Steam-flue gas mixing fluid generation method for thickened oil thermal recovery

A technology for flue gas mixing and heavy oil thermal recovery, which is applied in the direction of steam generation, steam generation, mining fluid, etc., can solve the problems of large investment, complex process equipment, and difficulty in large-scale application, so as to save water resources and reduce smoke Gas purification and compression link, the effect of reducing water treatment costs

Inactive Publication Date: 2013-01-30
TSINGHUA UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of complex flue gas dehydration, purification, pressurization and other process equipment, huge investment, and difficulty in large-scale application in

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  • Steam-flue gas mixing fluid generation method for thickened oil thermal recovery
  • Steam-flue gas mixing fluid generation method for thickened oil thermal recovery

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Embodiment Construction

[0014] The principle, specific structure and best implementation mode of the present invention will be further described below in conjunction with the accompanying drawings.

[0015] figure 1 In order to realize a schematic structural diagram of a high-temperature and high-pressure steam-flue gas generation system of the present invention, the system includes a boiler 2 , a transition flue 3 and a mixing chamber 5 . In this system, the walls of the boiler, transitional flue and mixing chamber are all arranged with heat-insulating and temperature-resistant materials. In this method, gas or liquid fuel and air 1 are pressurized and sent into the furnace of the boiler, mixed and burned in the furnace to generate high-temperature and high-pressure flue gas, and then sent into the mixing chamber 5 through the transition flue 3; the purified water 4 is passed through The atomization equipment is sprayed into the mixing chamber 5 to make the purified water form fine droplets. The fi...

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Abstract

A steam-flue gas mixing fluid generation method for thickened oil thermal recovery belongs to the technical field of thickened oil thermal recovery and boiler equipment. A generation system comprises a boiler, a transition gas flue and a mixing chamber. The steam-flue gas mixing fluid generation method comprises the following steps of: feeding pressurized gas or liquid fuel and air into the hearth of the boiler, mixing and burning in the hearth to generate high-temperature and high-pressure flue gas, and feeding the flue gas into the mixing chamber through the transition gas flue; spraying purified water into the mixing chamber through an atomization plant to form tiny liquid drops, mixing the tiny liquid drops with the high-temperature and high-pressure flue gas in the mixing chamber, heating the mixture by the flue gas to turn into water vapor after being vaporized, and further generating the high-temperature and high-pressure steam-flue gas mixing fluid; and finally, leading the high-temperature and high-pressure steam-flue gas mixing fluid out to a steam injection pipeline. The steam-flue gas mixing fluid generation method has the advantages of reducing flue gas purification and compression links, effectively saving investment and running costs and water resources and obviously reducing the cost of water treatment.

Description

technical field [0001] The invention relates to a method for producing high-temperature and high-pressure steam-flue gas mixed fluid, and belongs to the technical field of heavy oil thermal recovery and boiler equipment. Background technique [0002] In recent years, as the effect of steam huff and puff in thermal recovery of heavy oil has deteriorated year by year, heavy oil fields have been in the transition period from steam huff and puff to other production methods. Among various replacement technologies, flue gas and steam mixed injection huff and puff is the most promising method. Existing flue gas injection test results show that the use of the overlay effect of flue gas can improve the production degree of the upper oil layer; use of the compressibility of flue gas can provide oil displacement power for oil well production; use of CO 2 The carboxylation of the oil can reduce the viscosity of crude oil; use the low-temperature oxidation and coking of oxygen in the fl...

Claims

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Application Information

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IPC IPC(8): E21B43/24F22B1/00
Inventor 刘雪敏吴玉新吕俊复蔡春荣张海刘青
Owner TSINGHUA UNIV
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