Superconductive RF Antenna for Hydrocarbon Heating
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Solution Overview
Problem
Current hydrocarbon resource processing, particularly in the FCC process, faces inefficiencies such as low conversion rates, coke residue issues, high reactant emissions, and short catalyst lifespan, along with inefficient heating methods like RF energy application which can lead to energy loss and irregular heating.
Innovation Solution
An apparatus and method utilizing a radio frequency (RF) antenna constructed partially of superconductive material, integrated with a cryogenic coolant system, to enhance heating efficiency in subterranean hydrocarbon formations, including a coaxial RF transmission line with superconductive layers for reduced energy loss and improved thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional RF heating is applied to hydrocarbon resources, then heating can be achieved, but energy loss increases and heating consistency deteriorates
Solution Approach 1:
The patent changes the electrical conductivity parameter of the antenna material from conventional conductive material to superconductive material, operating at cryogenic temperatures. This parameter change reduces resistive energy loss and improves the consistency of RF energy distribution to the hydrocarbon resources, directly addressing both the energy loss and heating consistency issues.
Solution Approach 2:
The patent employs a composite structure combining superconductive material with conventional RF transmission line components. The superconductive antenna elements are integrated with coaxial transmission lines and cryogenic cooling systems, creating a composite system that leverages the unique properties of superconductive materials while maintaining practical engineering implementation.
2Productivity
If FCC process is used for hydrocarbon cracking, then synthetic crude oil can be produced, but conversion efficiency is limited and coke residue increases
Solution Approach 1:
The patent replaces the thermal conduction-based heating mechanism in conventional FCC with electromagnetic RF heating. This substitution allows for more efficient and uniform energy distribution to the bitumen, improving conversion efficiency to synthetic crude oil while reducing the formation of coke residue through more controlled heating.
3Speed
If conducted heating is applied to hydrocarbon reservoirs, then heating can be achieved, but heating speed is slow due to low thermal conductivity
Solution Approach 1:
The patent substitutes thermal conduction heating with electromagnetic RF heating. Since electromagnetic fields can penetrate the hydrocarbon resources directly without relying on thermal conduction through the low-conductivity oil sand, this substitution dramatically increases heating speed while overcoming the thermal conductivity limitation.
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 superconductive materials in RF antennas and transmission lines within wellbores increases the efficiency of hydrocarbon resource upgrading by minimizing energy loss and achieving more consistent heating, thereby improving the conversion of bitumen to gasoline and reducing operational costs.
Implementation Method 1
The RF antenna may be constructed, at least partially, of a superconductive material
Implementation Method 2
an RF source configured to supply RF power to the RF antenna to heat the hydrocarbon resources
Implementation Method 3
integrated with a cryogenic coolant system
Data Source
AI summary
A device for heating hydrocarbon resources in a subterranean formation having a wellbore therein may include a radio frequency (RF) antenna positioned within the wellbore. The RF antenna may include a superconductive material. The device may include an RF source configured to supply RF power to the RF antenna to heat the hydrocarbon resources.