Supply K341 long-lasting expansion packer

钢体最大外径：

113mm 146mm

钢体最小内径：

60mm 62mm

两端连接螺纹：

2-7/8TBG

Currently, there are two series of water injection packers commonly used in oil fields: and. These two series of packers are commonly used in layered water injection in oil fields, but they have many shortcomings. For example, the series of water injection packers are worried about automatically unsealing due to the large inter-layer pressure difference during water injection. They are all equipped with anti-unblocking locking mechanisms or increase the unsealing force to overcome the inter-layer pressure difference. This results in strong unblocking force or difficulty in unblocking. Both the well cleaning channel and the packer are equipped with well cleaning channels to meet the needs of well cleaning. However, due to the limited design space, the well cleaning channels are relatively small, which results in high resistance during well cleaning and makes the well cleaning difficult. The rubber barrels of series expansion packers are prone to tearing at both ends of the rubber barrels under fluctuations in water injection pressure, seriously affecting the normal service life of the packers. When the injection is stopped, the rubber cartridge loses its expansion force, and the rubber cartridge returns to its original shape, causing backflow between layers.
Technical Features
) The rubber barrel adopts a double-layer rubber barrel plus steel mesh structure, which effectively improves the pressure resistance of the rubber barrel, and can evenly expand during the compression process of the rubber barrel, improving the shoulder stress of the rubber barrel. Effectively extend the service life of the rubber cartridge. Due to the double-layer rubber cylinder and steel mesh structure design, even if the outer rubber cylinder is slightly damaged, the inner rubber cylinder can still function as a seal, effectively improving the reliability of the sealing of the rubber cylinder.
) The self-sealing structure of the rubber cylinder is adopted, which can maintain the pressure in the inner cavity of the rubber cylinder when injection is stopped, keeping the rubber cylinder in a sealed state, and achieving the purpose of preventing channeling between layers.
) Adopts a wedge-type pressure relief mechanism. When the well is being cleaned, the pressure relief piston moves downwards driven by the above pressure, opening the pressure relief channel and restoring the rubber cartridge to its original state to achieve smooth well cleaning.
Main technical parameters
Main technical parameters of long-term expansion packer
< > Project






< > Maximum outer diameter of steel body

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< > Minimum inner diameter of steel body
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< > Seal pressure difference

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< > Starting pressure

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< > Well cleaning pressure difference

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< > Connecting threads at both ends

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