Method of circular mining geothermal resources

一种循环开采地热资源的方法

Abstract

本发明涉及一种循环开采地热资源的方法,包括以下步骤:1)确定一个地温梯度相对高的地区;2)在所述地温梯度相对高的地区确定储集层;3)在所述储集层的主要延伸方向确定两口井的井位并进行钻井,一口井在储集层相对低的部位,为进水井;另一口井在储集层相对高的部位,为出水井;4)将所述进水井及出水井均钻到储集层处,然后再在同一储集层段进行射孔,得到储集层通道,使得所述进水井通过储集层通道与所述出水井相通;5)在地面,从所述进水井注入地表淡水,地表淡水经过储集层通道,得到加热后的热水,所述加热后的热水流入出水井,然后再送到出水井口即可。
The invention relates to a method of circular mining geothermal resources. The method comprises following steps: (1) an area with a relatively-high geothermal gradient is confirmed; (2) a reservoir stratum in the area with the relatively-high geothermal gradient is confirmed; (3) well positions of two wells are confirmed along a main extending direction of the reservoir stratum, well drilling is conducted, one well is arranged on a relatively-low position of the reservoir stratum and is a water inlet well, and the other well is arranged on a relatively-high position of the reservoir stratum and is a water outlet well; (4) the water inlet well and the water outlet well are all drilled on the reservoir stratum, then perforation is conducted on the same reservoir stratum segment, a reservoir stratum channel is obtained, and the water inlet well is communicated with the water outlet well through the reservoir stratum; (5) on the ground, ground surface fresh water is injected from the water inlet well, the ground surface fresh water passes through the reservoir stratum channel, then hot water after heated is obtained, hot water after heated flows into the water outlet well, and then the hot water is sent to the water outlet well.

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Patent Citations (2)

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NO-Patent Citations (1)

    Title
    曾梅香等: "天津地区干热岩地热资源开发利用前景浅析", 《中国地热资源开发与保护——全国地热资源开发利用与保护考察研讨会论文集》, 31 December 2007 (2007-12-31)

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