining the reaction temperature and enhancing the efficiency of scale removal treatments in subsea equipment.
Implementation Method 1
A laser blast pipe with a recirculation system is used to heat the scale removal solution inside the production string
Implementation Method 2
a recirculation system with the objective of heating the scale removal solution, inside the string of production during the time the reaction is taking place
Implementation Method 3
The efficiency of the complexation reaction depends on the temperature, and the optimal temperature range is around 80° C.
Data Source
AI summary
The present invention addresses to a laser blasting pipe for heating a scale removal treatment to be descended by electric cable, and a recirculation system with the objective of heating the scale removal solution, inside the production string during the time the reaction is taking place, in order to guarantee its efficiency. The laser blast pipe is a device similar to a metallic cylinder that can travel through the interior of a production string, being descended by gravity itself, and ascended by the action of the cable, being able to recirculate and heat the fluid. This heating would have the function of compensating the heat loss of the removal solution due to the heat exchange of the riser with the seabed, and maintaining the temperature of the reaction inside the production line in an optimal range of yield, thus aiming at increasing the reaction efficiency and the reduction of the time required for the removal of scale in the production string of the well.