Method and device for allowing pipeline to penetrate through packer in geological storage of carbon dioxide

Abstract

The invention discloses a device for allowing a pipeline to penetrate through a packer in geological storage of carbon dioxide. The device comprises a penetrator, and the penetrator comprises a first penetrating mechanism located on one end side of a casing pipe and a second penetrating mechanism located on the other end side of the casing pipe; the end of the barrel wall of a transition connector of each penetrating mechanism is provided with multiple pipeline channel which are communicated with an opening formed in a pipe body, so that various pipelines can enter the transition connector through the pipeline channels formed in the first penetrating mechanism, enter the pipe body after penetrating through the barrel walls and then penetrate out from the pipe body after penetrating through the packer to enter the pipeline channels of the second penetrating mechanism, and therefore packer penetrating is achieved. The invention further discloses a corresponding penetrating method. The device can be suitable for allowing various pipelines such as flexible pipelines allowing small-angle bending, pipelines with the large rigidity and armor pipelines not suitable for being significantly bent to pass through; meanwhile, a special seal structure is arranged to preserve anti-corrosion liquid, and the technical problems that in existing geological storage of the carbon dioxide, the pipelines which are not suitable for being bent or have the larger rigidity cannot penetrate through the conventional packer and sealing and corrosion prevention cannot be achieved are solved.

Description

technical field [0001] The invention belongs to the technical field of carbon dioxide geological storage, and more specifically relates to a method and a device for a pipeline passing through a packer in carbon dioxide geological storage. Background technique [0002] Geological storage of carbon dioxide is essentially compressing carbon dioxide gas to a supercritical state and injecting it into a formation with appropriate sealing conditions deep underground for long-term storage and isolation, which can be used to reduce carbon dioxide emissions in the atmosphere for a period of time and slow down Global warming and the deterioration of the earth's environment. [0003] Injection wells and discharge wells are also usually arranged in carbon dioxide geological storage. The captured carbon dioxide is injected into the formation through the injection well, and at the same time, the corresponding fluid in the formation is discharged from the discharge well through migration. ...

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Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides a device and method for a pipeline passing through a packer in geological storage of carbon dioxide, which passes the pipeline through the wall of the oil pipe into the pipe, passes through the packer and then passes through the packer The tubing wall reaches the outside of the tubing, so that it can successfully cross the packer without modification and processing of the packer. It can be applied to flexible pipelines that allow small-angle bending, pipelines with high rigidity, and armored pipelines that are not suitable for large-scale bending A variety of pipelines pass through, especially the annular space between the pipe body and the pipe body is sealed by a special sealing structure, so that the anticorrosion of the penetrator and the pipelines in it can be achieved by injecting anticorrosive liquid, thereby solving the current carbon dioxide geology Various pipelines in storage, especially pipelines that are not suitable for bending or have high rigidity, cannot pass through conventional packers, and the technical problems that the passing equipment and pipelines are easily corroded will affect the detection accuracy

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