Rubber cylinder with spiral inner cores

Abstract

The invention relates to the technical field of sealing in oil exploitation industry, in particular to a rubber cylinder with spiral inner cores. The rubber cylinder comprises a plurality of cylindrical inner cores, wherein each inner core extends in an axial direction of the rubber cylinder as a whole and is provided with an opening in the axial direction; each inner core spirally surrounds a through hole as a whole and extends towards the outer surface; each inner core has mutually crossed high-temperature-resistant and high-pressure-resistant fiber silks; and a rubber matrix is distributed on the surface and in the interior of each inner core and bonds the fiber silks. The interior of the rubber matrix is covered with the inner cores and each inner core has the mutually crossed fiber silks, so that the rubber matrix is distributed on the surface and in the interior of each inner core and bonds the fiber silks. When the rubber cylinder is expanded due to an axial pressure, the fiber silks limit the expansion, so that the structure hardness of the rubber cylinder is improved as a whole and the compressive strength of the rubber cylinder is enhanced.

Description

technical field [0001] The invention relates to the technical field of sealing in the petroleum exploitation industry, in particular to a rubber cartridge with a spiral inner core capable of withstanding high temperature and high pressure. Background technique [0002] The rubber cartridge is a seal used in the field of oil exploration. The rubber cartridge is generally made of rubber materials, so it is called a rubber cartridge. It should be noted that the rubber cartridge is only a technical term established in the industry, which is used to indicate a functional component used in conjunction with the packer in the oil extraction process, not just that the material of the rubber cartridge needs to be made of rubber make. When the rubber tube bears a certain pressure to make it deform for sealing, it is necessary to consider the deformation capacity of the rubber tube itself. If the deformation is insufficient, it will not be able to perform the sealing function; if the d...

AI Technical Summary

Problems solved by technology

When the rubber tube bears a certain pressure to promote its deformation for sealing, it is necessary to consider the deformation capacity of the rubber tube itself. If the deformation is insufficient, it will not be able to perform the sealing function; if the deformation is too large, it may cause the rubber tube to collapse due to crushing. failure, loss of resilience

The most important thing is that when the rubber cartridge is subjected to high temperature steam, the rubber cartridge is more likely to fail due to high temperature and high pressure, resulting in loss of recovery ability

[0003] The inventors found that due to the difference in the softness and hardness of the colloids constituting the rubber tube (the degree of deformation of the colloid under a certain pressure), when using a softer colloid to make the rubber tube, the rubber tube will not be able to withstand the axial force of the rated size. The pressure is crushed, or at this time the rubber tube is deformed too much under the rated axial pressure and crushed

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