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Oriented fracturing device for horizontal well

A directional fracturing and horizontal well technology, applied in drilling equipment, wellbore/well components, production fluids, etc., can solve problems such as the inability to meet the needs of horizontal well fracturing and stimulation, and avoid the direction of water layers or water injection lines. The effect of transforming reservoirs and good economic benefits

Active Publication Date: 2012-11-14
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional horizontal well multi-stage fracturing technology cannot meet the needs of this type of horizontal well fracturing reconstruction

Method used

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  • Oriented fracturing device for horizontal well
  • Oriented fracturing device for horizontal well
  • Oriented fracturing device for horizontal well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: Taking a horizontal well directional fracturing device as an example, the present invention will be further described in detail.

[0024] refer to Figure 1a . Horizontal well directional fracturing device, the first directional spray gun centralizer 1, the first counterweight shaft 2, the directional spray gun 3, the second counterweight shaft 4, and the second directional spray gun centralizer 5 are sequentially connected from top to bottom. The outer diameter of the centralizing part of the first directional spray gun centralizer 1 and the second directional spray gun centralizer 5 is 114mm. The lower joint 19 of the first directional spray gun centralizer 1 is screwed together with the center pipe 21 of the first counterweight shaft 2 . The collar 24 of the first counterweight shaft 2 is threadedly connected to one end of the directional spray gun 3, and the two axial protruding keys 25 of the joint 23 of the first counterweight shaft 2 are respective...

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Abstract

The invention discloses an oriented fracturing device for a horizontal well and is applied to oriented fracturing construction of horizontal wells of petroleum. The oriented fracturing device is characterized in that a lower joint of a first oriented spray gun centralizer is connected with a central pipe of a first counter weight shaft; a coupling of the first counter weight shaft is connected with one end of an oriented spray gun; two axial convex keys of the joint of the first counter weight shaft are respectively inserted into two axial key grooves of the oriented spray gun; the other end of the oriented spray gun is in threaded connection with the coupling of a second counter weight shaft; two axial convex keys of the joint of the second counter weight shaft are respectively inserted into two axial key grooves at the other end of the oriented spray gun; and a central pipe of the second counter weight shaft is in threaded connection with an upper joint of a second oriented spray gun centralizer. The oriented fracturing device has the effects that the nozzle of the oriented spray gun can be automatically adjusted to a direction at which fracturing transformation is required to be performed.

Description

technical field [0001] The invention relates to the technical field of petroleum exploitation, in particular to a downhole device for directional fracturing construction of a horizontal well. Background technique [0002] At present, the multi-stage fracturing technology for horizontal wells generally uses mechanical packers and sand blasters to ensure the implementation of the multi-stage fracturing process. For example, Chinese patent announcement number: CN101560877 discloses a horizontal well packer for staged fracturing. Process string, the structure is tubing string, hydraulic anchor, seat seal controller, straddle packer A, straddle packer B, straddle packer C, sliding sleeve sand blaster, sand blaster , guides and capillary lines. The tubing string is sequentially installed and connected with a hydraulic anchor, a seat seal controller, a straddle packer A, a sliding sleeve sand blaster, a straddle packer B, a sand blaster, and a straddle packer C and a guider, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B17/10E21B43/114
Inventor 赵新红胡书宝余东合马昌庆
Owner PETROCHINA CO LTD
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