Unlock instant, AI-driven research and patent intelligence for your innovation.

Graded starting device for gas-lift ball gas-lift producing well

A technology for starting devices and oil production wells, which is applied in the direction of production fluid, earthwork drilling, wellbore/well components, etc., which can solve the problems of low gas lift efficiency and high energy consumption, and achieve high efficiency and fast liquid drainage

Pending Publication Date: 2022-01-28
伍政
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem with this method. As the depth of the well increases, the demand for the start-up pressure (pump pressure) of the gas flow increases, and the energy consumption is large, and the gas lift efficiency is not high.

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
  • Graded starting device for gas-lift ball gas-lift producing well
  • Graded starting device for gas-lift ball gas-lift producing well
  • Graded starting device for gas-lift ball gas-lift producing well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Such as Figure 1-2 As shown, this embodiment provides a type I staged start-up device for gas-lift ball gas-lift production wells, including a manifold 1 and several gas-lift valves 2, and several gas-lift valves 2 along the length of the manifold 1 The direction is set, the tri-manifold 1 is Y-shaped, including the delivery tube 11, the lift pipe 12 and the tail pipe 13, and the gas lift valve 2 is H-shaped, including the first channel 21, the second channel 22 and the third channel 23, The first channel 21 communicates with the delivery tube 11, the second channel 22 communicates with the lifting tube 12, and the gas lift valve 2 at the tailpipe 13 of the manifold 1 communicates with the delivery tube 11 at one end of the first channel 21 , the other end is sealed, one end of the second channel 22 communicates with the lift pipe 12, the other end communicates with the tail pipe 13, the third channel 23 communicates the first channel 21 with the second channel 22, and...

Embodiment 2

[0048] Such as image 3 As shown, as an improvement of Embodiment 1, this embodiment provides a type II staged start-up device for gas-lift ball gas-lift production wells, and the rest of the features are the same as in Embodiment 1, the difference is that The spring 44 is replaced by an electric telescopic rod 47, and a first pressure sensor 5 and a first PLC controller 6 are respectively arranged on the inner side wall of the second channel 22, and the signal output end of the first pressure sensor 5 is connected with the first PLC control The signal input end of device 6 is connected, and the signal output end of the first PLC controller 6 is connected with the signal input end of electric telescopic rod 47, and the electric power of electric telescopic rod 47, the first pressure sensor 5 and the first PLC controller 6 are all controlled by Downhole cable provided.

[0049] The type II staged start-up device for gas-lift oil production wells provided by this embodiment ado...

Embodiment 3

[0051] Such as Figure 4 As shown, as an improvement of Embodiment 1, this embodiment provides a type III staged start-up device for gas lift production wells with gas lift balls, and the rest of the features are the same as in Embodiment 1, the difference is that There is no sealed cabin 4, and the plate-shaped gate 3 is replaced by a cylindrical gate 7. The cylindrical gate 7 includes a valve core 71 and a valve housing 72 arranged coaxially. The valve core 71 can rotate around the axis in the valve housing 72. The valve The outer wall of the core 71 fits with the inner wall of the valve housing 72, the valve core 71 is provided with a second through hole 711 in the direction perpendicular to the axis, and the two sides of the valve housing 72 are symmetrically provided with through grooves 721, and the through grooves 721 and the first The two through holes 711 are matched. In addition, a second pressure sensor 8 and a second PLC controller 9 are respectively arranged on t...

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 graded starting device for a gas-lift ball gas-lift producing well. The device comprises a three-manifold and a plurality of gas-lift valves, wherein the plurality of gas-lift valves are arranged along the length direction of the three-manifold, the three-manifold is Y-shaped and comprises a gas supply ball pipe, a lifting pipe and a tail pipe; the gas-lift valve is H-shaped and comprises a first channel, a second channel and a third channel, wherein the first channel is communicated with a gas feeding ball pipe, the second channel is communicated with a lifting pipe, the first channel is communicated with the second channel through the third channel, and a movable gate is arranged in the third channel. According to the graded starting device for the gas-lift ball gas-lift producing well, the multistage gas-lift valves are arranged on the three-manifold, andsegmented liquid drainage is achieved; under the action of the waterwheel principle of the gas-lift balls, liquid drainage is fast, efficiency is high, and liquid drainage is cleaner; the flow pressure of each segment can be remarkably reduced after segmentation, so that the total bottomhole flow pressure drop amplitude is greatly increased, and oil gas at the bottom of the well can be lifted to the ground section by section under the low starting pressure; and the device is suitable for deep well gas-lift oil extraction.

Description

technical field [0001] The invention relates to the technical field of oil production devices, in particular to a staged start-up device for gas lift production wells with gas lift balls. Background technique [0002] In the process of gas-lift oil production with air-lift ball, first use high-pressure gas to press the oil liquid to the required depth through the annular space between the casing and the oil pipe, and then use the air-lift ball gas-lift oil recovery ball control device to continuously send gas to the gas delivery pipe , Sending the ball, when the air lift ball flows to the confluence of the three pipes of the air delivery pipe, the tail pipe and the lift pipe, the air lift ball mixes with the oil and gas from the tail pipe and enters the lift pipe, forming a section in the lift pipe An air lift ball on the air column, a single slug flow structure of an oil column on the air lift ball, thus improving the gas lift efficiency. However, there is a problem with t...

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
Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/12
CPCE21B43/123
Inventor 伍政
Owner 伍政