CN102401510A - Well completion technology for water source heat pump saturated vapor decompression complex well - Google Patents
Well completion technology for water source heat pump saturated vapor decompression complex well Download PDFInfo
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- CN102401510A CN102401510A CN2011103678431A CN201110367843A CN102401510A CN 102401510 A CN102401510 A CN 102401510A CN 2011103678431 A CN2011103678431 A CN 2011103678431A CN 201110367843 A CN201110367843 A CN 201110367843A CN 102401510 A CN102401510 A CN 102401510A
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Abstract
The invention discloses a well completion technology for a water source heat pump saturated vapor decompression complex well, and is designed to solve the bottleneck problem that energy conservation and emission reduction are limited due to mutual interference of gradually reduced recharging amount in the operation of a unit and unreasonable layout of a pumping well and a recharging well in the process of recharging groundwater. The well completion technology comprises the following steps of: in the process of recharging the groundwater, determining a well completion rule by utilizing a recharging speed of recharged water contacted with a fine layer and the difference in the vertical direction, and realizing different functions of groundwater of different-depth fracture surfaces on a vertical fracture surface by using the saturated vapor decompression complex well; and during recharging, releasing small air bubbles to contact the fine layer by using a saturated vapor decompression exhaust pipe in a recharging cylinder wall, concentrically welding a well completion pumping cylinder and a well completion recharging cylinder into a whole through a reducer pipe, increasing the bore of the well completion recharging cylinder to increase the sectional areas of an inverted filter layer and a water layer and the recharging amount on a large-particle layer, so that the recharging speed is improved to ensure the recharging stability and realize energy conservation and emission reduction. The complex well has an up-and-down structure, the layout between wells is more reasonable, and a space is saved.
Description
Technical field
The present invention relates to a kind of well drilling technology that is used for water source pumped well and inverted well, relate in particular to the reduce pressure well drilling technology of compound well of the full vapour of a kind of water resource heat pump.Being mainly used in the water yield that realizes thermostatted water provides, and the water resource of not disturbing of recharging fully of differential temperature water is handled.
Background technology
In hydrogeology work, finding because the stability of the extraction of the water yield, can be used as the assessment of water quantity on Cooling and Heat Source basis, is success, accurately under the situation of having abundant water resources through practice examining for many years.Is the difficult point of problem how to recharge? At present, the phreatic problem of recharging is not allow the difficult point of avoiding: the one, and through recharging the backwater amount decay gradually in unit operation behind the experimental test, the backwater amount can't be guaranteed; The 2nd, arrange that science is not influential to the backwater amount between the present pumped well and the well of back water well, make it become the bottleneck of restriction energy-saving and emission-reduction.
Stratum with areas of Shenyang is an example, because the iron manganese content of geology mineral is high, so recharge in the process because sudden and violent gas effect, iron and manganese oxides gets off to form the obstruction to hole with flocculent deposit, and the approach of dealing with problems is usually wanted normal well-flushing or carried out sudden and violent gas disposal earlier.So not only waste time and energy, and directly influence the amount of recharging of water resource.
Arrange with the origin cause of formation characteristics on phreatic migration mode and stratum closely related between the well of pumped well and back water well; Phreatic extraction process is that underground water is leaned on power from becoming the well section; With the subsurface flow of pressure-bearing, put forward from different fine aspects, this process is compiled the speed of the fine aspect of particle becomes the speed in the section; Form the basic fundamental main points of the hydrogeology of drawing water, do not considered the difference between numerous subparticle aspects.And such characteristics are in the backwater process, and so generalization ignored the difference of aspect, and in reality, the observation of each fine particle aspect have been found the extension of its aspect; Shown them in the very long period of history, piled up, precipitate, receive the influence of water velocity with highly stable speed mode, this has shown that each fine aspect has different nature makings; This point is exactly ignored by our vast hydrogeologist; We can say the difference of the trickle aspect that we are disinclined to understand fully, the underground water migration main body of being relied on exactly; Its difference has reflected phreatic migration rule.Therefore unclear phreatic true attribute and migration rule are to cause the at present phreatic puzzled main root of recharging.Therefore become well mainly to exist inverted well after operation after a while at present; Find that the backwater amount is arranged between the well of decay and pumped well and back water well less than rule accurately gradually and can follow in unit operation; The interactive interference of these two problems makes it become the bottleneck of restriction energy-saving and emission-reduction.
Summary of the invention
The present invention is in order to solve underground water in the process of recharging; The backwater amount arranges not between the well of decay and pumped well and back water well gradually that in unit operation rule can be followed accurately; The interactive interference of these two problems; Make its technical problem such as bottleneck that become the restriction energy-saving and emission-reduction, the well drilling technology that provides the full vapour of a kind of water resource heat pump to reduce pressure compound well, its step is following: the reduce pressure well drilling technology of compound well of the full vapour of water resource heat pump; Its step is following: recharge in the process phreatic; Utilize the contacted difference of recharging speed and vertical existence of recharge water and fine aspect to be specified to the well rule, utilize the full vapour compound well that reduces pressure, on a vertical cross section, the underground water of different depth section is made different functions; In recharging; Be utilized in the full vapour decompression exhaust pipe that recharges in the barrel, discharge because micro-bubble contacts with fine aspect at any time, and the pressure drag that on the fine particle aspect, forms and will become well water pumping cylinder and Cheng Jing to recharge through reducer pipe tin to be welded as a whole with one heart; Add the great achievement well and recharge an aperture; And then the sectional area of increasing loaded filter and water layer, strengthen the backwater amount of backwater process on underground particle level and the perpendicular muscle mode that adopts steel reinforcement cage to tie up bamboo pole, backwater is fully contacted with the subterranean particle aspect; Backwater speed is accelerated, with the stability that guarantees to recharge.
Characteristics of the present invention and beneficial effect: solve underground water in the process of recharging; Can discharge at any time because micro-bubble contacts with fine aspect; Pressure in bubbles forms pressure drag on the fine particle aspect; Backwater speed is accelerated,, guaranteed that the amount of recharging and pump-out are reciprocity on a some position according to full vapour freely control that compound well realizes drawing water and recharge of reducing pressure.Its use makes the development and utilization of underground water heat energy that wide space arranged.Such as, the transformation of old coal-burning boiler, as long as be aided with the high temperature unit and energy storage pool can be realized.Transform example as with 30,000 square meter house heatings, drop into and not to be higher than 80 yuan/square meter, 15 yuan of operation heating costs/below the square meter; Be used for making use of rain and flood, the individual well backwater is at 80m
3About/h, this is applied to city waterlogging serious area, can a spot of cost input, solve a city waterlogging difficult problem.Utilize the river of city periphery, the huge accumulator space in Furukawa deposition river course, be enough to solve the Cooling and Heat Source demand of city heating and refrigeration.The target that realizes energy-saving and emission-reduction of promoting the use of through water resource heat pump.
The pumped well of compound well and inverted well adopt between the well of up-down structure and arrange, meet phreatic migration rule, make between well layout more reasonable, and save the space.
Description of drawings
Fig. 1 the present invention embezzles the reduce pressure structural representation of compound well of vapour
The structural representation of Fig. 2 two well reduced diameter portions
The structural representation of blocking in Fig. 3 well
Fig. 4 is Fig. 3 vertical view
The specific embodiment
Referring to Fig. 1; The reduce pressure well drilling technology of compound well of the full vapour of water resource heat pump; Its step is following: recharge in the process phreatic; Utilize the contacted difference of recharging speed and vertical existence of recharge water and fine aspect to be specified to the well rule, utilize the full vapour compound well that reduces pressure, on a vertical cross section, the underground water of different depth section is made different functions; In recharging; Be utilized in the full vapour decompression exhaust pipe that recharges in the barrel, discharge because micro-bubble contacts with fine aspect at any time, and the pressure drag that on the fine particle aspect, forms and will become well water pumping cylinder and Cheng Jing to recharge through reducer pipe tin to be welded as a whole with one heart; Add the great achievement well and recharge an aperture; And then the sectional area of increasing loaded filter and water layer, strengthen the backwater amount of backwater process on underground particle level and the perpendicular muscle mode that adopts steel reinforcement cage to tie up bamboo pole, backwater is fully contacted with the subterranean particle aspect; Backwater speed is accelerated, with the stability that guarantees to recharge.
Referring to Fig. 1, the reduce pressure well drilling technology of compound well of the full vapour of water resource heat pump, its step is following: recharge in the process phreatic; Utilize the contacted difference of recharging speed and vertical existence of recharge water and fine aspect to be specified to the well rule; Utilize the full vapour compound well that reduces pressure, on a vertical cross section, the underground water of different depth section is made different functions, utilizing full vapour to reduce pressure, compound well realizes drawing water and recharge on a some position freely controls; Promptly in the process of recharging, contact with fine aspect owing to micro-bubble; Pressure in bubbles forms pressure drag on the fine particle aspect, will become well water pumping cylinder and Cheng Jing to recharge tube through reducer pipe and be connected with one heart, add the great achievement well and recharge an aperture; And then the sectional area of increasing loaded filter and water layer, guarantee the backwater amount of backwater process on underground particle level; The perpendicular muscle mode that adopts steel reinforcement cage to tie up bamboo pole; Backwater is fully contacted with the subterranean particle aspect; And be utilized in the full vapour decompression exhaust pipe that recharges in the barrel pressure drag that is formed by full vapour on the particle level is discharged; Reduce the backwater resistance, backwater is recharged in the alternating temperature section on stratum and realize backwater; Through the individual well bailing test, be no less than 48h total perdurabgility of drawing water, and when stable level 16h remains unchanged, recharges test period 48h, and stable 16h has guaranteed that also water level is constant, reached tentatively that to recharge the water yield be 50m
3/ h.
Wherein: the full vapour of the water resource heat pump compound well that reduces pressure, it mainly is made up of well chamber 1, inverted well 2 and pumped well 3; Said well chamber 1 is positioned at compound Jing Jingkouchu; Through the blocking 9 in the concentric reduced diameter portion 8 between inverted well and the pumped well, will be positioned at compound aboveground inverted well 2 and separate, and form the compound well of a up-down structure with the pumped well 3 that is positioned at compound down-hole portion; The borehole wall of the inverted well 2 on said top and outside in the loaded filter between the wall of hole, be axially arranged with full vapour decompression exhaust pipe 6, its upper orifice leads to outside the well; The constant voltage testing tube 13 that leads to pumped well also is housed on said blocking 9.
The reduce pressure construction technology and the step of compound well of full vapour is following:
1, prepares before the drilling well
Dig the casing hole of 1.5m-2m (deciding according to situation in the field), the placement diameter is 1.5m, the iron casing of dark 2m (forming well chamber 1), and closely knit with loess, water rams good seal again, guarantees not occur drainage.Stock tank (20m * 15m) use as storing dredges outside the casing hole.
2, beginning drilling well
Drilling well is gone in the casing hole and is filled to the top, and the well machine is in place, and with interior back, drill bit (bit diameter is 1.5m) introducing casing hole centering, boring and casing central point vertical missing degree must not surpass 5%, carries out safety preparation inspection back startup rig and begins to creep into.Carrying, when descending drill bit, noting preventing the violent pendulum impact borehole wall of drill bit, and make whole boring be full of water, keep enough head pressures, with anti-collapse hole.
3, confirm well depth
Drilling process is done corresponding record to advanced depth with the situation of the lithology of discharging, and every 15cm does the lithology record one time.The lithology situation is done field assay when creeping into, and pays special attention to the variation of lithology to the 30m place, changes bit diameter when creeping into the 35m place, uses the drill bit of diameter 700mm instead and proceeds probing work.This prospecting test is crept into up to the basement rock crushable layer and is ended the hole, and tentatively drafting the degree of depth is 70m.Arrangement lithology record material is to confirm the compound well section of recharging depth and the section of drawing water depth.
4, the setting of well casing
In conjunction with the one-tenth well design of lithology state, just draft top 35m as full vapour decompression inverted well 2, well chamber 1 is positioned at the upper end of inverted well 2; Bottom 35m is as pumped well 3.The hole diameter φ 600mm of inverted well 2, well depth 35m, the real tube portion of inverted well is the thick helix tube of 6-8mm; Chimney filter A4 partly adopts iron pipe vertically to cut earlier bar (being in strip the slit), and vertical then pad muscle guarantees that porosity is not less than 26%, laterally twines silk with the polypropylene plastics stockline again, the corrosion protection design method of last outer bag 60-80 order gauze.Chimney filter adds full vapour decompression exhaust pipe 6, has strengthened recharge rate, and is stable with what guarantee to recharge for a long time.It is 50m that initial setting recharges the water yield
3/ h.
The bottom is a pumped well 3, well depth 35m, and drilling diameter φ 700mm, hole diameter φ 426mm helix tube, chimney filter B5 length is 30m, the bottom stays the real pipe of 1-1.5m as sediment tube, the same inverted well technology of chimney filter B5 part.
Referring to Fig. 2-Fig. 4; Weld together with up big and down small real pipe φ 600mm-φ 426mm reducing 8 upper connectors 11 with through iron double-edged fine-toothed comb 10 and following connector 12 between inverted well 2 and the pumped well 3; And two wells are separated through blocking 9; Form the compound well of a up-down structure, make between the well of compound well layout more reasonable.To carry out the antiseep processing to pumped well and inverted well.The constant voltage testing tube 13 that leads to pumped well also is housed, the water level that can make inverted well and pumped well keep-up pressure balance and be convenient to test pumped well on blocking 9.
5, manage down
According to becoming the well design, being provided with of well casing needs to manage under the field Welding.To prevent its torsional deformation in the following pipe process, guarantee that its integral body is straight, concentric.
6, gravel material grating
According to the difference of formation lithology, different according to the demand of Cheng Jing, the gravel material 7 of configuration different gradation carries out the backfill of gravel material.
7, technology for washing well
The gravel material fills after the end, and well-flushing is intended with 6 or 9m
3Air compressor machine carry out well-flushing, pumping and washing process is removed the deposition silt particle with two-tube technology for washing well, washes the mud skin with the single tube technology for washing well, should thoroughly clean residue and retaining wall mud skin at the bottom of the hole, it is clean to reach the water sand removal.
8, following pump
Initial setting is used 50m
3The water pump of/h draws water, and the installation of well pump will be satisfied the function that compound well draws water, recharges.
9, draw water, recharge test
Well-flushing carries out the individual well bailing test earlier after finishing, and be no less than 48h total perdurabgility of drawing water, and when stable level 16h remains unchanged, as the pump-out stability number, and keeps a record.Bailing test is recharged test after finishing, and recharges test period 48h, stablizes 16h, and guaranteed water level is constant, as the stability number that recharges the water yield.Take out, recharge water sampling in the process of the test, survey water temperature, in order to doing relevant water sample analysis.
10, well chamber
Owing to adopt the reduce pressure construction technology of compound well of full vapour, the well chamber design of Cheng Jinghou will match with the reduce pressure technology of compound well of full vapour.Be contained in the blast pipe 6 that recharges in tube and well chamber 1 wall owing to utilize, the pressure drag that is formed by the vapour of satisfying on the particle level is discharged, to have reduced the backwater resistance, backwater to be recharged in the alternating temperature section on stratum be easy to realize backwater.Water resource heat pump like the prosperous big world in Shenyang draws water, recharges in the practice and attempt, and perfect this technology has obtained success.This project 1300m
3/ h draws water, recharges.Effluent temperature constancy is 14 ℃, and return water temperature does not wait for 8.2 ℃-8.4 ℃, and leaving water temperature is fluctuation not.
11, test report
After the off-test, the finishing analysis data are submitted the relevant water yield of drawing water, water temperature to and are recharged water yield parameter, the completion report of construction work of accomplishing this test well with becomes well to report to report referring to 2 one-tenth wells of annex 1 completion report of construction work and annex.
The engineering practice of water resource heat pump can be summarized such path: with the evaluation water yield of water resource, be arranged as characteristics with the different sections of thermostat layer and troposphere, consider full vapour, corrosion, contact area correlation technique link, realize drawing water and recharging.
Claims (1)
1. the full vapour of the water resource heat pump well drilling technology of compound well that reduces pressure; Its step is following: recharge in the process phreatic; Utilize the contacted difference of recharging speed and vertical existence of recharge water and fine aspect to be specified to the well rule; Utilize the full vapour compound well that reduces pressure, on a vertical cross section, the underground water of different depth section is made different functions; In recharging; Be utilized in the full vapour decompression exhaust pipe that recharges in the barrel; At any time discharge because micro-bubble contacts with fine aspect; And the pressure drag that on the fine particle aspect, forms and will become well water pumping cylinder and Cheng Jing to recharge tube through reducer pipe to be welded as a whole with one heart, to add the great achievement well to recharge an aperture, and then strengthen the sectional area of loaded filter and water layer; Strengthen the backwater amount of backwater process on underground particle level and the perpendicular muscle mode that adopts steel reinforcement cage to tie up bamboo pole, backwater is fully contacted with the subterranean particle aspect.
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| CN 201110367843 CN102401510B (en) | 2011-11-07 | 2011-11-18 | Well completion technology for water source heat pump saturated vapor decompression complex well |
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| CN201110348246 | 2011-11-07 | ||
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| CN 201110367843 CN102401510B (en) | 2011-11-07 | 2011-11-18 | Well completion technology for water source heat pump saturated vapor decompression complex well |
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| CN102401510B CN102401510B (en) | 2013-07-24 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2752683Y (en) * | 2004-10-10 | 2006-01-18 | 北京同方人工环境工程技术有限公司 | Recharge cage |
| KR100670082B1 (en) * | 2006-01-09 | 2007-01-17 | 한국과학기술연구원 | Heat pump system using ground water |
| CN101158515A (en) * | 2007-10-18 | 2008-04-09 | 靖洪铭 | Strong anti-block automatic pollution discharge breast wall type backflow device |
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2011
- 2011-11-18 CN CN 201110367843 patent/CN102401510B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2752683Y (en) * | 2004-10-10 | 2006-01-18 | 北京同方人工环境工程技术有限公司 | Recharge cage |
| KR100670082B1 (en) * | 2006-01-09 | 2007-01-17 | 한국과학기술연구원 | Heat pump system using ground water |
| CN101158515A (en) * | 2007-10-18 | 2008-04-09 | 靖洪铭 | Strong anti-block automatic pollution discharge breast wall type backflow device |
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