Ball injector and thickened oil injection and production integrated pipe column using same

Abstract

The invention provides a ball injector and a thickened oil injection and production integrated pipe column using the same. The ball injector comprises a ball loading pipe and a ball outlet joint, wherein the ball outlet joint is connected below the ball loading pipe; an upper baffle is arranged at the upper end of the ball loading pipe and a lower baffle is arranged at the lower end of the ball loading pipe; the lower baffle is made of a hot melting material; a ball outlet hole is formed in the side wall of the ball outlet joint; a guiding element is arranged in the ball outlet joint; a ball outlet baffle is hinged at the ball outlet hole; a stopping surface which is in stopping cooperation with the ball outlet baffle in the internal-external direction so as to prevent the ball outlet baffle from swinging inwards is arranged at the ball outlet hole; and an elastic element which applies elastic force on the ball outlet baffle to ensure that the ball outlet baffle is in stopping cooperation with the stopping surface to keep a closed state is also arranged at the ball outlet hole. The injection operation and production operation can be realized through lowering the pipe column for once, so that the operation is simplified; a ball receiver is saved and the ball injector is only responsible for ball injection and the injected ball is not recovered any more; and the outer diameter ofthe ball injection can be as small as possible to be suitable for the ball injection operation of the casing deformation wells and small cased wells, so that the application range is wide.

Description

technical field [0001] The invention relates to a ball pitcher and a heavy oil injection-production integrated pipe string using the ball pitcher. Background technique [0002] The main development methods of heavy oil reservoirs in China are steam huff and puff or steam flooding. With the increase of heavy oil thermal recovery huff and puff cycle, formations are repeatedly stimulated by high-intensity steam huff and puff, and steam channeling frequently occurs. At the same time, due to the influence of permeability difference and steam overlay, during steam injection, the high-permeability layer is a strong vapor-absorbing layer, and the low-permeability layer is a weak vapor-absorbing layer, or even does not absorb steam. With the increase of the number of steam huff and puff cycles, the interwell steam channeling interference phenomenon will further appear, and the steam channeling will intensify, which will have a great impact on the production. At present, optional inj...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a heavy oil injection-production integrated pipe string to solve the problem in the prior art that the selective injection process pipe string needs to be lifted out first and then recovered after steam injection, resulting in a long operation period; the present invention It is also an object to provide a pitcher that can continue to return without having to take it out

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