CN103696751A - Method for mining underground sodium sulfate decahydrate by drilling hot water dissolving - Google Patents
Method for mining underground sodium sulfate decahydrate by drilling hot water dissolving Download PDFInfo
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- CN103696751A CN103696751A CN201310674664.1A CN201310674664A CN103696751A CN 103696751 A CN103696751 A CN 103696751A CN 201310674664 A CN201310674664 A CN 201310674664A CN 103696751 A CN103696751 A CN 103696751A
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Abstract
The invention relates to a method for mining underground sodium sulfate decahydrate by drilling hot water dissolving. The method comprises the following steps of A, well distributing, drilling a vertical well (1) in the area of a sodium sulfate decahydrate mining area near a four-effect vacuum evaporation brine production shop, enabling the well depth to reach a bottom plate of a sodium sulfate decahydrate layer, and drilling two horizontal wells (2, 3) with smaller vertical well depth in the horizontal direction to be communicated with the vertical well; B, cavity dissolving, injecting fresh water with certain temperature from the first horizontal well (2), flowing through the second horizontal well (3), and enabling the brine to flow out of the vertical well (1); C, cavity re-dissolving, after the cavity dissolving is completed, injecting fresh water with certain temperature from the second horizontal well (3), flowing through the first horizontal well (2), and circulating for a period of time repeatedly; D, production, after the cavity re-dissolving is finished, turning to the normal production. The method has the advantage that the three wells are arranged in a triangle way, so the mining area is expanded, the utilization rate of deposits and the concentration of the brine are improved, and the production cost of the brine is reduced.
Description
Technical field
The present invention relates to a kind of mirabilite ore exploitation method, be specifically related to the method for the molten recovery of subterranean mirabilite ore of a kind of drilling well hot water.
Background technology
In to the exploitation method of all kinds of non-metallic inorganic salt mirabilite ores, for outdoor or the thinner or dark glauberite of covering, glauber's salt and salt mineral reserve, employing is peeled off and is covered rear mechanical man-made recovery's solid mineral or adopt drilling solution mining, all there is at home report, the drilling solution mining of especially underground glauber's salt all has patent, has successful production company.But for being imbedded in 300 meters of left and right, and without the mirabilite hydrate ore deposit of adjoining rock, for the patent No. " 03124778.4 " " 200710004894.1 ", " 200610008019.6 ", " 99114212.8 ", all adopt the underground mirabilite ore of solution mining, but what adopt is drilling well Dui Jing UNICOM solution mining, Er Jing UNICOM solution mining namely, its weak point is that Dui Jing UNICOM production capacity bittern concentration is low, and cost of winning is high.
For the salt deposit that has certain buried depth, facts have proved that the method for most economical, the safest, environmental protection is solution mining.Dalate Banner mirabilite ore belongs to the mirabilite hydrate ore deposit of medium buried depth, the fixed diagenesis in end, top board stratum, and softer, underground water is abundanter.Adopt Er Jing UNICOM drilling solution mining, realize large-scale industrialization and produce, acquire a certain degree of difficulty and limitation, cause mining rate low, bittern concentration is low, and cost is high, comprehensively each factor.
Summary of the invention
The technology of the present invention is for problems of the prior art.
The technical solution that realizes above-mentioned purpose is:
The method in the molten recovery of subterranean mirabilite hydrate of drilling well hot water ore deposit, comprises the following steps:
A, well spacing: within the scope of the mirabilite deposit production zone of next-door neighbour's quadruple effect vacuum evaporation bittern production department, make a call to a vertical shaft, well depth is to saltcake seam floor, and then make a call to that two vertical well depths are more shallow, radius is to the horizontal wells of the level trend of saltcake ore bed and described vertical shaft UNICOM;
B, molten chamber: after described two horizontal wells and described vertical shaft UNICOM, the fresh water of uniform temperature is injected from the first horizontal well, through the second horizontal well, flow, and flow out bittern from described vertical shaft;
C, molten chamber again: after molten chamber forms, then from the second horizontal well, inject the fresh water of uniform temperature, through the first horizontal well, flow, and flow out bittern, iterative cycles a period of time from described vertical shaft;
D, production: after finish in molten chamber again, proceed to normal production, the fresh water of uniform temperature is injected from the first horizontal well, through the second horizontal well, flow, and flow out bittern from described vertical shaft.
Preferably, in A step well spacing process, the vertical shaft that vertical shaft can be used as a plurality of triangles minery is simultaneously used, and is connected with a plurality of horizontal wells in each triangle minery.
Preferably in the process of the molten chamber of B step, with the fresh water of 40-50 ℃ of the speed implantation temperature of 20-30 cubic meter per hour.
Preferably in C step again in the process of molten chamber, be 72 hours circulation timei.
Preferably in D step manufacturing process, with the fresh water of 60-70 ℃ of the speed implantation temperature of 50-80 cubic meter per hour.
Preferably at step B, C, in D process, the fresh water of uniform temperature all comes for quadruple effect vacuum evaporation two is to quadruple effect condensation hot water and end effect circulation of tail gas hot water.
The method in the molten recovery of subterranean mirabilite hydrate of drilling well hot water of the present invention ore deposit is Mitsui UNICOM, wherein; Er Ge horizontal well UNICOM is in a vertical shaft, and three wells are triangularly arranged, and have expanded productive area, have improved mineral deposit utilization rate and bittern concentration, have reduced mining brine expense.
The present invention produces glauber salt with the method in the molten recovery of subterranean mirabilite hydrate of drilling well hot water ore deposit and organically combines, and does not need additionally to add water, can reach thermal balance, and water balance is realized low-phase energy comprehensive utilization.
Accompanying drawing explanation
Accompanying drawing 1 is that while using the method in the molten recovery of subterranean mirabilite hydrate of drilling well hot water of the present invention ore deposit, mining area is arranged and bittern flows to schematic diagram
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
The present invention is collected in confining pressure storage tank by two of quadruple effect vacuum evaporation to quadruple effect condensation hot water, with end effect circulation of tail gas hot water circuit groove UNICOM, mixed hot water is beaten to drilling well Mitsui triangle UNICOM one horizontal well and is entered well by pipeline with hot high pressure water pump, through straight well and another horizontal well, walk triangular heat and dissolve the qualified contains sodium sulfate bittern of underground mirabilite hydrate ore deposit stripping, horizontal well water outlet pipe end installs water outlet whirligig additional, formation water outlet rotation, in order to increasing molten ore deposit speed intensity, improve bittern concentration.
Due to the dissolution characteristics of its mirabilite hydrate, initially, along with temperature raises, solubility improves, and reaches after critical point, and solubility declines, and separates out with anhydrous sodium sulfate simultaneously.Saturated bittern temperature is fallen, with sal glauberi crystallization.Stop up the disadvantages such as molten chamber and well casing.Be pressed into fresh water and mirabilite hydrate ore deposit proportional control is 1:1, temperature is not less than 80 ℃, goes out bittern concentration Na2SO4 content and is not more than and equals 20%, and temperature is controlled and is not less than 50 ℃.Two of quadruple effect vacuum evaporation is delivered to respectively open slot to quadruple effect condensation hot water through steam trap pipeline, and with quadruple effect tail vapour cycle groove UNICOM, after mixing, hot water reaches 60 ℃.Quadruple effect tail vapour cycle groove cooling adopts below precipitation cooling pond cold water circulation temperature lowering to 50 ℃.Guarantee quadruple effect vacuum.
The method in the molten recovery of subterranean mirabilite hydrate of drilling well hot water ore deposit, comprises the following steps:
A, well spacing: within the scope of the mirabilite deposit production zone of next-door neighbour's quadruple effect vacuum evaporation bittern production department, make a call to a vertical shaft 1, well depth is to saltcake seam floor, and then make a call to that two vertical well depths are more shallow, radius is to the horizontal wells 2,3 of the level trend of saltcake ore bed and described vertical shaft UNICOM;
B, molten chamber: after described two horizontal wells 2,3 and described vertical shaft 1 UNICOM, the fresh water of uniform temperature is injected from the first horizontal well 2, through the second horizontal well 3, flow, and flow out bittern from described vertical shaft 1;
C, molten chamber again: after molten chamber forms, then from the second horizontal well 3, inject the fresh water of uniform temperatures, through the first horizontal well 2, flow, and flow out bittern, iterative cycles a period of time from described vertical shaft 1;
D, production: after finish in molten chamber again, proceed to normal production, the fresh water of uniform temperature is injected from the first horizontal well 2, through the second horizontal well 3, flow, and flow out bittern from described vertical shaft 1.
2, according to the method in the molten recovery of subterranean mirabilite hydrate of the drilling well hot water ore deposit of claim 1, wherein, in A step well spacing process, vertical shaft 1 can be used as a plurality of triangles minery 6,7 simultaneously, 8 vertical shaft is used, with a plurality of horizontal wells 2 in each triangle minery 6,7,8,3,4,5 are connected.
Below in conjunction with the mining area in accompanying drawing 1, arrange that schematic diagram elaborates concrete steps of the present invention.
As shown in Figure 1, first, within the scope of the mirabilite deposit production zone apart from quadruple effect vacuum evaporation bittern production department 500-1000 rice, make a call to a vertical shaft 1, well depth is to saltcake seam floor, then apart from vertical shaft 300-500 rice, maximum 800 meters, then make a call to two peupendicular holes and be deep to 110 meters of radiuses to the first and second horizontal wells 2,3 and vertical shaft 1 UNICOMs of saltcake ore bed level trend, two horizontal wells 2,3 and vertical shaft 1 around formation minery, region 6; Afterwards, after Dai Sange well UNICOM, with 20-30 cubic meter per hour, temperature 40-50 ℃ of fresh water, from the first horizontal well 2, flows through the second horizontal well 3, and flows out bittern from described vertical shaft 1; Then, after molten chamber forms, from the second horizontal well 3, inject the fresh water of uniform temperature, through the first horizontal well 2, flow, and flow out bittern from described vertical shaft 1, through repeated multiple times circulation 72 hours; Finally, molten chamber is got through completely, and with 50-80 cubic meter per hour, temperature 60-70 ℃ of fresh water, from the first horizontal well 2, through the second horizontal well 3, goes out bittern from vertical shaft 1, and sodium sulphate content reaches more than 20%, proceeds to normal production.
As shown in Figure 1, the public vertical shaft that vertical shaft 1 can be used as a plurality of triangles minery 6,7,8 is simultaneously used, and with a plurality of horizontal wells 2,3 in each triangle minery 6,7,8,4,5 are connected.The molten chamber step in other mining areas and stages of mining are as hereinbefore.
Take the major advantage of said method to be, heat source does not need separately to establish boiler or the heating of other method, takes full advantage of the waste heat of quadruple effect vacuum evaporation, has saved the energy, realize glauber salt production heat balance and water balance, reached the environmental requirement of wastewater zero discharge.The drilling well Mitsui triangle underground mirabilite hydrate of UNICOM's pyrolysis ore deposit, has increased molten ore faces long-pending, has improved the exploitation utilization rate in ore deposit, has improved and halogen concentration, and the cost that has reduced mining brine also comprehensively reduces costs and lays the foundation for glauber salt simultaneously.
Above-mentioned specific embodiment is described by example, should be understood that, these embodiment are subject to the impact of different distortion and optional form.It should also be further understood that, claim is not meaned and is limited to disclosed particular form, and should cover all distortion, the equivalence that drop in essence of the present invention and scope, replaces and optional mode.
Claims (6)
1. the method in the molten recovery of subterranean mirabilite hydrate of drilling well hot water ore deposit, comprises the following steps:
A, well spacing: within the scope of the mirabilite deposit production zone of next-door neighbour's quadruple effect vacuum evaporation bittern production department, make a call to a vertical shaft (1), well depth is to saltcake seam floor, and then make a call to that two vertical well depths are more shallow, radius is to the horizontal wells (2,3) of the level trend of saltcake ore bed and described vertical shaft UNICOM;
B, molten chamber: after described two horizontal wells (2,3) and described vertical shaft (1) UNICOM, the fresh water of uniform temperature is injected from the first horizontal well (2), through the second horizontal well (3), flow, and flow out bittern from described vertical shaft (1);
C, molten chamber again: after molten chamber forms, then from the second horizontal well (3), inject the fresh water of uniform temperature, through the first horizontal well (2), flow, and flow out bittern, iterative cycles a period of time from described vertical shaft (1);
D, production: after finish in molten chamber again, proceed to normal production, the fresh water of uniform temperature is injected from the first horizontal well (2), through the second horizontal well (3), flow, and flow out bittern from described vertical shaft (1).
2. according to the method in the molten recovery of subterranean mirabilite hydrate of the drilling well hot water ore deposit of claim 1, wherein in A step well spacing process, the vertical shaft that vertical shaft (1) can be used as a plurality of triangles minery (6,7,8) is simultaneously used, with each triangle minery (6,7,8) a plurality of horizontal wells (2,3,4,5) be connected.
3. according to the method in the molten recovery of subterranean mirabilite hydrate of the drilling well hot water ore deposit of claim 1, wherein in the process of the molten chamber of B step, with the fresh water of 40-50 ℃ of the speed implantation temperature of 20-30 cubic meter per hour.
4. according to the method in the molten recovery of subterranean mirabilite hydrate of the drilling well hot water ore deposit of claim 1, wherein in C step again in the process of molten chamber, be 72 hours circulation timei.
5. according to the method in the molten recovery of subterranean mirabilite hydrate of the drilling well hot water ore deposit of claim 1, wherein in D step manufacturing process, with the fresh water of 60-70 ℃ of the speed implantation temperature of 50-80 cubic meter per hour.
6. according to the method in the molten recovery of subterranean mirabilite hydrate of the drilling well hot water ore deposit of claim 1, wherein at step B, C, in D process, the fresh water of described uniform temperature all comes for quadruple effect vacuum evaporation two is to quadruple effect condensation hot water and end effect circulation of tail gas hot water.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234667A (en) * | 2014-07-18 | 2014-12-24 | 张传文 | Brine channel, and system and excavation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241676A (en) * | 1999-05-15 | 2000-01-19 | 洪泽县化工(集团)总公司 | Mirabilite exploiting water-dissolution process with two wells communicated by horizontal hole |
| CN1399058A (en) * | 2002-08-09 | 2003-02-26 | 太原理工大学 | Group well cracking controlled water-soluble recovery method for saline minerals bed |
| RU2229587C2 (en) * | 2002-01-09 | 2004-05-27 | Вахромеев Андрей Гелиевич | Method for extracting liquid mineral inclined to temperature phase transition |
| CN1558086A (en) * | 2004-02-09 | 2004-12-29 | 太原理工大学 | Water solution mining method controlled by fracturing pressure immersion in glauberite mine group wells |
| CN1614190A (en) * | 2004-09-21 | 2005-05-11 | 化工部长沙设计研究院 | Well drilling and water dissolving process for sodium sulfate hydrate |
| CN101012742A (en) * | 2007-02-07 | 2007-08-08 | 鄂尔多斯市奥利星煤化有限责任公司 | Water soluble exploitation method of mirabilite mine by butt-joint connection |
| CN102191932A (en) * | 2011-04-08 | 2011-09-21 | 太原理工大学 | In-situ heat injection steeping control aqueous dissolution exploitation method of glauberite ore |
-
2013
- 2013-12-12 CN CN201310674664.1A patent/CN103696751A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241676A (en) * | 1999-05-15 | 2000-01-19 | 洪泽县化工(集团)总公司 | Mirabilite exploiting water-dissolution process with two wells communicated by horizontal hole |
| RU2229587C2 (en) * | 2002-01-09 | 2004-05-27 | Вахромеев Андрей Гелиевич | Method for extracting liquid mineral inclined to temperature phase transition |
| CN1399058A (en) * | 2002-08-09 | 2003-02-26 | 太原理工大学 | Group well cracking controlled water-soluble recovery method for saline minerals bed |
| CN1558086A (en) * | 2004-02-09 | 2004-12-29 | 太原理工大学 | Water solution mining method controlled by fracturing pressure immersion in glauberite mine group wells |
| CN1614190A (en) * | 2004-09-21 | 2005-05-11 | 化工部长沙设计研究院 | Well drilling and water dissolving process for sodium sulfate hydrate |
| CN101012742A (en) * | 2007-02-07 | 2007-08-08 | 鄂尔多斯市奥利星煤化有限责任公司 | Water soluble exploitation method of mirabilite mine by butt-joint connection |
| CN102191932A (en) * | 2011-04-08 | 2011-09-21 | 太原理工大学 | In-situ heat injection steeping control aqueous dissolution exploitation method of glauberite ore |
Non-Patent Citations (2)
| Title |
|---|
| 李志萍: "芒硝溶解特性的实验研究", 《太原理工大学学报》 * |
| 高山: "《现代城市节约用水技术与国际通用管理成功案例典范》", 31 August 2003, 北京：新华出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234667A (en) * | 2014-07-18 | 2014-12-24 | 张传文 | Brine channel, and system and excavation method thereof |
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