A kind of manufacturing method of the compressed rubber cylinder assembly for the packer

Abstract

A compression type rubber cylinder assembly for a packer and a manufacturing method thereof, the assembly includes: a middle rubber cylinder, the two ends of which have a first conical surface, the middle part of the inner wall has an annular triangular cavity, and the outer wall thereof is a first circumferential surface; The rubber cylinder assembly at the opposite end is arranged symmetrically at both ends of the middle rubber cylinder. The end rubber cylinder assembly includes: an end rubber cylinder, one end of which has a first conical hole, the other end of the end rubber cylinder has a first plane, the outer wall of the end rubber cylinder has a second conical surface and a second circumferential surface, and the first plane passes through the arc The surface transitions to the second conical surface, the second conical surface is connected to the second circumferential surface, and the second circumferential surface is connected to the first conical hole; the protection bowl has a second plane at one end, and a second conical hole and a third plane at the other end, The inner edge of the second conical hole is connected to the third plane through the transition arc surface, and the outer wall of the protection bowl is the third circumferential surface. During application, the rubber cartridge assembly can be effectively expanded to achieve the purpose of sealing. Under the condition of 204°C, it can withstand a pressure difference of 105MPa, and only needs to give 13~15 tons of compression force to the end face.

Description

technical field [0001] The invention relates to the technical field of oil drilling, in particular to a compression rubber cartridge assembly for a packer and a manufacturing method thereof. Background technique [0002] Packer is one of the important downhole tools in the drilling and production process of oil field and gas field. The packer is connected to the downhole pipe string and is used to isolate the annular space between the tubing and the casing of the oil and gas well. When it is necessary to isolate the annular space between the tubing and the casing of the oil and gas well, the packer is connected to the downhole string, and after reaching the design depth, the packer on the packer is expanded by means of hydraulic or mechanical drive. Seal off the oil sleeve annulus. Different types of packers work in different ways. [0003] As the development and production of oil and gas wells continue to develop towards deep wells and ultra-deep wells in recent years, t...

AI Technical Summary

Problems solved by technology

In the use of packers, because the rubber sleeve assembly is in deep well conditions, the compression force cannot be effectively transmitted to the rubber sleeve assembly, so that the rubber sleeve cannot be effectively expanded to achieve sealing, and there are many cases of packer failure, which greatly limits The production speed and area of ​​gas wells and oil wells

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