US3543854A - Filtering pipe for well - Google Patents
Filtering pipe for well Download PDFInfo
- Publication number
- US3543854A US3543854A US767672A US76767268A US3543854A US 3543854 A US3543854 A US 3543854A US 767672 A US767672 A US 767672A US 76767268 A US76767268 A US 76767268A US 3543854 A US3543854 A US 3543854A
- Authority
- US
- United States
- Prior art keywords
- wall
- pipe
- section
- support elements
- 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.)
- Expired - Lifetime
Links
- 238000001914 filtration Methods 0.000 title description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 241000237970 Conus <genus> Species 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004636 vulcanized rubber Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/082—Screens comprising porous materials, e.g. prepacked screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/111—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
- B01D29/54—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2101/00—Types of filters having loose filtering material
- B01D2101/005—Types of filters having loose filtering material with a binder between the individual particles or fibres
Definitions
- the present invention relates to filtering pipes or casings for artesian wells.
- Such casings may consist of such granular materials as gravel bonded together by such adhesives as synthetic resin or vulcanized rubber, and may be reinforced with suitable support elements to prevent bending.
- Artesian wells are usually constructed by first sinking a shaft of sufficient diameter, than placing a slitted filter pipe into the shaft, and finally pouring gravel between the shaft wall and the pipe. Although relatively. simple, building of deep wells of this type is relatively difficult and requires expert labor. For this reason, a variety of prefabricated filtering pipes for wells have been proposed. It is an object of this invention to provide an improved filter pipe section for well casings.
- This object is accomplished by embedding a plurality of elongated support elements in the tubular wall of the pipe, with the support elements extending parallel to the axis of the pipe and being uniformly distributed within the wall. This provides minimal dimensioning and maximum filtering effect.
- FIG. 1 is a perspective side view of an artesian well filter pipe
- FIGS. 2 to 4 are cross sections of the wall of the pipe showing different embodiments of support elements.
- the filter pipe is shown to comprise filter pipe section 1 having end flanges 2 to enable the pipe section 1 to be attached to like pipe sections fonning the filter pipe of an artesian well.
- each filter pipe section may be relatively long, requiring only a few flange connections between adjacent sections even in a relatively deep well.
- the tubular wall 4 of the filter pipe sections consists of a water permeable, bonded mass of gravel wherein the elongated support elements 3 are embedded, i.e. the wall is not constituted by support elements carrying filter plates therebetween as has been conventional.
- each filter pipe section is a self-supporting filter pipe consisting of a suitable granular material, such as gravel, which is bonded by a suitable adhesive substance, such as a synthetic resin or vulcanizable rubber, to form a water permeable wall.
- a suitable granular material such as gravel
- a suitable adhesive substance such as a synthetic resin or vulcanizable rubber
- the elongated support elements 4 are of T-shaped cross section, being so embedded in the pipe wall that the cross bar 9 of each T-section is flush with the outer surface 5 of the wall while the other bar of the T-section points inwardly towards the axis of the pipe section, see FIG. 4.
- Extending the other T-section bar of the support elements substantially to the center line 6 of the pipe section wall is particularly advantageous because the flow section tapers a the sup e minimum towards the inner surface 11 of the wall and the pipe axis (see broken line conus in FIG. 4). This causes the radially extending section 11 behind the support elements to have a maximum extension.
- FIG. 2 shows a support element 7 of substantially square cross section, with the flow lines again indicated in broken lines.
- FIG. 3 shows another advantageous form of a support element 8 of elongated, rectangular cross section. These elements are radially arranged withing the pipe section wall, the center line 6 of the wall substantially bisecting the length of rt elements. In a mbodiments, the support elements are completely, or
- the filtering wall and its support constitutes a unitary tubular body, the built-in sup port elements serving to prevent bending of the filtering mass in any direction. Outward bending is prevented by the soil surrounding the pipe section.
- the support elements may be relatively small since, being parallel to the filter pipe line, they need to support only the tensile load and are not subjected to a bending element.
- the filtering mass of the wall and the support elements complement each other in supporting the loads to which the pipe sections are subjected, the relatively small section of the support elements correspondingly increasing the cross section of the water permeable filter wall.
- a pipe section for a filtering pipe for a well comprising:
- a water permeable tubular wall having an axis and comprised of gravel bonded by a synthetic resin or vulcanizable rubber adhesive;
Description
United States Patent lnventor Wilhelm Degen Zeppelinallee 89, Frankfurt, Germany Appl. No. 767,672 Filed Oct. 15, 1968 Patented Dec. 1, 1970 Priority Oct. 17, 1967 Austria No. A9364/67 FILTERING PIPE FOR WELL 4 Claims, 4 Drawing Figs.
US. Cl 166/228; 210/496 Int. Cl E031) 3/18; E2 1 b 43/00 [50] Field ofSearch 166/228; 210/496, 510
[56] References Cited UNITED STATES PATENTS 260,803 7/1882 Tichenor 166/235 907,328 12/1908 Freeman 210/496 3,034,655 5/1962 York 210/496 Primary Examiner-James A. Leppink Attorney- Kurt Kelman ABSTRACT: The pipe sections of a well filtering pipe each comprises a water permeable tubular wall of a bonded granular material, and a plurality of elongated supports embedded within the wall and extending uniformly about the axis.
Patented Dec. 1, 1970 3,543,854
Fig. 4
Mum/0r: LJILHELH 356m MM 14w A6 GMT- FILTERING PIPE FOR WELL Background and Summary of the Invention The present invention relates to filtering pipes or casings for artesian wells. Such casings may consist of such granular materials as gravel bonded together by such adhesives as synthetic resin or vulcanized rubber, and may be reinforced with suitable support elements to prevent bending.
Artesian wells are usually constructed by first sinking a shaft of sufficient diameter, than placing a slitted filter pipe into the shaft, and finally pouring gravel between the shaft wall and the pipe. Although relatively. simple, building of deep wells of this type is relatively difficult and requires expert labor. For this reason, a variety of prefabricated filtering pipes for wells have been proposed. It is an object of this invention to provide an improved filter pipe section for well casings.
This object is accomplished by embedding a plurality of elongated support elements in the tubular wall of the pipe, with the support elements extending parallel to the axis of the pipe and being uniformly distributed within the wall. This provides minimal dimensioning and maximum filtering effect.
Brief Description of Drawing The above and other objects, advantages and features of the present invention will be better understood by reference to the following detailed description of certain preferred embodiments, taken in conjunction with the accompanying drawing wherein FIG, 1 is a perspective side view of an artesian well filter pipe; and
FIGS. 2 to 4 are cross sections of the wall of the pipe showing different embodiments of support elements.
Detailed Description Referring to the drawing and first to FIG. 1, the filter pipe is shown to comprise filter pipe section 1 having end flanges 2 to enable the pipe section 1 to be attached to like pipe sections fonning the filter pipe of an artesian well. In view of the sturdy construction, each filter pipe section may be relatively long, requiring only a few flange connections between adjacent sections even in a relatively deep well. As appears particularly from the cutout portion of the pipe section wall in FIG. 1, the tubular wall 4 of the filter pipe sections consists of a water permeable, bonded mass of gravel wherein the elongated support elements 3 are embedded, i.e. the wall is not constituted by support elements carrying filter plates therebetween as has been conventional.
In other words, each filter pipe section is a self-supporting filter pipe consisting of a suitable granular material, such as gravel, which is bonded by a suitable adhesive substance, such as a synthetic resin or vulcanizable rubber, to form a water permeable wall.
In the embodiment of FIG. 1, the elongated support elements 4 are of T-shaped cross section, being so embedded in the pipe wall that the cross bar 9 of each T-section is flush with the outer surface 5 of the wall while the other bar of the T-section points inwardly towards the axis of the pipe section, see FIG. 4. Extending the other T-section bar of the support elements substantially to the center line 6 of the pipe section wall is particularly advantageous because the flow section tapers a the sup e minimum towards the inner surface 11 of the wall and the pipe axis (see broken line conus in FIG. 4). This causes the radially extending section 11 behind the support elements to have a maximum extension.
FIG. 2 shows a support element 7 of substantially square cross section, with the flow lines again indicated in broken lines. within FIG. 3 shows another advantageous form of a support element 8 of elongated, rectangular cross section. These elements are radially arranged withing the pipe section wall, the center line 6 of the wall substantially bisecting the length of rt elements. In a mbodiments, the support elements are completely, or
at least largely, embedded in the pipe section wall, which produces advantageous dimensionally conditions for the support elements and for the wall thickness. The filtering wall and its support constitutes a unitary tubular body, the built-in sup port elements serving to prevent bending of the filtering mass in any direction. Outward bending is prevented by the soil surrounding the pipe section. The support elements may be relatively small since, being parallel to the filter pipe line, they need to support only the tensile load and are not subjected to a bending element. Thus, the filtering mass of the wall and the support elements complement each other in supporting the loads to which the pipe sections are subjected, the relatively small section of the support elements correspondingly increasing the cross section of the water permeable filter wall.
A series of experiments in artesian wells have shown, for instance, that filter pipes having a diameter of 30 cm. could be reduced in wall thickness from l0 to 3 cm., with support elements embedded in the wall of the pipe according to the present invention. This not only reduces the material cost of the pipe sections, but also minimizes transportation and construction costs because of the reduced weight of the pipe sections.
Mounting the support elements in the outer portion of the pipe wall, i.e. between the outer wall surface and the center line of the wall, is particularly advantageous. On the one hand, this produces a relatively large cross section of the wall radially behind the embedded support elements and, on the other hand, it increases the effective flow section of the filtering portion of the wall because the entire inner-half of the wall behind the center line is thus kept free for filtering purposes.
I claim:
l. A pipe section for a filtering pipe for a well, comprising:
1. a water permeable tubular wall having an axis and comprised of gravel bonded by a synthetic resin or vulcanizable rubber adhesive; and
2. a plurality of elongated support elements extending parallel to the axis and embedded within a radially outward portion of the wall, the support elements being uniformly distributed within the wall.
2. The pipe section of claim 1, wherein the support elements are of T-shaped cross section.
3. The pipe section of dam 2 wherein the cross bar of the T-shaped support element extends along the circumference of the wall and the elongated bar of the T-shaped support ele-
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT936467A AT273171B (en) | 1967-10-17 | 1967-10-17 | Filtration line for pipe wells |
Publications (1)
Publication Number | Publication Date |
---|---|
US3543854A true US3543854A (en) | 1970-12-01 |
Family
ID=3613506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US767672A Expired - Lifetime US3543854A (en) | 1967-10-17 | 1968-10-15 | Filtering pipe for well |
Country Status (7)
Country | Link |
---|---|
US (1) | US3543854A (en) |
AT (1) | AT273171B (en) |
BE (1) | BE722336A (en) |
DE (1) | DE1800852A1 (en) |
ES (1) | ES359186A1 (en) |
FR (1) | FR1588429A (en) |
NL (1) | NL6814691A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0399889A1 (en) * | 1989-05-23 | 1990-11-28 | Schlumberger Limited | Earth formation sampling and testing method and apparatus with filter means, and method for manufacturing such filter |
US5664628A (en) * | 1993-05-25 | 1997-09-09 | Pall Corporation | Filter for subterranean wells |
US6684945B1 (en) | 2002-02-20 | 2004-02-03 | In-Well Technologies, Inc. | Air filter for a well |
US20050226751A1 (en) * | 1999-10-27 | 2005-10-13 | In-Well Technologies, Inc. | Water pressure system with pressure tank installed within well casing of well |
US7013924B1 (en) | 2003-11-17 | 2006-03-21 | In-Well Technologies Inc. | Fluid pressure system including free floating bladder |
US20060144455A1 (en) * | 2003-11-17 | 2006-07-06 | Meyers Kenneth A | Fluid pressure system including free floating bladder |
US8875784B2 (en) * | 2012-02-13 | 2014-11-04 | Halliburton Energy Services, Inc. | Economical construction of well screens |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2719588A (en) * | 1987-10-29 | 1989-05-23 | Patent Company, The | Gravel pack for petroleum or water wells |
-
1967
- 1967-10-17 AT AT936467A patent/AT273171B/en active
-
1968
- 1968-10-03 DE DE19681800852 patent/DE1800852A1/en active Pending
- 1968-10-14 NL NL6814691A patent/NL6814691A/xx unknown
- 1968-10-15 BE BE722336D patent/BE722336A/xx unknown
- 1968-10-15 ES ES359186A patent/ES359186A1/en not_active Expired
- 1968-10-15 US US767672A patent/US3543854A/en not_active Expired - Lifetime
- 1968-10-17 FR FR1588429D patent/FR1588429A/fr not_active Expired
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0399889A1 (en) * | 1989-05-23 | 1990-11-28 | Schlumberger Limited | Earth formation sampling and testing method and apparatus with filter means, and method for manufacturing such filter |
US5664628A (en) * | 1993-05-25 | 1997-09-09 | Pall Corporation | Filter for subterranean wells |
US5909773A (en) * | 1993-05-25 | 1999-06-08 | Pall Corporation | Method of repairing a damaged well |
US20050226751A1 (en) * | 1999-10-27 | 2005-10-13 | In-Well Technologies, Inc. | Water pressure system with pressure tank installed within well casing of well |
US7093651B2 (en) | 1999-10-27 | 2006-08-22 | In-Well Technologies, Inc. | Water pressure system with pressure tank installed within well casing of well |
US6684945B1 (en) | 2002-02-20 | 2004-02-03 | In-Well Technologies, Inc. | Air filter for a well |
USRE41507E1 (en) * | 2002-02-20 | 2010-08-17 | In-Well Technologies, Inc. | Air filter for a well |
US7013924B1 (en) | 2003-11-17 | 2006-03-21 | In-Well Technologies Inc. | Fluid pressure system including free floating bladder |
US20060144455A1 (en) * | 2003-11-17 | 2006-07-06 | Meyers Kenneth A | Fluid pressure system including free floating bladder |
US7255133B2 (en) | 2003-11-17 | 2007-08-14 | In-Well Technologies, Inc. | Fluid pressure system including free floating bladder |
US8875784B2 (en) * | 2012-02-13 | 2014-11-04 | Halliburton Energy Services, Inc. | Economical construction of well screens |
Also Published As
Publication number | Publication date |
---|---|
NL6814691A (en) | 1969-04-21 |
AT273171B (en) | 1969-08-11 |
ES359186A1 (en) | 1970-06-16 |
BE722336A (en) | 1969-03-14 |
DE1800852A1 (en) | 1971-06-03 |
FR1588429A (en) | 1970-04-10 |
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