Injection tool and application method for drainage and gas production in cooperation with downhole vortex tool

A technology of water drainage and gas recovery and tools, which is applied in the direction of production fluid, earthwork drilling and production, wellbore/well components, etc., and can solve problems such as unsatisfactory results

Active Publication Date: 2019-03-12
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tests have shown that downhole vortex tools combined with drainage techniques such as gas lift and bubble drainage can make intermittent gas wells produce continuously, but the effect of using this technique alone for low-yield fluid-loaded continuous production gas wells is not ideal

Method used

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  • Injection tool and application method for drainage and gas production in cooperation with downhole vortex tool
  • Injection tool and application method for drainage and gas production in cooperation with downhole vortex tool

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Embodiment Construction

[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] 1. Assembly

[0024] Such as figure 1 As shown, the fishing head 1 is connected to the upper end of the center pipe 3 by thread; the diffuser pipe 2, the throat pipe 4, the throat distance pipe 6 and the nozzle support 8 are installed in the center pipe 3 in sequence, and the nozzle 7 and the nozzle support The tube 9 is pre-loaded into the nozzle support 8 to form a combination; the lower end of the central tube 3 is connected with the lower joint 10 through a screw, and the lower joint 10 is connected with the cone 11 through a screw; the spring body 13 is loaded from the small end of the cone 11, It is fixed by the shear pin 12; the spring 15 is connected to the spring body 13 by th...

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Abstract

The invention provides a spraying tool capable of being matched with an underground eddy current tool to realize water drainage and gas production and an application method of the spraying tool. The spraying tool capable of being matched with the underground eddy current tool to realize water drainage and gas production mainly consists of a salvage head (1), a diffusion pipe (2), a center pipe (3), a throat pipe (4), a pin (5), a nozzle position pipe (6), a spray nozzle (7), a spray nozzle support seat (8), a spray nozzle support pipe (9), a lower joint (10), a cone body (11), a shearing pin (12), a spring body (13), a spring pin (14) and a spring (15). The specific flowing state that the gas is in the center and the liquid flows along the pipe wall formed by the underground eddy current tool is used; the self energy of natural gas and a spray nozzle of a sprayer are used for realizing throttling and pressure reduction, so that the natural gas flow forms a pressure difference region in a mixing room; the well tube inner wall liquid flow is sucked; and the well tube liquid accumulation is reduced.

Description

technical field [0001] The invention relates to the technical field of oil field gas recovery, in particular to a tool and an application method for applying injection technology to drainage and gas recovery in the process of natural gas recovery, belonging to the field of downhole tools. Background technique [0002] The Sulige Gas Field is a typical "three-low" gas field with low pressure, low permeability, and low abundance. With the development of the gas field, the formation energy decreases, the gas production of gas wells decreases, and there is a large amount of fluid accumulation in the wellbore during the production process, and the fluid accumulation wells are increasing year by year. It is difficult to maintain the normal and stable production of the gas field. In response to the increasing number of liquid-loaded wells in gas fields, in order to give full play to the production capacity of gas wells, a series of drainage and gas recovery technologies such as foa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/38
Inventor 肖述琴付钢旦刘双全白晓弘杨旭东卫亚明樊莲莲刘峰陈勇
Owner PETROCHINA CO LTD
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