Slide switch closing tool

Abstract

The invention relates to a slide sleeve switch closing tool which comprises a central pipe. An upper connecting part and a lower connecting part are disposed on the central pipe. An upper connector and an elastic claw are sleeved on the central pipe. A first annular inner flange is disposed on the lower inner wall of the upper connector. An inner annular groove is arranged above the first annular inner flange. The lower portion of the elastic claw is annular. The middle portion and the upper portion of the elastic claw are provided with a plurality axial notches. An outer annular flange and a first outer annular groove are arranged on the upper portion of the elastic claw. A second outer annular groove is arranged in the middle of the elastic claw. The backs of two side walls of the elastic claw are conical. The upper portion of the elastic claw is provided with a lower annular end face perpendicular to an axis of the central pipe. A first lower connector is connected to the lower portion of the elastic jaw. An upper shaft shoulder and a lower shaft shoulder are disposed on the central pipe. The slide sleeve switch closing tool good in universality, wide in application range and applicable to slide sleeves of same specification and different structural forms, sand blocking and on-site operation risks can be avoided, operation reliability is improved greatly, and in-place action, timely closing and sand preventing of the slide sleeve switch closing tool are guaranteed.

Description

Technical field [0001] The invention belongs to the technical field of oilfield development and production, and particularly relates to a sliding sleeve switch closing tool. Background technique [0002] In the current well-known oilfield development, with the increase in drilling and production of deep wells and complex wells, especially the continuous innovation and improvement of completion techniques, higher requirements are put forward for the functions and use of completion tools. Sliding sleeve switch and closing tool are necessary sand control service tools in gravel packing and sand control operations, mainly for closing and opening the sliding sleeve. Traditional sliding sleeve switch and closing tools have the following shortcomings: First, the traditional sliding sleeve opening and closing tools are specially designed for a specific sliding sleeve. It has poor versatility and narrow application range, and cannot meet the same specifications and multiple structures. S...

AI Technical Summary

Problems solved by technology

The traditional sliding sleeve switch and closing tool has the following defects: First, the traditional sliding sleeve opening and closing tool is specially designed for a specific sliding sleeve, which has poor versatility and narrow application range, and cannot meet various structural forms of the same specification. slip sleeve use

Second, its structural design is complex. During gravel filling operations, it is easy to accumulate sand and gravel at the opening and closing tool of the sliding sleeve, causing sand jams, which brings great risks to on-site operations.

Third, the reliability of the elastic claw mechanism of the traditional sliding sleeve opening and closing tool is not good, and the effective life is short. In the gravel filling operation, the sliding sleeve opening and closing tool cannot be guaranteed to move in place. There is a risk that the sliding sleeve cannot be closed, resulting in Sand control failure

Images