Gas production control method for natural gas well and intelligent controller

A technology of intelligent controller and control method, which is applied in the fields of fluid production, earth-moving drilling, wellbore/well components, etc. The method is simple and other problems, to achieve the effect of easy analysis and research

Active Publication Date: 2016-05-04
CHENGDU KESI SAIDE TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first is manual control, that is, the control valve is manually adjusted to achieve the maximum gas production under the premise that the monitoring parameters meet the production process requirements. The main defects of this method are that it consumes manpower, high cost, and cannot record the gas production process in real time. The casing pressure, oil pressure, and flow parameters collected in the system cannot provide sufficient data records for the improvement of the gas production process, and secondly, errors may be caused by human factors.
The second is the time control method, that is, the timing control of the valve is realized through the controller, thereby realizing the opening and closing of the well. The main defect of this method is that the control method is simple and rough, and does not take into account the actual working conditions , not reaching the optimum process requirements for natural gas production

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  • Gas production control method for natural gas well and intelligent controller

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Embodiment 1

[0031] The present embodiment provides a gas production control method for a natural gas well, and the control method mainly includes the following steps:

[0032] (1) The steps of presetting control valve opening data corresponding to different casing pressures, oil pressures and flow rates of gas wells;

[0033] (2) The steps of collecting gas well casing pressure, oil pressure and flow data;

[0034] (3) According to the collected casing pressure, oil pressure and flow data, control the corresponding opening of the control valve.

[0035] Wherein, in step (1), the opening degree of the control valve corresponding to the corresponding casing pressure, oil pressure and flow data is not uniquely determined, and the opening degree of the control valve corresponding to different casing pressure, oil pressure and flow rate of the gas well is preset. The data can be set according to the actual working conditions. The collection of gas well casing pressure, oil pressure, and flow...

Embodiment 2

[0040] like figure 1 As shown, this embodiment provides an intelligent controller, and the controller is used to implement the gas production control method for a natural gas well disclosed in Embodiment 1. The intelligent controller mainly includes six units, which are as follows: signal acquisition unit, processing unit, control unit, communication unit, human-computer interaction unit and power supply unit. Among them, the signal acquisition unit, the control unit, the communication unit, and the human-computer interaction unit are all connected with the processing unit to realize communication, and the power supply unit provides power for the work of each unit.

[0041] In order to make those skilled in the art have a clearer understanding and understanding of the intelligent controller, each unit is described in detail below:

[0042] The signal acquisition unit is mainly used to collect gas well casing pressure, oil pressure, flow data, and control valve status data; sp...

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Abstract

The invention discloses a gas production control method for a natural gas well and an intelligent controller and mainly solves the problems of low measurement precision, high labor cost and the like with the conventional gas production control method for the natural gas well. The gas production control method for the natural gas well comprises the following steps: (1) presetting control valve opening data corresponding to different gas well casing pressure, oil pressure and flow; (2) acquiring gas well casing pressure, oil pressure and flow data; (3) controlling the control valve to be opened to the corresponding opening according to the acquired casing pressure, oil pressure and flow data. The gas production control method can realize intelligent control and is convenient to implement and high in control precision.

Description

technical field [0001] The invention relates to the technical field of natural gas well gas production, in particular to a natural gas well gas production control method and an intelligent controller. Background technique [0002] In the gas production of natural gas wells, in the prior art, two methods are mainly used for control. The first is manual control, that is, the control valve is manually adjusted to achieve the maximum gas production under the premise that the monitoring parameters meet the requirements of the production process. The main drawbacks of this method are that it is labor-intensive, costly, and cannot record the gas production process in real time. The parameters of casing pressure, oil pressure and flow rate collected in the process cannot provide sufficient data records for the improvement of the gas production process, and secondly, errors may be caused by human factors. The second is the time control method, that is, the timing control of the valv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/12
CPCE21B43/12
Inventor 肖华
Owner CHENGDU KESI SAIDE TECH CO LTD
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