CN106194124B - Geothermal well based on Bedrock Geology - Google Patents
Geothermal well based on Bedrock Geology Download PDFInfo
- Publication number
- CN106194124B CN106194124B CN201610773120.4A CN201610773120A CN106194124B CN 106194124 B CN106194124 B CN 106194124B CN 201610773120 A CN201610773120 A CN 201610773120A CN 106194124 B CN106194124 B CN 106194124B
- Authority
- CN
- China
- Prior art keywords
- well
- filter
- pipe
- water
- excrescence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 239000011083 cement mortar Substances 0.000 claims abstract description 4
- 238000001914 filtration Methods 0.000 claims description 67
- 238000000576 coating method Methods 0.000 claims description 23
- 239000011248 coating agent Substances 0.000 claims description 21
- 238000005192 partition Methods 0.000 claims description 19
- 230000002787 reinforcement Effects 0.000 claims description 19
- 229910001220 stainless steel Inorganic materials 0.000 claims description 17
- 239000010935 stainless steel Substances 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 238000005260 corrosion Methods 0.000 claims description 15
- 230000007797 corrosion Effects 0.000 claims description 14
- 239000004814 polyurethane Substances 0.000 claims description 11
- 229920002635 polyurethane Polymers 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 230000002401 inhibitory effect Effects 0.000 claims description 5
- 238000005187 foaming Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 16
- 238000009413 insulation Methods 0.000 description 10
- 238000010276 construction Methods 0.000 description 9
- 239000004576 sand Substances 0.000 description 9
- 239000004677 Nylon Substances 0.000 description 8
- 229920001778 nylon Polymers 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 235000013339 cereals Nutrition 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 102000002322 Egg Proteins Human genes 0.000 description 1
- 108010000912 Egg Proteins Proteins 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 239000005331 crown glasses (windows) Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 210000004681 ovum Anatomy 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000004634 thermosetting polymer Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/003—Insulating arrangements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/38—Arrangements for separating materials produced by the well in the well
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sewage (AREA)
Abstract
The present invention provides a kind of geothermal wells based on Bedrock Geology, including the well cementation section and filter well section arranged from top to bottom, and the well cementation section includes 9 meters of long wall casings, and cement mortar recharge is used between the wall casing and well bore；The filter well section includes 11 meters of long water-permeable pipes, filter is equipped between the water-permeable pipe and well bore, and cobblestone is filled between water-permeable pipe and well bore；Filter well section bottom is provided with 40 meters long of production well section, the diameter of the production well section is less than the diameter of the well cementation section and filter well section.In the present invention, underground water in boulder bed and bedrock fracture layer can be introduced into geothermal well by geothermal well simultaneously, so that having abundant water resources in geothermal well, subsequently to provide sound assurance to the utilization of underground heat, and filter can obstruct the silt of underground water in boulder bed between water-permeable pipe and well bore, it prevents silt from entering in geothermal well, improves the quality at water source in geothermal well.
Description
Technical field
The present invention relates to geothermal well technical fields, and in particular to a kind of geothermal well based on Bedrock Geology.
Background technology
Underground heat is a kind of energy resource generated from earth interior nuclear fusion, and geothermal energy is a kind of clean energy resource and can be again
The raw energy, is widely used, development prospect is very wide in terms of heating and refrigerating.
It is the committed step utilized to geothermal energy resources to build geothermal well, for different geology, the casing programme of geothermal well
It is not quite similar.For Bedrock Geology, including the abundant bedrock fracture layer of water content and the compact structure that is positioned above
Horizon d, and can include generally mainly farinose argillic horizon, boulder bed there are certain thickness unconsolidated formation in the top of horizon d
With argillaceous siltstoue etc..Wherein, mainly there are boulder bed and bedrock fracture layer in water-bearing layer, the underground water impurity wherein in boulder bed compared with
It is more, and the sediment charge of the underground water of bedrock fracture layer is then less, the existing geothermal well based on Bedrock Geology generally only with
The underground water of bedrock fracture layer reduces filtration step, but also results in the waste of the energy simultaneously, and for bedrock fracture layer
The case where water content less geology, the case where also resulting in insufficient water sources in geothermal well, occur.
And if the water of boulder bed and Bedrock Crevice Water to be introduced into geothermal well simultaneously, it is necessary to the ground of boulder bed
Lower water is filtered processing, the filter of existing geothermal well in order to keep underground water water outlet smooth, generally filter opening is arranged it is bigger than normal,
Which results in part path silts can smoothly enter into geothermal well, extracts the water containing silt out when immersible pump and utilizes, and holds
The damage for easily causing equipment, influences system operation, causes heavy losses；Moreover, increasing as silt enters the quantity in geothermal well
It is more, it also results in hoistway and silts up, influence the normal use of geothermal well.
Invention content
For the defects in the prior art, the present invention provides a kind of geothermal well based on Bedrock Geology, to ensure geothermal well
It inside has abundant water resources, and improves the quality at water source in geothermal well, while keeping the temperature at water source in geothermal well.
A kind of geothermal well based on Bedrock Geology provided by the invention, including the well cementation section and filter that arrange from top to bottom
Well section, the well cementation section includes 9 meters of long wall casings, and cement mortar recharge is used between the wall casing and well bore；The filtering
Device well section includes 11 meters of long water-permeable pipes, filter is equipped between the water-permeable pipe and well bore, and between water-permeable pipe and well bore
Fill cobblestone；Filter well section bottom is provided with 40 meters long of production well section, the diameter of the production well section is less than institute
State the diameter of well cementation section and filter well section.
In the present invention, geothermal well is followed successively by well cementation section, filter well section and production well section from top to bottom, and geothermal well is built
The geologic structure of position be divided into from top to bottom 7 meters of farinose argillic horizon, 13 meters of boulder bed, 4 meters of argillaceous siltstoue layer,
5 meters of horizon d and 31 meters of bedrock fracture layer, it is loosely organized due to farinose argillic horizon, and also water content is few, therefore in order to
Ensure the stability of casing programme, and prevent cold water from entering in geothermal well, well cementation section depth is set to 9 meters, and use 9 meters
The mode of long wall casing and recharge cement mortar is reinforced；Since the water content of boulder bed is abundant, it is arranged in boulder bed
The filter well section that depth is 11 meters is reinforced, the filter being arranged between water-permeable pipe and well bore using 11 meters long of water-permeable pipes
Silt in underground water can be obstructed between water-permeable pipe and well bore, prevent silt from entering in geothermal well, improve geothermal well
The quality at middle water source, and cobblestone is filled between water-permeable pipe and well bore, to be further ensured that the stability of filter well section, together
When due to filler it is identical as the main component of geology residing for filter well section, do not interfere with the circulation of underground water；Due to basement rock
The water content of crack layer is abundant, therefore 40 meters long of production well section is arranged in filter well section bottom, will be in bedrock fracture layer
Underground water be introduced into geothermal well, since the structure of argillaceous siltstoue layer, horizon d and bedrock fracture layer three is all more steady
It is fixed, and sediment charge is few, therefore produce well section and be designed as open hole, the cost of construction can be reduced while underground heat can also be shortened
The construction period of well improves construction efficiency.As it can be seen that the geothermal well provided by the invention based on Bedrock Geology, it can be simultaneously by ovum
Underground water in rock layers and bedrock fracture layer is introduced into geothermal well, may make having abundant water resources in geothermal well, is follow-up underground heat
Utilization provide sound assurance.
Preferably, the wall casing includes outer wall casing and interior wall casing, and the interior wall casing passes through fixing bracket and institute
Outer wall casing connection is stated, insulating layer is provided between the outer wall casing and interior wall casing.Since well cementation section is in the upper of well bore
Side, the temperature on the stratum is relatively low, and the water source in geothermal well, which touches wall casing, will lead to heat loss, therefore, in well cementation section
Place's setting insulating layer can effectively prevent the loss of water source heat in geothermal well.
Preferably, the insulating layer is polyurethane foaming layer.Using foaming technique between outer wall casing and interior wall casing shape
At polyurethane insulation coating there is good heat insulation effect, disclosure satisfy that prolonged heat preservation demand, and polyurethane material has
There are good wearability, resistance to ag(e)ing and adhesiveness, can be adapted for the use environment of geothermal well.
Preferably, the inner surface of the outer wall casing is provided with infrared-reflecting coated.Outer borehole wall pipe internal surface setting
Infrared reflection coating can reflect the infrared ray of polyurethane insulation coating, reduce the diffusion of polyurethane insulation coating heat, carry
High heat insulation effect.
Preferably, the outer surface of the interior wall casing is provided with solar energy heat absorbing coating.Since interior wall casing is in direct contact
Water source in geothermal well causes its outer surface to have higher temperature, and solar energy heat absorbing coating can preferably absorb infrared ray, from
And a heat build-up layer is formed in the outer surface of interior wall casing, the heat for reducing interior wall casing overflows, and further improves heat preservation effect
Fruit.
Preferably, the interior wall casing and outer wall casing are stainless steel.Using the interior wall casing of stainless steel
The intensity that casing programme can be improved with outer wall casing, prevents well bore from caving in, and stainless steel is with preferable corrosion-resistant
Property, it can be adapted for water source environment complicated in geothermal well, extend the service life of geothermal well.
Preferably, the inner surface of the interior wall casing is provided with corrosion-inhibiting coating.Since the environment of underground generally all compares evil
Bad, the corrosivity at the water source in geothermal well is stronger, and corrosion-inhibiting coating is arranged in the inner surface of interior wall casing, can be protected to it
Shield, extends its service life.
Preferably, the filter includes first level filtering device and two-stage filter, the two-stage filter setting
In in the first level filtering device；The first level filtering device includes base pipe, protection block reinforcement and packet net, and the base pipe is circle
It manages, permeable hole has been evenly arranged on the basis tube wall, the protection block reinforcement is vertically welded in basic pipe outer wall, protection gear
Muscle is equally spaced, and the packet net is wrapped in protection block reinforcement and basic pipe outer wall, and the range that packet net vertically wraps up is more than protection
The range of block reinforcement, packet net external application iron wire are fastened in protection block reinforcement and basic pipe outer wall；The two-stage filter includes
Inner tube, outer tube, partition board and filter core, said inner tube and outer tube are pipe, and inner and outer tubes are coaxially disposed, on outer tube wall uniformly
Be disposed with permeable hole, outer tube top is provided with hanging ring, and described partition board one end is fixedly connected with outer wall of inner tube, the partition board other end with it is outer
Inside pipe wall is fixedly connected, and partition board will be divided into multiple chambers between inner tube and outer tube, and the filter core is filled in the cavity, chamber
Room upper and lower side is opening, for the water after filter element filtering to be discharged；The outer tube top is provided with the outer of outwardly projecting annular
Pipe excrescence, the base pipe is provided on the base pipe of inwardly projecting annular excrescence under excrescence and base pipe, described
Outer tube is passed down through excrescence inner circle on the base pipe, and outer tube excrescence is pressed on base pipe on excrescence, outer pipe bottom pressure
Under the base pipe on excrescence, rubber cushion, the base pipe are lined on the base pipe between excrescence and outer tube excrescence
It is lower that rubber cushion is lined between excrescence and outer pipe bottom.
Filter in the present invention includes first level filtering device and two-stage filter.Wherein first level filtering device is to silt
Coarse filtration is carried out, is mainly used for filtering out the sand of bulky grain, permeable hole has been evenly arranged on basic tube wall, packet net is wrapped in pipe
Outside, underground water will enter in geothermal well, first have to two layers of filtering of permeable hole by packet net and base pipe, filter out bulky grain
Sand.Two-stage filter carries out refined filtration to silt, is mainly used for filtering out tiny silt, two-stage filter includes interior
Pipe, outer tube, partition board and filter core, inner tube is coaxially arranged with outside, and partition board is the connecting framework of inner tube and outer tube, at the same by inner tube with
Space between outer tube is divided into multiple cavities, fills filter core in cavity, design in this way, makes the entire two-stage filter be
One entirety, sound construction；Two-stage filter is mainly by two layers of the filter core being located in the permeable hole and chamber on outer tube wall
Permeable hole is not arranged for filtering, inner pipe wall, and chamber upper and lower end is opening, after underground water enters chamber, is flowed above and below along chamber,
It is discharged from chamber upper and lower end, design in this way extends flow path of the underground water in filter core, improves filtering effect
Fruit.First level filtering device filter opening is larger, is not easy to plug, and can filter out bulky grain sand, and two-stage filter filter opening is small, is easy stifled
Plug, can filter out tiny silt, by the way of this classified filtering, can more thoroughly filter out sand and reduce
The probability that filter blocks.Outer tube is passed down through excrescence inner circle on base pipe, and outer tube excrescence is pressed on base pipe on excrescence,
Outer pipe bottom is pressed under base pipe on excrescence, and two-stage filter and first level filtering device is made to be combined together, and they
Between be lined with rubber cushion, rubber cushion is compacted by the dead weight of two-stage filter, sealing effect is good, and silt will not be flowed out from gap.
Two-stage filter is integral design, can be detached easily with excrescence under excrescence on base pipe and base pipe, can be by setting
Set the hanging ring at outer tube top end two-stage filter integrally hung out into geothermal well and cleaned, repaired or replaced, clean, repair or
Two-stage filter is hung in geothermal well again after replacement, is used in combination with first level filtering device, thus can be extended
The service life of filter further improves the quality at water source in geothermal well.
Preferably, the filter core is stainless steel filter core, is provided on the outer wall and partition board of said inner tube outwardly projecting solid
Determine part, the fixing piece is for fixing the stainless steel filter core；The cross-sectional area of each chamber is equal.Stainless steel filter core has
There is a good strainability, filtered underground water can meet system requirement, corrosion resistance, heat resistance, resistance to pressure, wear-resisting
Property is good, can meet severe underground environment, and core stomata is uniform, accurate filtering accuracy, and the flow of unit area is big, can improve
The efficiency of refined filtration improves filter efficiency, can be reused after cleaning, free of replacement, economizes on resources, reduces cost；Through coarse filtration
Underground water afterwards flows above and below after the permeable hole of outer tube enters chamber, along chamber, is discharged through chamber opening, and filter core is easy hair
Raw displacement, conglomeration, fixing piece play fixed function to stainless steel filter core, and when filtering, the flowing of water will not be such that filter core is subjected to displacement, filter
Core will not conglomeration improve filter effect to ensure that the normal work of filter core；And the cross-sectional area of each chamber is equal, into
The water for going out chamber is uniform, can further promote the effect and efficiency of filtering.
Preferably, the permeable hole of the base pipe is strip-shaped hole, and the strip-shaped hole of the upper and lower adjacent two rows mutually staggers.
Using strip-shaped hole, coarse filtration requirement can be met, upper and lower adjacent two rows mutually stagger, and so that permeable hole is more evenly distributed, filtering enters base
The underground water of plinth pipe also evenly, can further promote the effect and efficiency of filtering.
Preferably, in order to optimize structure, the protection block reinforcement uses antirust round steel, a diameter of 4mm of round steel, between round steel
Away from for 20mm.
Preferably, the packet net is nylon yarn packet net.Nylon yarn packet net can filter out the sand of bulky grain, reach coarse filtration
It is required that.
Preferably, the iron wire uses galvanized wire, and it is 10mm that iron wire, which winds spacing,.Using galvanized wire, prevent from winding
Iron wire be broken because being corroded, cause packet net to fall off, while in order to optimize structure, it is 10mm that iron wire, which winds spacing,.
Preferably, the permeable hole of the outer tube is round hole, and left and right two row of round hole mutually stagger.Using circle
Hole can meet the requirement of refined filtration, and left and right adjacent two row mutually stagger, and so that permeable hole is more evenly distributed, into the underground water of chamber
Also evenly, the effect and efficiency of filtering are promoted.
Preferably, the discharge area of the permeable hole of the base pipe is more than the discharge area of the permeable hole of the outer tube.Base
The discharge area of the permeable hole of plinth pipe is more than the discharge area of the permeable hole of outer tube, can guarantee that coarse filtration provides enough water for refined filtration
Amount promotes filter efficiency.
Preferably, the surface of the base pipe surfaces externally and internally, the surfaces externally and internally of inner tube, the surfaces externally and internally of outer tube and permeable hole
It is coated with corrosion-resistant coating.The environment of underground is generally all relatively more severe, and corrosivity is stronger, in base pipe surfaces externally and internally, inner tube
These parts being in direct contact with underground water or soil of the surface of outer surface, the surfaces externally and internally of outer tube and permeable hole apply one layer of anti-corrosion
Layer is lost, the corrosion of filter component can be reduced, prolonged the service life.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar element
Or part is generally identified by similar reference numeral.In attached drawing, each element or part might not be drawn according to actual ratio.
Fig. 1 is the structural schematic diagram of the geothermal well of the present invention based on Bedrock Geology；
Fig. 2 is the structural schematic diagram of the wall casing of the geothermal well of the present invention based on Bedrock Geology；
Fig. 3 is the schematic cross-sectional view of the filter of the geothermal well of the present invention based on Bedrock Geology；
Fig. 4 is the A-A sectional views of Fig. 3；
Fig. 5 is the B-B sectional views of Fig. 3；
Fig. 6 is the C-C sectional views of Fig. 3；
Fig. 7 is that the base pipe of the filter of the geothermal well of the present invention based on Bedrock Geology is combined with two-stage filter
Structural schematic diagram；
Fig. 8 is the structural representation of the two-stage filter of the filter of the geothermal well of the present invention based on Bedrock Geology
Figure.
Reference numeral：
1- wall casings；2- water-permeable pipes；3- filters；
The outer wall casings of 11-；Wall casing in 12-；13- fixing brackets；14- polyurethane insulation coatings；15- infrared reflections apply
Layer；16- solar energy heat absorbing coatings；31- base pipes；32- protects block reinforcement；33- packet nets；34- iron wires；35- outer tubes；36- inner tubes；
37- chambers；38- partition boards；39- permeable holes；
Excrescence on 311- base pipes；Excrescence under 312- base pipes；351- outer tube excrescences；352- hanging rings；361- is solid
Determine part.
Specific implementation mode
The embodiment of technical solution of the present invention is described in detail below in conjunction with attached drawing.Following embodiment is only used for
Clearly illustrate technical scheme of the present invention, therefore be only used as example, and the protection model of the present invention cannot be limited with this
It encloses.
As shown in Figure 1, the main component of the geologic structure of geothermal well construction position is followed successively by 7 from top to bottom in the present embodiment
Farinose argillic horizon, 13 meters of boulder bed, 4 meters of argillaceous siltstoue layer, 5 meters of horizon d and 31 meters of the bedrock fracture layer of rice,
Wherein, farinose argillic horizon is loosely organized, and water content is few, and the structure of boulder bed is also loose, but aqueous abundant, argillaceous siltstoue
Structure relative close, stability is preferable, and opposite water proof, the compact structure of horizon d and bedrock fracture layer, stability is good, basement rock
Crack layer contains abundant underground water, and the underground water sediment charge of this layer is few；Therefore, in order to ensure the stabilization of casing programme
Property, the geothermal well provided in an embodiment of the present invention based on Bedrock Geology is followed successively by well cementation section, filter well section and life from top to bottom
Well section is produced, wherein well cementation section is 9 meters, correspondingly uses 9 meters long of wall casing 1 to reinforce, water is used between wall casing 1 and well bore
Mud recharge, to improve the stability of geothermal well；Filter well section is 11 meters, and 11 meters long of water-permeable pipe 2 is correspondingly used to reinforce,
It is equipped with filter 3 between water-permeable pipe 2 and well bore, and cobblestone is filled between water-permeable pipe 2 and well bore, further consolidates well bore
The stability of structure, the underground water in boulder bed are flowed into from the hole on water-permeable pipe 2 in geothermal well via filter 3, are filtered
Quality of groundwater afterwards is improved, and the content of silt is greatly decreased in water, can meet subsequently to the water source in geothermal well
Utilize demand；It is 40 meters to produce well section, the underground water in bedrock fracture layer is introduced into geothermal well, due to argillaceous siltstoue
Layer, the structure of horizon d and bedrock fracture layer three are all relatively stable, and sediment charge is few, thus produce well section be designed as it is naked
Well can reduce the cost of construction while can also shorten the construction period of geothermal well, improve construction efficiency.As it can be seen that this implementation
Underground water in boulder bed and bedrock fracture layer can be introduced into underground heat by the geothermal well based on Bedrock Geology that example provides simultaneously
In well, having abundant water resources in geothermal well may make, the utilization for follow-up underground heat provides sound assurance.
As shown in Fig. 2, the wall casing 1 includes outer wall casing 11 and interior wall casing 12, which passes through fixation
Holder 13 is connect with outer wall casing 11, and the polyurethane heat-insulation that foaming is formed is provided between outer wall casing 11 and interior wall casing 12
Layer 14, since well cementation section is in the top of well bore, the temperature on the stratum is relatively low, and the water source in geothermal well touches interior wall casing 12
It will lead to heat loss, therefore, setting insulating layer can effectively prevent the loss of water source heat in geothermal well at well cementation section；Institute
The inner surface for stating outer wall casing 11 is equipped with infrared-reflecting coated 15, this infrared-reflecting coated 15 is with thermoset resin material
For film formation at low temp substance, using low melting point and the special crown glass binder of low-expansion coefficient as high temperature bonding material, through special work
Skill processing is prepared a kind of having infrared external reflection function, the strong and nontoxic and pollution-free organo-mineral complexing of high temperature resistant, caking property
Coating can reflect the infrared ray of polyurethane insulation coating 14, reduce the diffusion of 14 heat of polyurethane insulation coating, improve and protect
Temp effect；Since interior wall casing 12 is in direct contact the water source in geothermal well, its outer surface is caused to have higher temperature, therefore in institute
The outer surface for stating interior wall casing 12 is equipped with solar energy heat absorbing coating 16, can preferably absorb infrared ray, in interior wall casing
12 outer surface forms a heat build-up layer, and the heat for reducing interior wall casing 12 overflows, and further improves heat insulation effect, the sun
Energy heat absorbing coating 16 is the anodized coating of steel, has the characteristics that humidity, the use environment being suitable in geothermal well.
Above-mentioned outer wall casing 11 and interior wall casing 12 are stainless steel, can improve the intensity of casing programme, prevent
Well bore caves in, and stainless steel has preferable corrosion resistance, can be adapted for water source environment complicated in geothermal well, prolongs
The service life of long geothermal well
Further, since the environment of underground is generally all relatively more severe, the corrosivity at the water source in geothermal well is stronger, therefore upper
The inner surface for stating interior wall casing 12 is provided with corrosion-inhibiting coating, further to be protected to it, extends its service life.This implementation
The corrosion-inhibiting coating that example uses is using polyurethane modified epoxy resin as substrate, with mica iron oxide red for main color stuffing, to not
Rust steel surface has stronger adhesive force, can for a long time work and not fall off under the environment of geothermal well humidity.
As shown in fig. 3 to 7, the filter includes first level filtering device and two-stage filter, two-stage filter setting
In in first level filtering device；First level filtering device includes circular base pipe 31, protection block reinforcement 32 and packet net 33, and base pipe 31 is managed
Permeable hole 39 is evenly arranged on wall, permeable hole 39 is strip-shaped hole, and upper and lower adjacent two rows mutually stagger, and protection block reinforcement 32 uses
The antirust round steel of a diameter of 4mm is vertically welded on 31 outer wall of base pipe, its spacing 20mm, and packet net 33 is nylon yarn packet net
33, it is wrapped on protection block reinforcement 32 and 31 outer wall of base pipe, the range that packet net 33 vertically wraps up is more than the range of protection block reinforcement 32,
33 external application galvanized wire 34 of packet net is fastened with 10mm spacing in protection block reinforcement 32 and 31 outer wall of base pipe；Secondary filtration fills
It sets including inner tube 36, outer tube 35, partition board 38 and filter core, inner tube 36 and outer tube 35 are pipe, and inner tube 36 and outer tube 35 are coaxially set
It sets, permeable hole 39 has been evenly arranged on 35 tube wall of outer tube, permeable hole 39 is round hole, and left and right two row mutually stagger, base pipe
The discharge area of permeable hole 39 is more than the discharge area of the permeable hole 39 of outer tube, the setting of 35 top of outer tube there are four hanging ring 352, every
38 one end of plate is fixedly connected with 36 outer wall of inner tube, and 38 other end of partition board is fixedly connected with 35 inner wall of outer tube, and partition board 38 is by inner tube 36
The equal chamber 37 of multiple cross-sectional areas is divided between outer tube 35, filter core uses stainless steel filter core, is filled in chamber 37,
37 upper and lower side of chamber is opening, for the water after filter element filtering to be discharged, is provided on the outer wall and partition board 38 of inner tube 36 outward
Fixing piece 361 outstanding, fixing piece 361 for fixing stainless steel filter core, 31 surfaces externally and internally of base pipe, inner tube 36 interior appearance
The surface in face, the surfaces externally and internally of outer tube 35 and permeable hole 39 is coated with corrosion-resistant coating；35 top of outer tube is provided with outwardly projecting
Annular outer tube excrescence 351, base pipe 31 are provided on inwardly projecting ring foundation pipe and are protruded under excrescence 311 and base pipe
Body 312, outer tube 35 are passed down through 311 inner circle of excrescence on base pipe, and outer tube excrescence 351 is pressed in excrescence 311 on base pipe
On, 35 bottom of outer tube is pressed under base pipe on excrescence 312, is lined between excrescence 311 and outer tube excrescence 351 on base pipe
Rubber cushion is lined with rubber cushion under base pipe between 35 bottom of excrescence 312 and outer tube.
Wherein first level filtering device carries out coarse filtration to silt, is mainly used for filtering out the sand of bulky grain；Base pipe 31 is managed
Bar shaped permeable hole 39 has been evenly arranged on wall, upper and lower adjacent two rows mutually stagger, and permeable hole 39 is made to be more evenly distributed, filter into
Enter the underground water of base pipe 31 also evenly, nylon yarn packet net 33 is wrapped in outside pipe by protecting 32 pad of block reinforcement, uses galvanized iron
Silk 34 is fixed, and underground water will enter in geothermal well, first have to two layers of mistake of permeable hole 39 by nylon yarn packet net 33 and base pipe
Filter, filters out the sand of bulky grain.Two-stage filter carries out refined filtration to silt, is mainly used for filtering out tiny silt, and two
Grade filter device includes inner tube 36, outer tube 35, partition board 38 and filter core, and inner tube 36 and outer tube 35 are coaxially arranged, and partition board 38 is inner tube
36 with the connecting framework of outer tube 35, while the space between inner tube 36 and outer tube 35 is divided into the equal chamber of multiple cross-sectional areas
37, segmentation filtering in this way, 37 water of each chamber is uniform, can promote the effect and efficiency of filtering, be filled not in chamber 37
Become rusty steel filter core, design in this way, and it is an entirety, sound construction to make entire two-stage filter；Meanwhile stainless steel filter core
With good strainability, filtered underground water can meet system requirement, corrosion resistance, heat resistance, resistance to pressure, resistance to
Mill property is good, can meet severe underground environment, and core stomata is uniform, accurate filtering accuracy, and the flow of unit area is big, can carry
The efficiency of high refined filtration meets system water demand, can be reused after cleaning, free of replacement, economizes on resources, reduces cost；
Two-stage filter is mainly by two layers of filtering of filter core in the permeable hole 39 and chamber 37 being located on 35 tube wall of outer tube, permeable hole 39
Upper and lower adjacent two row mutually stagger, and permeable hole 39 is made to be more evenly distributed, into chamber 37 underground water also evenly；Base pipe
Permeable hole 39 discharge area be more than outer tube permeable hole 39 discharge area, can guarantee that coarse filtration provides enough water for refined filtration
Amount promotes filter efficiency；Permeable hole 39 is not arranged for inner tube 36, and 37 upper and lower end of chamber is open, after underground water enters chamber 37, to
37 both ends of chamber are flowed, and are discharged from 37 upper and lower end of chamber, and design in this way extends flowing of the underground water in filter core
Path improves filter effect, and since in filter process, filter core is easy to happen displacement, conglomeration, fixing piece 361 filters stainless steel
Core plays fixed function, and when filtering, the flowing of water will not be such that filter core is subjected to displacement, filter core will not conglomeration, to ensure that filter core
Normal work, improves filter effect；The environment of underground is generally all relatively more severe, and corrosivity is stronger, the appearance in base pipe 31
Face, the surfaces externally and internally of inner tube 36, the surfaces externally and internally of outer tube 35 and permeable hole 39 surface these directly connect with underground water or soil
Tactile part applies one layer of corrosion-resistant coating, can reduce the corrosion of filter component, prolong the service life.
First level filtering device filter opening is larger, is not easy to plug, and can filter out bulky grain sand, and two-stage filter filter opening is small,
Be easy block, tiny silt can be filtered out, by the way of this classified filtering, can more thoroughly filter out sand and
Reduce the probability of plugged filter.
Outer tube 35 is passed down through 311 inner circle of excrescence on base pipe, and outer tube excrescence 351 is pressed in excrescence on base pipe
On 311,35 bottom of outer tube is pressed under base pipe on excrescence 312, by this dismountable mode by two-stage filter and
First level filtering device is combined together, and in combination with rubber cushion is lined between position, is compacted by the dead weight of two-stage filter
Rubber cushion, sealing effect is good, and silt will not be flowed out from gap；Two-stage filter and first level filtering device detachably detach, can be with
Two-stage filter is integrally lifted cleaning, repair or replacement, cleaning, repair by the hanging ring 352 being arranged by 35 top of outer tube
Or again hang in two-stage filter in geothermal well after replacing, it is used in combination with first level filtering device, to improve
The quality at water source in geothermal well.
Filter described in the present embodiment draw water it is different with the method for operation in recharge, it is specific as follows：
When drawing water, first level filtering device and two-stage filter collective effect are needed, secondary protection device is hung in into underground heat
In well, outer tube 5 is passed down through 311 inner circle of excrescence on base pipe, and outer tube excrescence 351 is pressed on base pipe on excrescence 311,
It is fitted together with first level filtering device, the underground water containing silt flows through nylon yarn packet net 33, through the bar shaped on base pipe 31
Permeable hole 39 enters in geothermal well, completes the level-one of silt by the filtering of nylon yarn packet net 33 and bar shaped permeable hole 39 outside well
Filtering；Underground water after coarse filtration enters chamber 37 through the round permeable hole on outer tube 35, the refined filtration through stainless steel filter core, from
The upper and lower open discharge of chamber 37, completes the secondary filtration of silt, to obtain the underground water source for meeting production requirement.
Recharge is that the water source after utilization is gone back to underground through underground heat well irrigation to need two level to reduce the resistance of recharge
Filter device is integrally hung out outside well, and recharge water is flowed out through the bar shaped permeable hole 39 on base pipe 31, then penetrates nylon yarn packet net
33 flow back into underground, with draw water filtering when flow direction on the contrary, play the role of cleaning to first level filtering device, prevent filter opening stifled
Plug, meanwhile, after two-stage filter is hung out, it can be cleaned, repaired or be maintained.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
To modify to the technical solution recorded in previous embodiment, either which part or all technical features are equal
It replaces；And these modifications or replacements, the model for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses, should all cover in the claim of the present invention and the range of specification.
Claims (7)
1. a kind of geothermal well based on Bedrock Geology, including the well cementation section and filter well section, feature that arrange from top to bottom exist
In：
The well cementation section includes 9 meters of long wall casings, and cement mortar recharge is used between the wall casing and well bore；
The filter well section includes 11 meters of long water-permeable pipes, filter is equipped between the water-permeable pipe and well bore, and permeable
Cobblestone is filled between pipe and well bore；
Filter well section bottom is provided with 40 meters long of production well section, the diameter of the production well section is less than the well cementation section
With the diameter of filter well section；
The filter includes first level filtering device and two-stage filter, and the two-stage filter is set to the level-one mistake
It filters in device；
The first level filtering device includes base pipe, protection block reinforcement and packet net, and the base pipe is pipe, the basis tube wall
On be evenly arranged permeable hole, the protection block reinforcement is vertically welded in basic pipe outer wall, protection block reinforcement be equally spaced, it is described
Packet net is wrapped in protection block reinforcement and basic pipe outer wall, and the range that packet net vertically wraps up is more than the range of protection block reinforcement, and packet net is outer
It is fastened in protection block reinforcement and basic pipe outer wall with iron wire；
The two-stage filter includes inner tube, outer tube, partition board and filter core, and said inner tube and outer tube are pipe, inner tube and outer
Pipe is coaxially disposed, and has been evenly arranged permeable hole on outer tube wall, and outer tube top is provided with hanging ring, described partition board one end with outside inner tube
Wall is fixedly connected, and the partition board other end is fixedly connected with outer tube wall, and partition board will be divided into multiple chambers, institute between inner tube and outer tube
State filter core filling in the cavity, chamber upper and lower side is opening, for the water after filter element filtering to be discharged；The outer tube top
It is provided with the outer tube excrescence of outwardly projecting annular, the base pipe is provided with prominent on the base pipe of inwardly projecting annular
Excrescence under body and base pipe, the outer tube are passed down through excrescence inner circle on the base pipe, and outer tube excrescence is pressed in basis
On pipe on excrescence, outer pipe bottom is pressed under the base pipe on excrescence, excrescence and outer tube excrescence on the base pipe
Between be lined with rubber cushion, rubber cushion is lined between excrescence and outer pipe bottom under the base pipe；
The filter core is stainless steel filter core, and outwardly projecting fixing piece is provided on the outer wall and partition board of said inner tube, described solid
Part is determined for fixing the stainless steel filter core；The cross-sectional area of each chamber is equal；
The permeable hole of the base pipe is strip-shaped hole, and the strip-shaped hole of upper and lower adjacent two rows mutually staggers.
2. the geothermal well according to claim 1 based on Bedrock Geology, it is characterised in that：
The wall casing includes outer wall casing and interior wall casing, and the interior wall casing is connected by fixing bracket and the outer wall casing
It connects, insulating layer is provided between the outer wall casing and interior wall casing.
3. the geothermal well according to claim 2 based on Bedrock Geology, it is characterised in that：
The insulating layer is polyurethane foaming layer.
4. the geothermal well according to claim 2 based on Bedrock Geology, it is characterised in that：
The inner surface of the outer wall casing is provided with infrared-reflecting coated.
5. the geothermal well according to claim 4 based on Bedrock Geology, it is characterised in that：
The outer surface of the interior wall casing is provided with solar energy heat absorbing coating.
6. the geothermal well according to claim 2 based on Bedrock Geology, it is characterised in that：
The interior wall casing and outer wall casing are stainless steel.
7. the geothermal well according to claim 6 based on Bedrock Geology, it is characterised in that：
The inner surface of the interior wall casing is provided with corrosion-inhibiting coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610773120.4A CN106194124B (en) | 2016-08-30 | 2016-08-30 | Geothermal well based on Bedrock Geology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610773120.4A CN106194124B (en) | 2016-08-30 | 2016-08-30 | Geothermal well based on Bedrock Geology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106194124A CN106194124A (en) | 2016-12-07 |
| CN106194124B true CN106194124B (en) | 2018-10-19 |
Family
ID=58089292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610773120.4A Expired - Fee Related CN106194124B (en) | 2016-08-30 | 2016-08-30 | Geothermal well based on Bedrock Geology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106194124B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868688A (en) * | 2017-05-08 | 2018-11-23 | 国际壳牌研究有限公司 | Handle method, equipment and the system of drilling well |
| CN107676996A (en) * | 2017-09-29 | 2018-02-09 | 上海中金能源投资有限公司 | Underground heat bore hole heat exchanger and geothermal well well shaft fixing technology |
| CN107477895A (en) * | 2017-09-29 | 2017-12-15 | 上海中金能源投资有限公司 | Mid-deep strata underground heat bore hole heat exchanger |
| CN112649251B (en) * | 2020-12-16 | 2023-04-07 | 苏州普滤得净化股份有限公司 | Layered targeted water taking method for underground water |
| CN112576199B (en) * | 2020-12-21 | 2022-10-11 | 太原理工大学 | Production casing for geothermal wellbore and construction method thereof |
| CN112727404A (en) * | 2021-01-19 | 2021-04-30 | 湖北省地质局武汉水文地质工程地质大队 | Heat-preservation water taking structure of middle-deep geothermal well |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57104051A (en) * | 1980-12-19 | 1982-06-28 | Kanji Suzuki | Collection and returning of geothermal energy |
| CN101349450A (en) * | 2008-06-27 | 2009-01-21 | 赵铭 | Deep layer terrestrial heat renewable energy source winter heating method |
| CN102251760A (en) * | 2011-04-12 | 2011-11-23 | 邯郸市伟业地热开发有限公司 | Loose bed and bedrock layer mixed water-intaking and well-forming process for geothermal well |
| US8353341B1 (en) * | 2010-01-04 | 2013-01-15 | Petrey Iii Paul A | Well system |
| CN103883248A (en) * | 2014-04-08 | 2014-06-25 | 贵州盘江煤层气开发利用有限责任公司 | Geothermal well completion method |
| CN105275406A (en) * | 2014-06-19 | 2016-01-27 | 中国石油化工股份有限公司 | Heat insulation well completion device and method |
| CN205977183U (en) * | 2016-08-30 | 2017-02-22 | 湖南中大经纬地热开发科技有限公司 | Geothermal well based on basement rock geology |
-
2016
- 2016-08-30 CN CN201610773120.4A patent/CN106194124B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57104051A (en) * | 1980-12-19 | 1982-06-28 | Kanji Suzuki | Collection and returning of geothermal energy |
| CN101349450A (en) * | 2008-06-27 | 2009-01-21 | 赵铭 | Deep layer terrestrial heat renewable energy source winter heating method |
| US8353341B1 (en) * | 2010-01-04 | 2013-01-15 | Petrey Iii Paul A | Well system |
| CN102251760A (en) * | 2011-04-12 | 2011-11-23 | 邯郸市伟业地热开发有限公司 | Loose bed and bedrock layer mixed water-intaking and well-forming process for geothermal well |
| CN103883248A (en) * | 2014-04-08 | 2014-06-25 | 贵州盘江煤层气开发利用有限责任公司 | Geothermal well completion method |
| CN105275406A (en) * | 2014-06-19 | 2016-01-27 | 中国石油化工股份有限公司 | Heat insulation well completion device and method |
| CN205977183U (en) * | 2016-08-30 | 2017-02-22 | 湖南中大经纬地热开发科技有限公司 | Geothermal well based on basement rock geology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106194124A (en) | 2016-12-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106194124B (en) | Geothermal well based on Bedrock Geology | |
| CN106401567A (en) | Water level and water temperature automatic monitoring system based on superficial layer geothermal well | |
| CN106246142B (en) | A kind of geothermal well based on complicated ground stratum | |
| CN105804654B (en) | A kind of novel casing programme of geothermal well and completion method | |
| CN108119143B (en) | A kind of vertical shaft working surface cement soluble glass paste combines grouting method with chemical grout double-round curtain | |
| CN106268014B (en) | A kind of geothermal well based on loose rock-soil layer geology | |
| CN106382695B (en) | A kind of air-conditioning system based on screw rod water resource heat pump | |
| CN205839777U (en) | Well-points dewatering well filter structure | |
| CN205977183U (en) | Geothermal well based on basement rock geology | |
| CN102102380A (en) | Layered extraction and recharging system for well with pumping and recharging | |
| CN111395995A (en) | Secondary well completion method for aquifer energy storage well | |
| CN107575159A (en) | Heat-exchange tube mounting process in a kind of geothermal well well | |
| CN107477895A (en) | Mid-deep strata underground heat bore hole heat exchanger | |
| CN104501463B (en) | Water-source heat-pump central air conditioner water supply well inside and outside integrative welding type is with well backflow device | |
| CN205977193U (en) | Geothermal well based on wind and rain playground | |
| CN106437628B (en) | Based on farinose argillic horizon, boulder bed, argillaceous siltstoue multilayer geology geothermal well | |
| CN106194148B (en) | A kind of geothermal well based on wind and rain playground | |
| CN103322832A (en) | Ground source heat pump efficient heat exchanger and construction method thereof | |
| CN205977184U (en) | Geothermal well based on complicated ground stratum | |
| CN206785365U (en) | A kind of resin sand screen | |
| CN106321023B (en) | The geothermal well of diluvial formation is rushed based on the 4th system | |
| CN109505607B (en) | Full-length reinforced freezing pipe for reinforcing grouting by fiber mesh in double-layer cavity and construction method | |
| RU2535873C1 (en) | Method for extraction and use of concentrated geothermal brines | |
| CN106403331B (en) | Heat pump hot-water system based on geothermal well | |
| CN207050254U (en) | A kind of open drilling wall device of mid-deep strata underground heat heat exchange well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181019 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |