Active packer

A packer, active technology, used in engine sealing, engine components, water conservancy projects, etc., can solve problems such as water depth limitation, splitter damage, large workload, etc., to improve sealing ability and anti-damage ability, The effect of reducing structural stress concentrations and reducing strength requirements

Active Publication Date: 2021-10-15
OFFSHORE OIL ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]The purpose of the present invention is to provide an active packer for the deficiencies of the prior art, which solves the problem of complex system and workload in the background art. Large size, complex operation, high cost, high hazard, limited by water depth, and easy to cause damage and failure of the splitter

Method used

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] see Figure 1-4 , in this embodiment: an active packer, including a sleeve 1, a steel pipe string 2 is arranged inside the sleeve 1, a composite cylinder 3 is arranged in the middle of the sleeve 1 and the steel pipe string 2, and the composite cylinder 3 One side of the high-strength connection layer 4 is provided with a high-strength connection layer 4, and one end of the high-strength connection layer 4 is provided with a low-strength connection laye...

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Abstract

The invention discloses an active packer. The active packer comprises a sleeve, a steel pipe column is arranged in the sleeve, a composite barrel is arranged between the sleeve and the steel pipe column, a high-strength connecting layer is arranged on one side of the composite barrel, a low-strength connecting layer is arranged at one end of the high-strength connecting layer, a double-T-head back attaching layer is arranged on one side of the high-strength connecting layer, a pressing plate is arranged at one end of the double-T-head back pasting layer, a pressing device is arranged on one side of the pressing plate, a bolt extending into the pressing plate is arranged on one side of the pressing device, an air nozzle extending to the outer side of the sleeve is arranged on one side of the composite barrel, and a flexible inner barrel is arranged in the composite barrel. According to the active packer, by arranging the flexible inner cylinder, the framework layer, the outer protection layer, the high-strength connecting layer, the low-strength connecting layer and the back pasting layer, the active packer can provide supporting force far larger than the gravity of cement paste, and the sealing capacity and the damage resistance of the packer are improved.

Description

technical field [0001] The invention relates to the technical field of offshore jacket installation, in particular to an active packer. Background technique [0002] At present, offshore fixed platforms are generally composed of upper modules and lower jackets. The fixing of the jacket to the seabed is generally accomplished through the fixed connection between the sleeve placed at the bottom of the main leg of the jacket and the steel pile passing through the sleeve and driven into the seabed, and the inner diameter of the sleeve and the outer diameter of the pile The fixation is achieved through the form of cement grouting. There are two construction methods for the offshore jacket, and the connection between the jacket and the steel piles is fixed by cement slurry bonding. Due to the particularity of offshore operations and the easy flow of cement slurry, a packer product needs to be installed in the lower part of the annular space between the steel pile and the sleeve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B17/00E02D5/22E02D31/00F16J15/52
CPCE02B17/00E02D5/22E02D31/00F16J15/52E02B2017/0056
Inventor 李怀亮李新超于文太马美琴孙建帮刘顺庆李立涛徐京阔秦立成聂晓明石臣刚张亚生尹婷
Owner OFFSHORE OIL ENG
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