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An elastic lock sleeve sand blaster

A technology of elastic lock and sand blaster, which is applied in wellbore/well components, production fluid, earthwork drilling and production, etc. It can solve the problems of tubing overflow liquid injection, sand blaster without sliding sleeve locking mechanism, etc., to reduce pollution Effect

Active Publication Date: 2022-03-08
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention provides an elastic locking sleeve sand blaster, which solves the problem that the existing sand blaster does not have a sliding sleeve locking mechanism, resulting in overflow and spraying of the oil pipe after pressing

Method used

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  • An elastic lock sleeve sand blaster
  • An elastic lock sleeve sand blaster
  • An elastic lock sleeve sand blaster

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Embodiment Construction

[0038] The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. However, the present invention can be fully understood by those skilled in the art about the parts that are not described in detail.

[0039] In addition, those of ordinary skill in the art should understand that the provided drawings are only for illustrating the objects, features and advantages of the present invention, and the drawings are not actually drawn to scale.

[0040] At the same time, unless the context clearly requires, the words "include", "include" and other similar words in the entire specification and claims should be interpreted as an inclusive meaning rather than an exclusive or exhaustive meaning; that is, "include but not limited to the meaning of ".

[0041] figure 1 It is a schematic structural v...

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PUM

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Abstract

The invention discloses an elastic lock sleeve sand blaster, which is used for multi-layer fracturing of a stationary pipe string, comprising: a central pipe (4), which has a sand outlet; The sleeve (12) goes down to the center pipe (4) of the next stage, and is used to block the sand outlet of the center pipe (4) of the next stage; it is characterized in that: the center pipe (4) There is a locking mechanism below; the locking mechanism is used to lock the sliding sleeve (12) of the upper stage in the center pipe (4) of the lower stage, and make the sand outlet always press It is in the closed state; it solves the problem that the existing sand blaster does not have a sliding sleeve locking mechanism, resulting in overflow and spraying of the oil pipe after pressure.

Description

technical field [0001] The invention relates to a sand blaster used for preventing liquid spraying in the oil pipe when the fracturing pipe string is raised in the field of multi-layer fracturing of the fixed pipe string in the oil field. Background technique [0002] Hydraulic fracturing is an effective measure to increase production and injection in oilfields. It uses high-pressure pump trucks to inject fluid into the formation, cracks open and then filled with proppant, so as to ensure effective circulation channels and increase oil production of a single well. After oil-water well fracturing measures, it takes a certain amount of time for the formation pressure to diffuse, so the downhole pressure is high. During the conventional operation of tubing tripping, the downhole dirty oil and sewage will be pushed to the wellhead by high pressure. If there are no preventive measures at the wellhead, it will overflow The outflow of a large amount of dirty oil and sewage not only...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/267
CPCE21B43/267
Inventor 兰乘宇刘跃宝张晓君何彬
Owner PETROCHINA CO LTD