Downhole same-well injection-production gas-liquid separator

A gas-liquid separator, gas-liquid separation technology, applied in wellbore/well components, production fluid, earth-moving drilling and other directions, to achieve the effect of eliminating the impact

Active Publication Date: 2017-05-10
NORTHEAST GASOLINEEUM UNIV
View PDF9 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the electric submersible pump drainage and gas recovery lifting system is applied to a liquid-loaded gas well with a high gas-liquid ratio, due to the influence of the free gas contained in the well fluid on the lifting capacity of the multi-stage centrifugal pump, the phenomenon of air lock will occur. extreme phenomenon

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Downhole same-well injection-production gas-liquid separator
  • Downhole same-well injection-production gas-liquid separator
  • Downhole same-well injection-production gas-liquid separator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be further described below in conjunction with accompanying drawing:

[0029] Depend on Figure 1 to Figure 12 As shown, this kind of gas-liquid separator for downhole production and injection in the same well includes an upper casing 2, a liquid inlet casing 7 and a lower casing 16. Its unique feature is that the gas-liquid separator also has a gas-liquid separation main body 4, a gas Liquid separation cover 13 and gas-liquid outer spiral body 12 .

[0030] Wherein, the upper shell 2 has a connecting flange and an inner cavity, and a central through hole is opened vertically for the upper transmission shaft to pass through, and an exhaust hole 3 is opened on the upper part of the inner cavity;

[0031] The upper part of the liquid inlet casing 7 is provided with a liquid inlet hole 5, and the liquid inlet casing 7 and the upper casing 2 are connected by a flange; the lower end of the liquid inlet casing 7 and the top end of the lower casing ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a downhole same-well injection-production gas-liquid separator. The gas-liquid separator is combined with an electric submersible pump, an overhead type electric submersible pump drainage gas production lifting system is adopted, and downhole separation of gas-liquid mixed flow can be achieved. The downhole same-well injection-production gas-liquid separator is characterized in that the gas-liquid separator is further provided with a gas-liquid separator body, a gas-liquid separating cover and a gas-liquid outer spiral body; the gas-liquid separator body is located in a cavity body surrounded by an upper housing, a liquid inlet housing and a lower housing, and formed in the mode that a gas-liquid separating body upper transmission shaft, a gas-liquid separating guide section, a gas-liquid separating body reverse cone section and a gas-liquid separating body lower transmission shaft are connected in sequence from top to bottom; a guide vane is welded outside the gas-liquid separating guide section; a gas inlet is formed in the gas-liquid separating body reverse cone section, and the outlet of a gas hole channel is located in the inner cavity of the upper housing; the gas-liquid separating cover is a hollow inverted frustum, and the gas-liquid outer spiral body is also the hollow inverted frustum.

Description

technical field [0001] The invention relates to a downhole gas-liquid separation device used in the field of natural gas development and used for the production and injection of a submersible electric pump in the same well. Background technique [0002] During the production process of gas wells, the phenomenon of simultaneous production of gas and water is easy to occur. The water production of gas wells will cause liquid accumulation in gas wells, which will seriously damage the production of gas wells, and eventually cause the gas wells to stop production due to water flooding. For the problem of liquid accumulation in gas wells, drainage gas recovery technology is usually used. The electric submersible pump drainage and gas recovery lifting system has the advantages of large displacement range, high lift and convenient management. At present, the electric submersible pump drainage and gas recovery lifting system discharges the separated liquid to the ground for treatmen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21B43/38
CPCE21B43/38
Inventor 李森王尊策徐艳闫月娟张井龙温后珍
Owner NORTHEAST GASOLINEEUM UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap