Method for generating combustion resonance steam from emulsified crude oil for heating oil wells

Abstract

The invention provides a method for generating combustion resonance steam from emulsified crude oil for heating oil wells. The method includes emulsifying crude oil; generating the resonance steam; heating a crude oil emulsifying tank; and sealing the oil wells. By the method, the crude oil and water are emulsified at first, are mixed by an oil-air mixer to obtain mixtures, and the mixtures are ignited and are sprayed out of a steam jet provided with a resonator, so that a resonance steam flow is formed, and the oil wells can be heated. The method has the advantages of convenience in implementation, easiness in equipment manufacture, portability, flexibility in control, high heat conversion efficiency, good oil layer heating effect and capability of stopping pollution. The method is suitable for implementing steam heating for the oil wells.

Description

technical field [0001] The invention proposes a method for heating oil wells in oil exploitation, specifically a method for generating emulsified crude oil combustion resonance steam for oil well heating. Background technique [0002] At present, the exploitation of heavy oil reservoirs needs to heat the reservoirs, and the heat source for heating is usually steam. Oilfield exploitation mainly adopts steam huff and puff, steam flooding and oil layer fire to heat the oil layer. Among them, the steam huff and puff is to inject a certain amount of steam into the oil well first, keep the well for a period of time, and then open the well to exploit oil after the heat energy of the steam diffuses to the oil layer. The disadvantages are: long oil production cycle, slow heating temperature of the oil layer, and only The oil layer near the oil well is exploited; steam flooding is to continuously inject high-dryness steam into the oil layer into the well, and the steam continuously h...

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Problems solved by technology

Among them, the steam huff and puff is to inject a certain amount of steam into the oil well first, keep the well for a period of time, and then open the well to exploit oil after the heat energy of the steam diffuses to the oil layer. The disadvantages are: long oil production cycle, slow heating temperature of the oil layer, and only The oil layer near the oil well is exploited; steam flooding is to continuously inject high-dryness steam into the oil layer into the well, and the steam continuously heats the oil layer, thereby reducing the viscosity of the crude oil in the oil layer, and the injected steam becomes a hot fluid in the formation, The crude oil is driven to the surroundings of the production well and brought to the ground. The disadvantage is that: steam flooding can only rely on the second heating of the oil layer after the steam huff and puff extraction, and then the method of extraction; the oil layer is burned by electricity and The chemical method makes the temperature of the oil layer reach the ignition point of the crude oil, and injects air or oxygen into the oil layer to make the crude oil in the oil layer burn continuously.

Since crude oil is directly burned and steam is generated through boiler heat exchange, crude oil is not easy to fully burn, and when heat energy is exchanged with the boiler, part of the heat energy is released into the atmosphere along with the flue gas, resulting in a waste of energy

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