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A packer for oil field downhole

A packer, oilfield well technology, applied in sealing/packing, wellbore/well components, earth-moving drilling, etc., can solve the problems of seal failure, hose expansion, and the packer cannot be unpacked smoothly.

Active Publication Date: 2021-06-04
DAQING DANNUO PETROLEUM TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of sealing the pipeline, the packer needs to squeeze the rubber hose so that the diameter of the rubber hose expands outwards to seal the pipeline. However, the rubber hose will be deformed after a long period of extrusion, resulting in the failure of the rubber hose to return to its original state. In the original shape, the rubber hose will always keep expanding, causing the packer to be unable to unseal smoothly, and the existing packer is sealed by hydraulic means, the sealing structure is complicated, and the seal failure is prone to occur. We provide a packer for oil field downhole

Method used

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  • A packer for oil field downhole
  • A packer for oil field downhole
  • A packer for oil field downhole

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0024] see Figure 1 to Figure 4 , the present invention provides a technical solution: a packer for oil field downhole, including a left connector 1, the inside of the left connector 1 is fixedly connected with a snap ring 2, and the snap ring 2 is snapped on the outside of the central pipe 4, and the left The outside of the connector 1 is provided with a thread 3, and the thread 3 is screwed together with the inner side of the adjustment ring 5. The inner part of the left connector 1 is movably socketed with the central tube 4, and the right end of the left connector 1 is threaded with the adjustment ring 5. Connect the left connector 1 and the adjustment ring 5 by...

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Abstract

The invention discloses a packer for downhole oil field, relates to the technical field of packers, in particular to a packer for downhole oil field, comprising a left connector, a center pipe is movably socketed inside the left connector, The right end of the left connector is threaded with an adjustment ring, and the bottom of the adjustment ring is fixedly connected with a block, and the inside of the central tube is provided with a movable groove, and the block is connected to the inside of the movable groove. A return spring is arranged inside the movable groove, and a rubber hose is arranged on the right side of the block. Connect the left connector and the adjustment ring by means of threaded connection, rotate the left connector to move the adjustment ring to the right, and then compress the support member through the adjustment ring to expand the support member to seal the pipeline, and the way of rotating and advancing is simpler , to prevent the adjustment ring from moving back and cause seal failure, ensuring the stability of the seal.

Description

technical field [0001] The invention relates to the technical field of packers, in particular to a packer for downhole oil fields. Background technique [0002] Packers are widely used in drilling, cementing, testing, completion and other operations. It is also used in downhole oil operations. In oil production engineering, the packer is used for stratification. The packer is designed with an oil production channel. When setting, the piston sleeve goes up, and the oil production channel is opened; after setting, the pressure of the upper layer acts on the balance On the piston, push the rubber tube upward to protect the unsealing pin from shearing force; when unsealing, the unsealing pin is sheared by the friction between the rubber tube and the sleeve, and the piston sleeve goes down to close the oil production channel. [0003] In the process of sealing the pipeline, the packer needs to squeeze the rubber hose so that the diameter of the rubber hose expands outwards to se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/127E21B33/129
CPCE21B33/127E21B33/129
Inventor 车太杰沈鑫宋红蕊肖云东
Owner DAQING DANNUO PETROLEUM TECH DEV
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