CN1614190A - Well drilling and water dissolving process for sodium sulfate hydrate - Google Patents
Well drilling and water dissolving process for sodium sulfate hydrate Download PDFInfo
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- CN1614190A CN1614190A CN 200410046785 CN200410046785A CN1614190A CN 1614190 A CN1614190 A CN 1614190A CN 200410046785 CN200410046785 CN 200410046785 CN 200410046785 A CN200410046785 A CN 200410046785A CN 1614190 A CN1614190 A CN 1614190A
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Abstract
A technology for mining the decahydrated sodium sulfate (micrabilite) includes such steps as drilling wells, combining 2-3 wells as a group, which are communicated with each other, pouring hot water in wells, segmentally controlling the dissolving, mining the bittern, and natural or industrial concentrating.
Description
Technical field
The present invention relates to a kind of sal glauberi deposit mining technology, relate in particular to a kind of technology of utilizing drilling solution method exploitation sal glauberi mineral deposit.
Background technology
Sodium sulphate (being commonly called as " glauber salt " or saltcake) is a kind of widely used industrial chemicals, is mainly used in industries such as synthetic detergent, printing and dyeing, glass, papermaking, medicine, leather, and consumption is very big.Yet each big glauber salt enterprise all is faced with the phenomenon of resource scarcity at present.On the other hand, some mirabilite deposit, because overlying rock is soft, silt content is big in the ore bed, buries shallowly, and ground temperature is low, contain ten crystallizations water in the saltcake crystal, cause the exploited bittern water concentration low, adopt the existing water-soluble law technology of known conventional drilling to be difficult to exploitation, low concentration bittern is directly processed also very uneconomical.For example, Inner Mongolia Autonomous Region has the mirabilite deposit of China's reserves maximum, but because of its mineral deposit belongs to the above-mentioned type, thereby this mineral deposit finds that two never are exploited during the last ten years.
Summary of the invention
The objective of the invention is to overcome the above-mentioned defective of existing sal glauberi deposit mining technology, a kind of production practice that is suitable for the sal glauberi mineral deposit of soft overlying rock is provided.
The production practice in the present invention's sal glauberi mineral deposit may further comprise the steps: (1) shaft building is determined well spacing parameter and casing programmes such as rational well spacing, group distance, array pitch according to the different overlying rock characteristics in mine and the dissolution characteristics of soluble mineral; Generally, should Mitsui or two wells be a well group, arrange along the seam floor isohypse, well spacing 25-35m, group distance and array pitch are 50-70m, casing programme is preferably three-tube structure (protective casing+endless tube+central tube), to guarantee the pit shaft safety in the recovery process; (2) build groove and adopt lubricating pad, hot-water flooding to build groove, the water filling temperature is between 20-32 ℃, is raise gradually by low, builds the groove height and is defined as 3-5m according to the concrete condition of underseam; In building the groove process, to keep the oil mass abundance in the molten chamber, prevent molten, guarantee that the molten chamber realization of rapid expansion well group is communicated with (when taking place to block up the well accident in building the groove process, can adopt known pressurization de-plugging, change the endless form de-plugging, be interrupted the pressurization de-plugging, propose method de-pluggings such as pipe de-plugging, integrative blockage relieving method, but when adopting the pressurization de-plugging, operation is steady, prevents to press to wear the stratum, guarantees well bore safety).The concrete operations flow process is: will mix with light bittern (or clear water) from the remaining hot water of processing factory to reach and build the desired temperature of groove (initial stage is 20 ℃, be 32 ℃ latter stage, the temperature ascensional range is that molten chamber radius increases 2-3m, temperature is heightened 2 ℃) after, by water injecting pump pressurization (building groove phase operating pressure is 0.8-1.0MPa), through each instrument (pressure meter, thermometer, flow meter and sampling) parameter detecting (record pressure, temperature, flow, concentration), carry, be assigned to and respectively build the groove well, be injected into the molten ore deposit of ore bed (individual well water injection rate 20-25m by water injection pipe (endless tube or central tube) through the metering back
3/ h), bittern behind the molten ore deposit returns out well head by halogen mining pipe (central tube or endless tube), parameter detecting (record pressure, temperature, flow, concentration) through instrument (pressure meter, thermometer, flow meter and sampling), qualified bittern is transported to the bittern sedimentation basin, through being transported to processing factory after the evaporation and concentration of salt pan; Defective bittern is transported to light halogen sedimentation basin, and post precipitation uses for the circulation water filling.The flow process of injection system is, oil process filling pump pressurization (building groove phase operating pressure is 1.0-1.2MPa) from oil storage tank, pass through instrument (pressure meter, flow meter) parameter detecting (record pressure, flow) then, be transported to and build the groove well, be injected into ore bed by oil fuel tube (protective casing), swim in the top in molten chamber; (3) going up in the molten production molten production exploitation, to adopt lubricating pad control to go up molten, and bench mining is divided in the water-soluble ore deposit of heat injection.The water filling temperature is definite according to the hot water supply situation, but must not be lower than 32 ℃, and rise of flight is determined between 4-6m according to working seam thickness; The concrete operations flow process is: will mix from the remaining hot water of processing factory and clear water the light bittern of groove well (or build), after reaching the desired temperature of production (〉=32 ℃), by water injecting pump pressurization (the production period operating pressure is 0.6-0.8MPa), through each instrument (pressure meter, thermometer, flow meter and sampling) parameter detecting (record pressure, temperature, flow, concentration), carry, be assigned to and respectively produce well group, through metering (well group water injection rate 30-35m
3/ h) back is injected into the molten ore deposit of ore bed by water injection well, bittern behind the molten ore deposit returns out well head by halogen mining well, parameter detecting (record pressure, temperature, flow, concentration) through instrument (pressure meter, thermometer, flow meter and sampling), bittern is transported to the bittern sedimentation basin, through being transported to processing factory after the evaporation and concentration of salt pan, the tail washings of processing factory turns back to the well site and recycles for exploitation; Or directly bittern is transported in the storage halogen jar between van cooler, produce ten water nitre for processing factory through refrigerating plant, tail washings turns back to the well site and recycles for exploitation; It is stable that the water filling temperature should keep, and the suitable water flooding regime that regularly changes, to guarantee the balanced development in molten chamber; When last molten exploitation, to keep regular oiling (300-500l/3-4d), be about to oil process filling pump pressurization (0.8-1.0MPa) from oil storage tank, pass through instrument (pressure meter, flow meter) parameter detecting (record pressure, flow) then, be transported to water injection well (or halogen mining well), be injected into ore bed by oil fuel tube (protective casing), swim in the top in molten chamber.(4) concentration of the concentrated former halogen of extraction of former halogen can adopt known method to concentrate between 100-150g/l; But in big, the place that winter is cold of evaporation capacity in summer, should select for use summer bittern in salt Tanaka evaporation and concentration, the crystallization in winter is the method for concentration of ten water nitre; Also can adopt the freezing and crystallizing device directly to produce ten water nitre.Bittern or ten water nitre after concentrating send the process plants glauber salt.
Compare with the method in known drilling solution lubricating pad method exploitation saltcake ore deposit, main contribution of the present invention is: determine well spacing parameter and casing programmes such as rational well spacing, group distance, array pitch; The well group individual well is built groove technology and technological parameter, particularly builds groove water filling temperature controlling; Determine reasonably to go up molten production production practice and technological parameter, particularly exploit the water filling temperature controlling.
The present invention's sal glauberi deposit mining technology is particularly suitable for that overlying rock is soft, and silt content is big in the ore bed, bury shallow, the mirabilite deposit that ground temperature is low, cost of winning is low, and is very economical worthwhile.
The specific embodiment
Embodiment 1
(1) shaft building determines that according to the dissolution characteristics of mine overlying rock characteristics and soluble mineral Mitsui is a well group, arrange along the seam floor isohypse, and well spacing 25m, group distance and array pitch are 50m, and casing programme is three-tube structure (protective casing+endless tube+central tube); (2) building groove will mix the temperature that reaches 20 ℃ (building groove period average water filling temperature will be 26 ℃ with light bittern (or clear water) from the hot water of boiler room, be 32 ℃ latter stage) after, by the water injecting pump pressure water injection, water injection pressure is 0.8MPa, through pressure meter, thermometer, pressure is write down in flow meter and sampling simultaneously, temperature, flow, concentration, then, be transported to and build the groove well and be injected into the molten ore deposit of ore bed (individual well water injection rate 203/h) by water injection pipe (endless tube), bittern behind the molten ore deposit returns out well head by halogen mining pipe, through detected pressures, temperature, flow, concentration, qualified bittern is transported to the bittern sedimentation basin, defective bittern is transported to light halogen sedimentation basin, and post precipitation uses for the circulation water filling.Annotate once oil every day during building groove, and injection flow is pressed 200l/d control.The flow process of injection system is, is pressurized to 1.0-1.2MPa from the oil of oil storage tank through filling pump, passes through pressure meter, cmf record pressure and flow then, is transported to and builds the groove well, is injected into ore bed by oil fuel tube, swims in the top in molten chamber; (3) go up molten production will mix with clear water from the hot water of boiler room reach 32 ℃ of temperature after, by the water injecting pump pressure water injection, average water injection pressure is 0.65MPa, write down pressure, temperature, flow, concentration simultaneously through pressure meter, thermometer, flow meter and sampling, afterwards, be transported to the production well group and be injected into the molten ore deposit of ore bed (well group water injection rate 30m by water injection well
3/ h), the bittern behind the molten ore deposit returns out well head by halogen mining well, detection record pressure, temperature, flow, concentration, and bittern is transported to the bittern sedimentation basin; Through being transported to processing factory after the evaporation and concentration of salt pan, the tail washings of processing factory turns back to the well site and recycles for exploitation; Go up molten production period and annotate oil weekly twice, each injection flow is 300L, the flow process of injection system is, oil from oil storage tank is pressurized to 1.0-1.2MPa through filling pump, pass through pressure meter, cmf record pressure and flow then, be transported to water injection well, be injected into ore bed, swim in the top in molten chamber by oil fuel tube.(4) former halogen concentrates employing bittern in summer in salt Tanaka evaporation and concentration, and the crystallization in winter is the method for concentration of ten water nitre.
Embodiment 2
(1) shaft building determines that according to the dissolution characteristics of mine overlying rock characteristics and soluble mineral two wells are a well group, arrange along the seam floor isohypse, and well spacing 35m, group distance and array pitch are 70m; (2) building groove will mix the temperature that reaches 20 ℃ from boiler room hot water (building groove period average water filling temperature will be 28 ℃ with light bittern (or clear water), be 32 ℃ latter stage) after, by the water injecting pump pressure water injection, water injection pressure is 1.0MPa, is transported to build the groove well and be injected into the molten ore deposit of ore bed (individual well water injection rate 253/h) by water injection pipe (central tube); Per 2 days notes are once oily during building groove, and injection flow is pressed 300l/d control.The flow process of injection system is, is pressurized to 1.0-1.2MPa from the oil of oil storage tank through filling pump, passes through pressure meter, cmf record pressure and flow then, is transported to and builds the groove well, is injected into ore bed by oil fuel tube, swims in the top in molten chamber; (3) go up molten production will mix with clear water from the hot water of boiler room reach 32 ℃ of temperature after, by the water injecting pump pressure water injection, on average water injection pressure is 0.7MPa, well group water injection rate 35m
2/ h; Go up molten production period and annotate oil weekly twice, each injection flow is 350L; (4) former halogen concentrates and adopts the freezing and crystallizing device directly to produce ten water nitre.
Other are with embodiment 1.
Claims (3)
1, the production practice in a kind of sal glauberi mineral deposit, it may further comprise the steps: it is that Mitsui or two wells are one group that well group is produced in (1) shaft building, well spacing 25-35m, group distance and array pitch are 50-70m, arrange that along the seam floor isohypse casing programme is a three-tube structure; (2) build groove and adopt hot-water flooding, lubricating pad method to build groove, the water filling temperature is raise gradually by low, and the water filling temperature range is built the groove height and is defined as 3-5m according to the concrete condition of underseam between 20-32 ℃; (3) go up molten production and adopt lubricating pad control upward molten, bench mining is divided in the water-soluble ore deposit of heat injection, and the water filling temperature is equal to or higher than 32 ℃; (4) former halogen concentrates..
2, the production practice in sal glauberi according to claim 1 mineral deposit is characterized in that described former halogen method for concentration is: summer bittern in salt Tanaka evaporation and concentration, crystallization is a sal glauberi in the winter time.
3, the production practice in sal glauberi according to claim 1 mineral deposit is characterized in that, former halogen directly is delivered to the freezing and crystallizing device and produces sal glauberi.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100467852A CN100379938C (en) | 2004-09-21 | 2004-09-21 | Well drilling and water dissolving process for sodium sulfate hydrate |
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| CNB2004100467852A CN100379938C (en) | 2004-09-21 | 2004-09-21 | Well drilling and water dissolving process for sodium sulfate hydrate |
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| CN1614190A true CN1614190A (en) | 2005-05-11 |
| CN100379938C CN100379938C (en) | 2008-04-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368477B (en) * | 2008-10-06 | 2011-08-17 | 中国科学院武汉岩土力学研究所 | Oil-water interface inspection and control method |
| CN103032059A (en) * | 2012-12-21 | 2013-04-10 | 陈建明 | Directional hydraulic fracturing connected mining method |
| CN103696751A (en) * | 2013-12-12 | 2014-04-02 | 内蒙古奥利星煤化集团有限责任公司 | Method for mining underground sodium sulfate decahydrate by drilling hot water dissolving |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101260801B (en) * | 2008-04-24 | 2011-06-15 | 化工部长沙设计研究院 | Well drilling hot melt separate zone production technology for oil-containing low infiltration native sulphur deposit |
| CN101660403B (en) * | 2009-09-18 | 2010-09-22 | 甘肃省敦煌市西域矿业化工有限责任公司 | Mining method of sodium sulphate ore |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337011C (en) * | 2003-08-29 | 2007-09-12 | 化工部长沙设计研究院 | Method for extracting mirabilite ore deposit by using drilling water soluble oil pad process |
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2004
- 2004-09-21 CN CNB2004100467852A patent/CN100379938C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101368477B (en) * | 2008-10-06 | 2011-08-17 | 中国科学院武汉岩土力学研究所 | Oil-water interface inspection and control method |
| CN103032059A (en) * | 2012-12-21 | 2013-04-10 | 陈建明 | Directional hydraulic fracturing connected mining method |
| CN103032059B (en) * | 2012-12-21 | 2015-12-09 | 陈建明 | A kind of directed hydraulic pressure burst communicatin exploitation method |
| CN103696751A (en) * | 2013-12-12 | 2014-04-02 | 内蒙古奥利星煤化集团有限责任公司 | Method for mining underground sodium sulfate decahydrate by drilling hot water dissolving |
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| CN100379938C (en) | 2008-04-09 |
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Granted publication date: 20080409 Termination date: 20100921 |