EP1327053A2 - Verfahren und abpumpmittel zur verbesserung der wasserzufuhr zu einer quelle oder einem wassergewinnungsbrunnen - Google Patents
Verfahren und abpumpmittel zur verbesserung der wasserzufuhr zu einer quelle oder einem wassergewinnungsbrunnenInfo
- Publication number
- EP1327053A2 EP1327053A2 EP01988816A EP01988816A EP1327053A2 EP 1327053 A2 EP1327053 A2 EP 1327053A2 EP 01988816 A EP01988816 A EP 01988816A EP 01988816 A EP01988816 A EP 01988816A EP 1327053 A2 EP1327053 A2 EP 1327053A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- well
- water
- pipe
- carbon dioxide
- earth
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005086 pumping Methods 0.000 title claims abstract description 18
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 31
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000003673 groundwater Substances 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 239000010419 fine particle Substances 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims description 16
- 238000003809 water extraction Methods 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 230000002706 hydrostatic effect Effects 0.000 claims description 2
- 239000007790 solid phase Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 11
- 230000008014 freezing Effects 0.000 description 5
- 238000007710 freezing Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000004927 clay Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 235000013405 beer Nutrition 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002699 waste material Substances 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
- E21B37/08—Methods or apparatus for cleaning boreholes or wells cleaning in situ of down-hole filters, screens, e.g. casing perforations, or gravel packs
-
- 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
- E21B36/001—Cooling 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
- E21B43/25—Methods for stimulating production
- E21B43/255—Methods for stimulating production including the injection of a gaseous medium as treatment fluid into the formation
Definitions
- the invention relates to a method for improving the water supply from a water-containing layer of earth to a source or a well located in the ground, in particular a water well, which source or well consists of a borehole which extends into the aforementioned layer of earth or into the groundwater, first the well or a part of the well is closed by shut-off means so that the lower part of the well is hermetically closed at the top and can be pressurized, which shut-off means contain a shut-off device which is fastened on or in the casing pipe or riser pipe of the well and this hermetically seals which shut-off device contains an inflow pipe in order to be able to feed a substance (such as a gas, a liquid or a solid substance) under a desired pressure into the lower part of the well, which is closed at the top.
- a substance such as a gas, a liquid or a solid substance
- Water is pumped out of water-containing layers of earth through wells or springs. Over time, the water output from water wells always decreases because the supply to the well gradually becomes muddy.
- the wells or wells may be silted up mechanically, biologically or chemically, or a combination of these.
- the sludge may have been caused by particles carried in the water, by the growth of bacteria or by the deposition of, for example, lime, iron or other chemical substances or compounds, or a combination of these factors.
- Another method of improving water flow to wells is to force new openings near the bottom of the well pipe by dynamite-creating new cracks in the layer of earth in the hope that the well's performance will increase.
- This method is used for dry wells that are in a rocky area Soil and which have dried out.
- the use of dynamite often results in the well being damaged in such a way that it is no longer usable. In any case, such a method cannot be used with a large number of wells such as water extraction wells.
- the object of the present invention is a method by which it is possible to increase the yield of an existing well, the yield of which has decreased over time, e.g. was halved, again to enlarge and in particular a method for optimizing the inflow of water from a water-containing layer of earth to a well, or from groundwater to a water extraction well, in which the quality of the water pumped out did not deteriorate after cleaning the well.
- the object of the invention is achieved with the method described at the beginning by first bringing the shut-off means into the well, so that the feed pipe is so deep in the well that it opens at a depth of the well, which lies in the water-containing layer of earth, by then the shut-off device is attached in an airtight manner in or on the well by subsequently introducing gaseous carbon dioxide through the inflow pipe into the lower part of the well, under a certain pressure which is above the pressure of the hydrostatic pressure prevailing at the outflow opening of the inflow pipe until the well is filled with gas to below the outflow opening of the inflow pipe, - by subsequently adding carbon dioxide through the inflow pipe under the same previously specified certain pressure for a certain period of time, as a result of which under the near the end of the pipe - the pressure and the prevailing temperature, the water located near the end of the pipe and the layer of earth gradually change to the solid phase over a certain distance from the outlet opening of the inflow pipe, that is to say freeze, by subsequently taking the pressure off the well and then,
- a gas or a liquid gas and preferably first liquid nitrogen gas and then carbon dioxide under a certain pressure is then introduced into the well via this shut-off means in order to freeze the water in the well and the earth layer surrounding the well, and then to keep the gas or liquefied gas introduced into the well under a desired pressure for a certain period of time and then to rapidly reduce the pressure on the well, as a result of which the introduced gas cools down adiabatically, the water - which is in and around the well Earth layer is located, further strongly below it cools down to freezing point so that as much of the water as possible in the well and around the well freezes.
- the well After the well is filled to a desired height with solid carbon dioxide, the well is left for some time until the solid carbon dioxide is sublimated, so that due to the low temperature of the solid carbon dioxide, the water which is in the well and in the adjacent part of the The earth layer surrounding the well is as far as possible from the well in the earth layer is frozen.
- Both methods intend to freeze the water, which is in the well pipe and in the soil surrounding the well pipe, as far as possible from the well in the water-containing layer of earth, so that new openings and cracks are created in the layer of earth, so that the water from the layer of earth again can flow to the well.
- Water that freezes expands. So, after the water in the well is frozen, the water that is there will freeze as the environment cools further and deeper. As soon as a lot of water is then enclosed and then freezes, freezing this amount of water exerts enormous forces on the surrounding earth layer, which enlarges existing openings and displaces surrounding parts of the earth layer.
- the water should contain as little gas as possible so that the gas bubbles in the water do not reduce the forces that occur.
- the temperature which can be maintained in the well for a certain time during the sublimation of the carbon dioxide in the well is at least below the triple point of carbon dioxide, namely at -60 ° Celsius.
- this method is therefore particularly suitable for use in springs and water extraction wells, the water yield of which has decreased, for example has been halved, and at where the groundwater is sucked in from a water-containing layer of soil over several dozen meters of depth difference.
- the invention further relates to pumping means for removing, from a water well, loose particles suspended in water, for example, or from products dissolved in water, both from the water-containing earth layer present around the water fountain and from the near-water layer in the well existing filter means,
- pumping means consist of a suction pipe, at the near the lower end of two parallel to each other and at a mutual distance perpendicular to the suction pipe, flat plate-shaped devices, the outer diameter of which corresponds approximately to the inner diameter of the riser pipe, so that a closed Space is formed, which is bounded laterally by the wall of the riser pipe and both on the top and on the bottom by the two plate-shaped devices, which suction pipe has one or more inflow openings, which are located in that part of the suction pipe, which are in the closed There is space between the two plate-shaped devices and which device contains pumping means which can discharge the water from the well via the suction pipe.
- the pumping means in the suction pipe near the closed space, but above the inflow openings of the suction pipe contain a supply for gas, or because an inflow pipe for gas is arranged in the suction pipe, which opens into the suction pipe, close but above the inflow openings of the suction pipe, is achieved that the water with the particles is discharged very quietly upwards by the air bubble flow and also the particles in suspension remain in suspension.
- a pump can possibly be added.
- Fig. 1 shows a water extraction well in cross section
- Figures 2 to 6 show a series of phases of the method for improving the inflow of water to the well
- FIG. 7 shows the well from FIG. 1 in which pumping means according to the invention are shown.
- FIG. 1 shows a cross section of a source or a water extraction well 1.
- This well 1 consists of a borehole 2 with a diameter of 600 mm, which extends to a depth of a good 80 meters below the earth's surface 3.
- a 4 meter thick layer 5 of clay is attached and on top of it a riser pipe 6 made of PVC with a diameter of 250 mm.
- the foot of the riser consists of a sand trap 7, which is closed at the bottom and the standing wall 8 of which is approximately 1 meter.
- part 9 of the wall 8 of the riser is provided with filter slots or perforations 10 with a diameter of 0.75 mm as a filter or sieve through which the water can flow into the riser 6, while the rest of the upper one Part 11 of the riser pipe 6 consists of a wall 12 impermeable to water.
- the borehole is filled with special filter grade filter gravel, the diameter of which is between 1.0 mm and 1.6 mm, which together with the filter part 9 of the riser 6 forms the filter 14 for the inflowing water.
- the riser pipe is surrounded by a certain type of clay 15, which thereby forms an impenetrable layer for water and in the extension of the impenetrable bottom layer 16, which delimits the upper side of the water-containing earth layer 17.
- Tab The borehole is filled with gravel 18 with a diameter between 2.0 and 5.0 mm, 38 meters to approximately 6 meters below the surface. A layer of clay 19 of 3 meters is then applied and the borehole is filled with gravel 20 up to the top.
- FIG. 2 schematically shows the same water extraction well from FIG. 1, the riser pipe being closed by a shut-off device 21, also known under the name “Packer”, through which the feed pipe 22 protrudes, while there is water in the riser pipe 6 both above and below the shut-off device.
- the supply pipe 22 for the carbon dioxide is so deep in the water extraction well or well 1 that the outflow opening 23 of the supply pipe 22 is located at the desired depth in the water extraction well 1.
- FIG. 3 shows schematically the same water extraction well 1 while carbon dioxide is being fed into the well, the temperature of the carbon dioxide gas not being so important since the water in the well has a high thermal output and will only freeze after the water in the well has been gaseous Carbon dioxide was replaced.
- FIG. 4 schematically shows the same water extraction well after the water has been pressed below the outflow opening 23 and before the well is frozen. Schematically, a drawn line 24 roughly shows which part of the well and the surrounding filter 14 has been filled with the gas, FIG.
- FIG. 5 shows the same water extraction well after carbon dioxide, the temperature of which has been introduced into the lower closed part of the water extraction well for a long time Freezing point of water and before the well is thawed, schematically with a dashed line Line 25 shows the part of the well, the surrounding filter 14 and the surrounding water-containing earth layer 17, which is below the freezing point of the water before the well is thawed.
- FIG. 6 schematically shows the same water extraction well, the method being used at a different depth in the well and the same state being shown as in FIG. 5.
- FIG. 7 shows the same well as shown in FIG. 1, with pumping means 26 being introduced in the well for the gradual, gradual pumping out of the water with the substances dissolved therein and the particles in suspension from the filter 14 surrounding the well and the water-containing earth layer 17.
- the pumping means consist of a suction pipe 27 on which near the lower end two flat plate-shaped devices 28 and 29 fastened parallel to one another and at a mutual distance from one another perpendicularly, the outer diameter of which corresponds approximately to the inner diameter of the riser pipe 6, so that a closed space is thus formed, which is delimited laterally by the wall of the riser tube 6 and at the top by one plate-shaped device and at the bottom by the other plate-shaped device.
- the suction pipe 27 has a series of inflow openings 30.
- a supply 31 for gas is provided in the suction pipe above the plate-shaped devices, with which it is possible to very gradually discharge water with particles suspended.
- the part of the well 1 above the plate-shaped device 28 and the part of the well 1 below the plate-shaped device 29 are connected to one another by a tube 32 so that the pumping means 26 can be easily moved in the riser pipe of the well.
Landscapes
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Earth Drilling (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1016358 | 2000-10-09 | ||
| NL1016358A NL1016358C2 (nl) | 2000-10-09 | 2000-10-09 | Werkwijze en afpompmiddelen voor het verbeteren van de toevoer van water naar een bron of waterwinput. |
| PCT/EP2001/011671 WO2002035061A2 (de) | 2000-10-09 | 2001-10-09 | Verfahren und abpumpmittel zur verbesserung der wasserzufuhr zu einer quelle oder einem wassergewinnungsbrunnen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1327053A2 true EP1327053A2 (de) | 2003-07-16 |
| EP1327053B1 EP1327053B1 (de) | 2005-12-14 |
Family
ID=19772213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01988816A Expired - Lifetime EP1327053B1 (de) | 2000-10-09 | 2001-10-09 | Verfahren und abpumpmittel zur verbesserung der wasserzufuhr zu einer quelle oder einem wassergewinnungsbrunnen |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1327053B1 (de) |
| AT (1) | ATE313002T1 (de) |
| AU (1) | AU2002220606A1 (de) |
| DE (1) | DE50108403D1 (de) |
| NL (1) | NL1016358C2 (de) |
| WO (1) | WO2002035061A2 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2259262A (en) * | 1940-11-12 | 1941-10-14 | Layne & Bowler Inc | Means for well cleaning |
| US4580629A (en) | 1984-12-27 | 1986-04-08 | Igor Jaworowsky | Method and apparatus for water flow stimulation in a well |
| US4534413A (en) | 1984-12-27 | 1985-08-13 | Igor Jaworowsky | Method and apparatus for water flow stimulation in a well |
| US4763728A (en) * | 1987-07-16 | 1988-08-16 | Lacey James J | Jet-type well screen cleaner |
| US5394942A (en) | 1993-11-02 | 1995-03-07 | Aqua Freed Of New York, Inc. | Method for stimulation of liquid flow in a well |
| US6047773A (en) * | 1996-08-09 | 2000-04-11 | Halliburton Energy Services, Inc. | Apparatus and methods for stimulating a subterranean well |
-
2000
- 2000-10-09 NL NL1016358A patent/NL1016358C2/nl not_active IP Right Cessation
-
2001
- 2001-10-09 EP EP01988816A patent/EP1327053B1/de not_active Expired - Lifetime
- 2001-10-09 DE DE50108403T patent/DE50108403D1/de not_active Expired - Fee Related
- 2001-10-09 WO PCT/EP2001/011671 patent/WO2002035061A2/de not_active Ceased
- 2001-10-09 AU AU2002220606A patent/AU2002220606A1/en not_active Abandoned
- 2001-10-09 AT AT01988816T patent/ATE313002T1/de not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0235061A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50108403D1 (de) | 2006-01-19 |
| AU2002220606A1 (en) | 2002-05-06 |
| ATE313002T1 (de) | 2005-12-15 |
| WO2002035061A3 (de) | 2002-09-06 |
| NL1016358C2 (nl) | 2002-04-16 |
| EP1327053B1 (de) | 2005-12-14 |
| WO2002035061A2 (de) | 2002-05-02 |
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