EP0962624A1 - Vorrichtung zur Herstellung und Regeneration von Brunnen - Google Patents
Vorrichtung zur Herstellung und Regeneration von Brunnen Download PDFInfo
- Publication number
- EP0962624A1 EP0962624A1 EP98830348A EP98830348A EP0962624A1 EP 0962624 A1 EP0962624 A1 EP 0962624A1 EP 98830348 A EP98830348 A EP 98830348A EP 98830348 A EP98830348 A EP 98830348A EP 0962624 A1 EP0962624 A1 EP 0962624A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slider
- casing
- tools
- head
- well
- 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.)
- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 claims 1
- 238000001914 filtration Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000011796 hollow space material Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910000278 bentonite Inorganic materials 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000001033 granulometry Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000005325 percolation Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 235000012206 bottled water Nutrition 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/14—Methods or devices for cementing, for plugging holes, crevices or the like for cementing casings into boreholes
-
- 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/11—Perforators; Permeators
- E21B43/112—Perforators with extendable perforating members, e.g. actuated by fluid means
Definitions
- the present invention relates to a device for making or regenerating water wells.
- the construction of water wells involves the carrying out of a number of operations in a precise order which, with the currently available equipment, comprise the preparation of the fore well, the execution of the borehole and the lining of the borehole with blind pipes and filtering pipes.
- filtering pipes windowed pipes are used which are available on the market and are industrially manufactured in series, with a standardized filtering port composed of slots delimited by the wall of the pipe and by the edges of portions of the wall which are raised with respect to its perimetral profile.
- the cross section of the passage of standard windowed pipes is normally smaller than that which for each individual case would be optimal, thus decreasing the amount of water the well can deliver.
- a borehole of desired depth for the well is formed in successive steps, by cementing a first borehole and then making a new borehole in the cemented one with a smaller drill bit reaching a greater depth; the new borehole is then also cemented and so on, until reaching the desired depth.
- the cementing carried out in this manner does not, however, ensure adequate isolation, since, as a result of the vibrations induced by the formation of the various boreholes, the cement lining can yield or crack.
- the object of the present invention is to provide a device for making or regenerating water wells which makes it possible to avoid the above-mentioned inconveniences of the known techniques.
- a particular object of the present invention is to provide a device of the above-mentioned type which makes it possible to form the filtering windows, with an aperture suited to the average granulometry of the terrain, directly on the already installed casing, and to ensure, in any case, the correct placement of the filtering surface of the pipe in the aquifer stratum as well as a filtering cross section of optimal size.
- a further object of the present invention is to provide a device of the above-mentioned type which makes it possible to deliver a cementitious slurry or drainage materials to preestablished regions surrounding the filtering section of the casing, and allows for the reduced use of said materials and producing technically perfect results.
- a further object of the present invention is to provide a device of the above-mentioned type which makes it possible to regenerate existing wells which are either on their way to being exhausted due to a variation of the level of the aquifer formation or which have been abandoned because of incorrect placement of the filtering section or breakage or damage of the casing.
- the device for making or regenerating water wells whose main feature is that it comprises a operating head with angularly equispaced radial seats in which respective punch tools for forming holes, windows or shaped cuts in the wall of the casing are slidingly housable, means for driving said operating head from the mouth of the well to a position at a preestablished depth inside the casing so that the radial seats are orthogonal to the wall of the casing itself and operating means integral with the operating head to axially move the punch tools to and from the wall of the casing, within the respective radial seats.
- Different types of punch tools can be mounted in an interchangeable way on the operating head.
- Said tools are suited in particular to form filtering windows on the casing, or to form passages through the casing for dispensing cementitious slurry, drainage gravel or other useful materials to the hollow space between the casing and the wall of the hole.
- the punch tools are moved by means of a slider which is slidable inside the operating head in a direction orthogonal to the axes of the tools.
- the tools are slidingly connected to the slider according to inclined directions with respect to the sliding axis of the slider and converge at a common point on said axis, so that an axial movement of the slider produces a corresponding axial sliding of the punches in an orthogonal direction.
- the device according to the invention is generally indicated with 1 in figure 1 and comprises a substantially cylindrical operating head 2, on the side surface of which radial tubular seats 3 are formed which are spaced at equal angular distance from one another, as well as an actuating device 5 axially extending from the operating head and fixed to head 2 by means of respective connection flanges 2a and 5a.
- Actuator 5 is in turn axially fixed to a operating rod 6 by means of respective connection flanges 5b and 6a.
- the device according to the invention is shown in greater detail in figure 2 wherein it is illustrated inside a casing 7 of a well.
- operating head 2 it is composed of a tubular body 8 coaxial to the axis of the device, connected at one end to actuator 5 and having in correspondence with the other end an annular expansion 9 wherein radial seats 3 are formed, communicating with the inside of tubular body 8.
- the annular expansion 9 has a tubular housing 4 which is coaxial with, and of equal internal diameter to, tubular body 8 and is fixed to annular expansion 9 through a flanged end 4a.
- a slider 10 integral with the piston rod of actuator 5 is slidingly mounted inside tubular body 8.
- the actuator is of a double-acting type, ducts 11 and 12, respectively for the feeding and the discharge of an actuating fluid, being provided.
- slider 10 can slide in both directions inside tubular body 8 and in housing 4 which is aligned thereto, between two run-end positions, a first one determined by its abutment with flange 2a and a second one by its abutment with an adjustment screw 13 located on the bottom of housing 4, by means of which it is possible to sharply adjust the maximum run of slider 10.
- slider 10 has angularly spaced longitudinal grooves 14 on its surface (in figures 4 to 6 only one groove is indicated for simplicity). Each groove 14 increases in depth from one end of slider 10 to the other, and a substantially T-shaped channel 15 is formed on the bottom of each groove.
- the number of grooves 14 formed along slider 10 depends on the diameter of the slider itself and, correspondingly, of operating head 2. In any case, the number of grooves 14 is equal to the number of radial seats 3 formed in operating head 2, and each groove 14 is formed in correspondence with one of said radial seats 3.
- special punch tools of different forms, in accordance with the function they have to perform, are slidingly mounted.
- One of these tools is shown in a longitudinal view in figures 9 and 10 and is indicated at 16. It is designed to form special windows on the surface of the casing and, for that purpose, it has an oblique cutting end 16a, whereas the opposite end has a substantially T-shaped protrusion 17 with the same cross section as channel 15 formed on the bottom of grooves 14 of slider 10.
- T-shaped protrusion 17 has the same inclination as the bottom of grooves 14, so that, engaging it inside a corresponding channel 15, tool 16 is restrained to slide with respect to slider 10. Since tool 16 is in turn forced to slide inside corresponding radial seat 3, and as a consequence of the inclination of channels 15 with respect to the axis of slider 10, it slides forward and backward in respective radial seat 3 following a corresponding axial sliding of slider 10 inside tubular body 8 of operating head 2 driven by actuator device 5.
- two flattened portions 31 are formed on diametrically opposite sides, reducing the cross section of the tool to a width equal to that of groove 14 in order to allow it to slide inside the groove.
- the axial length of said flattened portions 31 is at least equal to the maximum depth of groove 14 in order to prevent size interferences during the sliding of slider 10.
- Figure 3 shows an enlarged view of a portion of operating head 2 on which a hollow tool 18 is mounted, usable for the cementing of the well as will be described hereinafter.
- the use of hollow tool 18 requires that operating head 2 has a couple of annular chambers 19 and 20 formed above annular expansion 9 and coaxial to tubular body 8 of operating head 2.
- the two chambers 19 and 20 communicate by means of ducts 21 and 22 with respective feeding means of water and fluid cementitious slurry external to the well.
- the run carried out by tool 16 or 18 is determined by the inclination of channel 15 and by the run of slider 10.
- the maximum extension of the tool out of corresponding seat 3 must allow the tool to carry out the desired operation (hole, window or cut of various types) on the wall of casing 7.
- slider 10 progressively enters housing 4 until it reaches the bottom end of its stroke which is determined by adjustment screw 13.
- Tool 18, shown in figure 3 makes ballasting and cementing possible as well as the passage of water or any other material necessary to work in the hollow space between the casing and the hole.
- two radial passages 23 and 24 are formed which, when the tool is in its position of maximum extension from seat 3, are aligned with corresponding discharge ducts 25 and 26 formed on annular expansion 9 of operating head 2 in correspondence with chambers 19 and 20. In this way, the chambers are put in communication with internal chamber 27 of tool 18.
- tool 18 is made in two portions screwed to one another to allow for all the lathe machining of the internal surfaces.
- internal chamber 27 of tool 18 has a widened intermediate portion filleted with the two end portions of smaller width by means of frusto-conical wall portions.
- a spherical plug 28 having a diameter substantially equal to that of the portions of chamber 27 with a smaller diameter closes the communication between the two chambers for water 19 and cementitious slurry 20, with plug 28 being held in position by means of a flexible laminar member 29 protruding from the wall of chamber 27 in correspondence with the point of connection between the two halves of tool 18.
- operating rod 6 is of a tubular form so that it can function as a manifold for the material such as the pebble gravel to be fed to the operating head.
- the device according to the present invention makes it possible to carry out in situ a series of operations for the realization of a well which is currently impossible according to prior art methods, while drastically decreasing costs and construction time and significantly increasing the possibilities of using the well for the purposes for which it is intended.
- the procedure for building a well can be the following:
- the device according to the present invention makes it possible, therefore, to carry out the following operations:
- a operating head with six tools is considered particularly adequate, since it allows to open six windows at a time and a small angular or axial shifting is sufficient to prepare the device for the forming of six more windows adjacent to the previous ones or at a different level from the same.
- a goniometer and a measuring chord are associated to the device according to the invention making it possible to carry out the above-mentioned movements with the desired precision.
- a particularly advantageous feature of the device according to the invention consists in its high operational speed both in the execution of building works as well as in the restoration of wells. In fact, it is characterized by the fact that it makes it extremely easy to access the hollow space between the casing and the borehole wall to carry out necessary operations as well as to quickly close the passage again. In this way, it is possible to restore the quo ante state of the stratification broken during the formation of the hole and, therefore, to inhibit the phenomenon of percolation and intercommunication between the strata which is the main cause of pollution.
- the device according to the present invention can be easily disassembled for normal maintenance and substitution of tools. While a circular cross section of the operating head 2 is the easiest to conceive of, it is clear that, for the purposes of the invention, a polygonal cross section can also be used.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98830348A EP0962624A1 (de) | 1998-06-04 | 1998-06-04 | Vorrichtung zur Herstellung und Regeneration von Brunnen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98830348A EP0962624A1 (de) | 1998-06-04 | 1998-06-04 | Vorrichtung zur Herstellung und Regeneration von Brunnen |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0962624A1 true EP0962624A1 (de) | 1999-12-08 |
Family
ID=8236675
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98830348A Withdrawn EP0962624A1 (de) | 1998-06-04 | 1998-06-04 | Vorrichtung zur Herstellung und Regeneration von Brunnen |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0962624A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002090711A3 (en) * | 2001-05-04 | 2003-01-09 | Weatherford Lamb | Combined perforation and cement retainer tool for plugging a wellbore |
WO2012069634A1 (en) * | 2010-11-26 | 2012-05-31 | Welltec A/S | Downhole punch component |
DK201500557A1 (en) * | 2015-09-23 | 2017-04-18 | Estate 2010 Aps | Method and tools for sealing of annulus between borehole and well casing. |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE277802C (de) * | ||||
US1785419A (en) * | 1928-04-15 | 1930-12-16 | Roscoe Moss Company | Well-casing perforator |
US1789995A (en) * | 1926-11-03 | 1931-01-27 | Barkis Bruce | Casing cutting and pulling tool |
US2381929A (en) * | 1940-09-06 | 1945-08-14 | Schlumberger Marcel | Well conditioning apparatus |
US2638801A (en) * | 1948-06-21 | 1953-05-19 | Ralph J Klaasen | Casing perforator |
US4158388A (en) * | 1977-06-20 | 1979-06-19 | Pengo Industries, Inc. | Method of and apparatus for squeeze cementing in boreholes |
US4640362A (en) * | 1985-04-09 | 1987-02-03 | Schellstede Herman J | Well penetration apparatus and method |
-
1998
- 1998-06-04 EP EP98830348A patent/EP0962624A1/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE277802C (de) * | ||||
US1789995A (en) * | 1926-11-03 | 1931-01-27 | Barkis Bruce | Casing cutting and pulling tool |
US1785419A (en) * | 1928-04-15 | 1930-12-16 | Roscoe Moss Company | Well-casing perforator |
US2381929A (en) * | 1940-09-06 | 1945-08-14 | Schlumberger Marcel | Well conditioning apparatus |
US2638801A (en) * | 1948-06-21 | 1953-05-19 | Ralph J Klaasen | Casing perforator |
US4158388A (en) * | 1977-06-20 | 1979-06-19 | Pengo Industries, Inc. | Method of and apparatus for squeeze cementing in boreholes |
US4640362A (en) * | 1985-04-09 | 1987-02-03 | Schellstede Herman J | Well penetration apparatus and method |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002090711A3 (en) * | 2001-05-04 | 2003-01-09 | Weatherford Lamb | Combined perforation and cement retainer tool for plugging a wellbore |
US6595289B2 (en) | 2001-05-04 | 2003-07-22 | Weatherford/Lamb, Inc. | Method and apparatus for plugging a wellbore |
GB2393198A (en) * | 2001-05-04 | 2004-03-24 | Weatherford Lamb | Combined perforation and cement retainer tool for plugging a wellbore |
GB2393198B (en) * | 2001-05-04 | 2005-02-23 | Weatherford Lamb | Method and apparatus for plugging a wellbore |
WO2012069634A1 (en) * | 2010-11-26 | 2012-05-31 | Welltec A/S | Downhole punch component |
CN103228863A (zh) * | 2010-11-26 | 2013-07-31 | 韦尔泰克有限公司 | 井下冲压部件 |
RU2592001C2 (ru) * | 2010-11-26 | 2016-07-20 | Веллтек А/С | Компонент скважинного пробойника |
AU2016200992B2 (en) * | 2010-11-26 | 2017-07-06 | Welltec A/S | Downhole punch component |
US9976368B2 (en) | 2010-11-26 | 2018-05-22 | Welltec A/S | Downhole punch component |
DK201500557A1 (en) * | 2015-09-23 | 2017-04-18 | Estate 2010 Aps | Method and tools for sealing of annulus between borehole and well casing. |
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