EP1811125B1 - Alésoir pour trou de forage - Google Patents
Alésoir pour trou de forage Download PDFInfo
- Publication number
- EP1811125B1 EP1811125B1 EP06001056A EP06001056A EP1811125B1 EP 1811125 B1 EP1811125 B1 EP 1811125B1 EP 06001056 A EP06001056 A EP 06001056A EP 06001056 A EP06001056 A EP 06001056A EP 1811125 B1 EP1811125 B1 EP 1811125B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reamer
- vibration damping
- drill
- hole
- cut
- 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.)
- Active
Links
- 238000013016 damping Methods 0.000 claims abstract description 20
- 238000005553 drilling Methods 0.000 claims abstract description 19
- 239000012530 fluid Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000011435 rock Substances 0.000 claims description 4
- 150000001247 metal acetylides Chemical class 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000003381 stabilizer Substances 0.000 abstract description 5
- 230000000087 stabilizing effect Effects 0.000 abstract description 3
- 239000003129 oil well Substances 0.000 abstract 1
- 238000005755 formation reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000007704 transition 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
- 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
- E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
- E21B10/30—Longitudinal axis roller reamers, e.g. reamer stabilisers
-
- 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
Definitions
- the present invention relates to a vibration damping reamer to be used in the stabilizing of a drilling tool during operation.
- the vibration damping reamer of the present invention is directed to an arrangement that will damp vibrations arising from use of the drill.
- the second function of a reamer is to keep the drill stem in the centre of the hole, that is, the reamer acts as a stabilizer.
- Stabilizers are positioned above the drill bit to ensure that the drill bit and stabilizer assembly drill a straight hole of the desired diameter. Maintaining the drill stem centered has many beneficial effects, its primary one being minimizing unintentional hole-angle directional drilling.
- a stabilizer thereby extends the life of the drill bit by maintaining the diameter of the hole to the original specification.
- Vibrations induced in the assembly may be lateral vibrations, that is, the assembly moves from side to side during operation; vibrations may also be axial with movement occurring generally vertically, or within the hole. Additionally, torsional vibrations occur resulting from the rotation of the assembly within the hole. Vibrations. Such vibrations may cause damage to the drill assembly reducing the life thereof.
- the present invention provides the public with an alternative to existing reamers.
- a vibration damping reamer for use in association with a drill stem and a drill bit in drilling a hole in a rock formation, said vibration damping reamer having:-
- the reamer By arranging axially spaced reaming bands along the length of the cylindrical body, the reamer is thus is use, brought to bear against the drilled hole-wall at axially spaced positions. The surface of the reamer bears against the hole-wall thereby ensuring any vibrations induced in the tool are damped.
- the adoption of two or more bearing points, represented by the wear surfaces provides for stability in the position of the reamer and thereby the drill assembly.
- reaming bands axially spaced along the reamer part are separated by a region of reduced diameter.
- said wear surfaces studded with a plurality of hardwearing studs, for example carbide surface studs.
- the vibration damping reamer of the present invention may be embodied as either a near bit vibration damping reamer in which the reamer part is adjacent the drill bit in use, or alternatively as a string reamer in which the reaming part is spaced along the drilling string from the drill bit.
- said spaced apart axially extending spiral flutes cut into said outer surface are cut at a high angle relative to thereby minimize the extent of helical movement in fluid moving in the flutes.
- the spaced apart axially extending spiral flutes cut into said outer surface are cut, and the distance between adjacent axially spaced wear surfaces are arranged such that, around the circumference of the reamer, a wear surface engages the surrounding hole wall at some point.
- vibration damping reamer 10 formed in accordance with the present invention.
- the reamer 10 is shown to advantage in perspective view in figure 1 .
- the reamer 10 is used in association with a drill stem and a drill bit in drilling a hole in a rock formation. In the orientation shown a drill is located below the reamer 10.
- the geometry of the reamer 10 is such a drill bit would be located below the tool 10 with the top of the drill hole beyond the top of the page.
- the vibration damping reamer 10 includes a body 12 having a through going bore 14 for passage of drilling fluids there through.
- the bore 14 is of appropriate size to allow smooth passage of drilling fluids there through.
- the body is divided into a generally cylindrical upper part 16 adapted for connection to a drill string (not shown) and a generally cylindrical lowermost reamer part 18 of diameter wider than the upper part 16.
- the upper part 16 has a smooth surface whereas the lowermost reamer part 18 has a complex surfaced described in detail below.
- the lowermost reamer part 18 terminates in an inwardly tapered bottom section 20. The diameter of the bottom section 20 is adjusted so as to be consistent with the size of drill bit to which the reamer 10 is attached.
- the reamer part 18 includes an uppermost shoulder section 22 that allows the diameter of the tool as a whole to be increased from the narrower upper section 16 to the wider lower section 18.
- spiral flutes 28 are cut into the outer surface of the lower reamer part 16. As seen in the drawings the spiral flutes 28 are evenly spaced around the circumference of the tool 10. The spiral flutes 28 serve to collect drilling fluid and entrained rock material collected from a hole during a drilling operation and to deliver the material to the surface. It can also be observed from figure 5 that the spiral flutes 28 have a slightly squared off cross-section. It has been found in practice that such an arrangement provides for the smoothest transition of fluid through the flutes 28. Careful inspection of the drawings also reveals that the flutes 28 are cut at a relatively close angle to the vertical. Again this has been found in practice to yield the smoothest delivery of material from the cutting face to the surface.
- the wear surfaces 24, 25 are each studded with an array of hardwearing carbide studs 30.
- the wear surfaces 24, 25 and studs 30 together form a pair of reaming bands axially spaced along the reamer part of the tool.
- the studs 30 represent the widest part of the tool 10 and, in use, engage the wall of the drilled holes and bear against the drill hole surface to thereby provide the vibration damping effect.
- the fact that the tool 10 is supported against the hole-face in two spaced apart locations provides a considerable mechanical advantage. By having two points of contact the tool is supported for more securely and the effect of vibration is easily reduced.
- the arrangement as shown in the drawings provides for substantially 360° contact between a reaming surface and the hole-wall. This arises because of the relative sizes of the wear surfaces and the spiral flutes 28.
- a lower left hand stud 32 in one part of the upper wear surface 24 lies almost adjacent a stud 34 in the upper right hand corner of one part of the lower wear surface 25.
- the wear surfaces are able to securely embed themselves in the wall of the drilled hole and thus substantially damp and vibrations that arise through use of the tool.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Claims (4)
- Trépan-aléseur amortisseur de vibrations (10) destiné à être utilisé en association avec une colonne de forage et un trépan de forage pour forer un trou dans une formation rocheuse, ledit trépan-aléseur amortisseur de vibrations (10) ayant un corps (12) doté d'un perçage traversant (14) pour le passage de fluides de forage à travers lui-même, ledit corps (12) ayant une partie supérieure (16) généralement cylindrique adaptée pour être connectée à une colonne de forage, et une partie aléseuse (18) inférieure généralement cylindrique d'un diamètre supérieur à ladite partie supérieure (16), ladite partie aléseuse (18) incluant une pluralité de surfaces d'usure situées sur une surface extérieure de celle-ci, qui viennent porter contre la surface avoisinante d'un trou de forage, et une pluralité de cannelures spiralées (28), s'étendant axialement et espacées les unes des autres, taillées dans ladite surface extérieure, dans lequel lesdites surfaces d'usure incluent deux ou plusieurs bandes aléseuses (24, 25) axialement espacées le long de la partie aléseuse (18), caractérisé en ce que lesdites bandes aléseuses (24, 25) axialement espacées le long de la partie aléseuse (18) sont séparées par une région (26) de diamètre réduit.
- Trépan-aléseur amortisseur de vibrations (10) selon la revendication 1, caractérisé en ce que lesdites surfaces d'usure sont cloutées avec une pluralité d'ergots résistants à l'usure (30, 32, 34), par exemple des ergots à la surface en carbure.
- Trépan-aléseur amortisseur de vibrations (10) selon la revendication 1 ou 2, caractérisé en ce que lesdites cannelures spiralées (28) s'étendant axialement et espacées les unes des autres taillées dans ladite surface extérieure sont taillées sous un angle élevé.
- Trépan-aléseur amortisseur de vibrations (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que lesdites cannelures spiralées (28) s'étendant axialement et espacées les unes des autres taillées dans ladite surface extérieure sont taillées de telle façon que la surface d'usure avec les parties en carbure en projection sur la circonférence du trépan-aléseur amortisseur de vibrations engage les parois du forage, et avec le mouvement de rotation et les vibrations dans l'espace confiné tridimensionnel, ces parties en carbure pénètrent effectivement la paroi du forage et maintiennent la colonne de forage exempte de vibrations dans l'espace confiné tridimensionnel, de sorte que l'augmentation de résistance provenant des parties en carbure en projection qui pénètrent dans les parois du forage amortit de manière significative les vibrations et ajoute une stabilité importante à la colonne de forage.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06001056A EP1811125B1 (fr) | 2006-01-18 | 2006-01-18 | Alésoir pour trou de forage |
DE602006003618T DE602006003618D1 (de) | 2006-01-18 | 2006-01-18 | Bohrlochräumer |
AT06001056T ATE414212T1 (de) | 2006-01-18 | 2006-01-18 | Bohrlochräumer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP06001056A EP1811125B1 (fr) | 2006-01-18 | 2006-01-18 | Alésoir pour trou de forage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1811125A1 EP1811125A1 (fr) | 2007-07-25 |
EP1811125B1 true EP1811125B1 (fr) | 2008-11-12 |
Family
ID=36385819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06001056A Active EP1811125B1 (fr) | 2006-01-18 | 2006-01-18 | Alésoir pour trou de forage |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1811125B1 (fr) |
AT (1) | ATE414212T1 (fr) |
DE (1) | DE602006003618D1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104612599A (zh) * | 2015-01-27 | 2015-05-13 | 大庆宏富来电气设备制造有限公司 | 抽油杆防偏磨耐磨扶正器 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008097843A2 (fr) * | 2007-02-02 | 2008-08-14 | Halliburton Energy Services, Inc. | Système et procédé orientables de pièce de foret rotatif |
US8162081B2 (en) | 2008-08-28 | 2012-04-24 | Varel International Ind., L.P. | Force balanced asymmetric drilling reamer and methods for force balancing |
GB201208286D0 (en) * | 2012-05-11 | 2012-06-20 | Tercel Ip Ltd | A downhole reaming assembly, tool and method |
US9273519B2 (en) | 2012-08-27 | 2016-03-01 | Tercel Ip Ltd. | Downhole dual cutting reamer |
US8607900B1 (en) * | 2012-08-27 | 2013-12-17 | LB Enterprises, LLC | Downhole tool engaging a tubing string between a drill bit and tubular for reaming a wellbore |
JP2014196655A (ja) * | 2013-03-05 | 2014-10-16 | 三菱マテリアル株式会社 | 掘削ビット |
CN104727758A (zh) * | 2013-12-20 | 2015-06-24 | 盐城市华谊石油机械有限公司 | 纳米金属扶正器 |
WO2017091241A1 (fr) * | 2015-11-23 | 2017-06-01 | COT Acquisition, LLC | Aléseur à rouleau |
CN113027362A (zh) * | 2021-03-03 | 2021-06-25 | 河南易发石油工程技术有限公司 | 一种钻井用清砂变流装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2217592A (en) * | 1938-08-01 | 1940-10-08 | Lgs Devices Corp | Well reamer |
CA1154430A (fr) * | 1981-08-21 | 1983-09-27 | Paul Knutsen | Outil de foration a lame incorporee avec calibre cylindrique stabilisateur de l'effort de rognage |
GB2133062A (en) * | 1982-12-03 | 1984-07-18 | Groom International Limited | Drilling tools |
GB2333542B (en) * | 1998-01-24 | 2002-12-11 | Downhole Products Plc | Downhole tool |
AU2002951839A0 (en) * | 2002-09-30 | 2002-10-24 | Transco Manufacturing Australia Pty Ltd | Combined reamer and drill bit stabiliser |
-
2006
- 2006-01-18 AT AT06001056T patent/ATE414212T1/de not_active IP Right Cessation
- 2006-01-18 EP EP06001056A patent/EP1811125B1/fr active Active
- 2006-01-18 DE DE602006003618T patent/DE602006003618D1/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104612599A (zh) * | 2015-01-27 | 2015-05-13 | 大庆宏富来电气设备制造有限公司 | 抽油杆防偏磨耐磨扶正器 |
Also Published As
Publication number | Publication date |
---|---|
EP1811125A1 (fr) | 2007-07-25 |
DE602006003618D1 (de) | 2008-12-24 |
ATE414212T1 (de) | 2008-11-15 |
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