Group-well fracture pressure steeping control aqueous fusion exploitation method of glauberite bal

A mining method and glauberite technology, which is applied in the mining of glauberite ore, group well fracturing, pressure soaking, and water-soluble mining, can solve the problems of high labor intensity, dangerous operating environment, and high mining cost of the mining method, and achieve The effects of high-efficiency mining, increased dissolution rate, and high recovery rate

Inactive Publication Date: 2007-02-14
TAIYUAN UNIV OF TECH
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Problems solved by technology

The mining method of tunnel excavation and chamber soaking is labor-intensive, high mining cost, dangerous working environment, and low recovery rate; at the same time, because the minerals excavated from the tunnel are piled up on the ground, it will cause serious pollution to the environment

Method used

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  • Group-well fracture pressure steeping control aqueous fusion exploitation method of glauberite bal
  • Group-well fracture pressure steeping control aqueous fusion exploitation method of glauberite bal

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Embodiment Construction

[0025] Referring to Figures 1 and 2,

[0026] A method of fracturing controlled pressure immersion water solution mining in glauberite mines, the steps of which are as follows:

[0027] (1) According to geological data, after determining the physical and mechanical properties and burial characteristics of the ore layer, according to the requirements of drilling technical specifications, select a reasonable well spacing (100m) and well location, and arrange well patterns No. 0, No. 1, No. 2, and No. 3 Wells No. 4 and No. 4 (the well pattern consists of 5 wells), implement drilling;

[0028] (2) After the open well is completed, run the casing and perform corresponding cementing according to the specifications;

[0029] (3) After all the wells are completed and cemented, the central No. 0 well is selected as the water injection well (fracturing well), and the No. 1, No. 2, No. 3, and No. 4 wells are used as the target wells, and the central No. 0 well is implemented with a high...

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Abstract

The well group cracking, pressure soaking and water dissolution controlling process for exploiting glauberite ore belongs to the field of exploiting refractory salt mineral deposit. Available water dissolution process has demerits of great labor strength, high cost, dangerous operation environment, low recovery ratio and environment pollution. The exploiting process of the present invention includes arranging several communicated wells, injecting high pressure water to soak for long period, recovering the brine water of certain concentration, re-injecting water and recovering brine water, and so on. The present invention has the features of well group cracking, pressure soaking and controlled water dissolution, and is one ideal scheme of exploiting refractory salt mineral deposit.

Description

Technical field: [0001] The invention belongs to the mining category of underground insoluble salt deposits, is particularly suitable for the mining of Glauberite ore, and is a mining method of Glauberite ore by group well fracturing, pressure soaking, and controlling water dissolution. Background technique: [0002] The mining of underground salt deposits is currently mostly carried out by the water solution mining method. It can be known from the "glauber's salt mining method" announced by CN1069732C and the "salt layer drilling water mining fixed-point extraction method" announced by CN1009383B that the water-soluble mining methods commonly used in the mining of salt deposits in the prior art mainly include single well convection method, double well Well hydraulic fracturing connected convection or directional docking connected convection method, etc. These methods have the disadvantages of low recovery rate and high mining cost. CN 1399058A announces the 'method for co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/28
Inventor 赵阳升梁卫国徐素国关克伟康殿海杨栋胡耀青冯增朝
Owner TAIYUAN UNIV OF TECH
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