Double-channel injection and production switching device

Abstract

The invention relates to a double-channel injection and production switching device, which is characterized by comprising an upper oil pipe joint, a Y-shaped joint and a lower oil pipe joint, wherein the upper outlet of the upper oil pipe joint is connected with the Y-shaped joint, the lower oil pipe joint is connected with the right outlet of the Y-shaped joint, an electric pump protecting barrel is connected to the left outlet of the Y-shaped joint, an upper valve cover is arranged at the upper part of the left outlet of the Y-shaped joint, the upper valve cover and the channel wall of the left outlet of the Y-shaped joint form a first plate valve, and a second plate valve consisting of a lower valve body and a lower valve cover is arranged at the upper part of the right outlet of the Y-shaped joint. The device has the advantages that: during steam injection and fluid production, the double-channel injection and production switching device can conveniently and alternately finish steam injection and fluid production of a thermal production well without lifting a lower tubular column, so that the workload of lifting the lower tubular column is greatly reduced, the production cost is reduced, and the time efficiency and the economic benefit during oil well production are improved, so the device is applicable to exploitation of a thick oil well.

Description

technical field [0001] The invention belongs to the field of oil exploitation equipment, in particular to a dual-channel injection-production switching device. Background technique [0002] Steam injection thermal recovery is one of the main recovery methods in heavy oil fields. At present, when the on-site heavy oil wells are subjected to steam injection thermal extraction, the oil pipes, oil well pumps and other strings can be lowered for normal oil production after the steam injection is completed. After the current round of oil production is over, the next round of steam injection and oil production will be carried out by raising the tubing, oil well pump and other strings. Therefore, each heavy oil well needs to be lifted and lowered twice for each cycle of steam injection-liquid production, which not only makes the production process of oil production very cumbersome, but also has a large amount of work and high cost, and will affect the Normal production and economi...

AI Technical Summary

Problems solved by technology

Therefore, each heavy oil well needs to be lifted and lowered twice for each cycle of steam injection-liquid production, which not only makes the production process of oil production very cumbersome, but also has a large amount of work and high cost, and will affect the Normal Production and Economic Benefits of Oil Wells

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