Self-heating casing string
The invention provides a self-heating casing string. The self-heating casing string comprises a heating coil and at least one electric power device, a cavity is formed between the outer wall and the inner wall of the casing string, the heating coil is spirally arranged in the cavity, the electric po...
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Main Authors | , , , , , , , , , , , , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
15.09.2020
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Subjects | |
Online Access | Get full text |
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