US3080926A - Casing centralizer with replaceable wings - Google Patents
Casing centralizer with replaceable wings Download PDFInfo
- Publication number
- US3080926A US3080926A US101137A US10113761A US3080926A US 3080926 A US3080926 A US 3080926A US 101137 A US101137 A US 101137A US 10113761 A US10113761 A US 10113761A US 3080926 A US3080926 A US 3080926A
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- US
- United States
- Prior art keywords
- centralizer
- slot
- rib
- tubular
- spacer
- 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
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- 239000000463 material Substances 0.000 claims description 5
- 239000012858 resilient material Substances 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 description 16
- 230000002093 peripheral effect Effects 0.000 description 10
- 101000577121 Homo sapiens Monocarboxylate transporter 3 Proteins 0.000 description 1
- 102100025275 Monocarboxylate transporter 3 Human genes 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/10—Wear protectors; Centralising devices, e.g. stabilisers
- E21B17/1042—Elastomer protector or centering means
Definitions
- This invention relates to devices for centering or positioning tubular members within encompassing walls.
- An example of such device is a centralizer for a casing or liner string inserted in an oil and gas well.
- an object of the present invention is to provide a centering device of the above type having replaceable, yet firmly anchored rubber spacer ribs.
- Another object is to provide such a device with means for substituting spacer ribs of various widths so as to vary the outside diameter of the device.
- Another object is to provide improved means for mounting the rubber ribs or wings on the centralizer body.
- FIG. 1 is an elevation of the novel centralizer device mounted on a casing within a bore hole
- FIG. 2 is a transverse section taken on line 2-2 of FIG. 1;
- FIG. 3 is an axial half center section of the device.
- the novel centralizer consists of a tubular body which fits more or less snugly upon the casing or other tubular member to be centered and has -a plurality of elongated recesses or slots arranged symmetrically therearound.
- Located in each slot is a separately-formed spacer rib or wing each consisting of a body of rubber or rubber-like material and a rigid plate-like base. The body and base form parallel peripheral shoulders which are positioned to overlie the periphery of the receiving slot in the tubular body to position the spacer rib.
- peripheral shoulder on the rubber body portion is flexible 1 or distortable to permit the body. to be inserted from the inside, while the inner rib formed by the base portion is rigid to prevent the spacer rib from being forced outwardly entirely through its receiving slot.
- the centralizer consists of a tubular body portion 5 shown mounted upon a casing section 6 inserted in a bore hole 7, as of an oil or gas well.
- the centralizer is shown secured in position by stop collar devices 8 and 9, but any other suitable positioning means may be utilized.
- Tubular body 5 is provided with six elongated recesses or slots 11, each in an outwardly bulged portionlz which forms a lip 13 constituting the periphery of slot 11.
- Each rib member consists of a body portion 16, preferably of rubber or other rubber-like or similarly resilient, form sustaining material, and a plate-like base portion 17 of metal or other rigid material.
- Body portion 16 has tapering side and outer walls, as at 18 and 19 which, at their basal extremities terminate in a peripheral shoulder 20 which slightly overlies the upper surface of lip 13 of the receiving recess or slot and surrounds portion 16.
- Base portion 17 extends peripherally slightly beyond the body portion, as at 22, to forma second peripheral shoulder which underlies the inner surface of lip 13.
- Shoulder 22 extends entirely around the spacer rib and is parallel to and spaced slightly from the previously mentioned peripheral shoulder 20 on the body portion.
- the resilient tapering body portion 16 is inserted into a slot 11 from the inside and then forced outwardly into position, outer peripheral shoulder 20 flexing or distorting to permit this action.
- rigid peripheral base shoulder 22, in the assembly lodges beneath the lip 13 of the receiving slot or recess to effectively prevent the forcing of the spacer rib outwardly entirely through its receiving slot. In other words, the spacer rib is firmly lodged in the assembled position shown in the figures.
- the spacer ribs When the centralizer is mounted upon a tubular member, such as casing 6, the spacer ribs are firmly held thereby against inward displacement, even when the assembly is lodged in the bore hole 7. However, when the centralizer is not applied to casing, the spacer ribs can be removed by inward pressure applied to their outer surfaces causing the shoulder to flex so as to clear lip 13.
- the outside diameter of the centralizer depends upon the size of ribs utilized. Accordingly, it is merely necessary for the supply store to stock a limited number of the tubular bodies and also stocks of the separate spacer ribs of various sizes which can be assembled with the uniform tubular bodies in accordance with requirements of particular orders. This reduces the inventory which a supplier or driller must maintain and, accordingly, the cost of the centralizer.
- a centralizer for a tubular member comprising a tubular body for reception around the member and having a slot and a spacer rib inserted in said slot and projecting radially outwardly from said body, said rib having a body portion of resilient material and a plate-like base portion of rigid material, said base and body portions terminating peripherally in parallel shoulders forming a groove therebetween shaped to embrace the periphery of the slot in said tubular body for maintaining said spacer rib properly positioned.
- a centralizer as described in claim 1 in which the walls of said body portion taper radially outwardly from the peripheral shoulder thereon and said rib is distortable to facilitate insertion of said rib into the slot in said tubular body from the inside.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Description
March 12, 1963 T. E. REMP, JR 3,080,926
CASING CENTRALIZER WITH REPLACEABLE WINGS Filed April 6, 1961 INVENTOR. 7/20/7704 5. Rem 0, z/r.
ATTORNEY United States Patent 3,080,926 CASING CENTRALIZER WITH REPLACEABLE WINGS Thomas E. Remp, Jr., Hannover, Germany, assignor to Weatherford Oil Tool Company, Inc., Houston,,Tex., a corporation of Texas Filed Apr. 6, 1961, Ser. No. 101,137 3 Claims. (Cl. 1456-241) This invention relates to devices for centering or positioning tubular members within encompassing walls. An example of such device is a centralizer for a casing or liner string inserted in an oil and gas well.
Such eentralizer-s, customarily, are used in maintaining casing properly positioned in the bore hole preparatory to cementing. However, since these bore holes vary considerably in diameter, the centralizers likewise must vary, and with the ordinary types of centralizers this requires the stocking of various sizes by supply houses.
Furthermore, in current types of centralizers having rubber wings for providing positive positioning and for reducing electrolytic efiects, the mounting of the wings has not been entirely satisfactory.
Accordingly, an object of the present invention is to provide a centering device of the above type having replaceable, yet firmly anchored rubber spacer ribs.
Another object is to provide such a device with means for substituting spacer ribs of various widths so as to vary the outside diameter of the device.
Another object is to provide improved means for mounting the rubber ribs or wings on the centralizer body.
These objects and others hereinafter appearing are attained by the device illustrated in the accompanying drawing, in which:
FIG. 1 is an elevation of the novel centralizer device mounted on a casing within a bore hole;
FIG. 2 is a transverse section taken on line 2-2 of FIG. 1; and
FIG. 3 is an axial half center section of the device.
In general, the novel centralizer consists of a tubular body which fits more or less snugly upon the casing or other tubular member to be centered and has -a plurality of elongated recesses or slots arranged symmetrically therearound. Located in each slot is a separately-formed spacer rib or wing each consisting of a body of rubber or rubber-like material and a rigid plate-like base. The body and base form parallel peripheral shoulders which are positioned to overlie the periphery of the receiving slot in the tubular body to position the spacer rib. The
peripheral shoulder on the rubber body portion is flexible 1 or distortable to permit the body. to be inserted from the inside, while the inner rib formed by the base portion is rigid to prevent the spacer rib from being forced outwardly entirely through its receiving slot.
With further reference to the drawing, the centralizer consists of a tubular body portion 5 shown mounted upon a casing section 6 inserted in a bore hole 7, as of an oil or gas well. The centralizer is shown secured in position by stop collar devices 8 and 9, but any other suitable positioning means may be utilized. Tubular body 5 is provided with six elongated recesses or slots 11, each in an outwardly bulged portionlz which forms a lip 13 constituting the periphery of slot 11.
Received in recesses or slots 11 are identical separately formed spacer rib members, generally designated 15. Each rib member consists of a body portion 16, preferably of rubber or other rubber-like or similarly resilient, form sustaining material, and a plate-like base portion 17 of metal or other rigid material. Body portion 16 has tapering side and outer walls, as at 18 and 19 which, at their basal extremities terminate in a peripheral shoulder 20 which slightly overlies the upper surface of lip 13 of the receiving recess or slot and surrounds portion 16. Base portion 17 extends peripherally slightly beyond the body portion, as at 22, to forma second peripheral shoulder which underlies the inner surface of lip 13. Shoulder 22 extends entirely around the spacer rib and is parallel to and spaced slightly from the previously mentioned peripheral shoulder 20 on the body portion. These .two shoulders form, in effect, a peripheral groove which, in the assembly, snugly receives peripheral lip 13 of the receiving slot.
To assemble the spacer rib with the tubular body, while disassembled from the casing, the resilient tapering body portion 16 is inserted into a slot 11 from the inside and then forced outwardly into position, outer peripheral shoulder 20 flexing or distorting to permit this action. However, rigid peripheral base shoulder 22, in the assembly, lodges beneath the lip 13 of the receiving slot or recess to effectively prevent the forcing of the spacer rib outwardly entirely through its receiving slot. In other words, the spacer rib is firmly lodged in the assembled position shown in the figures.
When the centralizer is mounted upon a tubular member, such as casing 6, the spacer ribs are firmly held thereby against inward displacement, even when the assembly is lodged in the bore hole 7. However, when the centralizer is not applied to casing, the spacer ribs can be removed by inward pressure applied to their outer surfaces causing the shoulder to flex so as to clear lip 13.
Of course, the outside diameter of the centralizer depends upon the size of ribs utilized. Accordingly, it is merely necessary for the supply store to stock a limited number of the tubular bodies and also stocks of the separate spacer ribs of various sizes which can be assembled with the uniform tubular bodies in accordance with requirements of particular orders. This reduces the inventory which a supplier or driller must maintain and, accordingly, the cost of the centralizer.
The invention may be modified in various respects as will occur to those skilled in the art and the exclusive use of all such modifications as come Within the scope of the appended claims is contemplated.
I claim:
1. A centralizer for a tubular member comprising a tubular body for reception around the member and having a slot and a spacer rib inserted in said slot and projecting radially outwardly from said body, said rib having a body portion of resilient material and a plate-like base portion of rigid material, said base and body portions terminating peripherally in parallel shoulders forming a groove therebetween shaped to embrace the periphery of the slot in said tubular body for maintaining said spacer rib properly positioned.
2. A centralizer as described in claim 1 in which the walls of said body portion taper radially outwardly from the peripheral shoulder thereon and said rib is distortable to facilitate insertion of said rib into the slot in said tubular body from the inside.
3. A centralizer as described in claim 1 in which said tubular body is provided with a plurality of elongated slots each extending axially and each having one of said spacer ribs lodged therein.
References Cited in the tile of this patent UNITED STATES PATENTS
Claims (1)
1. A CENTRALIZER FOR A TUBULAR MEMBER COMPRISING A TUBULAR BODY FOR RECEPTION AROUND THE MEMBER AND HAVING A SLOT AND A SPACER RIB INSERTED IN SAID SLOT AND PROJECTING RADIALLY OUTWARDLY FROM SAID BODY, SAID RIB HAVING A BODY PORTION OF RESILIENT MATERIAL AND A PLATE-LIKE BASE PORTION OF RIGID MATERIAL, SAID BASE AND BODY PORTIONS TERMINATING PERIPHERALLY IN PARALLEL SHOULDERS FORMING A GROOVE THEREBETWEEN SHAPED TO EMBRACE THE PERIPHERY OF THE SLOT IN SAID TUBULAR BODY FOR MAINTAINING SAID SPACER RIB PROPERLY POSITIONED.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US101137A US3080926A (en) | 1961-04-06 | 1961-04-06 | Casing centralizer with replaceable wings |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US101137A US3080926A (en) | 1961-04-06 | 1961-04-06 | Casing centralizer with replaceable wings |
Publications (1)
Publication Number | Publication Date |
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US3080926A true US3080926A (en) | 1963-03-12 |
Family
ID=22283199
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US101137A Expired - Lifetime US3080926A (en) | 1961-04-06 | 1961-04-06 | Casing centralizer with replaceable wings |
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US (1) | US3080926A (en) |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3197263A (en) * | 1963-01-30 | 1965-07-27 | Benton Dorothy Holcombe | Vibration dampener and stabilizer for sucker rods |
US3275081A (en) * | 1963-11-26 | 1966-09-27 | John R Beylik | Method of lining water wells and noncorrosive liner therefor |
US3292708A (en) * | 1963-07-29 | 1966-12-20 | Louis C Mundt | Tubing centralizer |
US4099564A (en) * | 1976-07-19 | 1978-07-11 | Chevron Research Company | Low heat conductive frangible centralizers |
WO1982001569A1 (en) * | 1980-11-03 | 1982-05-13 | Oil Tools Inc Dailey | Well jar |
US4448248A (en) * | 1981-06-26 | 1984-05-15 | Gearhart Industries, Inc. | Enhanced flow tool positioner |
US5487426A (en) * | 1994-09-23 | 1996-01-30 | Enterra Patco Oilfield Products Inc. | Rod guide with removable vanes |
US5881810A (en) * | 1996-08-24 | 1999-03-16 | Weatherford/Lamb, Inc. | Centralizer |
US6516877B2 (en) * | 1997-11-05 | 2003-02-11 | Marcus Terry | Sucker rod protector |
US20030164236A1 (en) * | 2000-06-30 | 2003-09-04 | Thornton John Thomas Oliver | Downhole tools |
EP1653039A2 (en) * | 2000-01-22 | 2006-05-03 | Downhole Products PLC | Centraliser |
US20060157974A1 (en) * | 2003-03-21 | 2006-07-20 | Hans-Bernd Luft | Composite low cycle fatigue coiled tubing connector |
US20080210419A1 (en) * | 2005-01-18 | 2008-09-04 | Downhole Products Plc | Centralizer |
WO2010109229A3 (en) * | 2009-03-27 | 2010-11-25 | Caledus Limited | Casing centraliser |
USD665825S1 (en) * | 2011-10-28 | 2012-08-21 | Top-Co Cementing Products Inc. | Casing centralizer |
USD665824S1 (en) * | 2011-10-28 | 2012-08-21 | Top-Co Cementing Products Inc. | Casing centralizer |
USD674818S1 (en) | 2011-10-28 | 2013-01-22 | Top-Co Cementing Products Inc. | Casing centralizer |
USD674817S1 (en) | 2011-10-28 | 2013-01-22 | Top-Co Cementing Products Inc. | Casing centralizer |
USD849800S1 (en) | 2012-04-04 | 2019-05-28 | Summit Energy Services, Inc. | Casing centralizer having spiral blades |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1844371A (en) * | 1930-02-24 | 1932-02-09 | Grant John | Hole reaming and straightening device |
US1894519A (en) * | 1930-04-28 | 1933-01-17 | Richard A Sperry | Drill pipe protector |
US2847260A (en) * | 1956-08-20 | 1958-08-12 | Stephen V Dillon | Rod stabilizer device for wells |
GB851036A (en) * | 1958-07-11 | 1960-10-12 | Drilco Oil Tools Inc | Drill collar stabilizer |
-
1961
- 1961-04-06 US US101137A patent/US3080926A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1844371A (en) * | 1930-02-24 | 1932-02-09 | Grant John | Hole reaming and straightening device |
US1894519A (en) * | 1930-04-28 | 1933-01-17 | Richard A Sperry | Drill pipe protector |
US2847260A (en) * | 1956-08-20 | 1958-08-12 | Stephen V Dillon | Rod stabilizer device for wells |
GB851036A (en) * | 1958-07-11 | 1960-10-12 | Drilco Oil Tools Inc | Drill collar stabilizer |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3197263A (en) * | 1963-01-30 | 1965-07-27 | Benton Dorothy Holcombe | Vibration dampener and stabilizer for sucker rods |
US3292708A (en) * | 1963-07-29 | 1966-12-20 | Louis C Mundt | Tubing centralizer |
US3275081A (en) * | 1963-11-26 | 1966-09-27 | John R Beylik | Method of lining water wells and noncorrosive liner therefor |
US4099564A (en) * | 1976-07-19 | 1978-07-11 | Chevron Research Company | Low heat conductive frangible centralizers |
WO1982001569A1 (en) * | 1980-11-03 | 1982-05-13 | Oil Tools Inc Dailey | Well jar |
US4394883A (en) * | 1980-11-03 | 1983-07-26 | Dailey Oil Tools, Inc. | Well jar |
US4448248A (en) * | 1981-06-26 | 1984-05-15 | Gearhart Industries, Inc. | Enhanced flow tool positioner |
US5487426A (en) * | 1994-09-23 | 1996-01-30 | Enterra Patco Oilfield Products Inc. | Rod guide with removable vanes |
US5881810A (en) * | 1996-08-24 | 1999-03-16 | Weatherford/Lamb, Inc. | Centralizer |
US6516877B2 (en) * | 1997-11-05 | 2003-02-11 | Marcus Terry | Sucker rod protector |
EP1653039A3 (en) * | 2000-01-22 | 2006-05-10 | Downhole Products PLC | Centraliser |
EP1653039A2 (en) * | 2000-01-22 | 2006-05-03 | Downhole Products PLC | Centraliser |
AU2001266186B2 (en) * | 2000-06-30 | 2006-08-24 | Tercel Ip Limited | Composite centraliser |
US7604059B2 (en) | 2000-06-30 | 2009-10-20 | Brunel Oilfield Services (Uk) Limited | Downhole tools |
US20030164236A1 (en) * | 2000-06-30 | 2003-09-04 | Thornton John Thomas Oliver | Downhole tools |
US7357178B2 (en) * | 2000-06-30 | 2008-04-15 | Brunel Oilfield Services (Uk) Limited | In and relating to downhole tools |
US20080156488A1 (en) * | 2000-06-30 | 2008-07-03 | Brunel Oilfield Services (Uk) Limited | Downhole Tools |
US7562909B2 (en) * | 2003-03-21 | 2009-07-21 | Bj Services Company | Composite low cycle fatigue coiled tubing connector |
US20060157974A1 (en) * | 2003-03-21 | 2006-07-20 | Hans-Bernd Luft | Composite low cycle fatigue coiled tubing connector |
US20080210419A1 (en) * | 2005-01-18 | 2008-09-04 | Downhole Products Plc | Centralizer |
US7694733B2 (en) * | 2005-01-18 | 2010-04-13 | Downhole Products Plc | Centralizer |
WO2010109229A3 (en) * | 2009-03-27 | 2010-11-25 | Caledus Limited | Casing centraliser |
USD665825S1 (en) * | 2011-10-28 | 2012-08-21 | Top-Co Cementing Products Inc. | Casing centralizer |
USD665824S1 (en) * | 2011-10-28 | 2012-08-21 | Top-Co Cementing Products Inc. | Casing centralizer |
USD674818S1 (en) | 2011-10-28 | 2013-01-22 | Top-Co Cementing Products Inc. | Casing centralizer |
USD674817S1 (en) | 2011-10-28 | 2013-01-22 | Top-Co Cementing Products Inc. | Casing centralizer |
USD849800S1 (en) | 2012-04-04 | 2019-05-28 | Summit Energy Services, Inc. | Casing centralizer having spiral blades |
USD983231S1 (en) | 2012-04-04 | 2023-04-11 | Summit Casing Services, Llc | Casing centralizer having spiral blades |
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