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Foam drainage gas production method, device and system

A technology of foam drainage and gas recovery, which is applied in the direction of mining fluid, earthwork drilling, measurement, etc., can solve the problems such as the inability to quantitatively add chemicals, and achieve the effects of reducing production costs and improving drainage efficiency

Inactive Publication Date: 2019-07-16
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a foam drainage gas recovery method, device and system to at least solve the technical problem that the existing foam drainage gas recovery technology cannot automatically perform quantitative dosing according to wellbore fluid accumulation

Method used

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  • Foam drainage gas production method, device and system
  • Foam drainage gas production method, device and system

Examples

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Embodiment 1

[0031] The embodiment of the present invention provides a foam drainage gas recovery system, figure 1 It is a schematic block diagram of a foam drainage gas recovery system according to an embodiment of the present invention, such as figure 1 As shown, the foam drainage gas recovery system includes: a delivery device 10, a detection device 12 and a processor 14, wherein,

[0032] The delivery device 10 is set on the foam drainage and gas recovery system, wherein the delivery device is provided with an accommodation space inside, and the accommodation space is used for accommodating foam row rods; the detection device 12 is arranged inside the downhole space, and is used to detect the above-mentioned downhole space The pressure value; the processor 14 is connected with the above-mentioned detection device 12 and the above-mentioned delivery device 10, and is used to determine the liquid accumulation height of the above-mentioned downhole space according to the pressure value dete...

Embodiment 2

[0063] The embodiment of the present invention provides a method embodiment of a foam drainage gas recovery method. It should be noted that the steps shown in the flow chart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and , although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0064] Figure 4 It is a flow chart of the steps of a foam drainage gas recovery method according to an embodiment of the present invention, such as Figure 4 As shown, the method includes the following steps:

[0065] Step S102, acquiring the pressure value of the downhole space detected by the detection device;

[0066] Step S104, determining the fluid accumulation height of the above-mentioned downhole space according to the pressure value of the above-mentioned downhole space;

[0067] Step S106, generating ...

Embodiment 3

[0078] The embodiment of the present invention also provides another foam drainage and gas collection system, including: a dispensing device, which is arranged on the foam drainage and gas collection system, wherein the interior of the dispensing device is provided with an accommodation space, and the accommodation space is used to accommodate foam discharge rods The detection device is arranged inside the downhole space and is used to detect the liquid accumulation height of the above-mentioned underground space; the processor is connected with the above-mentioned detection device and the above-mentioned dispensing device, and is used to generate the above-mentioned liquid accumulation height according to the above-mentioned liquid accumulation height of the above-mentioned underground space. A control instruction corresponding to the height, wherein the control instruction is used to control the delivery device to inject the foam discharge rod corresponding to the height of th...

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Abstract

The invention discloses a foam drainage gas production method, device and system. The method comprises the steps that the pressure value, detected by a detection device, of an underground space is obtained, the liquid accumulation height of the underground space is determined according to the pressure value of the underground space, and a control instruction corresponding to the accumulated liquidheight is generated, wherein the control instruction is used for controlling a putting device to put a foam discharge rod corresponding to the accumulated liquid height into the underground space. The technical problem that in the existing foam drainage gas production technology, quantitative chemical adding cannot be automatically conducted according to wellbore accumulated liquid is solved.

Description

technical field [0001] The invention relates to the field of energy development, in particular to a foam drainage gas recovery method, device and system. Background technique [0002] In the process of gas field development, due to the influence of formation water and condensed water in natural gas, fluid accumulation in the wellbore of gas wells is often caused, which will adversely affect the normal production of gas wells. The back pressure generated at the bottom of the well can seriously limit the productivity of gas wells. When the fluid effusion is severe, the gas well stops blowing. In order to ensure the stable production of gas wells, it is necessary to adopt a reasonable drainage and gas recovery process. Drainage gas recovery technologies used on site mainly include: foam drainage gas recovery technology, velocity string gas recovery technology, plunger gas lift gas recovery technology, gas lift recovery gas recovery technology, etc. Foam drainage gas recovery...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/16E21B43/12E21B47/06
CPCE21B43/166E21B43/121E21B47/06
Inventor 王丽娜段宝玉叶连池祖世强杨永祥熊巍马纪翔李士东周旭
Owner PETROCHINA CO LTD
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