Trigger type sliding sleeve opening and closing tool

Abstract

The invention discloses a trigger type sliding sleeve opening and closing tool. The trigger type sliding sleeve opening and closing tool comprising a rod-shaped body, a locking block assembly fixedly arranged on the rod-shaped body in a sleeving mode and capable of being elastically opened in the radial direction, a conical sleeve movably arranged on the rod-shaped body in a sleeving mode and matched with the locking block assembly in the axial direction to limit radial opening of the locking block assembly, a thrust spring arranged between the locking block assembly and the conical sleeve, a sliding block movably arranged on the rod-shaped body and capable of moving in the radial direction and axially limits upward movement of the conical sleeve, and a weighting assembly movably arranged on the rod-shaped body in a sleeving mode, temporarily fixed through an elastic positioning component and capable of limiting radial movement of the sliding block; and when an elastic positioning part is stressed to relieve positioning of the weighting assembly, the weighting assembly moves upwards to release limitation on the sliding block, the conical sleeve is pushed by the thrust spring to move upwards to release limitation on the locking block assembly, and the locking block assembly is elastically opened. According to the tool, after passing through a small-diameter channel, the tool can be opened at a designated position, and opening and closing operation is conducted on a lower sliding sleeve with the large-diameter opening and closing requirement.

Description

technical field [0001] The invention belongs to a sliding sleeve switch tool in the field of oil and gas exploitation, in particular to a trigger type sliding sleeve switch tool. Background technique [0002] In modern oil and gas extraction, the application of sliding sleeves is very common in the oil and gas extraction process, but in the actual extraction process, various problems are still encountered. A large part of the problem is that the sliding sleeve limits the outer diameter of the supporting switch tool, so that the diameter of the upper oil pipe must meet the requirements for the smooth passage of the switch tool. However, when the oil pipe channel must be narrowed due to the electric submersible pump, dual channels or other reasons, the common switch tool cannot meet the operation requirements, the operation is difficult, or the operation risk is increased. [0003] Systematic research on the technology of sliding sleeve switch tools at home and abroad, all ki...

AI Technical Summary

Problems solved by technology

A large part of the problem is that the sliding sleeve limits the outer diameter of the matching switch tool, so that the diameter of the upper oil pipe must meet the requirements for the smooth passage of the switch tool

However, in the case where the passage of the oil pipe must be narrowed due to the electric submersible pump, double channel or other reasons, ordinary switch tools cannot meet the operation requirements, the operation is difficult, or the operation risk is increased

[0003] Systematic research on the technology of sliding sleeve switch tools at home and abroad, all kinds of sliding sleeve switch tools that can perform switching operations at designated positions require a certain diameter step to start, which cannot fully realize the working environment of small up and down big, and cannot effectively reduce risk, which is not conducive to the improvement of the reliability and efficiency of the entire well completion operation

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