Packer

Abstract

The invention discloses a packer, and relates to the technical field of oil and gas development. The packer comprises a central tube, a first shell, a guide sliding sleeve, a rubber cylinder, a cone and a second shell. The first shell sleeves the upper end of the central tube. A pipeline is arranged in the first shell in a penetrating mode. An annulus is formed between the first shell and the central tube. An electromagnetic inflating switch, an air cylinder and a piston rod which is partially inserted into the air cylinder are arranged in the annulus. A gas nozzle is arranged on the wall of the air cylinder. The electromagnetic inflating switch is connected with the pipeline and can control the opening and closing of the gas nozzle under the action of electric control, so that high-pressure gas conveyed by the pipeline enters the air cylinder or gas in the air cylinder is discharged. The guide sliding sleeve, the rubber cylinder and the cone sequentially sleeve the central tube from top to bottom. The upper portion of the guide sliding sleeve abuts against the piston rod. When high-pressure gas is injected into the air cylinder, the piston rod moves downwards to push the guide sliding sleeve to extrude the rubber cylinder. The second shell fixedly sleeves the lower end of the central tube and abuts against the cone. The packer facilitates setting and unsetting and can effectively reduce setting and unsetting periods and improve working efficiency.

Description

technical field [0001] The invention relates to the technical field of oil and gas development, in particular to a packer. Background technique [0002] With the continuous maturity of oil and natural gas exploration and development technology, various fracturing packers have emerged at home and abroad, which are effective in enhancing oil recovery. However, the packers in the prior art often use axial compression or pressure expansion packs, which have complex structures, difficulty in setting and unsealing, and long cycles, which not only increase operating time, but also reduce work efficiency , thus increasing the operating cost. Therefore, a new isolation technology is urgently needed to increase the operating speed, shorten the operating period, and improve the oil and gas development benefits. Contents of the invention [0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present inv...

AI Technical Summary

Problems solved by technology

However, the packers in the prior art often use axial compression or pressure expansion packs, which have complex structures, difficulty in setting and unsealing, and long cycles, which not only increase operating time, but also reduce work efficiency , thereby increasing the operating cost. Therefore, a new isolation technology is urgently needed to increase the operating speed, shorten the operating period, and improve the oil and gas development benefits

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