High-dryness oil field steam-injection boiler and high-dryness steam production method

Abstract

The invention provides a high dryness oil field steam injection boiler and a high dryness steam production method, belonging to the technical field of the oil field steam injection boiler. The high dryness oil field steam injection boiler comprises a radiation section, a convection section, a transition section, a boiler body, a water supplying pump and a steam-water separator; wherein, a steam superheater is fixedly installed in the boiler body between the convection section and the transition section; the water inlet of an inlet pipe of the convection section is communicated with the water outlet of the water supplying pump; and the water outlet of the inlet pipe of the convection section is communicated with the water inlet at the upper end of the convection section; the steam inlet ofan outlet pipe of the convection section is communicated with the steam outlet at the lower end of the convection section, and the steam outlet of the outlet pipe of the convection section is communicated with a steam inlet of the radiation section. The invention has the advantages that the structure is reasonable and compact, the operation is convenient, the dryness of the steam can be ensured to reach 100 percent, and a certain superheating degree is provided, the invention can meet the requirements of the steam injection technology for developing ultra thick oil, so the working efficiency of the steam injection during the development of ultra thick oil is greatly improved, the thermal efficiency is improved, the energy consumption is reduced, and the manufacture cost is reduced.

Description

1. Technical field [0001] The invention relates to the technical field of oilfield steam injection boilers, and relates to a high-quality oilfield steam-injection boiler and a high-quality steam production method. 2. Background technology [0002] At present, large-scale development of ultra-heavy oil has begun in China. In the super-heavy oil steam injection development process, the outlet steam dryness of steam injection boilers is required to reach 100%. It is about 80%, so it cannot meet the requirements of the steam injection process for the development of super heavy oil. In order to meet the steam injection process requirements for super heavy oil development, it is generally necessary to add at least one additional steam heating device, which not only increases energy consumption but also increases operation and management work, thereby increasing costs. 3. Contents of the invention [0003] The present invention provides a high-dryness oil field steam injection b...

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Problems solved by technology

[0003] The present invention provides a high-dryness oil field steam injection boiler and a high-dryness steam production method, which overcomes the shortcomings of the above-mentioned prior art, and can effectively solve the problem that the steam dryness cannot reach the steam dryness required for steam injection development of super heavy oil Standard problem, its structure is reasonable and compact, improves thermal efficiency, reduces energy consumption, reduces production cost, and can meet the requirements of steam injection process for super heavy oil development

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