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Sliding sleeve type fracturing module, device including the module and method of using the device

A sliding sleeve type, fracturing technology, applied in the direction of wellbore/well valve device, earthwork drilling, wellbore/well components, etc., can solve the problem that the sliding sleeve cannot be closed, and the pipe string cannot be moved without limiting the number of stages Segmentation, the inability to realize unlimited stages of fracturing and other issues, to achieve the effect of convenient operation

Active Publication Date: 2015-04-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This device cannot realize staged fracturing with unlimited stages
[0009] In addition, the "Single-Layered Fracturing and Combination Production String Technology for Oil and Gas Wells" disclosed in Chinese patent application CN101418681, and the "Multilayer Fracturing Pipe Strings for Oil and Natural Gas Wells" disclosed in Chinese patent application CN201144682 all use ball-opening sliding sleeves. In this way, it is not possible to segment the fixed string with unlimited series, and it is also not possible to close the sliding sleeve

Method used

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  • Sliding sleeve type fracturing module, device including the module and method of using the device
  • Sliding sleeve type fracturing module, device including the module and method of using the device
  • Sliding sleeve type fracturing module, device including the module and method of using the device

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Embodiment Construction

[0055] The present invention will be further described below in conjunction with accompanying drawing.

[0056] Figure 1a Shown is a composite sliding sleeve 10 of a sliding sleeve type fracturing assembly according to the present invention, which includes a fixed outer cylinder 11 and an inner cylinder 12 connected to the inner wall of the outer cylinder 11 through shear pins 13 . Wherein, a pump opening valve 14 is provided on the outer cylinder 11 , and a first tooth-shaped member 15 is provided on the inner wall of the inner cylinder 12 . exist Figure 1a In the illustrated embodiment, the first toothed member 15 is formed in one piece with the inner barrel 12 . In one embodiment, a positioning groove 16 and a positioning piece 17 are provided on the mating surfaces of the outer cylinder 11 and the inner cylinder 12 . The positioning groove 16 and the positioning piece 17 are arranged to be in Figure 1a In the shown initial state, they are not engaged with each other, b...

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Abstract

The invention relates to a sliding sleeve type fracturing module; the sliding sleeve type fracturing module comprises a composite sliding sleeve, an opening tool and a driving tool, wherein the composite sleeve, the opening tool and the driving tool can automatically coordinate with each other through toothed pieces, which are placed on the composite sleeve, the opening tool and the driving tool, so as to open the composite sliding sleeve. The invention further relates to a sliding sleeve type fracturing device, which comprises the plurality of composite sliding sleeves, the opening tools and the driving tools, wherein only unique coordination among the composite sliding sleeves, the opening tools and the driving tools can be achieved. The invention further relates to a method using the sliding sleeve type fracturing device.

Description

technical field [0001] The invention relates to a sliding sleeve type fracturing assembly, in particular to a sliding sleeve type fracturing assembly which can be switched selectively. The invention also relates to a device comprising several such assemblies, as well as a method of using the device. Background technique [0002] Sliding sleeve is a key tool for staged fracturing of vertical and horizontal wells in oil and gas fields. This type of sliding sleeve includes a sliding sleeve outer cylinder and a core pipe arranged in the sliding sleeve outer cylinder, wherein the sliding fit between the sliding sleeve outer cylinder and the core pipe is a sliding fit, and a sandblasting port is arranged on the wall of the sliding sleeve outer cylinder, and The upper port has a sealing mating surface for receiving the activation ball. The sliding fit between the outer cylinder of the sliding sleeve and the core tube is opened by the actuating ball. The actuating ball and the sea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B34/14E21B43/26
Inventor 甘振维黄秋生任山李光泉吴姬昊
Owner CHINA PETROLEUM & CHEM CORP
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