CA2568909A1 - Reaming and stabilisation tool for use in a borehole - Google Patents

Reaming and stabilisation tool for use in a borehole Download PDF

Info

Publication number
CA2568909A1
CA2568909A1 CA002568909A CA2568909A CA2568909A1 CA 2568909 A1 CA2568909 A1 CA 2568909A1 CA 002568909 A CA002568909 A CA 002568909A CA 2568909 A CA2568909 A CA 2568909A CA 2568909 A1 CA2568909 A1 CA 2568909A1
Authority
CA
Canada
Prior art keywords
tubular body
tool according
cutting arms
hollow piston
cutting
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
CA002568909A
Other languages
French (fr)
Other versions
CA2568909C (en
Inventor
Philippe Fanuel
Jean-Pierre Lassoie
Olivier Mageren
Luis Quintana
Stein Erik Moi
Erik Dithmar
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.)
Halliburton Energy Services Inc
Original Assignee
Halliburton Energy Services N.V.
Philippe Fanuel
Jean-Pierre Lassoie
Olivier Mageren
Luis Quintana
Stein Erik Moi
Erik Dithmar
Security Dbs
Halliburton Energy Services, Inc.
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 Halliburton Energy Services N.V., Philippe Fanuel, Jean-Pierre Lassoie, Olivier Mageren, Luis Quintana, Stein Erik Moi, Erik Dithmar, Security Dbs, Halliburton Energy Services, Inc. filed Critical Halliburton Energy Services N.V.
Publication of CA2568909A1 publication Critical patent/CA2568909A1/en
Application granted granted Critical
Publication of CA2568909C publication Critical patent/CA2568909C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/322—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools cutter shifted by fluid pressure

Abstract

The inventive enlarging and stabilising tool for a borehole comprises a tubular body (1) provided with an axial cavity (2), circumferentially arranged receptacles provided with an outward opening, a knife element (4) disposed in each receptacle and comprising at least two cutting arms (5, 6) which are displaceable between the retracted and extended positions, a drive means (15) mounted inside the tubular body in an axially offset manner with respect to the knife elements and transmission means for transmitting the drive means motion to the pivotable cutting arms, wherein said cutting arms form a space (14) outwardly closed in the extended position thereof therebetween and the tool tubular body.

Claims (24)

1. Reaming and stabilisation tool to be used in a borehole, comprising a tubular body (1) to be mounted between a first section of a drill string and a second section thereof, this tubular body having an axial cavity (2) and, peripherally, housings provided with an opening to the outside, a cutter element (4) housed in each above-mentioned housing, this cutter element comprising at least two cutting arms (5, 6) articulated on each other and on the tubular body (1) and able to be moved between a withdrawn position in which they are situated inside their housing (3) and an extension position in which they are deployed outside, a drive means (15) arranged inside the tubular body (1) so as to be axially offset with respect to the above--mentioned cutter elements (4) and capable of effecting a movement between two extreme positions, and transmission means capable of transmitting the movement of the drive means (15) to the articulated cutting arms (5, 6) of each cutter element (4), in a first of the said extreme positions of the drive means, the cutting arms of each cutter element being in their withdrawn position and, in a second of the said extreme positions, the cutting arms being in their extension position, characterised in that, in the extension position of the cutting arms (5, 6) of each cutter element (4), these cutting arms form between them and the tubular body (1) of the tool a closed space (14) vis-à-vis the outside.
2. Tool according to Claim 1, characterised in that the cutting arms (5, 6) have, between their retracted position and their extension position, an intermediate position beyond which, when a movement towards the extension position is considered, a force exerted on the cutting arms by a formation to be eroded is, by the transmission means, converted into a traction on the drive means (15) in the direction of its above-mentioned second extreme position.
3. Tool according to one of Claims 1 and 2, characterised in that each cutter element (4) comprises a first and second cutting arm (5, 6), the first cutting arm (5) being articulated firstly on the tubular body (1) by means of a first pivot shaft (7) and secondly on the second cutting arm (6) by a second pivot shaft (8), this second cutting arm (6) being in its turn articulated by a third pivot shaft (9) on the above-mentioned transmission means and, in the extension position of the cutting arms (5, 6), only the second pivot shaft (8) is situated outside the tool.
4. Tool according to Claim 3, characterised in that, in the extension position of the cutting arms, the above-mentioned closed space (14) formed between the two cutting arms (5, 6) and the tubular body (1) has a triangular shape having an angle at the vertex (13) which is situated inside the housing (3).
5. Tool according to any one of Claims 1 to 4, characterised in that the drive means is a hollow piston (15) capable of sliding in the axial cavity (2) in the tubular body (1), and in that the transmission means comprise, for each housing (3), a slider (10) connected to each cutter element (4) and capable of sliding in its housing (3), an elongate slot (17) provided in the tubular body (1) between the housing (3) and the said axial cavity (2) and a projection (16) on the slider (10) which passes through the said slot (17) and which bears on the piston (15) so as to follow the latter in its axial movement, the hollow piston (15) closing off any fluid communication between the housings (3) and the axial cavity (2) in the tubular body (1) whilst allowing circulation of drilling mud through the tool.
6. Tool according to Claim 5, characterised in that each housing (3) has a bottom (20), two parallel lateral walls (21, 22) disposed at a distance from each other and two front walls (23, 24), in that each cutting arm (5, 6) and the slider (10) each have a width corresponding to the said distance and slide along the said lateral walls during an extension of the cutting arms, and in that, in the extension position, the cutting arms are laterally in abutment on each of the lateral walls (21, 22), a first cutting arm (5) at a first end and one of the front walls (23) bearing on each other through first mutually cooperating surfaces (25), this first cutting arm (5) at a second end and a second cutting arm (6) at a first end bearing on each other through second cooperating surfaces (26), whilst the second cutting arm (6) at a second end and the slider (10) at a first end bear on each other through third cooperating surfaces (27).
7. Tool according to Claim 6, characterised in that, at their mutual articulation, the cutting arms (5, 6) are provided with fingers (28-30) fitting together, so that the fingers have a total width corresponding to the said distance and in that one of the said cutting arms and the slider articulated on it are also provided with fingers fitting together having a total width corresponding to the said distance.
8. Tool according to any one of Claims 3 to 7, characterised in that, in the retracted position of the cutting arms, the second pivot axis (8) is offset towards the outside with respect to a plane passing through the first and third pivot axes (7, 9).
9. Tool according to any one of Claims 5 to 8, characterised in that, in the retracted position of the cutting arms, the slider (10) articulated on one of the cutting arms (6) has a triggering finger (31) capable of sliding over this cutting arm so as to be in contact with the other one of the cutting arms (5) and in that, in the case of sliding of the slider, the above-mentioned triggering finger (31) raises the said other cutting arm (5) which is articulated on the tubular body (1) of the tool.
10. Tool according to any one of Claims 1 to 9, characterised in that it comprises a strangled passage (32) between the axial cavity (2) in the tubular body (1) where a hydraulic fluid circulates and each housing, substantially at the place where the said space (14) closed vis-à-vis the outside is formed, this passage allowing an injection into this space of jets of hydraulic fluid preventing penetration into this space of a drilling fluid situated outside.
11. Tool according to Claim 10, characterised in that it comprises means (33) of filtering the fluid to be passed through the said strangled passage (32).
12. Tool according to any one of Claims 5 to 11, characterised in that the hollow piston (15) separates the axial cavity (2) of the tubular body (1) in which a hydraulic fluid is at an internal pressure and the housings (3) which are in communication with the outside through their opening.
13. Tool according to Claim 12, characterised in that it comprises an activation device which axially holds the hollow piston (15) inside the tubular body (1) in an initial position in which the cutting arms (5, 6) are in the retracted position in their housing (3) and which is capable of releasing the hollow piston (15) at a suitable moment, thus allowing it to perform its axial movement according to a hydraulic fluid pressure, and at least one return spring (18) which opposes this axial movement and returns the hollow piston (15) towards its initial position, when the hydraulic pressure decreases.
14. Tool according to Claim 13, characterised in that the activation device comprises at least one shear pin (42) which, when the internal pressure of the hydraulic fluid is less than a given threshold, axially holds the hollow piston (15) inside the tubular body (1) in the said initial position and which, when a pressure greater than this threshold is applied to it, is sheared, thus allowing an axial movement of the hollow piston (15) and simultaneously a driving of the slider (10) and passage of the cutting arms (5, 6) to an extension position.
15. Tool according to any one of Claims 12 to 14, characterised in that it comprises a de-activation device which, in the active position, is capable of immobilising the hollow piston in its initial extreme position where the cutting arms of the cutter elements are in the retracted position.
16. Tool according to Claim 15, characterised in that it also comprises, inside the tubular body (1), a capture device which can be activated in a capture position in which the hollow piston (15) is captured by this device when, under the action of the return spring (18), it regains its initial position.
17. Tool according to Claim 16, characterised in that the capture device comprises at least one shear pin (44) which, when the internal pressure of the hydraulic fluid is below a given threshold, holds the capture device in a non-activated position and which, when the hydraulic pressure is greater than this threshold, is sheared, thus allowing activation of the capture device.
18. Tool according to Claims 16 and 17, characterised in that it comprises the activation device and the capture device arranged on one and the same side of the hollow piston (15).
19. Tool according to Claim 18, characterised in that the hollow piston (15) comprises at least one extension tube (34, 35) connected by at least one shear pin (42) to an external tubular slide (41), and in that the tubular body (1) has stop means which prevents sliding of the external tubular slide and piston and in that the activation device comprises a temporary obturation means (48) for the external tubular slide (41) which, in the obturation position, causes a rise in hydraulic pressure, a shearing of the said at least one shear pin (42) and release of the said at least one extension tube (34, 35) and hollow piston (15).
20. Tool according to Claim 19, characterised in that the capture device comprises an internal tubular slide (43) situated inside at least one of the said extension tubes (34, 35) of the hollow piston (15) and connected firstly to one of the latter by at least one shear pin (44) and secondly to a sleeve (45) arranged between one of the said extension tubes of the hollow piston and the tubular body (1) of the tool, by means of a pin (46) passing through slots (47) elongated in the axial direction provided in one of the said extension tubes (34, 35), a first elastic clamping collar (50) arranged inside an internal housing of one of the said extension tubes (34, 35) of the hollow piston (15) and surrounding the said internal tubular slide (43), a second elastic clamping collar (51) arranged inside an internal housing fixed with respect to the tubular body (1) and surrounding the said sleeve (45), a temporary obturation means (52) for the internal tubular slide (43) which, in the obturation position, causes a rise in hydraulic pressure, a shearing of the said at least one shear pin (44) and release of this slide and of the above-mentioned sleeve (45) as well as a sliding of these, one inside one of the said extension tubes (34, 35) and the other between one of these and the tubular body (1) of the tool, the first clamping collar (50) coming to be housed inside an external housing of the internal tubular slide (43), thus connecting this to the piston (15) and the second clamping collar (51) coming to be housed inside an external housing provided on the above--mentioned sleeve (45), thus fixing this sleeve, and therefore the piston (15), to the tubular body (1) of the tool.
21. Tool according to Claim 13, characterised in that the activation device comprises a bolt which, in a closed position, axially holds the hollow piston inside the tubular body in the said initial position, and an electric control member, connected to the bolt and capable of controlling a movement of the bolt into an open position in which it releases the hollow piston.
22. Tool according to Claim 16, characterised in that it comprises a bolt which, in a closed position, holds the capture device in a non-activated position and an electric control member, connected to the bolt and capable of controlling a movement of the bolt into an open position in which it releases the capture device so that it makes a movement into the said capture position.
23. Tool according to Claim 15, characterised in that it comprises a tubular slide (102) which, in the initial position of the piston and during its axial movement, is fixed to the piston and which, in the active position, is released from the piston and puts in communication a chamber (60), situated on a driving side of the piston, and outside, the piston being returned into its initial position under the action of spring forces.
24. Tool according to any one of Claims 1 to 23, characterised in that it has a ratio between a diameter of the borehole enlarged by the said cutting arms in the extension position and an outside diameter of the tool in a position of retraction of the cutting arms which is greater than or equal to 1.3.
CA2568909A 2004-06-09 2005-06-07 Reaming and stabilisation tool for use in a borehole Expired - Fee Related CA2568909C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
BEPCT/BE2004/000083 2004-06-09
BEPCT/BE2004/000083 2004-06-09
PCT/EP2005/052613 WO2005124094A1 (en) 2004-06-09 2005-06-07 Enlarging and stabilising tool for a borehole

Publications (2)

Publication Number Publication Date
CA2568909A1 true CA2568909A1 (en) 2005-12-29
CA2568909C CA2568909C (en) 2011-11-15

Family

ID=34957690

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2568909A Expired - Fee Related CA2568909C (en) 2004-06-09 2005-06-07 Reaming and stabilisation tool for use in a borehole

Country Status (8)

Country Link
US (3) US7401666B2 (en)
EP (1) EP1766179B1 (en)
CN (1) CN1965145B (en)
AT (1) ATE377130T1 (en)
CA (1) CA2568909C (en)
DE (1) DE602005003135T8 (en)
NO (1) NO334140B1 (en)
WO (1) WO2005124094A1 (en)

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US7584811B2 (en) 2009-09-08
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US20050274546A1 (en) 2005-12-15
US7401666B2 (en) 2008-07-22
US7975783B2 (en) 2011-07-12
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CA2568909C (en) 2011-11-15
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EP1766179A1 (en) 2007-03-28
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US20080257608A1 (en) 2008-10-23
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US20090314548A1 (en) 2009-12-24
CN1965145B (en) 2010-05-05

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