System for offshore oilfield steam thermal exploitation by utilizing wind power and photovoltaic power

Abstract

The invention provides a system for offshore oilfield steam thermal exploitation by utilizing wind power and photovoltaic power. The system comprises a pure water preparation and storage subsystem, a hydrogen production subsystem, a novel energy storage subsystem, a crude oil collection and conveying subsystem and a wind-solar complementary power generation subsystem. According to the system for offshore oilfield steam thermal exploitation by utilizing wind power and photovoltaic power, the advantage that most of regions where an offshore oilfield is located are regions rich in wind energy and solar energy is utilized, and renewable energy sources (wind energy and solar energy) are introduced into a thickened oil or super-thickened oil exploitation system, so that the renewable energy sources are fully utilized. The solar energy and the wind energy are complementary, so that the timeliness and randomness of the renewable energy sources can be greatly reduced. In order to avoid the problem that the oil extraction effect is influenced due to the fact that the system cannot continuously generate steam due to simultaneous insufficiency of wind and light resources, an energy storage mode of saturated water and hydrogen of the novel energy storage subsystem is adopted, and the system can be kept running under the accidental condition without solar energy or wind energy.

Description

technical field [0001] The invention relates to the technical field of crude oil extraction equipment, in particular to a steam thermal extraction system for offshore oilfields using wind power and photovoltaics. Background technique [0002] At present, the proven reserves of heavy oil and super heavy oil in the world have exceeded 1000×10 8 In my country, such oil reservoirs are widely distributed. Nearly a hundred heavy oil fields have been proven in 12 basins, and heavy oil resources are very rich, accounting for more than 25% to 30% of the total oil resources. my country's CNPC, Sinopec, and CNOOC have proven a large amount of heavy oil, super heavy oil, and super heavy oil on land and in the sea. Various technologies are being used to increase mining efforts. Coupled with the accelerated development of lighter oil fields, the recoverable light oil reserves have been greatly reduced, and it is the only way to increase the development of heavy heavy oil. And the mining...

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Problems solved by technology

[0007] The present invention provides a steam thermal exploitation system for offshore oilfields using wind power and photovoltaics, which is used to solve the problem that the steam used in the development of heavy oil in the sea is mainly obtained by heating boilers with natural gas, coal or other fossil fuels in the prior art, which has high cost and environmental pollution. serious problem

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