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Light ball seat

A ball-seat, lightweight technology, applied in the fields of production fluids, wellbore/well components, earth-moving drilling, etc., can solve problems such as plugging the wellbore, and achieve the advantages of increasing friction, light and fine debris, and eliminating the risk of wellbore plugging. Effect

Pending Publication Date: 2020-10-09
VERTECHS OIL & GAS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: how to improve the drilling and grinding efficiency of the ball seat, and at the same time eliminate the risk of drilling and grinding debris blocking the wellbore

Method used

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Embodiment Construction

[0049] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0050] The cross-sectional view of the ball seat and the schematic diagram of the external structure of this embodiment can be found in figure 1 and figure 2 , this embodiment provides a kind of ball seat, which is used for segmental transformation of oil and gas wells, including lower joint 01, slips 02, seal 04 and center pipe 05, the center pipe 05 is in the shape of a truncated cone, and the outer diameter of the center pipe 05 is relatively small. An outer friction layer 053 is provided on the outer side of the small end, and a sealing port is provided ...

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Abstract

The invention provides a light ball seat. The light ball seat comprises a central pipe, a sealing piece, a slip and a lower connector, the central pipe is in a circular truncated cone shape, an outerfriction layer is arranged on the outer side of the end, with the smaller outer diameter, of the central pipe, a plugging opening is formed in the end, with the larger outer diameter, of the central pipe, the sealing piece and the slip are sequentially connected to the outer side of the central pipe in a sleeving mode, the end part of the of the end, with the smaller outer diameter, of the centralpipe is located in the slip, a first inner friction layer matched with the outer friction layer is arranged on the inner side of the sealing piece, one end of the slip abuts against one end of the sealing piece, the other end of the slip is welded to one end of the lower connector, a second inner friction layer matched with the outer friction layer is arranged on the inner side face of the slip,a setting tool connecting structure is arranged in the lower connector, and the central pipe, the slip and the lower connector are made of light magnesium alloy materials. The provided ball seat is high in sealing reliability during working, the ball seat is compact, short and small in design and is made of the light magnesium alloy materials, so that the drilling and grinding efficiency is improved; and after work is finished, return is easy, and the risk of blocking a shaft is eliminated.

Description

technical field [0001] The invention relates to the technical field of downhole tools, in particular to a lightweight ball seat. Background technique [0002] In the staged fracturing operation of oil and gas wells, composite bridge plugs or cast iron bridge plugs are usually used as staged tools, and these two types of bridge plugs have their own advantages. However, after the composite bridge plug fracturing operation is completed, these composite bridge plugs must be drilled and ground by coiled tubing to form a full-diameter wellbore. Due to structural and material limitations, drilling and grinding takes a long time and the drilling and grinding operation is difficult. , The length of the bridge plug is long, the density is high, the debris obtained by drilling and grinding is difficult to return, and there is a risk of blocking the wellbore. [0003] The cast iron ball seat used in the staged fracturing operation is usually a large-diameter bridge plug, which is chara...

Claims

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Application Information

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IPC IPC(8): E21B34/14E21B43/26
CPCE21B34/14E21B43/26
Inventor 曾琦军
Owner VERTECHS OIL & GAS TECH CO LTD
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