Oil field steam injection boiler system coupled with electric boiler to generate steam and hot water

Abstract

The invention discloses an oil field steam injection boiler system coupled with an electric boiler to generate steam and hot water. The oil field steam injection boiler system comprises a first water pump device, a second water pump device, the electric boiler, a liquid mixer, a steam injection boiler, a steam mixer, a superheater and a first steam pipeline. The electric boiler is used for receiving and heating water output by the first water pump device and outputting hot water and steam; water output by the second water pump device and hot water output by the electric boiler enter the liquid mixer; the steam injection boiler is used for receiving water output by the liquid mixer and generating and outputting steam; steam output by the electric boiler and steam output by the steam injection boiler enter the steam mixer and are output by the steam mixer; the superheater is used for receiving the steam output by the steam mixer, heating the steam output by the steam mixer into required high-temperature and high-pressure steam and conveying the high-temperature and high-pressure steam to an oil well; and the first steam pipeline is used for directly conveying steam generated by the electric boiler to the oil well. On the premise of meeting the steam injection requirement of an oil field, energy conservation, consumption reduction and emission reduction can be achieved to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of oil field mining surface engineering and energy comprehensive utilization, in particular to an oil field steam injection boiler system coupled with an electric boiler to generate steam and hot water. Background technique [0002] As the world pays increasing attention to climate change, carbon emission reduction has been put on the agenda. The "3060" goal has been clearly proposed at the Central Economic Work Conference, which also puts forward new goals for the heavy oil mining industry, that is, how to achieve On the premise of oil and gas exploitation, further reduce carbon and improve efficiency. [0003] In the world's mainstream heavy oil thermal recovery process, a large amount of high-temperature and high-pressure steam needs to be injected into the oil layer for heating to reduce the viscosity of the heavy oil, form an oil-water mixture for recovery, and then separate the oil and water to obtain ...

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Problems solved by technology

[0010] The disadvantage of solar photothermal conversion steam huff and puff is that usually only the heavy oil near the well can be produced and exploited, and there are a large number of dead oil areas in each well interval. With the reduction of oil storage and formation energy, the oil recovery effect and economic efficiency of this technology The benefits will gradually decrease, so when this technology is exploited to a certain extent, other mining methods should be switched to achieve higher economic efficiency

In addition, solar photothermal conversion has the natural characteristics of periodicity and large fluctuations, and the solar irradiance is intermittent and extremely unstable, which adds difficulty to the large-scale application of solar heat collection to directly produce steam in oilfield areas

[0011] The disadvantage of solar photothermal conversion steam flooding is that the oil displacement effect in the initial stage of production will be limited by the formation and temperature field, and it often takes a relatively long time to inject steam before the oil well can increase production

High investment and maintenance costs require a large amount of land and complex pipeline laying

At the same time, the problem of energy storage for solar thermal conversion must be well solved. Adding energy storage devices to the heavy oil thermal recovery and steam injection system will greatly increase investment and maintenance costs

At the same time, the solar heliostat system is expensive and occupies a large proportion of an investment

[0012] The disadvantage of solar photothermal conversion hot water flooding is that the hot water content is small and cannot be used as an effective heat carrier to bring heat into the reservoir

There is a lack of actual operation of solar thermal conversion heavy oil thermal recovery projects, and the solar thermal conversion technology is still in the research and design stage

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