Radial-inserting and radial-throttling type throttler and balance sieve tube employing same

Abstract

The invention provides a radial-inserting and radial-throttling type throttler and a balance sieve tube employing the same, wherein the throttler is used for controlling liquid flow of a liquid channel, and comprises a throttler main body and a throttler supporting disc; overflowing parts are radially arranged in an overflowing part mounting hole on the throttler main body, and the overflowing parts include a non-porous type and a porous type, and when the overflowing parts belong to the porous type, different amounts of overflowing holes are formed on the overflowing parts; the balance sieve tube comprises the liquid channel, namely a base pipe, a composite filtering sleeve component and the radial-inserting and radial-throttling type throttler, the composite filtering sleeve component and the throttler are coaxially sleeved on the periphery of the base pipe, and the composite filtering sleeve component comprises an inner protective jacket, a multi-layer filtering wire mesh and an external protective jacket. With rational combination of the overflowing parts having different amounts of holes, the overflowing holes on the base pipe can easily change between opening and closing and become larger and smaller, thereby realizing the purpose of throttling.

Description

technical field [0001] The invention belongs to the technical field of flow balance devices, and relates to a restrictor and a balance screen containing the restrictor, in particular to a radially inserted radial flow-limiting restrictor and the restrictor containing the restrictor Balanced screen. Background technique [0002] In the process of oil and natural gas extraction, the balanced screen is used as a downhole production device for sand control filtering and throttling adjustment to extend the balanced pressure drop of the horizontal well section. The production capacity of the horizontal section and the purpose of prolonging the life of the horizontal well ultimately enable the oil well to achieve the maximum economic benefit. [0003] There are many problems in the production process of horizontal wells, especially in the development process of horizontal well side and bottom water oil and gas reservoirs. . [0004] A balanced screen tube is disclosed in the pri...

AI Technical Summary

Problems solved by technology

Although the balanced screen can improve the reliability of oil well production while ensuring the ability to adjust the output flow rate, its technical defects are: 1. The spiral flow channel is easy to cause blockage; 2. The oil well data must be obtained in advance To design the flow channel, so as to form a fixed form, which is not conducive to the adjustment of oil well production site; 3. The product structure is complex, which is not conducive to processing

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