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Method and device for intelligently opening and closing well

A technology of intelligent switch and well switch, which is applied in the direction of wellbore/well valve device, earthwork drilling and production, wellbore/well parts, etc., which can solve the problems of increased labor intensity, reduced production efficiency, and increased workload of well opening operations, etc. problems, to achieve the effect of reducing workload and labor intensity, improving production efficiency, and meeting the needs of switching wells

Active Publication Date: 2018-03-09
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the Sugeli gas field is located in the Mu Us sandy land, the gas wells are dispersed, so the increase in the number of well openings has resulted in a sharp increase in the workload of well opening operations, increased labor intensity, and reduced production efficiency, which cannot meet the requirements for opening and closing wells

Method used

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  • Method and device for intelligently opening and closing well
  • Method and device for intelligently opening and closing well
  • Method and device for intelligently opening and closing well

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The embodiment of the present invention provides a method for intelligent switch well, see figure 2 , the method includes:

[0073] Step 101: Collect environmental parameters of the gas well.

[0074] In this embodiment, the environmental parameters include the pressure in the oil pipe for gas production, the pressure between the casing outside the oil pipe and the oil pipe, the pressure in the gas pipeline, the flow rate of the fluid in the gas pipeline, and the gas well switch. One or more of the valve opening degree of the throttle valve, the interval time between the current time and the well opening time or the well closing time.

[0075] In this embodiment, the well opening time is the time when the well opening is started, and the well shut-in time is the time when the well shut-in is started.

[0076] In actual gas well production, after the drilling of the gas well is completed, the well wall will be fixed with casing first, and then the tubing for gas produ...

Embodiment 2

[0082] The embodiment of the present invention provides a method for intelligent switch well, see image 3 , the method includes:

[0083] Step 201: Collect environmental parameters of the gas well.

[0084] In this embodiment, the environmental parameters include the pressure in the oil pipe for gas production, the pressure between the casing outside the oil pipe and the oil pipe, the pressure in the gas pipeline, the flow rate of the fluid in the gas pipeline, and the gas well switch. One or more of the valve opening degree of the throttle valve, the interval time between the current time and the well opening time or the well closing time.

[0085] In this embodiment, the well opening time is the time when the well opening is started, and the well shut-in time is the time when the well shut-in is started.

[0086] In actual gas well production, after the drilling of the gas well is completed, the well wall will be fixed with casing first, and then the tubing for gas produc...

Embodiment 3

[0147] see Figure 4 , the embodiment of the present invention provides an intelligent switch well device, which is suitable for the intelligent switch well method provided in Embodiment 1 or Embodiment 2. The device includes a throttle valve 301, a motor 302, a transmission mechanism 303, and a controller 304 , an absolute encoder 305, a flow meter 306, and three pressure transmitters 307. The three pressure transmitters 307 are set respectively in the oil pipe for gas production, between the casing and the oil pipe for fixing the well wall outside the oil pipe, and in the gas pipeline. The flow meter 306 is set in the gas pipeline with absolute coding The device 305 is arranged on the transmission mechanism. The controller 304 is electrically connected to three pressure transmitters 307 , a flow meter 306 , an absolute encoder 305 and a motor 302 . The output shaft of the motor 302 is coaxially connected with the input end of the transmission mechanism 303 , and the output...

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Abstract

The invention discloses a method and device for intelligently opening and closing a well, and belongs to the technical field of natural gas exploitation. The method includes the steps of collecting environmental parameters of a gas collecting well, wherein the environmental parameters include one or more of pressure in an oil tube for collecting the gas, pressure between a casing pipe sleeving theoil tube and the oil tube, pressure in a gas conveying pipeline, flow of fluid in the gas conveying pipeline, the valve opening degree of a throttle valve for achieving opening and closure of the gaswell, and the interval time between the current moment and the moment for opening the well or the interval time between the current moment and the moment for closing the well; determining whether ornot the environmental parameters meet the conditions for opening and closing the well under a preset pattern; if the environmental parameters are in accord with the conditions for opening the well under the preset pattern, according to the environmental parameters, controlling the adjustment process of the valve opening degree of the throttle valve, and completing well opening under the preset pattern. The processes of opening and closing the well are automatically completed by equipment, people have no need to come to a gas well site to manually operate the throttle valve, the workload and labor intensity of well opening operation are greatly reduced, the production efficiency is improved, and the requirements for opening and closing the well are met.

Description

technical field [0001] The invention relates to the technical field of natural gas exploitation, in particular to an intelligent method and device for opening and closing wells. Background technique [0002] The Sugeli gas field adopts the downhole throttling process to realize natural gas production. The natural gas produced from the wellhead is transported to the gas gathering station through the throttling valve, emergency shut-off valve, and gate valve in sequence. The gas well can be switched on and off by controlling the throttling valve. [0003] At present, the switch of the gas well is completed by manually operating the throttle valve at the gas well site. Because there is a large pressure difference before and after the choke valve before the well is opened, the choke valve needs to be opened slowly to release the pressure difference before and after the choke valve. The whole process of opening the well will take about half an hour. [0004] In the process of re...

Claims

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Application Information

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IPC IPC(8): E21B34/16
CPCE21B34/16
Inventor 秦善洋王京朝王猛曾康张跃辉叶连池徐晓峰李坡荆志强
Owner PETROCHINA CO LTD