Intelligent gas injection method and system for inter-well gas lift

A gas lift and intelligent technology, applied in the field of intelligent gas injection methods and systems for interwell gas lift, can solve the problems of affecting the drainage effect, inaccurate timing of the gas lift, time-consuming and laborious, etc., so as to improve the drainage effect and improve the Liquid efficiency, energy saving effect

Inactive Publication Date: 2020-04-28
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, for these existing methods, interwell gas lift is still manually operated, which is time-consuming and laborious, and the timing of gas lift is not accurate, which affects the drainage effect

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  • Intelligent gas injection method and system for inter-well gas lift
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  • Intelligent gas injection method and system for inter-well gas lift

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Embodiment Construction

[0041] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0042] Also, in the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without the specific details or in the particular manner described.

[0043] In addition, the steps shown in the flow...

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Abstract

The invention provides an intelligent gas injection method for inter-well gas lift. The method comprises the steps that 1, the annulus liquid level of an oil-gas well is obtained; 2, the wellbore liquid accumulation amount of the oil-gas well is calculated according to the annulus liquid level and the casing pressure and oil pressure of the oil-gas well; and 3, the wellbore liquid accumulation amount is compared with a preset liquid accumulation amount threshold interval, and inter-well gas lift is started or ended according to a comparison result. According to the method, whether gas injection is needed for the oil-gas well or not and the gas lift opportunity can be automatically determined according to the wellbore liquid accumulation condition of the oil-gas well, thus, intelligence ofinter-well gas lift can be achieved, the liquid drainage effect and the liquid drainage efficiency are improved, and energy saving is facilitated.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration and development, in particular to an interwell gas lift intelligent gas injection method and system. Background technique [0002] After the production of water-producing gas wells enters the middle and late stages, the bottom of the well will accumulate fluid due to insufficient formation energy, which will cause water flooding and stop production. At this time, drainage and gas recovery technology must be implemented to maintain stable production. Interwell gas lift technology is a kind of drainage gas recovery technology that uses nearby high-pressure gas wells to inject gas into the casing annulus of low-pressure gas wells, and continuously brings out bottomhole fluid through high-pressure gas flow to restore normal production of low-pressure gas wells. Compared with tanker gas lift, vehicle-mounted gas lift, membrane-made nitrogen gas lift, and plunger gas lift, this process i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B43/16E21B47/047
CPCE21B43/122E21B43/162
Inventor 顾战宇刘通林永茂邹东来杜洋倪杰
Owner CHINA PETROLEUM & CHEM CORP
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