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Green low-carbon development system and method for thickened oil

A development system and green technology, applied in chemical instruments and methods, separation methods, and production fluids, etc., can solve problems such as inability to produce superheated steam, poor water quality, and non-compliance with oilfield carbon emission reduction requirements, and achieve resource utilization, The effect of reducing consumption and solving boiler carbon emissions

Pending Publication Date: 2022-05-13
西安本清化学技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, a large amount of steam needs to be injected into the heavy oil production process, and the boiler water required by the steam injection boiler comes from the oil field sewage, the water quality is poor, and it is impossible to produce high-quality superheated steam, which cannot meet the steam quality requirements of the current heavy oil production.
At the same time, the steam injection boiler will produce carbon dioxide to form carbon emissions during the production process, which does not meet the carbon emission reduction requirements of oil field exploitation.

Method used

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  • Green low-carbon development system and method for thickened oil

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Embodiment Construction

[0030] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

[0031] In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions are denoted by similar numerals. The size and thickness of each component shown in the drawings are shown arbitrarily, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of parts is appropriately exaggerated in some places in the drawings.

[0032] like figure 1 As shown, in a preferred embodiment of the present invention, a green and low-carbon development system for h...

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Abstract

The invention discloses a green low-carbon development system and method for thickened oil, and relates to the technical field of thickened oil development, and the system comprises a waste steam treatment module, a non-condensable gas treatment module, a water treatment module, a CO2 capture module, a boiler and a steam treatment module. Middle-grade waste heat obtained in the oil field high-temperature waste steam treatment process is used as a heat source needed for CO2 capture, flammable non-condensable gas obtained in the high-temperature waste steam treatment process is used for partially replacing boiler fuel, condensate water obtained in the high-temperature waste steam treatment process is used as boiler feed water, waste heat resources are reasonably utilized, and the CO2 capture effect is improved. According to the invention, waste of heat energy is reduced, the heat balance problem that a large amount of waste heat cannot be utilized in the oil extraction process is partially solved, resource utilization of medium-grade waste heat, non-condensable gas and condensed water in high-temperature produced liquid of an oil field can be realized, high-quality superheated steam and liquid CO2 can be provided for production of the oil field, and near-zero emission of CO2 of the whole system is realized at the same time; therefore, green and low-carbon development of the thickened oil is realized.

Description

technical field [0001] The invention relates to the technical field of heavy oil development, in particular to a green and low-carbon heavy oil development system and method. Background technique [0002] In the process of thermal recovery of heavy oil in the oil field, steam needs to be injected into the steam injection well. The steam forms a steam cavity in the formation, and the steam cavity expands upwards and sideways, and exchanges heat with the crude oil in the oil layer. The heated crude oil and steam condensed water rely on Gravity drains to the horizontal production wells below. Heavy oil production fluid has high pressure and high temperature (about 200°C), and it needs to be depressurized and cooled after being transported from the well site to the oil transfer station. Gas and a small amount of light oil. [0003] At present, the oilfield production fluid treatment method is mainly to use ethylene glycol to circulate and cool the waste steam from the flash ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B41/00E21B43/16F22B33/18B01D53/18B01D53/14B01D53/00
CPCE21B41/005E21B43/164F22B33/18B01D53/1475B01D53/18B01D53/1418B01D53/002
Inventor 甘典凤陈柏全任正荣
Owner 西安本清化学技术有限公司
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