Ground hydraulic control airbag type full-metal sealing packer

An airbag-type, all-metal technology, applied in the directions of sealing/isolation, measurement, wellbore/well components, etc., can solve problems such as lost oil layers, aging and fracture of sealing rubber rings, failure of packer seals, etc., to achieve Avoid the effects of easy failure, low damage, high reliability and serviceability

Pending Publication Date: 2017-08-08
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when this type of packer works in downhole conditions, it is subject to the constraints of environmental factors such as well fluid, temperature, pressure, stress state and casing quality, and it is prone to aging

Method used

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  • Ground hydraulic control airbag type full-metal sealing packer
  • Ground hydraulic control airbag type full-metal sealing packer

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[0015] The detailed description and technical content of the present invention are described below in conjunction with the accompanying drawings. However, the accompanying drawings are only for reference and description, and are not intended to limit the present invention.

[0016] according to Figure 1-2 , the ground hydraulically controlled airbag type all-metal seal packer, the coupling 1 is threadedly connected to the upper end of the upper joint 2, the lower end of the upper joint 2 is threadedly connected to the central pipe 5, and the adjusting ring 3 is connected to the outer end of the lower end of the upper joint 2. Threaded connection, the setting airbag 4 is sleeved on the central pipe 5, while the upper end of the setting airbag 4 is placed on the adjusting ring 3, and the lower end is placed on the lower joint 6. The 1 / 4" NPT joint 7 is installed on the upper end and the lower end of the setting airbag 4, and is threadedly connected. The 1 / 4" hydraulic control l...

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Abstract

The invention discloses an all-metal seal packer of ground hydraulic control airbag type, which includes a central tube and a setting airbag sleeved on the central pipe. The end face of the shaft is provided with liquid flow channels which are all connected to the annular cylindrical cavity in the axial direction, and the outer port of the liquid flow channel is provided with a hydraulic control pipeline joint. The setting airbag is processed by 3D integral printing, and the setting airbag itself is made of 316 stainless steel metal material with good ductility and stretchability, and the inner and outer walls of the setting airbag are coated with a metal material layer with good sealing and adhesion. The upper and lower ends of the central tube are respectively connected to an upper joint and a lower joint, and both the upper joint and the lower joint are provided with a hydraulic control pipeline channel leading to a liquid flow channel. The invention adopts a liquid-controlled all-metal sealing method to realize oil layer isolation, and provides guarantee for long-term effective layered mining of high-temperature and high-pressure oil-water wells.

Description

technical field [0001] The invention relates to a downhole tool for oil and water well completion construction; in particular, it is a surface hydraulic control air bag type all-metal sealing packer. Background technique [0002] The packer is an essential downhole tool for oil field separate production and injection well completion process, and the packer widely used at present adopts the mechanical design of the combination of rubber rubber ring seal between metal parts and the rubber cylinder that plays the role of isolation. However, when this type of packer works in downhole conditions, it is subject to the constraints of environmental factors such as well fluid, temperature, pressure, stress state and casing quality, and it is prone to aging and fracture of the sealing rubber ring and wear and tear of the rubber tube, which eventually leads to the failure of the seal. The overall seal of the spacer fails, thus losing the role of layered production of oil layers. There...

Claims

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Application Information

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IPC IPC(8): E21B33/12E21B47/06
CPCE21B33/1208E21B47/06
Inventor 王增林孙宝全谷开昭安百新张福涛聂文龙曲晓峰任从坤赵爽张剑田俊许玲玲李德忠郭林园
Owner CHINA PETROLEUM & CHEM CORP
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