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Intelligent production adjusting method and device for gas wells

A technology of intelligent adjustment and production method, which is applied in the direction of earthwork drilling, wellbore/well components, production fluid, etc.

Active Publication Date: 2015-11-25
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are certain limitations and shortcomings in the above two methods of water drainage and gas recovery.

Method used

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  • Intelligent production adjusting method and device for gas wells
  • Intelligent production adjusting method and device for gas wells
  • Intelligent production adjusting method and device for gas wells

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Example 1: Such as Figure 1 to 5 As shown,

[0027] An intelligent production method for gas wells can solve the problem of excessive fluid accumulation or water production in the gas well bore and the formation near the bottom of the well, and can better eliminate bottom fluid accumulation, reduce drainage gas production costs, and prolong gas well production time.

[0028] An intelligent regulation production system for gas wells should include a surface control system and a downhole execution system. Among them, the surface control system includes pressure sensors, control valves, control boxes, electronically controlled needle valves, flow meters, etc.; downhole execution systems are mainly downhole controllers.

[0029] The control box 3 is connected to the pressure sensor 1, the control valve 2, the electronically controlled needle valve 4 and the flow meter 5. The downhole controller 6 is installed in the downhole channel of the wellhead;

[0030] One side of the flow ...

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Abstract

The invention provides an intelligent production adjusting method and device for gas wells and belongs to the technical field of oil field digitization. When oil pressure is higher than a certain pressure value P1, the liquid carrying capability of gas is in a strong state, a control valve is in a circulation-closed state, and at the moment, an underground controller has the maximal opening degree; when the oil pressure is lower than a certain pressure value P2, the liquid carrying capability of gas is poor, or gas cannot carry liquid, and at the moment, the opening degree of the throttling hole of the underground controller is controlled to increase the gas flow rate so as to enhance the liquid carrying capability; and. therefore, the oil pressure value and the casing pressure value of a pressure gauge are read, a reasonable valve opening degree is calculated in combination with the gas production rate, a control box sends a command to the control valve to enable the control valve to reach an appropriate opening degree, a control rod of the underground controller, of which the left face receives a smaller stress than the right face, moves leftwards till a balance is achieved, and the opening degree of the throttling hole is between the maximal opening degree and the minimal opening degree, so that the gas flow rate is the maximal, and the goal of carrying the largest volume of liquid is achieved.

Description

Technical field [0001] The invention relates to the technical field of oilfield digitalization, and in particular to a method and device for intelligently regulating production of gas wells. Background technique [0002] At present, the number of liquid-accumulating gas wells in the oilfield area accounts for about 50% of the total number of gas wells. From the perspective of the proportion of gas wells, liquid-accumulating wells have been distributed in a large area, and gas wells have become an important factor affecting productivity. [0003] For fluid wells, mechanical and physical and chemical methods are mainly used to achieve drainage and gas recovery. Both of these two process technologies are relatively mature, and are also more process methods used on site. However, any method has certain requirements on the production conditions of the gas well. It must be selected reasonably according to the geological characteristics of the gas reservoir, the production dynamic charac...

Claims

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Application Information

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IPC IPC(8): E21B43/00E21B43/12
Inventor 程世东于志刚杨仓海李永长赵晓龙操红梅徐梅赞张春涛黄天虎邱亮邱奇李珍刘峰
Owner PETROCHINA CO LTD
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