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A multiple switch sliding sleeve device

A sliding sleeve and switch technology, which is used in wellbore/well valve devices, wellbore/well components, earth-moving drilling, etc. The effect of ensuring sealing and improving reliability

Active Publication Date: 2011-11-30
XINJIANG SINOGASOLINEEUM ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In well testing and completion, especially in the staged stimulation and production process of carbonate horizontal wells, due to the heterogeneity of carbonate rocks and the geological characteristics of bottom water, the stimulation scale of each stage is different. Due to the different heights of the wellbore trajectory from the groundwater body and the different activity levels of the water body, the entire horizontal section is often flooded due to a section of water in the later stage of production, and there is no way to find and block the water outlet point, resulting in oil wells being damaged. Discontinued and scrapped

Method used

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  • A multiple switch sliding sleeve device
  • A multiple switch sliding sleeve device
  • A multiple switch sliding sleeve device

Examples

Experimental program
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Embodiment 1

[0031] Such as Figure 1-5 As shown, a multiple switch sliding sleeve device of the present invention includes a switch sliding sleeve and a switching tool. The sliding sleeve includes a switch sliding sleeve upper joint 1, a sliding sleeve 4, an outer cylinder 5, and a hole bushing 6 connected in sequence. And the switch sliding sleeve lower joint 8, the switch includes the switch upper joint 13, the mandrel 15, the spring 16, the limit sleeve 19 and the guide cone 22 connected in sequence;

[0032] One end of the upper joint 1 of the switch sliding sleeve is provided with an external thread, and the root of the thread is provided with a stop step. The inner side of the upper joint 1 of the switch sliding sleeve is far away from the sliding sleeve 4. There is a switch pouring slope on the inner side, and the inner side of the other end is designed with a limit step; the sliding sleeve 4 The inner sides of both ends are respectively provided with positioning grooves for switch...

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PUM

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Abstract

The invention relates to a segmentally improved underground tool device, in particular to a repeated switch sliding sleeve device which comprises a switch sliding sleeve and a switch tool, wherein the switch sliding sleeve comprises a switch sliding sleeve upper joint, a sliding sleeve, an outer barrel, an opening bushing and a switch sliding sleeve lower joint which are connected with one another sequentially; the switch tool comprises a switch upper joint, a central spindle, a spring, a limiting sleeve and a tap which are connected with one another sequentially; and a switch can be placed in the sliding sleeve to control switching-on and switching-off of the switch sliding sleeve. By the repeated switch sliding sleeve device, a connection state or a disconnection state of each section of flow channel can be selected randomly, so that a full drift diameter of a pipe column is realized and the repeated switch sliding sleeve device is easy to operate.

Description

Technical field: [0001] The invention relates to a downhole tool device for segmental reformation, in particular to a downhole tool for segmental reformation of a horizontal well and for finding and blocking water. Background technique: [0002] In well testing and completion, especially in the staged stimulation and production process of carbonate horizontal wells, due to the heterogeneity of carbonate rocks and the geological characteristics of bottom water, the stimulation scale of each stage is different. Since the height of the wellbore trajectory from the groundwater body is different, and the activity of the water body is different, the entire horizontal section is often flooded due to a section of water in the later stage of exploitation, and there is no way to find and block the water outlet point, resulting in oil wells Discontinued and scrapped. Invention content: [0003] The purpose of the present invention is to provide a multiple switch sliding sleeve devic...

Claims

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Application Information

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IPC IPC(8): E21B34/14
Inventor 朱进府杨晓辉张福祥李志国王宁彭建新杨向同张浩
Owner XINJIANG SINOGASOLINEEUM ENG
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