Concentric dual-tube separated injection CO2 tubular column and application method thereof
The invention relates to the technical field of oilfield development gas injection, in particular to a concentric dual-tube separated injection CO2 tubular column applied to CO2 separated injection. According to the concentric dual-tube separated injection CO2 tubular column, a sleeve pipe, an outer...
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Main Authors | , , , , , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
23.08.2019
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Subjects | |
Online Access | Get full text |
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Summary: | The invention relates to the technical field of oilfield development gas injection, in particular to a concentric dual-tube separated injection CO2 tubular column applied to CO2 separated injection. According to the concentric dual-tube separated injection CO2 tubular column, a sleeve pipe, an outer pipe and an inner pipe are sleeved in succession, and an outer door, an upper packer, a gas separation valve, a lower packer and a gas injection valve are connected to the outer pipe in succession; the lower end of the inner pipe is firstly connected with an inner door and then is connected with the gas separation valve; and an inserting sealing mechanism, a locking mechanism and an anti-return mechanism are arranged in the gas separation valve. An application method of the concentric dual-tubeseparated injection CO2 tubular column comprises the steps that an outer tubular column is fed; the packers are packed; the inner pipe is fed to be inserted and sealed and is locked; gas is injected;an inner door press well |
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Bibliography: | Application Number: CN201910536398 |