Flexible screen pipe with automatic reset function

Abstract

The invention discloses a flexible screen pipe with an automatic reset function, which relates to the technical field of flexible screen pipes and specifically comprises at least two screen pipes, a reset element and a fixing device, the two ends of each screen pipe are provided with at most two ball heads, namely one end of at least one screen pipe in the two connected screen pipes is provided with a ball head. The two ends of the reset element are connected with the interiors of the two screen pipes correspondingly, reset force is provided for the screen pipes, and the axes of the screen pipes are kept consistent. The fixing device connects the end, provided with the ball head, of one screen pipe with any end of the other screen pipe. Through the arrangement of the reset element, after the flexible screen pipe enters the horizontal section, the axes of all the screen pipes are kept consistent under the action of the reset element, torsion is not likely to happen, the operation resistance is reduced, and the extension length is increased.

Description

technical field [0001] The invention relates to the technical field of flexible screen tubes, in particular to a flexible screen tube with automatic reset function. Background technique [0002] Ultra-short-radius horizontal well and lateral well technologies are effective technologies to improve single well productivity, develop thin oil layers with complex oil-water relationships, and tap the remaining reservoirs near the wellbore. One of the core technologies is sand control technology during well completion operations. However, due to the large build-up rate and small curvature radius of ultra-short-radius wells, conventional rigid screens cannot be run into the well, so it is a better choice to use flexible screens for sand control. [0003] After entering the horizontal section, the conventional flexible screen is swayed by resistance, which leads to the accumulation of frictional force, which seriously affects the downhole operation ability of the flexible screen. S...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a flexible screen with an automatic reset function in view of the problem that the current conventional flexible screen is swayed by resistance after entering the horizontal section, causing the friction force to accumulate and increase, which seriously affects the downhole operation capability of the flexible screen. After the screen pipes enter the horizontal section, under the action of the reset element, the axes of the screen pipes are kept consistent, and the twisting is not easy to occur, the running resistance is reduced, and the extension length is increased, which solves the above problems

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