CN101418582B - Method and special tool for cleaning old water-supply well - Google Patents
Method and special tool for cleaning old water-supply well Download PDFInfo
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- CN101418582B CN101418582B CN200810147753XA CN200810147753A CN101418582B CN 101418582 B CN101418582 B CN 101418582B CN 200810147753X A CN200810147753X A CN 200810147753XA CN 200810147753 A CN200810147753 A CN 200810147753A CN 101418582 B CN101418582 B CN 101418582B
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Abstract
The invention belongs to the technical field of cleaning of a water supply well, and in particular relates to a method for cleaning an old water supply well. The method comprises the following steps:a. a solution is prepared, and sodium hexametaphosphate (NaPO3)6 or sulfamic acid H3NO3S is weighed according to the capacity of a water tank, wherein the weight percent concentration of the preparedsolution in the water tank is between 10 and 15 percent; b. a well workover tool is prepared; and c. well workover is performed, namely the prepared sodium hexametaphosphate/ sulfamic acid solution inthe step a is injected into the well and particularly injected into a filter position by a high-pressure pump, and stands in the well for 24 to 26 hours, wherein the weight percent concentration of the sodium hexametaphosphate/ sulfamic acid solution in the well is kept between 3 and 5 percent during the retention period; and a special cleaning brush is used for performing segmented cleaning on ablocked position of a filer at a velocity of 15 to 30 minutes per segment, and a segmented well-flushing pumping machine is used for performing segmented drainage on the blocked position of the filter. The method achieves the aim of improving the water yield of the old well, wherein the water yield is increased by 20 to 50 percent after well workover. The invention also relates to a special well-flushing tool.
Description
Technical field the invention belongs to the method in water supply well cleaning technique field, particularly a kind of cleaning old water-supply well.The invention still further relates to the well-flushing special tool.
The background technology water supply well used after 10～15 years, can in the borehole wall and filter pipe slit, leave the chemical substance deposition, sedimental kind is relevant with phreatic water quality, calcium commonly, except that the chemical substance deposition is arranged in the filter pipe slit, also have superfine particle and stop up the filter pipe slit, so just influenced the water outlet effect of water supply well greatly, cause well yield to reduce year by year.At present, the general chemical agent that disposes by sediment that adopts dropped in the well when water supply well was carried out well-flushing, itself and deposit are fully reacted and softening, adopt the piston pull again, connect gutter with air compressor machine or water pump, extract the water in the pit shaft out, reach the purpose of well-flushing, this well-flushing mode generally only can partly be improved the water yield minimizing that old water-supply well causes because of chimney filter stops up.Its shortcoming is to lack specific aim, can not segmentation the filter pipe ad-hoc location be carried out the brute force cleaning of drawing water, can not scrub the filter pipe and the borehole wall, particularly some are stopped up serious, the sediment that chemical agent can not thoroughly soften is again removed comparatively difficulty, very difficult extraction when draining, and well-flushing inefficiency, well washing effect are not good.
Summary of the invention at because of water supply well filter pipe slit by obstructions such as chemical substances, cause well yield to reduce year by year, and the pumping and washing process effect of present stage is undesirable and the problem of inefficiency, the technical problem to be solved in the present invention be to provide a kind of to filter pipe and pit shaft clean thoroughly, clean, the method for well-flushing efficient height, effective cleaning old water-supply well.
The technical scheme that technical solution problem of the present invention is taked is: a kind of method of cleaning old water-supply well comprises the steps:
A, obtain solution
Inject tap water in the water tank; Press water tank volume, weighing calgon (N
aPO
3)
6Or sulfamic acid H
3NO
3S, the weight percent concentration of configuration solution is 12～15% in the water tank;
B, preparation workover tool
Air compressor machine, its decrement of this air compressor machine 9～15m
3, high-pressure pump, drilling rod, outlet pipe; Prepare TV down-hole camera system, this TV down-hole camera system is a panorama type, and camera lens can rotate by 360 degree; Special-purpose cleaning brush, the segmentation well-flushing utensil etc. that draws water;
C, well workover
C.1 extract pumping equipments such as pump line in the old well, cable, take out foreign material such as wood;
C.2, pumping equipments such as air compressor machine, outlet pipe are installed, are carried out the shaft bottom sediment outflow in the usual way;
C.3 slowly insert TV down-hole camera system in the well, carry out in the first time well shooting and check,, damaged degree whether damaged and content such as whether be necessary to repair by TV down-hole camera system record well casing, the filter pipe degree of depth, reducing position, filter pipe chocking-up degree, obstruction kind, well casing and filter pipe;
C.4 with high-pressure pump in well, mainly be calgon or the sulfamic acid solution that filter pipe position implantation step a is configured, stopped 24 hours to 26 hours in well, calgon or sulfamic acid solution weight percent concentration remain on 3%～5% in the retention period well;
C.5 special-purpose cleaning brush connecting rod is connected with drilling rod, the unlatching rig carries out segmentation to the filter pipe block part by the speed of every section 15～30min and scrubs 8～10 meters of segment lengths; The location segment that will brush toward the last time from the shaft bottom has been scrubbed; The draw water water inlet pipe of utensil of segmentation well-flushing is threaded with gutter, opens rig filter pipe block part district drainage; Suspension content is less than 5g/m in the water of discharging
3Till;
C.6TV the down-hole camera system is carried out shooting inspection in the well second time, and whether the filter pipe position also exists obstruction etc. in the manhole, as reaches the designing requirement of reparation well, carries out set by step c.7; Otherwise repeating step c.4 extremely c.5; Repair the well designing requirement until reaching;
C.7 the interior calcium oxychloride that adopts of well is sterilized, and Eusol concentration is by the product description requirement in the well, and Eusol stops in well after 24 hours extract out at least, and chlorine ion concentration reaches the preceding level of sterilization in the survey water.
The technical scheme of special-purpose cleaning brush and segmentation pumping device is respectively:
Well-flushing brush in a kind of water supply well well, it is characterized in that: it comprises connecting rod, cylinder and brush board; Cylinder is installed in the side surface of connecting rod, and brush board is installed in the side surface of cylinder, and the outside of brush board is installed with bristle, and the bristle circular diameter that bristle constitutes is slightly larger than the interior caliber of filter pipe; The connecting rod one or both ends are provided with connecting thread.The diameter of cylinder is determined according to the water supply well diameter, the generally long 300～500mm of cylinder.
A kind of water supply well segmentation well-flushing utensil that draws water is characterized in that: it comprises, and the upper end is opened wide, the water inlet pipe of lower end closed, is fixed on two of water inlet pipe top and bottom and overlaps flange; Be provided with dozens of to hundreds of inlet openings between water inlet pipe sidewall, the two cover flange; Be fixed with sealing pad between the upper flange of every cover flange and the lower flange, the external diameter of sealing pad is suitable with the water supply well well casing inwall that is cleaned, and the water inlet pipe upper end is provided with connecting thread.
3～5 meters of distances between two sealing pads behind the water supply pit shaft, make its a certain position in pit shaft form closed down, only allow this a part of water to enter water inlet pipe when drawing water from the inlet opening, reach the draw water purpose of well-flushing of this part chimney filter brute force.
Method provided by the present invention is checked by the under-mine TV camera system, earlier old water-supply well is carried out Chemical cleaning with organic acid such as calgon, amino yellow acid solution, in conjunction with mechanical treatment such as scrubbing, brute force is drawn water, be that old water-supply well adopts the chemical well-flushing method that combined with mechanical well-flushing, reach the old well of removal influence and go out water factor, eliminate or eliminate as possible the situation that water supply well filter pipe slit is stopped up by materials such as chemistry, reach the purpose of the water yield of improving old well, the water outlet recruitment after the well workover reaches 20～50%.
Table 1 is the forward and backward max water yield contrast table of well workover, the conclusion that draws from table 1 is as can be seen: by adopting technology for washing well provided by the invention, the individual well max water yield obviously increases behind the well-flushing, minimum is 8.73%, up 60.08% illustrates that just using method provided by the invention has the effect that significantly improves water yield to the old water-supply well well-flushing.
Description of drawings Fig. 1 is the structural representation of special-purpose cleaning brush,
Fig. 2 is the vertical view of Fig. 1,
Fig. 3 is the structural representation of brush board,
Fig. 4 is the draw water structural representation of utensil of segmentation well-flushing,
Fig. 5 is the vertical view of Fig. 4,
Fig. 6 is draw water utensil and a well casing assembly relation schematic diagram of segmentation well-flushing.
Among the figure: the 1-connecting rod, the 101-connecting thread, the 2-cylinder, the 201-cylinder hole, the 3-brush board, the 301-bolt hole, 302-plants pore, 4-bristle, 5-set bolt, D-bristle circular diameter; The 6-water inlet pipe, 601-inlet opening, 602-connecting thread, 7-flange, 701-upper flange, 702-lower flange, 703-flange endoporus, 8-sealing pad, 9-water supply well well casing, 10-water supply well filter pipe, 11-flange bolt.
Max water yield contrast table before and after table 1 well workover
| The well numbering | Well depth (m) | Time of pumping (h) | Max water yield (m before the well workover3/d) | Max water yield (m after the well workover3/d) | Water outlet recruitment (%) after the well workover |
| BB2 | 190.00 | 8 | 1099.68 | 1410.24 | 28.24 |
| BB7 | 248.00 | 8 | 1420.32 | 1939.92 | 36.58 |
| BH1 | 174.17 | 8 | 676.00 | 1117.68 | 65.34 |
| GK1 | 268.70 | 8 | 2357.76 | 2563.49 | 8.73 |
| GK3 | 251.10 | 8 | 1709.04 | 2192.83 | 28.31 |
| MH4 | 231.30 | 8 | 1695.36 | 2381.28 | 40.46 |
| MH5 | 201.50 | 8 | 1452.00 | 2324.40 | 60..08 |
| PH2 | 90.00 | 8 | 1002.24 | 1527.60 | 52.42 |
Specific embodiment product embodiments 1
As shown in Figure 1 to Figure 3: a kind of special-purpose cleaning brush is characterized in that: it comprises connecting rod 1, cylinder 2 and brush board 3; Cylinder 2 is installed in the side surface of connecting rod 1, and two brush boards 3 that fit with cylinder 2 side surfaces are installed in the side surface of cylinder 2, and the outside of brush board 3 is installed with bristle 4, and the bristle circular diameter D that bristle 4 constitutes is slightly larger than the interior caliber of filter pipe; Connecting rod 1 one ends are provided with connecting thread 101.Cylinder 2 and brush board 3 preferably steel material are made.Cylinder 2 centers are provided with cylinder hole 201, and cylinder hole 201 two ends and connecting rod 1 welding are fixed as one both.Guaranteeing that can tightly be fixed on the brush board 3 is principle after implanting bristle 4, brush board 3 be provided be used to install the bolt hole 301 of set bolt 5 and be used to implant bristle 4 marshalling plant pore 302.Length 300～the 500mm of steel cylinder 2, according to the diameter of water supply well, the diameter 100～150mm of steel cylinder 2.
Product embodiments 2 as Fig. 4 to shown in Figure 6: a kind of segmentation well-flushing utensil that draws water, it comprises, and the upper end is opened wide, the water inlet pipe 6 of lower end closed, is fixed on two of water inlet pipe 6 tops and bottom and overlaps flange 7; Be provided with more than ten to tens round or disciform inlet openings 601 between water inlet pipe 6 sidewalls, the two cover flange 7; Be fixed with sealing pad 8 between the upper flange 701 of every cover flange 7 and the lower flange 702, flange bolt 11 is fixed together upper flange 701, lower flange 702 and sealing pad 8; 3～5 meters of distances between two sealing pads 8, the external diameter of sealing pad 8 is suitable with water supply well well casing 9 inwalls that are cleaned, flange endoporus 703 and water inlet pipe 6 welding, water inlet pipe 6 upper ends are provided with connecting thread 602.Connecting thread 602 is connected with the gutter that draws water.Sealing pad 8 is thick-layer rubber pads.
Fig. 6 is the utility model and well casing assembly relation schematic diagram, and the water supply well well casing 9 of prior art is threaded with water supply well filter pipe 10 or welds.
A, obtain solution
In being three cubic metres water tank, capacity injects tap water; The sulfamic acid 464.5kg of weighing purity 95% puts into water tank configuration weight percent concentration and is 15% solution 2.5m
3
B, preparation workover tool
Decrement is 9m
3Air compressor machine, high-pressure pump, drilling rod, outlet pipe; Prepare TV down-hole camera system, this TV down-hole camera system is to be produced by IBKA company, and this TV down-hole camera system is a panorama type, and camera lens can rotate by 360 degree; Special-purpose cleaning brush, the segmentation well-flushing utensil etc. that draws water;
C, well workover
C.1 extract pumping equipments such as pump line in the old well, cable, take out foreign material such as wood;
C.2, pumping equipments such as air compressor machine, outlet pipe are installed, are carried out the shaft bottom sediment outflow in the usual way, so that carry out shooting in the well first time;
C.3 slowly insert TV down-hole camera system in the well, carry out in the first time well shooting and check, by TV down-hole camera system record well casing, the filter pipe degree of depth, reducing position, filter pipe chocking-up degree, obstruction kind, well casing or/and whether filter pipe damaged, damaged degree and content such as whether be necessary to repair;
C.4 with high-pressure pump in well, mainly be the sulfamic acid solution that filter pipe position implantation step a is configured, in well, stopped 24 hours, sulfamic acid solution weight percent concentration remains on 3～5% in the retention period well:
C.5 special-purpose cleaning brush connecting rod is connected with drilling rod, the unlatching rig carries out segmentation to the filter pipe block part by the speed of every section 15min and scrubs 8～10 meters of segment lengths; The location segment that will brush toward the last time from the shaft bottom has been scrubbed; The draw water water inlet pipe of utensil of segmentation well-flushing is threaded with gutter, opens rig filter pipe block part district drainage; Suspension content 4.5g/m in the water of discharging
3
C.6 the interior calcium oxychloride that adopts of well is sterilized, and Eusol concentration is by the product description requirement in the well, and Eusol stops in well after 24 hours and extracts out, and chlorine ion concentration reaches the preceding level of sterilization in the survey water.
Embodiment 2a, obtain solution
In being three cubic metres water tank, capacity injects tap water; The calgon 464.5kg of weighing purity 95% puts into water tank configuration weight percent concentration and is 15% solution 2.5m
3
B, preparation workover tool
With embodiment 1;
C, well workover
C.1 with embodiment 1;
C.2 with embodiment 1;
C.3 with embodiment 1;
C.4 with high-pressure pump in well, mainly be the sodium hexametaphosphate solution that filter pipe position implantation step a is configured, in well, stopped 25 hours, the sodium hexametaphosphate solution weight percent concentration remains on 4～5% in the retention period well;
C.5 special-purpose cleaning brush connecting rod is connected with drilling rod, the unlatching rig carries out segmentation to the filter pipe block part by the speed of every section 15min and scrubs 8～10 meters of segment lengths; The location segment that will brush toward the last time from the shaft bottom has been scrubbed; The draw water water inlet pipe of utensil of segmentation well-flushing is threaded with gutter, opens rig filter pipe block part district drainage; Suspension content 3.5g/m in the water of discharging
3
C.6 the interior calcium oxychloride that adopts of well is sterilized, and Eusol concentration is by the product description requirement in the well, and Eusol stops in well after 26 hours and extracts out, and chlorine ion concentration reaches the preceding level of sterilization in the survey water.
A, obtain solution
In being three cubic metres water tank, capacity injects tap water; The calgon 430.8kg of weighing purity 95% puts into water tank configuration weight percent concentration and is 12% solution 3m
3
B, preparation workover tool
With embodiment 1;
C, well workover
C.1 with embodiment 1;
C.2 with embodiment 1;
C.3 with embodiment 1;
C.4 with high-pressure pump in well, mainly be the sodium hexametaphosphate solution that filter pipe position implantation step a is configured, in well, stopped 25 hours, the sodium hexametaphosphate solution weight percent concentration remains on 3～4% in the retention period well;
C.5 special-purpose cleaning brush connecting rod is connected with drilling rod, the unlatching rig carries out segmentation to the filter pipe block part by the speed of every section 20min and scrubs 8～10 meters of segment lengths; The location segment that will brush toward the last time from the shaft bottom has been scrubbed; The draw water water inlet pipe of utensil of segmentation well-flushing is threaded with gutter, opens rig filter pipe block part district drainage; Suspension content 7g/m in the water of discharging
3Do not reach 5g/m
3Standard,
C.6 repeating step c.5; Survey suspension content 5g/m in the water of discharging
3Reach and repair the well designing requirement
C.7 the interior calcium oxychloride that adopts of well is sterilized, and Eusol concentration is by the product description requirement in the well, and Eusol stops in well after 24 hours extract out at least, and chlorine ion concentration reaches the preceding level of sterilization in the survey water.
Claims (1)
1. the method for a cleaning old water-supply well comprises the steps:
A, obtain solution
Inject tap water in the water tank; Press water tank volume, weighing calgon (N
aPO
3)
6Or sulfamic acid H
3NO
3S, the weight percent concentration of configuration solution is 10～15% in the water tank;
B, preparation workover tool
Decrement is 9～15m
3Air compressor machine, high-pressure pump, drilling rod, outlet pipe; Prepare TV down-hole camera system, this TV down-hole camera system is a panorama type, and camera lens can rotate by 360 degree; Special-purpose cleaning brush, the segmentation well-flushing utensil that draws water;
C, well workover
C.1 extract pump line, cable in the old well, take out wooden;
C.2, air compressor machine, outlet pipe are installed, are carried out the shaft bottom sediment outflow in the usual way, so that carry out shooting in the well first time;
C.3 slowly insert TV down-hole camera system in the well, carry out in the first time well shooting and check, by TV down-hole camera system record well casing, the filter pipe degree of depth, reducing position, filter pipe chocking-up degree, obstruction kind, well casing or/and whether filter pipe damaged, damaged degree and whether be necessary to repair;
C.4 the calgon that is configured with the filter pipe position implantation step a of high-pressure pump in well/or sulfamic acid solution, in well, stopped 24 hours to 26 hours, calgon in the retention period well/or sulfamic acid solution weight percent concentration remain on 3%～5%;
C.5 special-purpose cleaning brush connecting rod is connected with drilling rod, the unlatching rig carries out segmentation to the filter pipe block part by the speed of every section 15～30min and scrubs 8～10 meters of segment lengths; The location segment that will brush toward the last time from the shaft bottom has been scrubbed; The draw water water inlet pipe of utensil of segmentation well-flushing is threaded with gutter, opens rig filter pipe block part district drainage; Suspension content is less than 5g/m in the water of discharging
3Till;
C.6TV the down-hole camera system is carried out shooting inspection in the well second time, and whether the filter pipe position also exists obstruction in the manhole, reaching under the situation of repairing the well designing requirement, carries out step c 7; Otherwise repeating step c.4 extremely c.5; Repair the well designing requirement until reaching;
C.7 the interior calcium oxychloride that adopts of well is sterilized, and Eusol concentration is by the product description requirement in the well, and Eusol stops in well after 24 hours extract out at least, and chlorine ion concentration reaches the preceding level of sterilization in the survey water;
Wherein the described special-purpose cleaning brush of step b comprises connecting rod (1), cylinder (2) and brush board (3); Described cylinder (2) is installed in the side surface of described connecting rod (1), described brush board (3) is installed in the side surface of described cylinder (2), the outside of described brush board (3) is installed with bristle (4), and the bristle circular diameter D that described bristle (4) constitutes is slightly larger than the interior caliber of filter pipe; Described connecting rod (1) one or both ends are provided with connecting thread (101);
Wherein the described segmentation well-flushing of the step b utensil that draws water comprises that the upper end is opened wide, the water inlet pipe (6) of lower end closed, is fixed on two of described water inlet pipe (6) top and bottom and overlaps flange (7); Be provided with more than ten to tens inlet openings (601) between described water inlet pipe (6) sidewall, the two described flange of cover (7); Be fixed with sealing pad (8) between the upper flange (701) of the described flange of every cover (7) and the lower flange (702), flange bolt (11) is fixed together described upper flange (701), described lower flange (702) and described sealing pad (8); The external diameter of described sealing pad (8) is suitable with water supply well well casing (9) inwall that is cleaned, and described water inlet pipe (6) upper end is provided with connecting thread (602).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810147753XA CN101418582B (en) | 2008-12-03 | 2008-12-03 | Method and special tool for cleaning old water-supply well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810147753XA CN101418582B (en) | 2008-12-03 | 2008-12-03 | Method and special tool for cleaning old water-supply well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101418582A CN101418582A (en) | 2009-04-29 |
| CN101418582B true CN101418582B (en) | 2010-06-02 |
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ID=40629569
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810147753XA Expired - Fee Related CN101418582B (en) | 2008-12-03 | 2008-12-03 | Method and special tool for cleaning old water-supply well |
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|---|---|
| CN (1) | CN101418582B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483026A (en) * | 2020-11-06 | 2021-03-12 | 核工业北京化工冶金研究院 | Mechanical and chemical combined well flushing method for ground-leaching U-shaped horizontal well |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1111064A (en) * | 1993-06-11 | 1995-11-01 | 帕尔公司 | Method and apparatus for oil or gas well cleaning |
| CN1121981A (en) * | 1993-06-16 | 1996-05-08 | 井流技术有限公司 | Well wall cleaning tool with scrap element |
| EP0778393A2 (en) * | 1995-12-07 | 1997-06-11 | DANKWART KLEIN ERDBOHRUNGEN GmbH & Co., BRUNNENBAU KG | Method and apparatus for maintaining the performance of new water wells and for cleaning and regeneration of excisting water wells by means of ultrasound |
| US6142232A (en) * | 1998-07-15 | 2000-11-07 | Layne Christensen Company | Method and apparatus for cleaning wells |
-
2008
- 2008-12-03 CN CN200810147753XA patent/CN101418582B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1111064A (en) * | 1993-06-11 | 1995-11-01 | 帕尔公司 | Method and apparatus for oil or gas well cleaning |
| CN1121981A (en) * | 1993-06-16 | 1996-05-08 | 井流技术有限公司 | Well wall cleaning tool with scrap element |
| EP0778393A2 (en) * | 1995-12-07 | 1997-06-11 | DANKWART KLEIN ERDBOHRUNGEN GmbH & Co., BRUNNENBAU KG | Method and apparatus for maintaining the performance of new water wells and for cleaning and regeneration of excisting water wells by means of ultrasound |
| US6142232A (en) * | 1998-07-15 | 2000-11-07 | Layne Christensen Company | Method and apparatus for cleaning wells |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2001-323447A 2001.11.22 |
| JP特开2003-105812A 2003.04.09 |
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| Publication number | Publication date |
|---|---|
| CN101418582A (en) | 2009-04-29 |
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