CA2946193A1 - Interchangeable multi-piece centralizer barrel - Google Patents
Interchangeable multi-piece centralizer barrel Download PDFInfo
- Publication number
- CA2946193A1 CA2946193A1 CA2946193A CA2946193A CA2946193A1 CA 2946193 A1 CA2946193 A1 CA 2946193A1 CA 2946193 A CA2946193 A CA 2946193A CA 2946193 A CA2946193 A CA 2946193A CA 2946193 A1 CA2946193 A1 CA 2946193A1
- Authority
- CA
- Canada
- Prior art keywords
- centralizer
- barrel
- ring
- piece
- removable
- 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.)
- Abandoned
Links
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
A two-piece centralizer for centralizing a measurement while drilling tool while inside of a drill collar used in the directional drilling industry.
Description
INTERCHANGEABLE MULTI-PIECE CENTRALIZER BARREL
FIELD OF THE INVENTION
The subject invention relates generally to down-hole tools used during directional drilling of a borehole in the earths subsurface. The subject invention relates more specifically to centralizer barrels used with centralizers to keep down-hole tools centered in a measurement while drilling ("MWD") collar.
BACKGROUND
The MWD centralizer technology that is currently being used today is a one-piece barrel centralizer system that has a four blade rubber centralizer permanently molded onto the one-piece barrel. Although this technology works well, when it comes to servicing the old centralizers because of high wear and erosion caused from the high flow of drilling mud, the centralizer must first be sent to a machine shop to have the rubber compound machined from the one-piece barrel, and then sent to a rubber manufacturer to remold a new rubber centralizer onto the barrel. This very timely and costly process is eliminated by the present invention.
The quick change two-piece MWD centralizer barrel of the present invention is unique because a worn centralizer can be replaced by simply removing the centralizer system from the MWD module and then removing the end ring so that the worn centralizer can be removed and a new centralizer can be inserted onto the barrel, after which the end ring is replaced on the barrel. All of these steps can be accomplished in a matter of minutes without having to ship the centralizer off site to a machine shop to have the rubber compound machined 1 0 from the one-piece barrel, and then sent to a rubber manufacturer to remold a new rubber centralizer onto the barrel, thereby saving time and money.
The two-piece MWD centralizer of the present invention is used to centralize the MWD tool while inside of a non-magnetic collar (a drill collar used in the directional drilling industry which eliminates any and all magnetic interference with the survey instrument and or MWD tool) while drilling. The centralizer stabilizes the MWD instrument while high rates of drilling mud flow past the tool, damping all vibration that may cause serious destructive damage to the very expensive survey instrument. What makes the two-piece MWD
centralizer barrel so unique and useful to the industry is that it can accommodate a variety of different types and styles of rubber centralizers and different size outer diameters, which can all be changed in the field and on the fly, or back at the service facility prior to the job, by just simply un-torqueing and unscrewing
FIELD OF THE INVENTION
The subject invention relates generally to down-hole tools used during directional drilling of a borehole in the earths subsurface. The subject invention relates more specifically to centralizer barrels used with centralizers to keep down-hole tools centered in a measurement while drilling ("MWD") collar.
BACKGROUND
The MWD centralizer technology that is currently being used today is a one-piece barrel centralizer system that has a four blade rubber centralizer permanently molded onto the one-piece barrel. Although this technology works well, when it comes to servicing the old centralizers because of high wear and erosion caused from the high flow of drilling mud, the centralizer must first be sent to a machine shop to have the rubber compound machined from the one-piece barrel, and then sent to a rubber manufacturer to remold a new rubber centralizer onto the barrel. This very timely and costly process is eliminated by the present invention.
The quick change two-piece MWD centralizer barrel of the present invention is unique because a worn centralizer can be replaced by simply removing the centralizer system from the MWD module and then removing the end ring so that the worn centralizer can be removed and a new centralizer can be inserted onto the barrel, after which the end ring is replaced on the barrel. All of these steps can be accomplished in a matter of minutes without having to ship the centralizer off site to a machine shop to have the rubber compound machined 1 0 from the one-piece barrel, and then sent to a rubber manufacturer to remold a new rubber centralizer onto the barrel, thereby saving time and money.
The two-piece MWD centralizer of the present invention is used to centralize the MWD tool while inside of a non-magnetic collar (a drill collar used in the directional drilling industry which eliminates any and all magnetic interference with the survey instrument and or MWD tool) while drilling. The centralizer stabilizes the MWD instrument while high rates of drilling mud flow past the tool, damping all vibration that may cause serious destructive damage to the very expensive survey instrument. What makes the two-piece MWD
centralizer barrel so unique and useful to the industry is that it can accommodate a variety of different types and styles of rubber centralizers and different size outer diameters, which can all be changed in the field and on the fly, or back at the service facility prior to the job, by just simply un-torqueing and unscrewing
2 and removing the end ring and remove the old or undesirable rubber centralizer and inserting a new centralizer of choice and reconnecting the end ring and reinstalling barreled centralizer onto the MWD tool. This quick change two-piece centralizer barrel system saves time and money and is a huge benefit to the MWD survey industry.
The accompanying drawing and photographs are provided for the purpose of illustration only and are not intended as a definition of the limits of the present invention. The drawing and photographs illustrate a preferred embodiment of the present invention.
FIG.1 is a color photograph showing an isometric view of the first embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.2 is a color photograph showing another isometric view of the first embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.3 is a color photograph showing an isometric view of the barrel and removable ring of the first embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.4 is a color photograph showing an isometric view of the second embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
The accompanying drawing and photographs are provided for the purpose of illustration only and are not intended as a definition of the limits of the present invention. The drawing and photographs illustrate a preferred embodiment of the present invention.
FIG.1 is a color photograph showing an isometric view of the first embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.2 is a color photograph showing another isometric view of the first embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.3 is a color photograph showing an isometric view of the barrel and removable ring of the first embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.4 is a color photograph showing an isometric view of the second embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
3 FIG.5 is a color photograph showing another isometric view of the second embodiment of the Interchangeable Multi-Piece Centralizer BarreL
FIG.6 is a color photograph showing an isometric view of the barrel and removable ring of the second embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.7 is a color photograph showing an isometric view of the third embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.8 is a color photograph showing another isometric view of the third embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.9 is a color photograph showing an isometric view of the barrel and 1 5 removable ring of the third embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.10 is a color photograph showing an isometric view of the barrel, the centralizer, and the removable ring of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.11 is a color photograph showing a side view of the barrel, the centralizer, and the removable ring of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.12 is a color photograph showing a side view of the barrel with the
FIG.6 is a color photograph showing an isometric view of the barrel and removable ring of the second embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.7 is a color photograph showing an isometric view of the third embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.8 is a color photograph showing another isometric view of the third embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.9 is a color photograph showing an isometric view of the barrel and 1 5 removable ring of the third embodiment of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.10 is a color photograph showing an isometric view of the barrel, the centralizer, and the removable ring of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.11 is a color photograph showing a side view of the barrel, the centralizer, and the removable ring of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.12 is a color photograph showing a side view of the barrel with the
4 centralizer partially inserted thereon, and the removable ring of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.13 is a color photograph showing a side view of the barrel with the centralizer fully inserted thereon, and the removable ring of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.14 is a color photograph showing a side view of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.15 is a color photograph showing another side view of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.16 is a color photograph showing an isometric view of the Interchangeable Multi-Piece Centralizer Barrel, DESCRIPTION OF THE INVENTION
While the present invention will be described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof.
Therefore, it is intended that the present invention not be limited to the particular
FIG.13 is a color photograph showing a side view of the barrel with the centralizer fully inserted thereon, and the removable ring of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.14 is a color photograph showing a side view of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.15 is a color photograph showing another side view of the Interchangeable Multi-Piece Centralizer Barrel.
FIG.16 is a color photograph showing an isometric view of the Interchangeable Multi-Piece Centralizer Barrel, DESCRIPTION OF THE INVENTION
While the present invention will be described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof.
Therefore, it is intended that the present invention not be limited to the particular
5 embodiments disclosed as the best mode contemplated for carrying out this invention, but that the invention will include all embodiments (and legal equivalents thereof).
The present invention is a centralizer barrel 10 designed to be used with a centralizer 11 to keep down-holes tools, such as a measurement while drilling ("MWD") survey tool, centered in a collar. As shown in FIGS. 3, 6, and 9, centralizer barrel 10 has two primary parts, including a barrel 12 having male threads 13 at one end and a fixed ring 14 at the other end, and a removable ring equipped with female threads 16. Both primary parts of centralizer barrel 10 are preferably made of high-strength metal, such as Nitronic 50 high-strength 15 alloy steel.
As shown in FIGS. 1 through 11, barrel 12 is preferably cylindrical in shape having an outer diameter 17. As shown in FIGS. 3, 6, and 9, one end of barrel 12 is equipped with male threads 13 for receiving the female threads 16 of removable 15.
As shown in FIGS. 3, 6, and 9, the other end of barrel 12 is equipped with a fixed ring 14, which is preferably cylindrical in shape and has an outer diameter 18 longer than outer diameter 17 of barrel 12. Fixed ring 14 creates a shoulder 19 to prevent centralizer 11 from sliding off barrel 12.
The present invention is a centralizer barrel 10 designed to be used with a centralizer 11 to keep down-holes tools, such as a measurement while drilling ("MWD") survey tool, centered in a collar. As shown in FIGS. 3, 6, and 9, centralizer barrel 10 has two primary parts, including a barrel 12 having male threads 13 at one end and a fixed ring 14 at the other end, and a removable ring equipped with female threads 16. Both primary parts of centralizer barrel 10 are preferably made of high-strength metal, such as Nitronic 50 high-strength 15 alloy steel.
As shown in FIGS. 1 through 11, barrel 12 is preferably cylindrical in shape having an outer diameter 17. As shown in FIGS. 3, 6, and 9, one end of barrel 12 is equipped with male threads 13 for receiving the female threads 16 of removable 15.
As shown in FIGS. 3, 6, and 9, the other end of barrel 12 is equipped with a fixed ring 14, which is preferably cylindrical in shape and has an outer diameter 18 longer than outer diameter 17 of barrel 12. Fixed ring 14 creates a shoulder 19 to prevent centralizer 11 from sliding off barrel 12.
6 As shown in FIG. 1, in the first embodiment of the present invention, the end of fixed ring 14 is equipped with an annular groove 21 for receiving an 0-ring (not shown).
As shown in FIG. 4, in the second embodiment of the present invention, the inner surface 20 of fixed ring 14 is equipped with an annular groove.21 for receiving an 0-ring (not shown).
= As shown in FIG. 7, in the third embodiment of the present invention, fixed ring 14 is not equipped with an annular groove for receiving an 0-ring.
As shown in FIGS. 3, 6, and 9, removable ring 15 is preferably cylindrical in shape and has an outer diameter 22 longer than outer diameter 17 of barrel 12.
Removable ring 15 creates a shoulder 23 to prevent centralizer 11 from sliding off barrel 12. The inner surface 24 of removable ring 15 is equipped with female threads 16, which allow removable ring 15 to be screwed onto male threads 13 of barrel 12.
As shown in FIGS. 2 and 3, in the first embodiment of the present invention, the inner surface 24 of removable ring 15 is not equipped with an annular groove for receiving an 0-ring.
As shown in FIGS. 5 and 6, in the second embodiment of the present invention, the inner surface 24 of removable ring 15 is equipped with an annular
As shown in FIG. 4, in the second embodiment of the present invention, the inner surface 20 of fixed ring 14 is equipped with an annular groove.21 for receiving an 0-ring (not shown).
= As shown in FIG. 7, in the third embodiment of the present invention, fixed ring 14 is not equipped with an annular groove for receiving an 0-ring.
As shown in FIGS. 3, 6, and 9, removable ring 15 is preferably cylindrical in shape and has an outer diameter 22 longer than outer diameter 17 of barrel 12.
Removable ring 15 creates a shoulder 23 to prevent centralizer 11 from sliding off barrel 12. The inner surface 24 of removable ring 15 is equipped with female threads 16, which allow removable ring 15 to be screwed onto male threads 13 of barrel 12.
As shown in FIGS. 2 and 3, in the first embodiment of the present invention, the inner surface 24 of removable ring 15 is not equipped with an annular groove for receiving an 0-ring.
As shown in FIGS. 5 and 6, in the second embodiment of the present invention, the inner surface 24 of removable ring 15 is equipped with an annular
7 groove 25 for receiving an 0-ring (not shown).
As shown in FIGS. 8 and 9, in the third embodiment of the present invention, the inner surface 24 of removable ring 15 is not equipped with an annular groove for receiving an 0-ring.
The prior art includes one-piece centralizer barrels with a centralizer fitted 1 0 between rings located at each end of the centralizer barrel. On these prior art models, when the centralizer wears out, as it is prone to do because of erosion from mud flow, the centralizer barrel and the worn out centralizer must be replaced.
The present invention eliminates the need to replace both the centralizer barrel and the worn out centralizer. With the centralizer barrel 10 of the present invention, when the centralizer 11 wears out, end cap 15 is removed from barrel 12, as shown in FIGS. 3, 6, 9, 10, 11, 12, and 13, so that the worn out centralizer 11 can be slid off barrel 12 and replaced with another centralizer 11. End cap is then re-attached to barrel 12, as shown in FIGS. 14 through 16, allowing the same centralizer barrel 10 and the new centralizer 11 to be quickly placed back into service.
It is understood that one embodiment of the present invention has been disclosed by way of example and that other modifications and alterations may
As shown in FIGS. 8 and 9, in the third embodiment of the present invention, the inner surface 24 of removable ring 15 is not equipped with an annular groove for receiving an 0-ring.
The prior art includes one-piece centralizer barrels with a centralizer fitted 1 0 between rings located at each end of the centralizer barrel. On these prior art models, when the centralizer wears out, as it is prone to do because of erosion from mud flow, the centralizer barrel and the worn out centralizer must be replaced.
The present invention eliminates the need to replace both the centralizer barrel and the worn out centralizer. With the centralizer barrel 10 of the present invention, when the centralizer 11 wears out, end cap 15 is removed from barrel 12, as shown in FIGS. 3, 6, 9, 10, 11, 12, and 13, so that the worn out centralizer 11 can be slid off barrel 12 and replaced with another centralizer 11. End cap is then re-attached to barrel 12, as shown in FIGS. 14 through 16, allowing the same centralizer barrel 10 and the new centralizer 11 to be quickly placed back into service.
It is understood that one embodiment of the present invention has been disclosed by way of example and that other modifications and alterations may
8 occur to those skilled in the art without departing from the scope of the present invention.
9
Claims (6)
1. A centralizer barrel for supporting a centralizer, comprising:
(a) a cylindrical barrel having male threads at one end and a fixed ring at the opposite end, where said fixed ring creates a shoulder to prevent a centralizer from sliding off said cylindrical barrel;
(b) a removable ring equipped with female threads, where said male threads of said cylindrical barrel are designed to receive said female threads of said removable ring, and where said removable ring creates a shoulder to prevent a centralizer from sliding off said cylindrical barrel 12; and (c) a centralizer removably inserted onto said cylindrical barrel between said shoulder created by said fixed ring and said shoulder created by said removable ring.
(a) a cylindrical barrel having male threads at one end and a fixed ring at the opposite end, where said fixed ring creates a shoulder to prevent a centralizer from sliding off said cylindrical barrel;
(b) a removable ring equipped with female threads, where said male threads of said cylindrical barrel are designed to receive said female threads of said removable ring, and where said removable ring creates a shoulder to prevent a centralizer from sliding off said cylindrical barrel 12; and (c) a centralizer removably inserted onto said cylindrical barrel between said shoulder created by said fixed ring and said shoulder created by said removable ring.
2. The centralizer barrel of Claim 1 where said cylindrical barrel, said fixed ring, and said removable ring are made of high-strength metal.
3. The centralizer barrel of Claim 2 where said cylindrical barrel, said fixed ring, and said removable ring are made of Nitronic 50 high-strength alloy steel.
4. The centralizer barrel of Claim 3 where said fixed ring has an outer end equipped with an annular groove for receiving an O-ring.
5. The centralizer barrel of Claim 3 where said fixed ring has an inner surface equipped with an annular groove for receiving an O-ring.
6. The centralizer barrel of Claim 5 where said removable ring has an inner Surface equipped with an annular groove for receiving an O-ring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201662337647P | 2016-05-17 | 2016-05-17 | |
| US62/337,647 | 2016-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2946193A1 true CA2946193A1 (en) | 2017-11-17 |
Family
ID=60324232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2946193A Abandoned CA2946193A1 (en) | 2016-05-17 | 2016-10-21 | Interchangeable multi-piece centralizer barrel |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2946193A1 (en) |
-
2016
- 2016-10-21 CA CA2946193A patent/CA2946193A1/en not_active Abandoned
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2326908A (en) | Drill bit | |
| AU2016414788B2 (en) | Alignment sub with deformable sleeve | |
| US8689889B2 (en) | Downhole magnet tool and method of assembly | |
| US10358895B2 (en) | Reusable pre-energized backup ring | |
| EP1373676B1 (en) | An apparatus for retrieving metal debris from a well bore | |
| CN107932215B (en) | A kind of processing method of thin-wall long and thin axial workpiece center hole | |
| US10845140B2 (en) | Method and tool for alignment of a gas block and rifle barrel | |
| CA2946193A1 (en) | Interchangeable multi-piece centralizer barrel | |
| US9429041B2 (en) | Turbomachine component displacement apparatus and method of use | |
| CN104439417A (en) | Drilling and positioning device for hollow pipes | |
| US9945209B2 (en) | Plunger assembly with expandable seal | |
| CN108994348B (en) | Spacing frock of processing bottom outlet | |
| CN203726438U (en) | Drill bit positioning tool | |
| US9770798B2 (en) | Mechanism for positioning a workpiece | |
| US8944188B2 (en) | Retaining arrangement, sub adaptor and/or drill spindle | |
| CN204366111U (en) | Hollow pipe drilling-hole positioning device | |
| CA2980119C (en) | Stabilizer devices for drilling tool housing | |
| US9687913B1 (en) | I. D. collet | |
| US3142139A (en) | Drill collar facing tool | |
| US20180313167A1 (en) | Systems And Methods For Threadably Connecting An Object With A Cylinder | |
| US2878626A (en) | Tool joint and valve seat grinder | |
| US20160017668A1 (en) | Precision polycrystalline diamond compact (pdc) pockets | |
| KR200475369Y1 (en) | Aligning apparatus for shaft of circulation water pump | |
| US8151690B2 (en) | Plunger with annular exterior seals and method of installing annular seals on an exterior surface of a plunger | |
| US2932195A (en) | Drilling jig |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20220421 |
|
| FZDE | Discontinued |
Effective date: 20220421 |