CN100545545C - The recycling method of groundwater recharge - Google Patents
The recycling method of groundwater recharge Download PDFInfo
- Publication number
- CN100545545C CN100545545C CNB2008100552340A CN200810055234A CN100545545C CN 100545545 C CN100545545 C CN 100545545C CN B2008100552340 A CNB2008100552340 A CN B2008100552340A CN 200810055234 A CN200810055234 A CN 200810055234A CN 100545545 C CN100545545 C CN 100545545C
- Authority
- CN
- China
- Prior art keywords
- well
- pumped
- inverted
- water
- wellhole
- 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
Images
Classifications
-
- 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
Abstract
The invention belongs to the recycling method and technology of groundwater recharge field, disclose the recycling method of a kind of groundwater recharge specifically.Its major technique is characterized as: according to the hydrogeological situation in locality, determine the degree of depth of pumped well, and bore the inverted well wellhole identical with the degree of depth of pumped well in the precipitation radius of influence of pumped well.Order by sediment tube, filter pipe and wall casing is fixed on well casing in the wellhole, fills filtrate, shut-in well, well-flushing then successively, pumping equipment is installed at last and is recharged equipment.Make and drawing water and recharging in the process, form the loop of a circulation, underground water is lowered the temperature or intensification in underground flow process; And carry out well-flushing behind shut-in well again, duration of well flushing is short and more thorough, and underground water does not contact with the external world, can not pollute underground water after recharging.The recycling method of groundwater recharge of the present invention not only is applicable to the Quaternary system earth formation, is applicable to that also Guantao, Ming Hua town grade in an imperial examination three are earth formation.
Description
Technical field
The invention belongs to underground water cyclic utilization method technical field, relate to the recycling method of a kind of groundwater recharge specifically.
Background technology
Along with the exploitation utilization of the present disposable energy such as coal, oil, natural gas etc., the energy is fewer and feweri, and cost of winning is also more and more higher, and people turn one's attention to the exploitation of the energy of reusable edible gradually.The difference of coolant-temperature gage and surface temperature under the base area, utilize summer underground water temperature to be lower than face of land air themperature, winter underground water temperature and to show air themperature and the high characteristics of deep phreatic water water temperature above Ground, people have invented the underground water air-conditioning, after the underground water air-conditioning of bringing into use carries out heat exchange with underground water, enter sewer, though saved the energy, but cause phreatic waste, especially for deep phreatic water, excessive exploitation, cause the groundwater resources exhaustion, and surface subsidence in various degree can take place.People's plan is afterwards extracted underground water out and is carried out recharging identical stratum after the heat exchange, because in carrying out heat exchanging process, underground water does not contact with the external world, therefore can not cause water pollution, also can not cause the underground water waste.But, in actual application,, drawing water easily, and recharge difficulty because underground water has certain pressure, it is underground that the underground water that extracts often can not recharge in full, causes phreatic waste.
Summary of the invention
The technical problem that the present invention solves just provides a kind of underground water that extracts is all recharged to the water intaking stratum and can be to the recycling method of the groundwater recharge that underground water pollutes.
For solving the problems of the technologies described above, the technical scheme that the recycling method of groundwater recharge of the present invention adopts is: the recycling method of groundwater recharge comprises the following steps:
The first step is determined wellhole position and well bore, according to the hydrogeological situation in locality, determines the degree of depth of pumped well, and bores the pumped well wellhole, bores the inverted well wellhole identical with the degree of depth of pumped well in the precipitation radius of influence of pumped well;
Second step lifted well casing, put into the pumped well wellhole and the inverted well wellhole of having bored after by the order of sediment tube, filter pipe and wall casing the well casing butt joint being fixed;
The 3rd step, fill filtrate, according to the geological structure of filter pipe layer of sand of living in, choose the filtrate specification, between well casing and wellhole, fill the filtrate of choosing;
In the 4th step, envelope is also inserted clay on described filtrate top;
In the 5th step, well-flushing cleans pumped well and inverted well, and is clean until the water sand removal;
The 6th step, pumping equipment is installed and is recharged equipment, pumping equipment is installed respectively in described pumped well and inverted well and is recharged equipment, described pumping equipment with recharge equipment and be connected by heat-exchange apparatus.
Its additional technical feature is:
In described inverted well, pumping equipment is installed, the equipment that recharges is installed in described pumped well;
When described filter pipe layer of sand of living in was flour sand, described filtrate was a fine sand, carried out following operating procedure behind well-flushing and before pumping equipment being installed and being recharged equipment:
Described filtrate exceeds the height of filter pipe upper edge greater than becoming 10% of well section;
Be wound with filter screen at described filter pipe periphery;
Described filter screen is double-deck, and screen specification is the 60-120 order;
Distance between described pumped well and the inverted well is the 1/8-3/5 of the precipitation radius of influence of pumped well.
The recycling method of groundwater recharge provided by the present invention compared with prior art, have the following advantages: one, owing in the precipitation radius of influence of pumped well, bore the inverted well wellhole identical with the degree of depth of pumped well, make and drawing water and recharging in the process, form the loop of a circulation, underground water is lowered the temperature or intensification in underground flow process; Owing to behind shut-in well, carry out well-flushing again, make that in washing well process be unlikely to can produce bigger pressure by leaking gas between well casing and wellhole, duration of well flushing is short and more thorough; Since pumping equipment with recharge equipment and be connected by heat-exchange apparatus, make underground water not contact with the external world, can not pollute after recharging underground water; Its two owing in described inverted well, pumping equipment is installed, the equipment that recharges is installed in described pumped well, after the use pumped well draws water a period of time (for example 1 year), can utilize inverted well to draw water, and utilize pumped well to recharge, make to recharge like this to be more prone to; Its three because when described filter pipe layer of sand of living in is flour sand, described filtrate is a fine sand, behind well-flushing and pumping equipment is installed is carried out following operating procedure before the equipment with recharging:
Description of drawings
Fig. 1 is the structural representation of the recycling method of groundwater recharge of the present invention with pumped well and inverted well;
Fig. 2 carries out the pumped well of layer of sand displacement and the structural representation that inverted well is equipped during for flour sand for water intaking layer.
The specific embodiment
Be described in further details below in conjunction with the structure and the use principle of accompanying drawing the recycling method of groundwater recharge of the present invention.
As shown in Figure 1, the recycling method of groundwater recharge of the present invention comprises the following steps:
The first step is determined wellhole position and well bore, according to the hydrogeological situation in locality, determines the degree of depth of pumped well 1, and bores the wellhole of pumped well 1, bores the wellhole of inverted well 2 in the precipitation radius of influence of pumped well 1, and inverted well 2 is identical with the degree of depth of pumped well 1.Like this, make and drawing water and recharging in the process, form the loop of a circulation, underground water is lowered the temperature or intensification in underground flow process;
Second step lifted well casing, put into the wellhole of the pumped well 1 that has bored and the wellhole of inverted well 2 after by the order of sediment tube 3, filter pipe 4 and wall casing 5 the well casing butt joint being fixed; And the filter pipe 4 in pumped well 1 and inverted well 2 is positioned at same horizontal level, like this, guaranteed to draw water and recharge water at same water layer, be unlikely to cause underground water pollution because of different underground water mix.
The 3rd step, fill filtrate, according to the geological structure of filter pipe 4 layers of sand 6 of living in, choose the filtrate 7 of corresponding specification size, between well casing and wellhole, fill the filtrate of choosing 7, the upper edge of filtrate 7 exceeds the upper edge of filter pipe 4;
In the 4th step, shut-in well is inserted clay 8 on filtrate 7 tops, preferably with clay 8 compactings;
In the 5th step, well-flushing cleans pumped well 1 and inverted well 2, clean until the water sand removal, the method for well-flushing is a lot, can adopt multiple modes such as immersible pump well-flushing, piston well-flushing and immersible pump and piston combined washing well, also can adopt other known well-flushing mode, as long as the water sand removal only;
The 6th step, pumping equipment is installed and is recharged equipment, pumping equipment 9 is installed respectively in described pumped well 1 and inverted well 2 and is recharged equipment 10, pumping equipment 9 and recharge equipment 10 by heat-exchange apparatus 1
Connect, make underground water not contact, can not pollute after recharging underground water with the external world.
Certainly, the just artificial name of inverted well 2 and pumped well 1 is two identical wells in fact.When pumping equipment 9 being installed respectively in pumped well 1 and inverted well 2 and recharging equipment 10, also pumping equipment 9 can be installed in inverted well 2, the equipment 10 that recharges is installed in pumped well 1, after use pumped well 1 draws water a period of time (for example 1 year), can utilize inverted well 2 to draw water, and utilize pumped well 1 to recharge, make to recharge like this to be more prone to.
In above-mentioned steps, shunt in a well earlier, carry out well-flushing then, make that in washing well process be unlikely to can produce bigger pressure by leaking gas between well casing and wellhole, duration of well flushing is short and more thorough.
Certainly, filter pipe layer of sand of living in may be for sharpening layer of sand, coarse sands layer, middle layer of sand, fine sand layer or flour sand layer, for sharpening layer of sand, coarse sands layer, middle layer of sand, fine sand layer, because its water permeability is good, drawing water and recharging in the process, can produce negative pressure owing to draw water, the water that recharges is easier to be penetrated in the pumped well.But when filter pipe 4 layers of sand of living in are the flour sand layer, though produce negative pressure in the meeting of drawing water,, because the permeance property of flour sand layer is poor, the water that recharges is difficult to be penetrated in the pumped well, causes the groundwater recharge failure.As shown in Figure 2, when when filter pipe 4 layers of sand of living in are the flour sand layer, the filtrate 14 of filling between well casing and wellhole is fine sand, carries out following operating procedure after well-flushing finishes and before pumping equipment being installed and being recharged equipment:
In the operating process of carrying out above-mentioned steps two, between inverted well 2 and pumped well 1, produce very big negative pressure, flour sand in the layer of sand can enter pumped well with current, discharge well through suction pump 11, simultaneously, the fine sand filtrate of filling out between the well casing of inverted well 2 and wellhole 14 also under the effect of pressure, enters into the layer of sand of close inverted well 2 one sides between inverted well 2 and the pumped well 1; In the operating process of carrying out above-mentioned steps three, between inverted well 2 and pumped well 1, produce very big negative pressure, flour sand in the layer of sand can enter inverted well 2 with current, discharge well through suction pump 11, simultaneously, the fine sand filtrate of filling out between the well casing of pumped well 1 and wellhole 14 is also under the effect of pressure, enter into the layer of sand of close pumped well 1 one sides between inverted well 2 and the pumped well 1, like this, the layer of sand between inverted well 2 and the pumped well 1 is all replaced by the stronger fine sand layer of water permeability by the flour sand layer of permeance property difference.
In order to guarantee that the layer of sand between inverted well 2 and the pumped well 1 is replaced by the stronger fine sand layer of water permeability by the flour sand layer of permeance property difference, the upper edge of fine sand filtrate 14 exceeds the height of filter pipe upper edge greater than becoming 10% of well section.
In order to prevent that ratchel or other foreign material from entering well casing, is wound with filter screen 15 at filter pipe 4 peripheries; Filter screen 15 is preferably double-deck 60-120 purpose grid.
For displacement and the formation closed circuit that both conveniently carries out the flour sand layer of sand, it is too near and cause and draw water and the temperature of recharge water differs too little to be unlikely between pumped well 1 and the inverted well 2 distance again, and the distance between pumped well 1 and the inverted well 2 is the 1/8-3/5 of the precipitation radius of influence of pumped well 1.
Embodiment 1: the first step, determine wellhole position and well bore, and according to the hydrogeological situation in locality, determine that pumped well 1 and inverted well 2 are 150 meters, subdrilling pumped well 1, the wellhole of boring inverted well 2 in 3/5 position of the precipitation radius of influence of pumped well 1;
Second step lifted well casing, put into the wellhole of the pumped well 1 that has bored and the wellhole of inverted well 2 after by the order of sediment tube 3, filter pipe 4 and wall casing 5 the well casing butt joint being fixed; And the filter pipe 4 in pumped well 1 and inverted well 2 is positioned at same horizontal level;
The 3rd step, fill filtrate, according to the geological structure of filter pipe 4 layers of sand 6 of living in, choose the filtrate 7 of corresponding size, between well casing and wellhole, fill the filtrate of choosing 7, the upper edge of filtrate 7 exceeds the upper edge of filter pipe 4;
In the 4th step, shut-in well is inserted clay 8 on filtrate 7 tops, preferably with clay 8 compactings;
In the 5th step, well-flushing cleans pumped well 1 and inverted well 2, and is clean until the water sand removal, adopts multiple modes such as immersible pump and piston combined washing well;
The 6th step, pumping equipment is installed and is recharged equipment, pumping equipment 9 is installed respectively in described pumped well 1 and inverted well 2 and is recharged equipment 10, pumping equipment 9 with recharge equipment 10 and be connected by heat-exchange apparatus 16, make underground water not contact, can not pollute after recharging underground water with the external world.
Embodiment 2:
Determine wellhole position and well bore,, determine that pumped well 1 and inverted well 2 are 1000 meters, subdrilling pumped well 1, the wellhole of boring inverted well 2 in 2/5 position of the precipitation radius of influence of pumped well 1 according to the hydrogeological situation in locality; And be wound with double-deck 60 purpose filter screens 15 at filter pipe 4 peripheries.All the other steps are identical with embodiment 1.
Embodiment 3:
Determine wellhole position and well bore,, determine that pumped well 1 and inverted well 2 are 600 meters, subdrilling pumped well 1, the wellhole of boring inverted well 2 in 1/5 position of the precipitation radius of influence of pumped well 1 according to the hydrogeological situation in locality; And be wound with double-deck 80 purpose filter screens 15 at filter pipe 4 peripheries, all the other steps are identical with embodiment 1.
Determine wellhole position and well bore, according to the hydrogeological situation in locality, determine that pumped well 1 and inverted well 2 are 300 meters, subdrilling pumped well 1, bore the wellhole of inverted well 2 in 1/8 position of the precipitation radius of influence of pumped well 1, the filtrate of filling between well casing and wellhole is a fine sand, carries out following operating procedure after well-flushing finishes and before pumping equipment being installed and being recharged equipment:
Determine wellhole position and well bore, according to the hydrogeological situation in locality, determine that pumped well 1 and inverted well 2 are 400 meters, subdrilling pumped well 1, bore the wellhole of inverted well 2 in 1/7 position of the precipitation radius of influence of pumped well 1, the filtrate of filling between well casing and wellhole is a fine sand, by hollow drilling tool 13 injection pressure in inverted well 2 is 100 atmospheric water, do not contain in the water that suction pump 11 draws up till flour sand and the water sand removal only, the height that the upper edge of fine sand filtrate 14 exceeds filter pipe 4 upper edges is into 20% of well section.Be wound with double-deck 80 purpose filter screens 15 at filter pipe 4 peripheries.All the other steps are identical with embodiment 4.
Determine wellhole position and well bore, according to the hydrogeological situation in locality, determine that pumped well 1 and inverted well 2 are 100 meters, subdrilling pumped well 1, bore the wellhole of inverted well 2 in 1/4 position of the precipitation radius of influence of pumped well 1, the filtrate of filling between well casing and wellhole is a fine sand, in inverted well 2, inject liquid carbon dioxide or pressure is 50 atmospheric water by hollow drilling tool 13, do not contain in the water that suction pump 11 draws up till flour sand and the water sand removal only, the height that the upper edge of fine sand filtrate 14 exceeds filter pipe 4 upper edges is into 18% of well section.Be wound with double-deck 60 purpose filter screens 15 at filter pipe 4 peripheries.All the other steps are identical with embodiment 4.
Embodiment 7
Determine wellhole position and well bore, according to the hydrogeological situation in locality, determine that pumped well 1 and inverted well 2 are 100 meters, subdrilling pumped well 1, bore the wellhole of inverted well 2 in 1/4 position of the precipitation radius of influence of pumped well 1, the filtrate of filling between well casing and wellhole is a fine sand, in inverted well 2, inject liquid carbon dioxide by hollow drilling tool 13, do not contain in the water that suction pump 11 draws up till flour sand and the water sand removal only, the height that the upper edge of fine sand filtrate 14 exceeds filter pipe 4 upper edges is into 18% of well section.Be wound with double-deck 60 purpose filter screens 15 at filter pipe 4 peripheries.All the other steps are identical with embodiment 4.
The recycling method of groundwater recharge of the present invention not only is applicable to the Quaternary system earth formation of shallow-layer, middle level, deep layer, is applicable to that also Guantao, Ming Hua town grade in an imperial examination three are earth formation.
Claims (7)
1, the recycling method of groundwater recharge is characterized in that: comprise the following steps:
The first step is determined wellhole position and well bore, according to the hydrogeological situation in locality, determines the degree of depth of pumped well, and bores the pumped well wellhole, bores the inverted well wellhole identical with the degree of depth of pumped well in the precipitation radius of influence of pumped well;
Second step lifted well casing, put into the pumped well wellhole and the inverted well wellhole of having bored after by the order of sediment tube, filter pipe and wall casing the well casing butt joint being fixed;
The 3rd step, fill filtrate, according to the geological structure of filter pipe layer of sand of living in, choose the filtrate specification, between well casing and wellhole, fill the filtrate of choosing;
In the 4th step, shut-in well is inserted clay on described filtrate top;
In the 5th step, well-flushing cleans pumped well and inverted well, and is clean until the water sand removal;
The 6th step, pumping equipment is installed and is recharged equipment, pumping equipment is installed respectively in described pumped well and inverted well and is recharged equipment, described pumping equipment with recharge equipment and be connected by heat-exchange apparatus.
2, the recycling method of groundwater recharge according to claim 1 is characterized in that: in described inverted well pumping equipment is installed, the equipment that recharges is installed in described pumped well.
3, the recycling method of groundwater recharge according to claim 1 and 2, it is characterized in that: when described filter pipe layer of sand of living in is flour sand, described filtrate is a fine sand, carries out following operating procedure behind well-flushing and before pumping equipment being installed and being recharged equipment:
Step 1, in described pumped well suction pump is installed, is provided with the hollow drilling tool that is connected with compression pump in described inverted well, the end of this hollow drilling tool is goed deep under the liquid level;
Step 2, open described suction pump, upwards draw water, in inverted well, injects liquid carbon dioxide or the atmospheric water of 10-100 by described hollow drilling tool simultaneously, in suction pump draws up the water that comes, do not contain flour sand and water sand removal only till;
Step 3, in described inverted well, suction pump is installed, in described pumped well, is provided with the hollow drilling tool that is connected with compression pump, carry out the operation of step 2.
4, the recycling method of groundwater recharge according to claim 1 and 2 is characterized in that: described filtrate exceeds the height of filter pipe upper edge greater than becoming 10% of well section.
5, the recycling method of groundwater recharge according to claim 1 and 2 is characterized in that: be wound with filter screen at described filter pipe periphery.
6, the recycling method of groundwater recharge according to claim 5 is characterized in that: described filter screen is for double-deck, and screen specification is the 60-120 order.
7, the recycling method of groundwater recharge according to claim 1 is characterized in that: the distance between described pumped well and the inverted well is the 1/8-3/5 of the precipitation radius of influence of pumped well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100552340A CN100545545C (en) | 2008-06-18 | 2008-06-18 | The recycling method of groundwater recharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008100552340A CN100545545C (en) | 2008-06-18 | 2008-06-18 | The recycling method of groundwater recharge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101298945A CN101298945A (en) | 2008-11-05 |
| CN100545545C true CN100545545C (en) | 2009-09-30 |
Family
ID=40078847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2008100552340A Expired - Fee Related CN100545545C (en) | 2008-06-18 | 2008-06-18 | The recycling method of groundwater recharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100545545C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104219A (en) * | 2011-11-14 | 2013-05-15 | 国惠环保新能源有限公司 | Method using same-layer equivalent in-site extraction well group to extract underground heat energy |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505677A (en) * | 2011-09-29 | 2012-06-20 | 上海隧道工程股份有限公司 | Method for controlling sedimentation through recharging engineering groundwater |
| CN102606127B (en) * | 2011-12-22 | 2015-03-18 | 新奥气化采煤有限公司 | Gasification furnace underground water prevention and control method and device for underground coal gasification |
| CN102425870A (en) * | 2011-12-26 | 2012-04-25 | 中国科学院地质与地球物理研究所 | Method for integration of improvement of geothermal recharge rate and geological storage of CO2 |
| CN104140153B (en) * | 2013-05-08 | 2016-09-21 | 赵学民 | A kind of device using nanotechnology to repair rock stratum environmental pollution and application |
| CN105698418B (en) * | 2016-03-10 | 2018-08-31 | 黑龙江省龙水国际地质工程股份有限公司 | Geothermal well deep hole heat exchanger |
| CN106285571B (en) * | 2016-09-29 | 2018-11-30 | 江苏省水利科学研究院 | A kind of pre- mining system of water resources in coal mines subregion and method |
| CN106522306A (en) * | 2016-12-17 | 2017-03-22 | 山东省水利科学研究院 | Riverside underground water recharging system with composite functions of charging and pumping |
| CN107606682A (en) * | 2017-09-18 | 2018-01-19 | 河北华威新能源科技有限公司 | The very bi-directional filtered geothermal utilization heating system of recharge |
| CN107726422B (en) * | 2017-10-17 | 2020-11-20 | 河南理工大学 | Pore groundwater circulation heating system of solar energy auxiliary water source heat pump |
| CN107990397A (en) * | 2017-12-10 | 2018-05-04 | 梧州市国佳节能科技有限公司 | Heat-supply system based upon geothermal energy |
| CN110616772B (en) * | 2019-09-11 | 2020-11-03 | 张沙莎 | Recharge system for rainwater storage and monitoring and construction method of recharge system |
| CN113753981A (en) * | 2021-09-17 | 2021-12-07 | 河北省地矿局第三水文工程地质大队 | Fourth series underground water and soil pollution treatment method |
-
2008
- 2008-06-18 CN CNB2008100552340A patent/CN100545545C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104219A (en) * | 2011-11-14 | 2013-05-15 | 国惠环保新能源有限公司 | Method using same-layer equivalent in-site extraction well group to extract underground heat energy |
| CN103104219B (en) * | 2011-11-14 | 2015-08-19 | 国惠环保新能源有限公司 | Utilize and draw back with layer equivalent original place the method that well group draws underground heat energy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101298945A (en) | 2008-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100545545C (en) | The recycling method of groundwater recharge | |
| CN101736732B (en) | Pressure and water reduction construction method of ultra-deep foundation pit confined water | |
| CN103541705B (en) | The stifled tune equipment of high temperature and high temperature that super-heavy oil deposit steam drives block up tune method | |
| CN112197448B (en) | Geothermal development system | |
| CN100526755C (en) | Groundwater recharge method | |
| CN109252832B (en) | Hydrate exploitation method and exploitation device based on reservoir stability | |
| CN110552671B (en) | CO auxiliary by dimethyl ether 2 Method for realizing high-efficiency development of heavy oil reservoir by flooding | |
| CN106194122A (en) | The method that a kind of oil field abandoned well transform geothermal well or sub-salt well as | |
| CN111395995B (en) | Secondary well completion method for aquifer energy storage well | |
| CN112524829A (en) | Heat exchange working medium recyclable same-well heat recovery method | |
| CN106382106B (en) | The method and apparatus for carrying out underground period huff and puff oil recovery using supercritical carbon dioxide | |
| CN214832823U (en) | Pressure-bearing dewatering well | |
| CN207348532U (en) | It is a kind of based on level to the full recharge circulatory system of the hot spring well for the technology of wearing | |
| CN203463029U (en) | Well pipe structure | |
| CN206129244U (en) | Colliery water resources regionalization is mining system in advance | |
| CN103615014B (en) | A kind of dewatering device of soft soil foundation pit and using method thereof | |
| CN205502044U (en) | Be applied to precipitation structure in grittiness water -bearing stratum under building | |
| CN215571342U (en) | Same-fracturing geothermal tail water recharging device | |
| CN113006755A (en) | Method for fracturing transformation of interlayer in SAGD (steam assisted gravity drainage) mining mode | |
| CN205348204U (en) | Light well point precipitation system | |
| CN202787289U (en) | Shut-in dewatering device for tube well | |
| CN102278116A (en) | Device and method for manufacturing underground frozen wall in cold areas in winter | |
| CN205917685U (en) | Integral type well dotted arranges vacuum system | |
| CN113062718A (en) | Fracturing and recharging integrated geothermal mining and recharging system and method | |
| CN114250801A (en) | Pipe well and light well point combined dewatering construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090930 Termination date: 20180618 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |