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WO2000058595A1 - Rouleau de stabilisateur aleseur - Google Patents

Rouleau de stabilisateur aleseur Download PDF

Info

Publication number
WO2000058595A1
WO2000058595A1 PCT/AU2000/000232 AU0000232W WO0058595A1 WO 2000058595 A1 WO2000058595 A1 WO 2000058595A1 AU 0000232 W AU0000232 W AU 0000232W WO 0058595 A1 WO0058595 A1 WO 0058595A1
Authority
WO
WIPO (PCT)
Prior art keywords
roller
axis
rotation
stabiliser
cutters
Prior art date
Application number
PCT/AU2000/000232
Other languages
English (en)
Inventor
Adel Ali Bassal
Original Assignee
Gearhart Australia Ltd.
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 Gearhart Australia Ltd. filed Critical Gearhart Australia Ltd.
Priority to AU32638/00A priority Critical patent/AU3263800A/en
Publication of WO2000058595A1 publication Critical patent/WO2000058595A1/fr

Links

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

Definitions

  • the present invention relates to a reaming stabiliser roller that reams and stabilises the operation of a drill string in a borehole drilling through the earth's surface.
  • boreholes are initially drilled as vertical holes and may then curve to an inclined or horizontal direction. Maintaining of complete control is very important but very difficult to achieve.
  • a borehole drill may, for example, include three cutters or reamers, which are circumferentially spaced from one another. When the drill bit is inclined to the original axis, the space between the cutters can cause erratic or irregular operation in negotiating a curve.
  • a stabiliser tool that may have projecting wear pad assemblies or rollers circumferentially spaced around the axis of the stabiliser tool, each roller having hard inserts.
  • roller reamers which have different cutter types depending on the formation that is being drilled through and which assist in smoothing or finishing the borehole. For example blade type or sharp cutters on the roller reamers are generally used on soft formations (such as limestone or shale), whilst button or domed type cutters are used on hard and abrasive formations where tungsten carbide inserts act as teeth to fracture the formation.
  • roller reamers provide that function, by having cutters that protrude from the roller and accordingly assist in shaping the borehole.
  • a typical configuration of a drill string includes a drill bit, above which are located the roller reamers (called aggressive roller reamers), and above which are located either roller stabilisers (also known as non-aggressive roller reamers) or wear pad stabilisers.
  • the stabilisers generally extend along the whole drill string typically every 30 metres. The choice of either wear pads or roller stabilisers depends on the formation one is passing through and whether sufficient torque can be provided.
  • roller stabilisers are to be used. However, as already discussed, if these find themselves in undersize holes they can become jammed. The choice as to the combinations of roller reamers and/or stabiliser tools will therefore depend on each individual borehole, where the using an inappropriate configuration can lead to loss of a drill string.
  • a roller for use with a roller stabiliser used in boreholes, said roller including an outer surface symmetrical to the axis of rotation, said outer surface having a first surface that is generally parallel to said axis of rotation and a second surface that converges towards said axis of rotation, said first surface including a plurality of hard inserts, and said second surface including a plurality of cutters.
  • said second surface is located at one end of said roller.
  • the second surface converges at an angle generally some 9-10 degrees.
  • said cutters are domed inserts manufactured from tungsten carbide. They cut through formation by pressing and fracturing the formation they are in contact with.
  • cutters are arranged circumferentially on a plane around said axis of rotation.
  • the cutters are smooth type cutters. These types of cutters are used in soft formations such as limestone or shale.
  • cutters are blade type cutters. These types of cutters are also used in soft formations such as limestone or shale.
  • the hard inserts on the first surface thereof are tungsten carbide inserts whose outer surface is generally flush with the outer surface of said rollers.
  • the first surface further includes a plurality of helical grooves, with said inserts positioned in a helical arrangement on the shoulders between said grooves.
  • each shoulder has at least 8 inserts.
  • each said roller has a further third surface that converges towards the axis of rotation.
  • the second and third surface are located at either ends of the roller thereof.
  • a rotary reaming stabiliser for use in boreholes including; a body having rollers contained in respective recesses each roller rotating around an axis of rotation about a fixed spindle held at its ends by retaining blocks removably attached to said body; said rollers having an outer surface symmetrical to the axis of rotation, said outer surface having a first surface that is generally parallel to said axis of rotation and a second surface that converges towards said axis of rotation; and said second surface including a plurality of cutters.
  • the rollers are positioned in said reaming stabiliser so that the second surface leads the first in the direction that the roller stabiliser is moving when drilling in a borehole. It has been found that when the rollers are positioned so that the second surface is located at the leading end of the roller, the cutters ensure that any formation that may jam the drill string is cutout. In addition a roller that has both ends thereof converging towards the axis of rotation and which has cutters on those surfaces assists in cutting through any formation wither during insertion or removal of the drill string.
  • the second surface is located at an end of each said roller.
  • the first surface includes a plurality of hard inserts.
  • the stabiliser further includes wear pad assemblies.
  • a rotary reaming stabiliser for use in boreholes including; a body having rollers contained in respective recesses each roller rotating around an axis of rotation about a fixed spindle held at its ends by retaining blocks removably attached to said body; said rollers having a central outer surface symmetrical to the axis of rotation, said outer surface having a first surface that is generally parallel to said axis of rotation; a second surface disposed of at one end of each roller, said second surface converging toward said axis of rotation; and a third surface disposed at the other end of each said roller, said third surface converging towards the axis of rotation; wherein located on said second and third surfaces are cutters adapted to cut into formations.
  • the reaming stabiliser roller may further include wear pad assemblies.
  • FIG. 1 is a fragmentary elevation, which illustrates a reaming stabiliser of a drill string, according to a first embodiment
  • FIG. 2 is a cross-section taken on line 2-2 of FIG. 1 ;
  • FIG. 3 is an elevation view of a roller according to the first embodiment;
  • FIG. 4 is a cross-section taken on line 3 — 3 of FIG. 3;
  • FIG. 5 is an elevation view of a roller according to a second embodiment
  • FIG. 6 is an elevation view of a roller according to a third embodiment.
  • a reaming stabiliser tool having a body 10 including a plurality of rollers 12 that are located in recesses 14. The rollers rotate about a fixed spindle (not shown) held at its ends by retaining blocks 16, the blocks attached to said body by screws (not shown) through openings 18.
  • the rollers have an outer surface including a first surface 20 generally parallel to the axis of rotation and a second surface 22 located at on end thereof that converges with respect to the axis of rotation.
  • a roller may typically be some 15-20 centimetres in length with the length of the second surface being generally about or slightly greater than a quarter of that distance, typically 5-6 centimetres.
  • the converging angle is some 9-10 degrees.
  • the first surface includes a plurality of grooves 24 and a plurality of shoulders 26. The grooves are several millimeters deep. Located on the shoulders 26 are a plurality of hard inserts 28 manufactured form material such as tungsten carbide and which are inserted to be generally flush with the shoulders.
  • the hard inserts provide for a hard wearing surface that is in direct contact with the borehole wall.
  • the grooves 24 that are arranged in a helical arrangement. In this embodiment there are some 10 grooves, each spiraling through a total angle of 36 degrees. There are a total of 8 inserts arranged on each shoulder, the inserts being located in a staggered configuration. There are thus a total of 79 inserts located on the first surface, with one of the positions being used for a ball race button hole 38.
  • buttons or domes 30 that are particularly adept at reaming through hard formations.
  • the buttons project several " millimeters from the second surface, and extend some 4-5 millimeters into the roller.
  • the buttons are spaced circumferentially around the axis of rotation in three rows. In this particular embodiment the most extreme row 32 has some 14 buttons, the middle row 34 some 15 buttons and the inside row 36 some 10 carbide buttons.
  • the roller is placed on the body so that the second surface is closer to the drill string bit, that is, it is the leading end of the roller in the direction of the borehole.
  • the cutters 40 may be of the blade or smooth type configuration, one that is appropriate for soft shale or limestone. Even though the cutter type has changed the basic configuration of the smooth inserts remains the same.
  • the second surface may equally well include a combination of different cutter types.
  • the size of the buttons located in the different rows, as well as their configuration may also be an adjustable feature.
  • Fig. 6 shows a third embodiment of the present invention where the reaming stabiliser is a bi-directional type. That is, the roller includes cutters at both ends to assist in cutting formation not only when the drill string is drilling into the bore hole but also when it is being removed.
  • the reaming roller has a central first surface 20 that is substantially parallel to the axis of rotation, a second surface 22 at one end thereof that converges towards the axis of rotation and a third surface 30 at the other end thereof that also converges towards the axis of rotation. Disposed on the second and third surface are cutters so that the stabiliser tool can cut into formation even when the drill string is being removed from the borehole.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

La présente invention se rapporte à un rouleau conçu pour un stabilisateur à rouleaux utilisé dans les trous de forage. Ce rouleau possède une surface externe symétrique par rapport à son axe de rotation. Une première surface de ladite surface externe est généralement parallèle audit axe de rotation tandis qu'une seconde surface ou partie de cette surface externe converge vers l'axe de rotation. La première surface comporte une pluralité de pièces rapportées dures tandis que la seconde surface comporte une pluralité d'organes de coupe. Généralement, le rouleau est positionné dans le stabilisateur aléseur de sorte que la seconde surface soit disposée à l'avant de la première dans le sens de déplacement du stabilisateur à rouleaux pendant le forage d'un trou. Cependant, lorsque les extrémités des rouleaux sont identiques, c'est à dire qu'elles possèdent toutes deux des surfaces convergentes, alors le rouleau facilite la coupe dans la formation à la fois au moment du forage du trou et lors de son retrait dudit trou.
PCT/AU2000/000232 1999-03-26 2000-03-23 Rouleau de stabilisateur aleseur WO2000058595A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU32638/00A AU3263800A (en) 1999-03-26 2000-03-23 Reaming stabiliser roller

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPP9461A AUPP946199A0 (en) 1999-03-26 1999-03-26 Reaming stabilizer roller
AUPP9461 1999-03-26

Publications (1)

Publication Number Publication Date
WO2000058595A1 true WO2000058595A1 (fr) 2000-10-05

Family

ID=3813657

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2000/000232 WO2000058595A1 (fr) 1999-03-26 2000-03-23 Rouleau de stabilisateur aleseur

Country Status (2)

Country Link
AU (1) AUPP946199A0 (fr)
WO (1) WO2000058595A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102369336A (zh) * 2009-03-20 2012-03-07 哈利伯顿能源服务公司 井下钻井组件
US9284784B2 (en) 2012-05-11 2016-03-15 Tercel Ip Ltd. Downhole assembly, tool and method
US11384601B2 (en) * 2019-03-01 2022-07-12 Precise Drilling Components Ltd Hole opener for horizontal directional drilling
AU2017201328B2 (en) * 2016-02-29 2022-07-21 Sgs Australia Pty Ltd Drill string cartridge back-cut stabiliser tool

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020910A (en) * 1976-05-19 1977-05-03 Rapidex, Inc. Sealing between relatively rotating members in boring apparatus
US4378058A (en) * 1979-04-30 1983-03-29 Smith International, Inc. Reamer-stabilizer
GB2138870A (en) * 1980-08-01 1984-10-31 Oncar Corp A roller-reamer unit for roller-reamer apparatus
US4480704A (en) * 1982-07-19 1984-11-06 Smith International, Inc. Reamer
US4508184A (en) * 1983-05-27 1985-04-02 Hansen Michael S Roller reamer/stabilizer
SU1263801A1 (ru) * 1985-05-23 1986-10-15 Московский Ордена Трудового Красного Знамени Горный Институт Стабилизатор бурильной колонны
EP0274265A2 (fr) * 1987-01-06 1988-07-13 DARRON TOOL & ENGINEERING (SHEFFIELD) LIMITED Dispositif d'alésoir à rouleaux
US4765417A (en) * 1986-08-04 1988-08-23 Oil Patch Group Inc. Reaming apparatus for well drilling
US5381868A (en) * 1993-10-08 1995-01-17 Triumph*Lor Inc Sealed bearing roller reamer

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020910A (en) * 1976-05-19 1977-05-03 Rapidex, Inc. Sealing between relatively rotating members in boring apparatus
US4378058A (en) * 1979-04-30 1983-03-29 Smith International, Inc. Reamer-stabilizer
GB2138870A (en) * 1980-08-01 1984-10-31 Oncar Corp A roller-reamer unit for roller-reamer apparatus
US4480704A (en) * 1982-07-19 1984-11-06 Smith International, Inc. Reamer
US4508184A (en) * 1983-05-27 1985-04-02 Hansen Michael S Roller reamer/stabilizer
SU1263801A1 (ru) * 1985-05-23 1986-10-15 Московский Ордена Трудового Красного Знамени Горный Институт Стабилизатор бурильной колонны
US4765417A (en) * 1986-08-04 1988-08-23 Oil Patch Group Inc. Reaming apparatus for well drilling
EP0274265A2 (fr) * 1987-01-06 1988-07-13 DARRON TOOL & ENGINEERING (SHEFFIELD) LIMITED Dispositif d'alésoir à rouleaux
US5381868A (en) * 1993-10-08 1995-01-17 Triumph*Lor Inc Sealed bearing roller reamer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102369336A (zh) * 2009-03-20 2012-03-07 哈利伯顿能源服务公司 井下钻井组件
CN102369336B (zh) * 2009-03-20 2016-04-20 哈利伯顿能源服务公司 井下钻井组件
US9284784B2 (en) 2012-05-11 2016-03-15 Tercel Ip Ltd. Downhole assembly, tool and method
US9488008B2 (en) 2012-05-11 2016-11-08 Tercel Ip Ltd. Downhole assembly, tool and method
AU2017201328B2 (en) * 2016-02-29 2022-07-21 Sgs Australia Pty Ltd Drill string cartridge back-cut stabiliser tool
US11384601B2 (en) * 2019-03-01 2022-07-12 Precise Drilling Components Ltd Hole opener for horizontal directional drilling

Also Published As

Publication number Publication date
AUPP946199A0 (en) 1999-04-22

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