EP1811125A1 - Alésoir pour trou de forage - Google Patents

Alésoir pour trou de forage Download PDF

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Publication number
EP1811125A1
EP1811125A1 EP06001056A EP06001056A EP1811125A1 EP 1811125 A1 EP1811125 A1 EP 1811125A1 EP 06001056 A EP06001056 A EP 06001056A EP 06001056 A EP06001056 A EP 06001056A EP 1811125 A1 EP1811125 A1 EP 1811125A1
Authority
EP
European Patent Office
Prior art keywords
reamer
hole
tool
drill
vibration damper
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.)
Granted
Application number
EP06001056A
Other languages
German (de)
English (en)
Other versions
EP1811125B1 (fr
Inventor
Adel Ali Bassal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Omni Oil Technologies
Original Assignee
Omni Oil Technologies
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Omni Oil Technologies filed Critical Omni Oil Technologies
Priority to EP06001056A priority Critical patent/EP1811125B1/fr
Priority to DE602006003618T priority patent/DE602006003618D1/de
Priority to AT06001056T priority patent/ATE414212T1/de
Publication of EP1811125A1 publication Critical patent/EP1811125A1/fr
Application granted granted Critical
Publication of EP1811125B1 publication Critical patent/EP1811125B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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 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
    • E21B17/10—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 first function that is provided by a reamer is to cut formations to enlarge the bored hole to the desired size, which may be the original size of the bit in the case where the drill bit wears to be under-gauged.
  • reamers are employed to cut formations because the bit does not always drill a true bore hole and because of slight lateral shifting which is inherent in the drilling operation, which shifting leaves ledges and other distortions.
  • 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 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.
EP06001056A 2006-01-18 2006-01-18 Alésoir pour trou de forage Active EP1811125B1 (fr)

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 true EP1811125A1 (fr) 2007-07-25
EP1811125B1 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 (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2118429A2 (fr) * 2007-02-02 2009-11-18 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
EP2801692A1 (fr) * 2013-05-08 2014-11-12 Tercel IP Ltd. Outil de fond s'engageant dans un train de tiges entre un trépan et tubulaire pour aléser un trou de forage
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
CN104736791A (zh) * 2012-05-11 2015-06-24 特塞尔Ip有限公司 井下组件、工具和方法
CN105102752A (zh) * 2013-03-05 2015-11-25 三菱综合材料株式会社 挖掘钻头
US9273519B2 (en) 2012-08-27 2016-03-01 Tercel Ip Ltd. Downhole dual cutting reamer
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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2217592A (en) * 1938-08-01 1940-10-08 Lgs Devices Corp Well reamer
US4385669A (en) * 1981-08-21 1983-05-31 Paul Knutsen Integral blade cylindrical gauge stabilizer reamer
GB2133062A (en) * 1982-12-03 1984-07-18 Groom International Limited Drilling tools
GB2333542A (en) * 1998-01-24 1999-07-28 Downhole Products Plc Tubing shoe with reaming members
WO2004029402A1 (fr) * 2002-09-30 2004-04-08 Transco Manufacturing Australia Pty Ltd Aleseur et stabilisateur de trepan combines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2217592A (en) * 1938-08-01 1940-10-08 Lgs Devices Corp Well reamer
US4385669A (en) * 1981-08-21 1983-05-31 Paul Knutsen Integral blade cylindrical gauge stabilizer reamer
GB2133062A (en) * 1982-12-03 1984-07-18 Groom International Limited Drilling tools
GB2333542A (en) * 1998-01-24 1999-07-28 Downhole Products Plc Tubing shoe with reaming members
WO2004029402A1 (fr) * 2002-09-30 2004-04-08 Transco Manufacturing Australia Pty Ltd Aleseur et stabilisateur de trepan combines

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2118429A4 (fr) * 2007-02-02 2014-07-09 Halliburton Energy Serv Inc Système et procédé orientables de pièce de foret rotatif
EP2118429A2 (fr) * 2007-02-02 2009-11-18 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
US9488008B2 (en) 2012-05-11 2016-11-08 Tercel Ip Ltd. Downhole assembly, tool and method
EP2847412B1 (fr) * 2012-05-11 2021-04-14 Tercel IP Limited Ensemble fond de puits, outil et procédé
CN104736791A (zh) * 2012-05-11 2015-06-24 特塞尔Ip有限公司 井下组件、工具和方法
CN104736791B (zh) * 2012-05-11 2017-09-08 特塞尔Ip有限公司 井下组件、工具和方法
US9284784B2 (en) 2012-05-11 2016-03-15 Tercel Ip Ltd. Downhole assembly, tool and method
US9273519B2 (en) 2012-08-27 2016-03-01 Tercel Ip Ltd. Downhole dual cutting reamer
CN105102752B (zh) * 2013-03-05 2017-11-21 三菱综合材料株式会社 挖掘钻头
CN105102752A (zh) * 2013-03-05 2015-11-25 三菱综合材料株式会社 挖掘钻头
US10006251B2 (en) 2013-03-05 2018-06-26 Mitsubishi Materials Corproation Digging bit
EP2801692A1 (fr) * 2013-05-08 2014-11-12 Tercel IP Ltd. Outil de fond s'engageant dans un train de tiges entre un trépan et tubulaire pour aléser un trou de forage
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

Also Published As

Publication number Publication date
EP1811125B1 (fr) 2008-11-12
ATE414212T1 (de) 2008-11-15
DE602006003618D1 (de) 2008-12-24

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