Electromagnetic type medium-low pressure gas collection well remote control well opening and closing device, system and method

A technology for opening and closing wells and gas wells, which is applied in wellbore/well valve devices, wellbore/well components, earthwork drilling and production, etc., and can solve the problems of wellhead remote control valves not having decompression function, valve core hydrate blockage, flow rate, etc. Problems such as the failure of metering wells to achieve fine management, enhanced safety, and reduced maintenance difficulty

Active Publication Date: 2021-06-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides an electromagnetic type medium and low pressure gas-gathering well remote control well switching device, system and method, one of the purposes is to solve the problem that the current wellhead remote control valve does not have the decompression function; the second purpose is to solve the problem of various regulating valves During the well opening process, the downstream of the valve core may cause the problem of hydrate clogging the flowmeter and causing the well opening failure; the third purpose is to solve the energy consumption problem caused by the long-term operation of the ordinary control valve motor

Method used

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  • Electromagnetic type medium-low pressure gas collection well remote control well opening and closing device, system and method
  • Electromagnetic type medium-low pressure gas collection well remote control well opening and closing device, system and method
  • Electromagnetic type medium-low pressure gas collection well remote control well opening and closing device, system and method

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Experimental program
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Effect test

Embodiment 1

[0046] refer to Figure 1 to Figure 9 , Figure 11 An electromagnetic type medium and low pressure gas-gathering well remote control switch well device is shown, including valve body 1, downstream flange 2, decompression mechanism 3, high pressure sleeve 4, valve cover 5, full opening mechanism 6, high pressure sleeve pressure charging Solenoid head group 7, fully open pressure solenoid head group 8, upstream flange 13, decompression mechanism compression spring 14, high pressure sleeve compression spring 18, cylinder piston 26, cylinder 27, high pressure sleeve pressure relief solenoid head group 29 and fully open The pressure relief electromagnetic head group 30; the valve body 1 is a hollow cylindrical body, and the left and right ends of the valve body 1 are respectively connected with a downstream flange 2 for connecting with the downstream pipeline of the gas well wellhead and an upstream pipeline for connecting with the gas well wellhead gas tree. connected upstream fl...

Embodiment 2

[0059] refer to Figure 10 The shown electromagnetic type medium and low pressure gas gathering well remote control switch well system includes at least an electromagnetic type medium and low pressure gas gathering well remote control switch well device 12, and also includes a remote terminal unit RTU9, an electric bypass valve 10 and a flow meter 11 ; The remote terminal unit RTU9 is connected with the remote control switch well device 12 of the electromagnetic type medium and low pressure gas gathering well; the remote control switch well device 12 of the electromagnetic type medium and low pressure gas gathering well is connected with a flowmeter 11; The two ends of the electric bypass valve 10 mentioned above are respectively connected with the two ends of the flow meter 11 .

[0060] In the specific application process, when it is necessary to depressurize and open the well, the remote terminal unit RTU9 sequentially sends instructions to the high-voltage sleeve pressure ...

Embodiment 3

[0068] A method for controlling the remote control switch well system of an electromagnetic medium-low pressure gas-gathering well, comprising the following steps,

[0069] Step 1: Go to step 2 if you want to open the well for decompression; go to step 3 if you want to shut down the well or shut it off urgently; go to step 4 if you want to open the well by bypass to prevent freezing and blocking;

[0070] Step 2: The remote terminal unit RTU9 sequentially sends instructions to the high-voltage sleeve pressure solenoid head group 7 for instantaneous energization of the vertical direction solenoid heads for 1 to 2 seconds, and for the high-voltage sleeve depressurization solenoid head group 29 to instantaneously energize the horizontal direction solenoid heads for 1 to 2 seconds, The high pressure sleeve pressure relief solenoid head group 29 is energized for 1 to 2 seconds in the vertical direction; when the remote terminal unit RTU9 monitors that the upstream pressure of the de...

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Abstract

The invention belongs to the technical field of natural gas extraction, and particularly relates to an electromagnetic type medium-low pressure gas collection well remote control well opening and closing device, system and method. The device comprises a valve body, a downstream flange, a pressure reduction mechanism, a high-pressure sleeve, a valve cover, a full-opening mechanism, a high-pressure sleeve pressurizing electromagnetic head group, a full-opening pressurizing electromagnetic head group, an upstream flange, a pressure reduction mechanism compression spring, a high-pressure sleeve compression spring, an air cylinder piston, an air cylinder, a high-pressure sleeve pressure relief electromagnetic head group and a full-opening pressure relief electromagnetic head group. In addition, a remote terminal unit RTU, an electric bypass valve and a flow meter form a remote control well opening and closing system, the problems that an existing well mouth remote control valve does not have the pressure reduction function and the flow meter is blocked to cause well opening failure are solved, the safety of the gas well is enhanced, and fine management of the gas well is achieved.

Description

technical field [0001] The invention belongs to the technical field of natural gas exploitation, and in particular relates to an electromagnetic-type medium-low pressure gas-gathering well remote control well opening and closing device, system and method. Background technique [0002] Many wells in tight gas fields are low-yield, and the medium-low pressure gas gathering mode is often adopted. Chokes are installed in the wellbore of the gas wells, and downhole throttles are used to throttle and reduce the pressure of natural gas, and low-temperature heating is used to increase production. This mode can reduce the pressure of the ground system, reduce the investment in ground construction, and prevent the formation of hydrate in the ground pipeline. For medium and low pressure gas-gathering wells, the opening of the well needs to operate the regulating valve at the wellhead to reduce the pressure of the natural gas in the pipeline. After a certain period of time, that is, aft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/02
CPCE21B34/02
Inventor 陈勇田伟汪雄雄肖述琴赵峥延杨旭东卫亚明白晓弘贾友亮李旭日
Owner PETROCHINA CO LTD
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