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Cracking exploitation for reussin mine

A mining method and technology for mirabilite ore, which are applied in the fields of mining fluids, earthwork drilling, wellbore/well components, etc., can solve the problems of neglecting the rapid dissolution of the soluble ore layer, the difficulty of mining wells, and the increase of underground accidents. The effect of mine investment, improving mining rate and reducing underground accidents

Inactive Publication Date: 2006-08-16
上海太平洋化工(集团)淮安元明粉有限公司
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Problems solved by technology

Its shortcoming is that nitric water is very easy to crystallize in the pipeline, causing pipe blockage and increasing downhole accidents
Its shortcoming is that long-distance horizontal directional drilling is required, and it is difficult to excavate the mine, and because the target well only hits the vertical center of the ore seam, it ignores the fast dissolution of the soluble ore seam, the slow dissolution of the side, and the basic The natural law of not dissolving downwards results in a large area of ​​ore loss and a low mining rate

Method used

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  • Cracking exploitation for reussin mine

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Embodiment

[0018] Embodiment: After the geological structure of a certain Glauber's salt mine has been ascertained, it is determined that the burial depth of the ore bed is relatively deep, the ore body has no fractures, the floor interface of the ore bed is impermeable, and the thickness of the ore bed is greater than 2M, which is suitable for implementing the present invention. Referring to the accompanying drawings, the specific implementation steps are as follows:

[0019] (1) Drilling target well 1

[0020] The target well 1 is drilled to the depth of the mine floor interface 5. In this embodiment, the target well 1 is a straight well. In this embodiment, the depth of the target well 1 is 2115 meters.

[0021] (2) Drilling directional well 2

[0022] Along the ore vein direction, the well position of the directional well 2 is designed at a distance of 300M from the above-mentioned target well. The directional well 2 is drilled to the depth of the bottom plate interface 5 of the ore...

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Abstract

A method of mirabilite pressing cracks mine is carried out by: 1. drill to the aim well which is deep to base interface of ledge; 2. drill to directional well which is deep to base interface of ledge, and the bottom of the directional well tend to the direction of the aim well along the base interface of ledge; 3. pour water and exert pressure to the directional well until crannies on the base interface of ledge which connect with the aim well; 4. water-solubility mining. The advantages of this method are: improving the veracity and reliability of pressing crack, saving fund, improving mine ratio and concentration of brine.

Description

technical field [0001] The invention relates to a mining method of thenardite ore, in particular to a fracturing mining method of thenardite ore. Background technique [0002] At present, shallow thenardite mines and exposed thenardite mines usually adopt the open-pit mining method. For the thenardite ore body with a certain burial depth, the water-soluble method is used for mining. The traditional water-soluble method includes single-well convection or double-well horizontal drilling connected water-soluble method The single-well convection mining method refers to drilling a vertical well into the ore seam, and setting the outer casing and the central pipe in the vertical well, injecting hot water into the central pipe, using the hot water to dissolve the thenardite in the ore seam, and the thenardite solution from the central pipe and the outer casing The interlayer between the pipes is extracted to the ground, and then beneficiated. Its disadvantage is that nitric water ...

Claims

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Application Information

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IPC IPC(8): E21B43/00
Inventor 唐伯祥王斌涛居忠
Owner 上海太平洋化工(集团)淮安元明粉有限公司
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