Method of exploiting deep layer oil shale to manufacture shale oil and oil shale gas

Abstract

The invention relates to a method of exploiting deep layer oil shale to manufacture shale oil and oil shale gas. Firstly, three horizontal wells are drilled on oil shale layer away from water layers and broken layers and at the depth of 100 to 3000 meters, two gas production horizontal wells are respectively arranged at the bottom of the oil shale layer, one high pressure gas injection well is arranged at the upper portion with the inclined angle of 40 degrees, the well distance is 30 meters, and the two gas production wells adopt advanced well completion technique. Secondly, the horizontal wells are used to perform large scale crushing, and a storage layer of the oil shale layer is characterized by being low in holes and permeability. According to the method, oil shale underground is heated and crushed to generate gas motion channels in the oil shale and underground, oil shale is burned by injecting gas and oxygen, electrically heating and controllably burning to enable catalysis splitting and combustion splitting to happen in the oil shale, hydrocarbon can be exploited with gas, and shale oil and oil shale gas can be obtained.

Description

technical field [0001] The invention relates to a technology for producing shale oil and oil shale gas by exploiting deep oil shale, in particular to an underground thermal energy exploitation technology for oil shale and shale gas exploitation, which is to carry out vertical well water at a depth of 100-3000 meters The combined technology of high-pressure oxygen-enriched injection in flat wells and high-temperature electric thermocouples enables the underground exploitation of oil shale and shale gas. Background technique [0002] At present, there are two main aspects of mining: ① dry distillation to obtain shale oil, which is further processed into light oil products and various chemical products; ② directly used as boiler fuel to generate steam, and further used for power generation. Shale ash from oil shale dry distillation and combustion can be used to produce construction materials such as cement. The technology is relatively backward, and there are two methods of un...

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Problems solved by technology

[0004] Second, the ash pollution is serious

The oil shale obtained through direct mining is used to refine shale oil or burn directly, producing a large amount of ash. If it is not recycled, it will not only cause air pollution, but also the waste ash occupies a large area, and metal elements and trace elements infiltrate into it. Underground water, endangering people's production and life

[0005] Third, direct mining takes up a lot of land, and once it is reclaimed, it cannot be completely repaired

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