Title:
GRAPHENE HEATING THERMAL PRESERVATION SLEEVE FOR WELLHEAD OF OIL-GAS WELL
Document Type and Number:
WIPO Patent Application WO/2021/004044
Kind Code:
A1
Abstract:
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 comprising a high-temperature-resistant insulation 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 (15) needing to be heated. When the electrode layers (3) at 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 to 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.
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Inventors:
ZHAO ANPING (CN)
YANG SHIJUN (CN)
YANG SHIJUN (CN)
Application Number:
PCT/CN2020/000146
Publication Date:
January 14, 2021
Filing Date:
July 06, 2020
Export Citation:
Assignee:
ZHAO ANPING (CN)
International Classes:
E21B36/00; H05B3/02
Foreign References:
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| CN109882683A | 2019-06-14 | |||
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Other References:
See also references of EP 3992421A4
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