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Supercritical hydrothermal combustion treatment and steam injection system for oil extraction waste liquid

A technology of supercritical water and supercritical water oxidation, applied in mining wastewater treatment, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc. The effect of little and no smoke loss

Active Publication Date: 2017-05-10
XIAN UNIV OF TECH
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Problems solved by technology

[0005] However, the development of Xiangyi supercritical hydrothermal combustion technology is still in the laboratory stage and has not been applied in actual engineering

Method used

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  • Supercritical hydrothermal combustion treatment and steam injection system for oil extraction waste liquid
  • Supercritical hydrothermal combustion treatment and steam injection system for oil extraction waste liquid
  • Supercritical hydrothermal combustion treatment and steam injection system for oil extraction waste liquid

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] The invention provides a supercritical hydrothermal combustion treatment and steam injection system for oil production waste liquid, the structure of which is as follows figure 1 As shown, it includes a coagulation pretreatment unit, the coagulation pretreatment unit is connected with a material transportation unit, the material transportation unit is connected with a supercritical hydrothermal combustion unit, the supercritical hydrothermal combustion unit is connected with a start-up preheating unit, and the supercritical The hydrothermal combustion unit is connected with a supercritical water oxidation treatment unit, and the supercritical water oxidation treatment unit is connected with a steam aftertreatment unit.

[0035] The coagulation pretreatment unit includes an oil production waste liquid storage tank 1, the outlet of the o...

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Abstract

The invention discloses a supercritical hydrothermal combustion treatment and steam injection system for oil extraction waste liquid. The supercritical hydrothermal combustion treatment and steam injection system for the oil extraction waste liquid comprises a coagulation pretreatment unit; the coagulation pretreatment unit is connected with a material transporting unit; the material transporting unit is connected with a supercritical hydrothermal combustion unit; the supercritical hydrothermal combustion unit is connected with an initiating preheating unit; the supercritical hydrothermal combustion unit is connected with a supercritical water treatment oxidization unit; the supercritical water treatment oxidization unit is connected with a steam post-treatment unit; the oil extraction waste liquid can be treated harmlessly, meanwhile, an effective steam injection medium can be provided, and heavy oil recovery efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of oil field deep layer heavy oil exploitation equipment, and in particular relates to a supercritical hydrothermal combustion treatment and steam injection system for oil production waste liquid. Background technique [0002] The world's proven heavy oil reserves have reached 35.4 billion tons, and my country's proven and controlled heavy oil reserves are 1.6 billion tons. At present, more than 70 heavy oil fields have been discovered in 12 basins, mainly in Tahe, Shengli , Liaohe, Henan, Xinjiang and other oil fields. Among them, in my country's onshore crude oil, heavy oil reserves account for 20%, while the proportion of heavy oil reserves in offshore crude oil is as high as 70%. Due to its high viscosity and poor fluidity, heavy oil greatly increases the difficulty of its extraction. Thermal recovery technology is one of the most commonly used heavy oil recovery technologies at present. The fluidity of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04E21B43/24F23G7/04C02F103/10
CPCE21B43/24F23G7/04C02F9/00F23G2209/101C02F1/72C02F1/52C02F2103/10C02F1/001
Inventor 张洁王树众卢金玲陈森林贺登辉罗兴锜
Owner XIAN UNIV OF TECH
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