CA2393420C - Reamer shoe - Google Patents
Reamer shoe Download PDFInfo
- Publication number
- CA2393420C CA2393420C CA002393420A CA2393420A CA2393420C CA 2393420 C CA2393420 C CA 2393420C CA 002393420 A CA002393420 A CA 002393420A CA 2393420 A CA2393420 A CA 2393420A CA 2393420 C CA2393420 C CA 2393420C
- Authority
- CA
- Canada
- Prior art keywords
- reaming
- shoe
- reamer
- reamer shoe
- area
- 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 - Fee Related
Links
- 239000012530 fluid Substances 0.000 claims description 16
- 229910003460 diamond Inorganic materials 0.000 claims description 7
- 239000010432 diamond Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000005461 lubrication Methods 0.000 claims description 5
- 239000011800 void material Substances 0.000 claims description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 230000001050 lubricating effect Effects 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/14—Casing shoes for the protection of the bottom of the casing
-
- 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
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
Abstract
A reamer shoe (1) for mounting on a tubing string has a reaming area (5) supporting a plurality of discrete reaming members (6) typically formed as simple geometrical shapes. The reaming members provide complete circumferential coverage of the shoe body (2) but the individual reaming members are non-continuous and do not fully extend either longitudinally along or circumferentially around the reaming area on the shoe body. The invention therefore provides a reamer shoe for reaming a bore in preparation for receiving casing, which is effective on rotation or reciprocation, regardless of direction or speed.
Description
1 Reamer Shoe
2
3 The present invention relates to reamer shoe for use a in
4 drilled well bores as are typically utilised in oil and gas production.
7 After boring a region of an oil or gas well it is normal 8 to run tubing or "casing", into the well bore to act as a 9 lining. The casing is typically ru n into the well bore from the surface and the length of casing is often 11 referred to as a "casing string". The lining of the bore 12 can then be strengthened by introdu cing cement between 13 the external surface of the casing and the internal 14 surface of the well bore.
16 It is common for the casing to meet obstructions as it is 17 run through the well bore. These may be ledges which 18 form in the well bore material during boring, formation 19 washouts, or debris formed by unstable sections of the well bore wall collapsing. Such obstructions halt the 21 progress of the casing procedure and increase the risk of 22 the casing string jamming in the bore. To prevent or 23 minimise the effect of these obstructions a reamer shoe 1 is conventionally mounted on the lower end of the casing 2 string. The reamer shoe typically has a plurality of 3 reaming members around the circumference of the shoe 4 body, which remove any irregularities or obstructions from the wall of the bore and thereby facilitate the 6 subsequent passage of the casing string and aid 7 cementing.
9 In conventional reamer shoes, the reaming members extend parallel to the length of the shoe. Whilst this 11 arrangement allows the reaming members to come into 12 contact with the entire circumference of the bore well on 13 rotation of the shoe, complete circumferential coverage 14 of the bore well is not achieved when the shoe is reciprocated.
17 An attempt has been made to mitigate this problem in 18 International Patent Application PCT/GB99/00093 in the 19 name Downhole Products plc. This Application discloses a reamer shoe with reaming members which extend 21 longitudinally and helically around, as opposed to 22 longitudinally and parallel to, the shoe body. More 23 specifically the reaming members extend helically around 24 the body of the shoe in an opposite direction to the intended direction of rotation.
27 While this arrangement of reaming members gives full 360°
28 coverage during both reciprocating and rotation, the 29 efficiency of said members is very much dependent on the speed and also the direction of rotation. It will be 31 appreciated that the quality of reaming action will be 32 compromised at relatively high rotational speeds. In 33 addition, the reaming action of the shoe is designed to 1 be most efficient when the reaming members extend in the 2 opposite direction to rotation; therefore if the shoe was 3 rotated in the same direction as the reaming members 4 extend, either intentionally or accidentally, the risk of the reaming members "biting" into the wall and hence 6 becoming stuck in the bore would be increased. It would 7 therefore be a distinct advantage to provide a reamer 8 shoe which is equally effective on rotation and 9 reciprocation, and which provides an efficient reaming action regardless of the speed and direction of rotation.
12 It is an object of the present invention to provide a 13 reamer shoe for reaming a bore in preparation for 14 receiving casing, wherein said reaming shoe is equally effective on rotation or reciprocation.
17 It is a further object of the present invention to 18 provide a reamer shoe for reaming a bore in preparation 19 for receiving casing, wherein said reaming shoe is efficient at cleaning a bore when rotated, regardless of 21 the speed or direction of rotation.
23 It is a yet further object of the present invention to 24 provide a reamer shoe for reaming a bore in preparation for receiving casing, which is effective on rotation or 26 reciprocation, regardless of direction or speed, and 27 which is capable of covering the full 360° circumference 28 of the bore.
According to the present invention there is provided a 31 reamer shoe for mounting on a tubing string, the reamer 32 shoe having a reaming area supporting a plurality of 33 reaming members with each of the reaming members being 1 afforded a simple geometric shape, wherein the plurality 2 of reaming members have complete circumferential coverage 3 of the shoe body but the individual reaming members are 4 non-continuous and do not fully extend either longitudinally along or circumferentially around the 6 reaming area on the shoe body.
8 Optionally the reaming members are diamond shaped.
Alternatively the reaming members are square or circular 11 although any other simple geometrical shape may be 12 employed.
14 Preferably the reaming members are shaped in such a manner that they are separated by void areas which permit 16 the relative by pass of fluid over the reaming area, 17 between the reaming members.
19 Preferably the reamer shoe has a plurality of flow by areas or flow ports to allow lubrication of the shoe.
22 Preferably the reaming members are made of a hard wearing 23 and resistant material such as tungsten carbide or 24 polycrystalline diamond, although any other suitable material may be used.
27 Preferably the reaming members are securely attached to 28 the shoe body by a standard technique such as welding or 29 mechanical locking although any other suitable fixing means could be used.
32 Preferably the reamer shoe has connection means for 33 mounting the reamer shoe on a tubing string.
7 After boring a region of an oil or gas well it is normal 8 to run tubing or "casing", into the well bore to act as a 9 lining. The casing is typically ru n into the well bore from the surface and the length of casing is often 11 referred to as a "casing string". The lining of the bore 12 can then be strengthened by introdu cing cement between 13 the external surface of the casing and the internal 14 surface of the well bore.
16 It is common for the casing to meet obstructions as it is 17 run through the well bore. These may be ledges which 18 form in the well bore material during boring, formation 19 washouts, or debris formed by unstable sections of the well bore wall collapsing. Such obstructions halt the 21 progress of the casing procedure and increase the risk of 22 the casing string jamming in the bore. To prevent or 23 minimise the effect of these obstructions a reamer shoe 1 is conventionally mounted on the lower end of the casing 2 string. The reamer shoe typically has a plurality of 3 reaming members around the circumference of the shoe 4 body, which remove any irregularities or obstructions from the wall of the bore and thereby facilitate the 6 subsequent passage of the casing string and aid 7 cementing.
9 In conventional reamer shoes, the reaming members extend parallel to the length of the shoe. Whilst this 11 arrangement allows the reaming members to come into 12 contact with the entire circumference of the bore well on 13 rotation of the shoe, complete circumferential coverage 14 of the bore well is not achieved when the shoe is reciprocated.
17 An attempt has been made to mitigate this problem in 18 International Patent Application PCT/GB99/00093 in the 19 name Downhole Products plc. This Application discloses a reamer shoe with reaming members which extend 21 longitudinally and helically around, as opposed to 22 longitudinally and parallel to, the shoe body. More 23 specifically the reaming members extend helically around 24 the body of the shoe in an opposite direction to the intended direction of rotation.
27 While this arrangement of reaming members gives full 360°
28 coverage during both reciprocating and rotation, the 29 efficiency of said members is very much dependent on the speed and also the direction of rotation. It will be 31 appreciated that the quality of reaming action will be 32 compromised at relatively high rotational speeds. In 33 addition, the reaming action of the shoe is designed to 1 be most efficient when the reaming members extend in the 2 opposite direction to rotation; therefore if the shoe was 3 rotated in the same direction as the reaming members 4 extend, either intentionally or accidentally, the risk of the reaming members "biting" into the wall and hence 6 becoming stuck in the bore would be increased. It would 7 therefore be a distinct advantage to provide a reamer 8 shoe which is equally effective on rotation and 9 reciprocation, and which provides an efficient reaming action regardless of the speed and direction of rotation.
12 It is an object of the present invention to provide a 13 reamer shoe for reaming a bore in preparation for 14 receiving casing, wherein said reaming shoe is equally effective on rotation or reciprocation.
17 It is a further object of the present invention to 18 provide a reamer shoe for reaming a bore in preparation 19 for receiving casing, wherein said reaming shoe is efficient at cleaning a bore when rotated, regardless of 21 the speed or direction of rotation.
23 It is a yet further object of the present invention to 24 provide a reamer shoe for reaming a bore in preparation for receiving casing, which is effective on rotation or 26 reciprocation, regardless of direction or speed, and 27 which is capable of covering the full 360° circumference 28 of the bore.
According to the present invention there is provided a 31 reamer shoe for mounting on a tubing string, the reamer 32 shoe having a reaming area supporting a plurality of 33 reaming members with each of the reaming members being 1 afforded a simple geometric shape, wherein the plurality 2 of reaming members have complete circumferential coverage 3 of the shoe body but the individual reaming members are 4 non-continuous and do not fully extend either longitudinally along or circumferentially around the 6 reaming area on the shoe body.
8 Optionally the reaming members are diamond shaped.
Alternatively the reaming members are square or circular 11 although any other simple geometrical shape may be 12 employed.
14 Preferably the reaming members are shaped in such a manner that they are separated by void areas which permit 16 the relative by pass of fluid over the reaming area, 17 between the reaming members.
19 Preferably the reamer shoe has a plurality of flow by areas or flow ports to allow lubrication of the shoe.
22 Preferably the reaming members are made of a hard wearing 23 and resistant material such as tungsten carbide or 24 polycrystalline diamond, although any other suitable material may be used.
27 Preferably the reaming members are securely attached to 28 the shoe body by a standard technique such as welding or 29 mechanical locking although any other suitable fixing means could be used.
32 Preferably the reamer shoe has connection means for 33 mounting the reamer shoe on a tubing string.
5 Most preferably said connection means are threaded end connections which can mate with corresponding connection means on the casing.
Preferably the reaming shoe has an internal diameter which is at least equal to, or greater than the internal diameter of the casing.
Preferably the reamer shoe comprises a stabiliser or centralises.
Preferably the dimensions of the reamer shoe are not restricted and could be adapted to be suitable for use with any casing equipment.
In another aspect, the invention provides a method of forming a wellbore, the method comprising positioning a reamer shoe in the wellbore, the reamer shoe including a reaming area having plurality of geometric non-continuous cutting members, lubricating the reamer shoe by introducing fluid through at least one fluid port located above the reaming area and at least one fluid port located below the reaming area, rotating the reamer shoe in a first direction, and centering the reamer shoe in the wellbore by emoloying a centralizes formed on the reamer shoe, wherein the centralizes is disposed between the reaming area and the at least one fluid port located above the reaming area.
In another aspect, the invention provides a reamer shoe for mounting on a tubing string, the reamer shoe comprising a shoe body having a bore, a reaming area along the shoe body supporting at Sa least one reaming member, a plurality of flow ports disposed within the shoe body below the reaming area to provide fluid communication between the bore and the at least one reaming member and to allow lubrication of the shoe, at least one flow part above the reaming area to further facilitate lubrication of the reamer shoe, and a centralizes disposed on the shoe body, wherein the centralizes is disposed between the reaming area and the at least one fluid port located above the reaming area.
An example embodiment of the invention will now be illustrated with reference to Figure 1 which illustrates a reamer shoe in accordance with the present invention.
Referring to Figure 1 a reamer shoe, generally depicted at l, is comprised of a cylindrical body 2 which can be mounted on the lower end of a casing string (not shown).
Typically mounting is achieved using threaded end connections 3 and a respective fit thread protector 4 located at the rear of the body 2 which mate with the casing.
The reamer shoe 1 further comprises a reaming area 5 which supports a plurality of reaming members 6. The reaming members 6 are constructed from a hard resistant material such as polycrystalline diamond compact or tungsten carbide, or a combination of the two materials.
Preferably the reaming shoe has an internal diameter which is at least equal to, or greater than the internal diameter of the casing.
Preferably the reamer shoe comprises a stabiliser or centralises.
Preferably the dimensions of the reamer shoe are not restricted and could be adapted to be suitable for use with any casing equipment.
In another aspect, the invention provides a method of forming a wellbore, the method comprising positioning a reamer shoe in the wellbore, the reamer shoe including a reaming area having plurality of geometric non-continuous cutting members, lubricating the reamer shoe by introducing fluid through at least one fluid port located above the reaming area and at least one fluid port located below the reaming area, rotating the reamer shoe in a first direction, and centering the reamer shoe in the wellbore by emoloying a centralizes formed on the reamer shoe, wherein the centralizes is disposed between the reaming area and the at least one fluid port located above the reaming area.
In another aspect, the invention provides a reamer shoe for mounting on a tubing string, the reamer shoe comprising a shoe body having a bore, a reaming area along the shoe body supporting at Sa least one reaming member, a plurality of flow ports disposed within the shoe body below the reaming area to provide fluid communication between the bore and the at least one reaming member and to allow lubrication of the shoe, at least one flow part above the reaming area to further facilitate lubrication of the reamer shoe, and a centralizes disposed on the shoe body, wherein the centralizes is disposed between the reaming area and the at least one fluid port located above the reaming area.
An example embodiment of the invention will now be illustrated with reference to Figure 1 which illustrates a reamer shoe in accordance with the present invention.
Referring to Figure 1 a reamer shoe, generally depicted at l, is comprised of a cylindrical body 2 which can be mounted on the lower end of a casing string (not shown).
Typically mounting is achieved using threaded end connections 3 and a respective fit thread protector 4 located at the rear of the body 2 which mate with the casing.
The reamer shoe 1 further comprises a reaming area 5 which supports a plurality of reaming members 6. The reaming members 6 are constructed from a hard resistant material such as polycrystalline diamond compact or tungsten carbide, or a combination of the two materials.
6 1 The reaming members 6 do not fully extend either 2 longitudinally along or circumferentially around the 3 reaming area 5 on the shoe body 2 that is, they are non 4 continuous, and are afforded a diamond shape in the present embodiment, although this is not restricted and 6 any other geometrical shape such as circles or squares
7 could be employed.
8
9 As the reaming members 6 are non-continuous, each individual member is separated from the surrounding 11 reaming member by void space 7. This void space 7 12 functions to allow the by-pass of fluid which is passed 13 through the bore well (not shown) over the reaming area 14 5. The body 2 also has an additional flow by area 8 and flow port 9 to allow fluid by pass to lubricate the 16 surfaces of the reaming shoe 1. The body 2 also 17 comprises a stabiliser or centraliser 10 which functions 18 to maintain the reaming shoe 1 in the centre of the well 19 bore (not shown).
21 In use, the reamer shoe 1 is mounted on the casing string 22 (not shown) relatively close to the first section of the 23 string. Upon reaching an obstruction or irregularity in 24 the bore wall the tool may be reciprocated or rotated as required, in order to remove or push aside the 26 obstruction in preparation for receiving casing. The 27 casing operation can then be continued.
29 The present invention is inherent with significant advantages in that the geometrical design of the reaming 31 members increases the efficiency of the reaming process 32 regardless of whether the shoe is rotated or 33 reciprocated. The tendency to "bite" into the wall of 1 the bore and become stuck, which is often seen with 2 conventional reaming blades which extend around the body 3 of the shoe, is minimised.
A further advantage is that, unlike the reaming members 6 known to the art, which conventionally extend parallel to 7 or helically around the reamer shoe, the reaming members 8 of the present invention are geometric and non 9 continuous, and therefore have no direction as such. On rotation, the reaming members of the present invention 11 are therefore effective regardless of whether the shoe is 12 rotated in a clockwise or anti-clockwise direction.
14 Further modifications and improvements may be incorporated without departing from the scope of the 16 invention herein intended.
21 In use, the reamer shoe 1 is mounted on the casing string 22 (not shown) relatively close to the first section of the 23 string. Upon reaching an obstruction or irregularity in 24 the bore wall the tool may be reciprocated or rotated as required, in order to remove or push aside the 26 obstruction in preparation for receiving casing. The 27 casing operation can then be continued.
29 The present invention is inherent with significant advantages in that the geometrical design of the reaming 31 members increases the efficiency of the reaming process 32 regardless of whether the shoe is rotated or 33 reciprocated. The tendency to "bite" into the wall of 1 the bore and become stuck, which is often seen with 2 conventional reaming blades which extend around the body 3 of the shoe, is minimised.
A further advantage is that, unlike the reaming members 6 known to the art, which conventionally extend parallel to 7 or helically around the reamer shoe, the reaming members 8 of the present invention are geometric and non 9 continuous, and therefore have no direction as such. On rotation, the reaming members of the present invention 11 are therefore effective regardless of whether the shoe is 12 rotated in a clockwise or anti-clockwise direction.
14 Further modifications and improvements may be incorporated without departing from the scope of the 16 invention herein intended.
Claims (14)
1. A method of forming a wellbore, the method comprising:
positioning a reamer shoe in the wellbore, the reamer shoe including a reaming area having plurality of geometric non-continuous cutting members;
lubricating the reamer shoe by introducing fluid through at least one fluid port located above the reaming area and at least one fluid port located below the reaming area;
rotating the reamer shoe in a first direction; and centering the reamer shoe in the wellbore by emoloying a centralizer formed on the reamer shoe, wherein the centralizer is disposed between the reaming area and the at least one fluid port located above the reaming area.
positioning a reamer shoe in the wellbore, the reamer shoe including a reaming area having plurality of geometric non-continuous cutting members;
lubricating the reamer shoe by introducing fluid through at least one fluid port located above the reaming area and at least one fluid port located below the reaming area;
rotating the reamer shoe in a first direction; and centering the reamer shoe in the wellbore by emoloying a centralizer formed on the reamer shoe, wherein the centralizer is disposed between the reaming area and the at least one fluid port located above the reaming area.
2. The method of claim 1, wherein the plurality of reaming members are diamond shaped.
3. A reamer shoe for mounting on a tubing string, the reamer shoe comprising:
a shoe body having a bore;
a reaming area along the shoe body supporting at least one reaming member;
a plurality of flow ports disposed within the shoe body below the reaming area to provide fluid communication between the bore and the at least one reaming member and to allow lubrication of the shoe;
at least one flow part above the reaming area to further facilitate lubrication of the reamer shoe; and a centralizer disposed on the shoe body, wherein the centralizer is disposed between the reaming area and the at least one fluid port located above the reaming area.
a shoe body having a bore;
a reaming area along the shoe body supporting at least one reaming member;
a plurality of flow ports disposed within the shoe body below the reaming area to provide fluid communication between the bore and the at least one reaming member and to allow lubrication of the shoe;
at least one flow part above the reaming area to further facilitate lubrication of the reamer shoe; and a centralizer disposed on the shoe body, wherein the centralizer is disposed between the reaming area and the at least one fluid port located above the reaming area.
4. The reamer shoe of claim 3, wherein the at least one reaming member provides complete circumferential coverage of the shoe body.
5. The reamer shoe of claim 4, wherein each reaming member is non-continuous and does not fully extend either longitudinally along or circumferentially around the reaming area on the shoe body.
6. The reamer shoe of any one of claims 3 to 5, wherein the at least one reaming member is arranged to ream in an equally effective manner whether the tubing string is rotated in a clockwise direction, rotated in an anti-clockwise direction, or axially reciprocated.
7. The reamer shoe of any one of claims 3 to 6, wherein the at least one reaming member is diamond shaped.
8. The reamer shoe of any one of claims 3 to 6, wherein the at least one reaming member is formed as a discrete geometrical shape.
9. The reamer shoe of any one of claims 3 to 8, wherein each reaming member is separated by a void area to permit a by-pass of fluid therebetween.
10. The reamer shoe of any one of claims 3 to 9, wherein the at least one reaming member is at least partially fabricated from a hard material comprising tungsten carbide, polycrystalline diamond, or combinations thereof.
11. The reamer shoe of any one of claims 3 to 10, wherein the at least one reaming member is welded to the shoe body.
12. The reamer shoe of any one of claims 3 to 10, wherein the at least one reaming member is mechanically locked to the shoe body.
13. The reamer shoe of any one of claims 3 to 12, further comprising a threaded end for mounting the reamer shoe on the tubing string.
14. The reamer shoe of any one of claims 3 to 13, wherein the bore has an internal diameter which is at least equal to or greater than an internal diameter of the tubing string.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9929000.9 | 1999-12-09 | ||
| GBGB9929000.9A GB9929000D0 (en) | 1999-12-09 | 1999-12-09 | Reamer shoe |
| PCT/GB2000/004704 WO2001042617A1 (en) | 1999-12-09 | 2000-12-11 | Reamer shoe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2393420A1 CA2393420A1 (en) | 2001-06-14 |
| CA2393420C true CA2393420C (en) | 2007-01-30 |
Family
ID=10865923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002393420A Expired - Fee Related CA2393420C (en) | 1999-12-09 | 2000-12-11 | Reamer shoe |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6983811B2 (en) |
| EP (1) | EP1235971B1 (en) |
| AU (1) | AU783402B2 (en) |
| CA (1) | CA2393420C (en) |
| DE (1) | DE60024484D1 (en) |
| GB (1) | GB9929000D0 (en) |
| NO (1) | NO326461B1 (en) |
| WO (1) | WO2001042617A1 (en) |
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| WO2004079150A2 (en) * | 2003-03-05 | 2004-09-16 | Weatherford/Lamb, Inc. | Full bore lined wellbores |
| US7128144B2 (en) | 2003-03-07 | 2006-10-31 | Halliburton Energy Services, Inc. | Formation testing and sampling apparatus and methods |
| US7395882B2 (en) | 2004-02-19 | 2008-07-08 | Baker Hughes Incorporated | Casing and liner drilling bits |
| US7954570B2 (en) | 2004-02-19 | 2011-06-07 | Baker Hughes Incorporated | Cutting elements configured for casing component drillout and earth boring drill bits including same |
| US7624818B2 (en) | 2004-02-19 | 2009-12-01 | Baker Hughes Incorporated | Earth boring drill bits with casing component drill out capability and methods of use |
| GB2446742B (en) * | 2004-02-25 | 2008-10-01 | Caledus Ltd | Improved shoe |
| GB0404170D0 (en) * | 2004-02-25 | 2004-03-31 | Synergetech Ltd | Improved shoe |
| GB0505166D0 (en) * | 2005-03-14 | 2005-04-20 | Stewart Arthur | Multi-function downhole tool |
| GB0505163D0 (en) * | 2005-03-14 | 2005-04-20 | Stewart Arthur | Downhole apparatus |
| US20060201670A1 (en) * | 2005-03-14 | 2006-09-14 | Stable Services Limited | Downhole apparatus |
| US7621351B2 (en) * | 2006-05-15 | 2009-11-24 | Baker Hughes Incorporated | Reaming tool suitable for running on casing or liner |
| GB0615135D0 (en) * | 2006-07-29 | 2006-09-06 | Futuretec Ltd | Running bore-lining tubulars |
| GB0620272D0 (en) * | 2006-10-13 | 2006-11-22 | Caledus Ltd | Method and apparatus for running tubulars |
| US8245797B2 (en) | 2007-10-02 | 2012-08-21 | Baker Hughes Incorporated | Cutting structures for casing component drillout and earth-boring drill bits including same |
| US7954571B2 (en) | 2007-10-02 | 2011-06-07 | Baker Hughes Incorporated | Cutting structures for casing component drillout and earth-boring drill bits including same |
| US8025107B2 (en) * | 2008-05-15 | 2011-09-27 | Longyear Tm, Inc. | Reamer with polycrystalline diamond compact inserts |
| GB2461312B (en) * | 2008-06-27 | 2012-06-13 | Deep Casing Tools Ltd | Reaming tool |
| US8887836B2 (en) * | 2009-04-15 | 2014-11-18 | Baker Hughes Incorporated | Drilling systems for cleaning wellbores, bits for wellbore cleaning, methods of forming such bits, and methods of cleaning wellbores using such bits |
| US8074749B2 (en) * | 2009-09-11 | 2011-12-13 | Weatherford/Lamb, Inc. | Earth removal member with features for facilitating drill-through |
| GB0918358D0 (en) | 2009-10-20 | 2009-12-02 | Futuretec Ltd | Wellbore completion |
| US8191655B2 (en) * | 2009-12-16 | 2012-06-05 | Halliburton Energy Services, Inc. | Apparatus and method for reaming a wellbore during the installation of a tubular string |
| DK2655784T3 (en) | 2010-12-22 | 2017-02-20 | Weatherford Tech Holdings Llc | EARTH REMOVAL WITH FUNCTIONS TO EASY THROUGH |
| US8833446B2 (en) | 2011-01-25 | 2014-09-16 | Halliburton Energy Services, Inc. | Composite bow centralizer |
| US8678096B2 (en) | 2011-01-25 | 2014-03-25 | Halliburton Energy Services, Inc. | Composite bow centralizer |
| US8573296B2 (en) | 2011-04-25 | 2013-11-05 | Halliburton Energy Services, Inc. | Limit collar |
| US9074430B2 (en) | 2011-09-20 | 2015-07-07 | Halliburton Energy Services, Inc. | Composite limit collar |
| US10316595B2 (en) | 2014-11-13 | 2019-06-11 | Z Drilling Holdings, Inc. | Method and apparatus for reaming and/or stabilizing boreholes in drilling operations |
| CN104563884B (en) * | 2014-12-29 | 2016-09-28 | 叶波 | Reamer with cylinder fraising formula belt |
| GB201519636D0 (en) * | 2015-11-06 | 2015-12-23 | Smart Stabilizer Systems Ltd | Stabilizer for a steerable drilling system |
| US9375765B1 (en) * | 2015-10-09 | 2016-06-28 | Crossford International, Llc | Tube scraper projectile |
| USD786645S1 (en) | 2015-11-03 | 2017-05-16 | Z Drilling Holdings, Inc. | Reamer |
| GB2564825B (en) | 2016-08-17 | 2021-09-15 | Halliburton Energy Services Inc | Modular reaming device |
| CA2961629A1 (en) | 2017-03-22 | 2018-09-22 | Infocus Energy Services Inc. | Reaming systems, devices, assemblies, and related methods of use |
| EP4303396A1 (en) | 2022-07-06 | 2024-01-10 | Downhole Products Limited | Rasping shoe for non-rotational deployment of casing string |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1153311A (en) * | 1914-06-08 | 1915-09-14 | Rickert Shafer Company | Drive for machine-tools. |
| US3011556A (en) * | 1957-09-20 | 1961-12-05 | David M Best | Casing scraper |
| US3268274A (en) * | 1964-05-25 | 1966-08-23 | Exxon Production Research Co | Spiral blade stabilizer |
| CA1154430A (en) * | 1981-08-21 | 1983-09-27 | Paul Knutsen | Integral blade cylindrical gauge stabilizer-reamer |
| US4467879A (en) * | 1982-03-29 | 1984-08-28 | Richard D. Hawn, Jr. | Well bore tools |
| GB2166177A (en) * | 1984-10-26 | 1986-04-30 | Metal X Corp Of Texas | Sleeve-type stabilizer |
| US5220964A (en) * | 1991-09-23 | 1993-06-22 | The Charles Machine Works, Inc. | Downhole compaction and stabilization back reamer and drill bit |
| GB9504968D0 (en) * | 1995-03-11 | 1995-04-26 | Brit Bit Limited | Improved casing shoe |
| US5697442A (en) * | 1995-11-13 | 1997-12-16 | Halliburton Company | Apparatus and methods for use in cementing a casing string within a well bore |
| US5957223A (en) * | 1997-03-05 | 1999-09-28 | Baker Hughes Incorporated | Bi-center drill bit with enhanced stabilizing features |
| US6401820B1 (en) * | 1998-01-24 | 2002-06-11 | Downhole Products Plc | Downhole tool |
-
1999
- 1999-12-09 GB GBGB9929000.9A patent/GB9929000D0/en not_active Ceased
-
2000
- 2000-12-11 US US10/149,096 patent/US6983811B2/en not_active Expired - Fee Related
- 2000-12-11 CA CA002393420A patent/CA2393420C/en not_active Expired - Fee Related
- 2000-12-11 EP EP00985502A patent/EP1235971B1/en not_active Expired - Lifetime
- 2000-12-11 DE DE60024484T patent/DE60024484D1/en not_active Expired - Lifetime
- 2000-12-11 AU AU21918/01A patent/AU783402B2/en not_active Ceased
- 2000-12-11 WO PCT/GB2000/004704 patent/WO2001042617A1/en active IP Right Grant
-
2002
- 2002-05-28 NO NO20022503A patent/NO326461B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| NO20022503L (en) | 2002-05-28 |
| CA2393420A1 (en) | 2001-06-14 |
| NO20022503D0 (en) | 2002-05-28 |
| GB9929000D0 (en) | 2000-02-02 |
| AU783402B2 (en) | 2005-10-20 |
| WO2001042617A1 (en) | 2001-06-14 |
| DE60024484D1 (en) | 2006-01-05 |
| US20030075364A1 (en) | 2003-04-24 |
| EP1235971A1 (en) | 2002-09-04 |
| NO326461B1 (en) | 2008-12-08 |
| US6983811B2 (en) | 2006-01-10 |
| EP1235971B1 (en) | 2005-11-30 |
| AU2191801A (en) | 2001-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20171211 |