CN107388611A - A kind of method that rock salt bittern is preheated with directional-butted well - Google Patents
A kind of method that rock salt bittern is preheated with directional-butted well Download PDFInfo
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- CN107388611A CN107388611A CN201710858724.3A CN201710858724A CN107388611A CN 107388611 A CN107388611 A CN 107388611A CN 201710858724 A CN201710858724 A CN 201710858724A CN 107388611 A CN107388611 A CN 107388611A
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- well
- directional
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- main pipeline
- drilling
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/10—Geothermal collectors with circulation of working fluids through underground channels, the working fluids not coming into direct contact with the ground
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T2010/50—Component parts, details or accessories
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Abstract
The invention discloses a kind of method that rock salt bittern is preheated with directional-butted well, is being easy to the drilling well position of construction at salt manufacturing workshop selection two；A drilling well opening position construction straight well wherein, the drilling depth of straight well is 2500m ~ 5000m, and the formation temperature of straight well bottom is 75 DEG C ~ 140 DEG C, the setting of casing Cheng Jing into straight well；In another drilling well opening position construction directional well, directional well is connected with the bottom of straight well, orientation downhole end sets inclination section, into directional well into well at setting of casing to the target spot being docked and connected with straight well；Directional well upper end is connected with the first halogen transportation main pipeline, straight well upper end is connected with the second halogen transportation main pipeline, first halogen transportation main pipeline, directional well, straight well and the second halogen transportation main pipeline collectively form a closed halogen transportation passage, and salt manufacturing workshop is delivered to after the rock salt bittern that exploitation obtains is preheated by halogen transportation passage.This method can effectively reduce the production cost of salt making enterprises, and technique is simple.
Description
Technical field
The present invention relates to geothermal energy utilization and rock salt production technical field, and in particular to a kind of to preheat rock with directional-butted well
The method of bittern water.
Background technology
Salt mine is typically exploited using drilling solution method, and the product for exploiting to obtain is bittern, then that bittern is defeated
It is sent to vacuum salt making facility and explosive evaporation crystallization is carried out to bittern using steam, that is, solid salt is made.Existing salt making enterprises generation
Bittern used in solid salt is not generally first preheated, directly enters vacuum salt making facility after bittern purifying from mine.For mineral deposit
Shallower mine is buried, the brine temperature that drilling solution method is produced is relatively low, typically at 30 DEG C or so, in salt manufacturing production process
In need to consume substantial amounts of steam（Steam generally use coal-fired heating is made, it is necessary to consume a large amount of fire coals）, high energy consumption is coal-fired to take
With the nearly half for accounting for production cost.Therefore, how to reduce combustion the consumption of coal is the most important of salt making enterprises control cost
A ring.
Geothermal energy resources have the features such as widely distributed, to be easy to exploitation as a kind of novel energy mineral products.China has good
Geothermal energy resources condition, at present China's geothermal energy resources Land use systems to heat, bathing, plantation etc. based on, geothermal energy utilization
Conversion ratio it is also very low.
Drilling engineering technology is found broad application in the mineral explorations such as oil, natural gas, rock salt exploitation, and China's deep-well bores
Well technology has reached the depth of 8000m ultradeep wells in field use field, and extended reach directional well technology bottom hole displacement even can
To reach thousands of rice to a myriametre.
The content of the invention
It is an object of the present invention to overcome the shortcomings of to mention in background above technology and defect, there is provided one kind can effectively drop
The method that low production cost, technique simply preheat rock salt bittern with directional-butted well.
In order to solve the above technical problems, technical scheme proposed by the present invention is：
A kind of method that rock salt bittern is preheated with directional-butted well, comprises the following steps：
S1, it is being easy to the drilling well position of construction at salt manufacturing workshop selection two, this need to expire the distance between drilling well position at two
The construction requirement of sufficient directional-butted well；
S2, the straight well of drilling well opening position construction wherein, the drilling depth of the straight well are 2500m ~ 5000m, straight well bottom
Formation temperature be 75 DEG C ~ 140 DEG C, the setting of casing Cheng Jing into straight well；
S3, another drilling well opening position construct directional well, the directional well is connected with the bottom of straight well, under directional well
End is provided with inclination section, into directional well into well at setting of casing to the target spot being docked and connected with straight well；
S5, the upper end of directional well is connected with the first halogen transportation main pipeline, the upper end of straight well is connected with the second halogen transportation main pipeline
Connect, the first halogen transportation main pipeline, directional well, straight well and the second halogen transportation main pipeline collectively form a closed halogen transportation passage, will open
The rock salt bittern for adopting to obtain is delivered to salt manufacturing workshop after being preheated by the halogen transportation passage and further handled.
It is the problem of for existing salt making enterprises high energy consumption, of the invention by setting directional-butted well near salt manufacturing workshop,
Straight well and directional well are drilled into deep formation（2500m~5000m）, make full use of the geothermal energy resources of deep formation to carry out bittern
Preheating.Before entering salt manufacturing workshop and carrying out condensing crystallizing salt manufacturing, first bittern is preheated, bittern is in directional well and straight well
After carrying out abundant thermal energy exchange with deep formation, its temperature greatly improves, it is preheated after bittern have into vacuum salt making facility
The energy consumption of salt-making process is reduced to effect, the consumption of coal resources is significantly reduced, has saved production cost.Certainly, bittern
Flowing through directional-butted well needs to increase the lift of brine transportation pump, but increased lift just corresponds to 10km or so brine pipeline
Road length frictional head loss, the consumption of its increased electric power resource is less, still can generally substantially reduce the life of enterprise
Produce cost.In addition, the generation of pipeline scale can be reduced after bittern flow velocity is accelerated by the method for the present invention, after substantially reducing
The maintenance cost of phase.Directional-butted well is positioned close to the position in salt manufacturing workshop, avoids bittern after directional-butted well comes out
Temperature declines excessive.
The above-mentioned method that rock salt bittern is preheated with directional-butted well, it is preferred that in the step S3, the inclination section
Arc radius is 300m ~ 600m.If inclination section radius is too small to increase the difficulty and risk of construction, and reduces pre-heat effect；Make
Oblique section radius is excessive and can increase operating expenses.The present invention considers above-mentioned factor, and the arc radius of inclination section is arranged to
300m ~ 600m, it both ensure that pre-heat effect, reduced difficulty of construction, and reduced operating expenses again, and met orientation down-hole casing and consolidate
The requirement of well.
The above-mentioned method that rock salt bittern is preheated with directional-butted well, it is preferred that the second halogen transportation main pipeline it is another
End is connected with salt manufacturing workshop, and bittern conveys via the first halogen transportation main pipeline, directional well, straight well and the second halogen transportation main pipeline successively
To salt manufacturing workshop.The present invention is using the directional-butted well structure of a straight well and a directional well, and the cost of directional well is than straight
Well is high, and construction cost can be saved using a straight well, a directional well.The present invention is injected bittern by directional well defeated by straight well
Go out, advantageously reduce the drop mistake of brine temperature after preheating, also, the possibility blocked by the way of bittern is exported by straight well
Property it is smaller, even if occurring blocking scale problems, straight well also more preferably handles.
The above-mentioned method that rock salt bittern is preheated with directional-butted well, it is preferred that between the step S3 and step S5
Also step S4, the step S4 including carrying out well-flushing to the straight well and directional well are specially：Well-flushing medium is set by infusion
It is standby to be injected from straight well or directional well, the polluter in straight well and directional well is carried to ground.By well-flushing, bittern is improved
Purity, it is ensured that the product quality of gained rock salt.
The above-mentioned method that rock salt bittern is preheated with directional-butted well, it is preferred that in the step S1, drilling well position at two
The distance between be 600m ~ 1000m.The distance of two mouthfuls of wells should meet the execution conditions at the requirement and scene for orienting well construction, if
Drilling well positional distance is excessive at two, can cause the distance increase of directional well horizontal segment, and then increase operating expenses and difficulty of construction；If
Drilling well positional distance is too small at two, will be unfavorable for the construction of directional well.The distance between drilling well position at two（I.e. directional well is horizontal
Segment length）It is associated parameter with drilling depth.Drilling depth can accordingly reduce if horizontal segment length, if horizontal segment is short
The depth of drilling well can be increased to ensure bittern preheating section length.
Compared with prior art, the advantage of the invention is that：The present invention near salt manufacturing workshop by setting orientation docking
Well, the rock salt bittern for entering salt manufacturing workshop is preheated using the geothermal energy resources of deep formation.The average geothermic gradient of the earth's crust
It it is about 75 DEG C ~ 140 DEG C in deep 2500m ~ 5000m directional-butted well bottom formation temperature about per 25 DEG C of km.By halogen
Water is passed through directional-butted well, and bittern fully carries out heat exchange with stratum, improves the temperature of bittern, enter back into vacuum salt making facility system
Salt, greatly reduce energy consumption, reduce the coal resources consumption of salt making enterprises.For the little salt of mineral deposit buried depth
Ore deposit, salt making enterprises production cost can substantially be reduced using the method for the present invention.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structural representation of halogen transportation passage used in method of the invention.
Marginal data：
1st, straight well；2nd, directional well；3rd, target spot；4th, the first halogen transportation main pipeline；5th, the second halogen transportation main pipeline；21st, inclination section.
Embodiment
For the ease of understanding the present invention, the present invention is made below in conjunction with Figure of description and preferred embodiment more complete
Face, meticulously describe, but protection scope of the present invention is not limited to embodiment in detail below.
It should be strongly noted that when a certain element, to be described as " be fixed on, be fixed in, be connected to or be communicated in " another
When on element, it can be directly fixed, affixed, connection or connect on another element or by connecting among other
Fitting is indirectly fixed, affixed, connection or connection are on another element.
Unless otherwise defined, the implication that all technical terms used hereinafter are generally understood that with those skilled in the art
It is identical.Technical term used herein is intended merely to describe the purpose of specific embodiment, is not intended to the limitation present invention
Protection domain.
Embodiment：
A kind of method of the invention that rock salt bittern is preheated with directional-butted well, the structure of halogen transportation passage used is such as in this method
Shown in Fig. 1.By taking certain rock salt manufacturing enterprise as an example, 400 meters of its mineral deposit buried depth, drilling solution method produces brine temperature on 30 DEG C of left sides
It is right.The ore deposit production scale is 4,000,000 sides/year, produces 1,200,000 tons/year of solid salt.
It is being easy to the drilling well position of construction at salt manufacturing workshop selection two, the ground distance at two between drilling well position
For 600m；The straight well 1 of drilling well opening position construction wherein, the drilling depth of the straight well 1 are 3500m, the bottomland layer depth of straight well 1
Formation temperature is 95 DEG C in degree, the setting of casing Cheng Jing into straight well 1；
In another drilling well opening position construction directional well 2, directional well 2 is connected with the bottom of straight well 1, the lower end of directional well 2
Provided with inclination section 21, the arc radius of the inclination section 21 is 500m, and into directional well 2, setting of casing is extremely docked and connected with straight well 1
Into well at target spot 3；
Well-flushing water is injected by pumping-in equipment from straight well 1, the polluter in straight well 1 and directional well 2 is carried to ground；Will
The upper end of directional well 2 is connected with the first halogen transportation main pipeline 4, and the upper end of straight well 1 is connected with the second halogen transportation main pipeline 5；The
One halogen transportation main pipeline 4, directional well 2, the halogen transportation main pipeline 5 of straight well 1 and second collectively form a closed halogen transportation passage；Will exploitation
Obtained rock salt bittern is sent into directional well 2 from the first halogen transportation main pipeline 4, and bittern has directional well 2 to flow into straight well 1, then defeated through second
Halogen main pipeline 5 is delivered to salt manufacturing workshop and is further processed.Rock salt bittern enters salt manufacturing after directional-butted well preheats and filled
Temperature when putting is promoted to 75 DEG C or so.
Coal index experience is consumed under different brine temperatures according to related salt making enterprises, 75 DEG C of bittern salt manufacturing comprehensive energy consumptions are
74Kg marks coal/t, and 30 DEG C of bittern salt manufacturing comprehensive energy consumptions are that 140Kg marks coal/t.Thus, mark can be saved by producing 1,200,000 tons of solid salts
7.92 ten thousand tons of coal.Market according to 510 yuan/ton of mark coals calculate, and the rock salt manufacturing enterprise amounts to every year can about save 4000
Wan Yuan.Bittern probably needs more increase 60m pump head, 1 year electricity for newly increasing 400,000 yuan or so by directional-butted well
Take.The operating expenses of a pair of 3500m depth directional-butted wells probably withdraws in 40,000,000 or so, about one years cans and is constructed into
This, the income in later stage is considerable.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (5)
1. a kind of method that rock salt bittern is preheated with directional-butted well, comprises the following steps：
S1, it is being easy to the drilling well position of construction at salt manufacturing workshop selection two, this need to expire the distance between drilling well position at two
The construction requirement of sufficient directional-butted well；
S2, wherein a drilling well opening position construction straight well（1）, the straight well（1）Drilling depth be 2500m ~ 5000m, directly
Well（1）The formation temperature of bottom is 75 DEG C ~ 140 DEG C, to straight well（1）Middle setting of casing Cheng Jing；
S3, another drilling well opening position construct directional well（2）, by the directional well（2）With straight well（1）Bottom be connected,
Directional well（2）Lower end be provided with inclination section（21）, to directional well（2）Middle setting of casing to and straight well（1）The target spot being docked and connected（3）
Place is into well；
S5, by directional well（2）Upper end and the first halogen transportation main pipeline（4）It is connected, by straight well（1）Upper end and the second halogen transportation master
Pipeline（5）It is connected, the first halogen transportation main pipeline（4）, directional well（2）, straight well（1）With the second halogen transportation main pipeline（5）Collectively form
One closed halogen transportation passage, salt manufacturing workshop is delivered to after the rock salt bittern that exploitation obtains is preheated by the halogen transportation passage
Further processing.
2. according to the method for claim 1, it is characterised in that：In the step S3, the inclination section（21）Circular arc half
Footpath is 300m ~ 600m.
3. according to the method for claim 1, it is characterised in that：The second halogen transportation main pipeline（5）The other end and salt manufacturing
Workshop is connected, and bittern is successively via the first halogen transportation main pipeline（4）, directional well（2）, straight well（1）With the second halogen transportation main pipeline（5）
It is delivered to salt manufacturing workshop.
4. according to the method for claim 1, it is characterised in that：Also include between the step S3 and step S5 to described
Straight well（1）And directional well（2）Carry out well-flushing step S4, the step S4 be specially：By well-flushing medium by pumping-in equipment from straight
Well（1）Or directional well（2）Injection, by straight well（1）And directional well（2）Interior polluter is carried to ground.
5. the method according to any one of claim 1 ~ 4, it is characterised in that：In the step S1, drilling well position at two
The distance between be 600m ~ 1000m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710858724.3A CN107388611A (en) | 2017-09-21 | 2017-09-21 | A kind of method that rock salt bittern is preheated with directional-butted well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710858724.3A CN107388611A (en) | 2017-09-21 | 2017-09-21 | A kind of method that rock salt bittern is preheated with directional-butted well |
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| CN107388611A true CN107388611A (en) | 2017-11-24 |
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| CN201710858724.3A Pending CN107388611A (en) | 2017-09-21 | 2017-09-21 | A kind of method that rock salt bittern is preheated with directional-butted well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016991A (en) * | 2021-09-16 | 2022-02-08 | 西安交通大学 | Method for determining well body structure of butt joint well based on geothermal field distribution characteristics |
| CN114922576A (en) * | 2022-05-23 | 2022-08-19 | 国投新疆罗布泊钾盐有限责任公司 | Sectional type well washing process for horizontal well |
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| 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 |
| US6301894B1 (en) * | 2000-05-12 | 2001-10-16 | Albert H. Halff | Geothermal power generator |
| CN1415841A (en) * | 2002-12-01 | 2003-05-07 | 化学工业部连云港设计研究院 | Drilling method for exploiting soluble salt mine through dissolution method |
| CN103644673A (en) * | 2013-12-11 | 2014-03-19 | 中盐勘察设计院有限公司 | Exploitation method for geothermal energy in salt mineral deposit |
| CN106196233A (en) * | 2016-07-15 | 2016-12-07 | 西安交通大学 | A kind of medium and deep geothermal energy heating system |
-
2017
- 2017-09-21 CN CN201710858724.3A patent/CN107388611A/en active Pending
Patent Citations (5)
| 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 |
| US6301894B1 (en) * | 2000-05-12 | 2001-10-16 | Albert H. Halff | Geothermal power generator |
| CN1415841A (en) * | 2002-12-01 | 2003-05-07 | 化学工业部连云港设计研究院 | Drilling method for exploiting soluble salt mine through dissolution method |
| CN103644673A (en) * | 2013-12-11 | 2014-03-19 | 中盐勘察设计院有限公司 | Exploitation method for geothermal energy in salt mineral deposit |
| CN106196233A (en) * | 2016-07-15 | 2016-12-07 | 西安交通大学 | A kind of medium and deep geothermal energy heating system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114016991A (en) * | 2021-09-16 | 2022-02-08 | 西安交通大学 | Method for determining well body structure of butt joint well based on geothermal field distribution characteristics |
| CN114016991B (en) * | 2021-09-16 | 2022-10-21 | 西安交通大学 | Method for determining well body structure of butt joint well based on geothermal field distribution characteristics |
| CN114922576A (en) * | 2022-05-23 | 2022-08-19 | 国投新疆罗布泊钾盐有限责任公司 | Sectional type well washing process for horizontal well |
| CN114922576B (en) * | 2022-05-23 | 2023-10-20 | 国投新疆罗布泊钾盐有限责任公司 | Sectional well flushing process for horizontal well |
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