Graphene Heating Sleeve for Oil-Gas Wellhead Thermal Preservation
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Solution Overview
Problem
Existing heating methods for oil-gas well wellheads, such as electric heating belts, suffer from low heating efficiency, high energy consumption, and uneven heating due to the resistance heating principle, leading to significant energy waste and high production costs.
Innovation Solution
A graphene heating thermal preservation sleeve for the wellhead that utilizes graphene as a heating source, generating far infrared radiation through the action of an electric field, providing balanced heat distribution and efficient energy conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If electric heating belt is used for heating wellhead apparatus, then heating function is provided, but heating efficiency is low and energy consumption is high
Solution Approach 1:
The patent changes the heating principle from resistance heating to graphene far-infrared radiation heating. Graphene heating film converts electrical energy to thermal energy through far-infrared radiation with a conversion efficiency of over 99%, compared to the low efficiency of resistance heating belts. This parameter change in heating mechanism directly resolves the contradiction between energy consumption and heating efficiency.
Solution Approach 2:
The patent uses composite material structure consisting of graphene heating film, high-temperature resistant insulation layer, ceramic layer, and waterproof anti-static thermal preservation layer. This composite structure combines the high efficiency of graphene heating with the protective and insulating properties of multiple layers, achieving both high heating efficiency and energy savings.
2Temperature
If electric heating belt is wound on wellhead equipment, then heating is provided, but heating effect is unbalanced due to difficulty in uniform winding
Solution Approach 1:
The patent replaces the electric heating belt with a graphene heating film that can be wrapped around the wellhead apparatus. The flexible film structure conforms to the contours of the wellhead equipment, ensuring uniform heating coverage without the winding difficulties associated with belts. This thin film approach maintains ease of installation while achieving balanced heating effect.
Solution Approach 2:
The patent substitutes the mechanical winding process of heating belts with a wrap-around graphene film system. The film is designed to be wrapped around the wellhead apparatus, eliminating the need for complex winding operations and ensuring uniform contact and heating across all surfaces.
3Ease of repair
If electric heating belt is frequently disassembled for production, then maintenance is possible, but the heating belt is easy to damage and lose
Solution Approach 1:
The patent employs a composite protective structure with multiple layers including waterproof anti-static thermal preservation layer and ceramic layer that protect the graphene heating film. This robust composite construction significantly enhances durability and resistance to damage during installation, removal, and storage, while still allowing for maintenance when needed.
Solution Approach 2:
The graphene heating film is designed to be integrated with the wellhead apparatus through a secure wrapping and fastening system that allows for easy installation and removal without specialized tools or complex procedures. The system is designed to be self-sufficient, reducing the need for frequent maintenance while ensuring reliability during production operations.
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 graphene sleeve achieves efficient and balanced heating with over 99% conversion of electric heat energy, reducing energy consumption and maintenance costs while ensuring effective thermal preservation of the wellhead.
Implementation Method 1
heat energy generated by violent friction and impact between carbon atoms in the graphene under an action of electrical field is radiated through far infrared rays with a wavelength of 5-14 micrometers
Implementation Method 2
heat energy generated by violent friction and impact between carbon atoms in the graphene under an action of electrical field
Data Source
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AI summary
Provided is a graphene heating thermal preservation sleeve for a wellhead of an oil-gas well in an oil field, the graphene heating thermal preservation sleeve comprises a high-temperature-resistant thermal preservation layer (1), a graphene layer (2), an electrode layer (3), a high-temperature-resistant ceramic layer (4), a waterproof anti-static thermal preservation layer (5) and a housing (6) tightly attached together in sequence. Two parts of the heating thermal preservation sleeve are buckled together to enclose an oil-gas well wellhead apparatus (5) needing to be heated. When the electrode layers (3) at the two ends of the graphene layer (2) are electrified, under the action of an electric field, heat energy generated by violent friction and impact between carbon atoms of graphene is radiated out by means of far infrared rays with a wavelength in a range of 5-14 micrometers, for heating and thermal preservation of the oil-gas well wellhead apparatus (15) in an oil field. The thermal preservation sleeve saves energy consumption, is convenient to mount and dismount, and has a low maintenance cost.