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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
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  • Claims
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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 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

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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Embodiment Construction

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

[0016] according to Figure 1-2 , the surface hydraulic control airbag type all-metal seal packer, the collar 1 is threaded to the upper end of the upper joint 2, the lower end of the upper joint 2 is threaded to the center pipe 5, and the adjustment ring 3 is connected to 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 pressed against the adjusting ring 3, and the lower end is pressed against the lower joint 6, and the lower joint 6 is threadedly connected with the central pipe 5. The 1 / 4" NPT connector 7 is installed on the upper and lower ends of the setting airbag 4 and is threaded. The 1 / 4" hydraulic con...

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Abstract

The invention discloses a ground hydraulic control airbag type full-metal sealing packer which comprises a center pipe and a setting airbag, and the center pipe is sleeved with the setting airbag. The interior of the setting airbag is a cylindrical cavity. The two axial end faces of the setting airbag are provided with axial liquid flowing channels communicating with the cylindrical cavity. An outer port of each liquid flowing channel is provided with a hydraulic control pipeline joint. The setting airbag is machined in a 3D integral printing mode and is made of 316 stainless steel metal with good ductility and elasticity, and the inner wall and the outer wall of the setting airbag are coated with metal material layers with good airtightness and adhesion. The upper end and the lower end of the center pipe are provided with an upper joint and a lower joint correspondingly. The upper joint and the lower joint are provided with hydraulic control pipeline channels communicating with the liquid flowing channels. Packing of oil reservoirs is achieved in a hydraulic control full-metal sealing mode, and a guarantee is provided for long-term effective slice 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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