EP1259698A1 - Procede de forage auto-penetrant et outil generateur de poussee permettant de mettre en oeuvre le procede - Google Patents
Procede de forage auto-penetrant et outil generateur de poussee permettant de mettre en oeuvre le procedeInfo
- Publication number
- EP1259698A1 EP1259698A1 EP01907766A EP01907766A EP1259698A1 EP 1259698 A1 EP1259698 A1 EP 1259698A1 EP 01907766 A EP01907766 A EP 01907766A EP 01907766 A EP01907766 A EP 01907766A EP 1259698 A1 EP1259698 A1 EP 1259698A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- blade
- axis
- rotation
- 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
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000011435 rock Substances 0.000 claims abstract description 40
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 13
- 238000005520 cutting process Methods 0.000 claims description 100
- 230000003993 interaction Effects 0.000 description 4
- 230000000284 resting effect Effects 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 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
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
- E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
Definitions
- the present invention relates to a self-penetrating drilling method and a thrust generating tool for implementing the method.
- a monobloc drilling tool has two main parts: an internal part called “tool nose” whose cutters dig on the bottom of the borehole and an external part called “tool side” whose cutters dig mainly on the wall drilling.
- the invention relates more particularly to the method of cutting the cutting substructure constituting the side of the tool.
- the invention also relates to the cutting substructure making it possible to implement the method.
- Method The method according to the invention comprises the step of generating, by means of a drilling tool actuated in rotation around of an axis, a thrust parallel to the direction of said axis and directed in the direction of advance of said tool in the rock.
- the method is such that said thrust on said drilling tool is the result of the reaction of the rock on the drilling tool during the mechanical action of cutting the rock by the drilling tool.
- the tool comprises N numbered blades of
- Each blade is wound in a spiral around the axis of the tool and is inclined relative to the latter.
- the part of the blade closest to the tool nose is also the closest to the axis of the tool.
- Each blade has K cutting edges.
- the first cutter is the cutter closest to the axis and nose of the tool.
- Each cutter is designated by two indices:
- the first index n varying from 1 to N
- the second index k varying from 1 to K
- the kth cutting edge of the nth blade will be called the cutting edge T (n,).
- Each cutter has a face, hereinafter called the attack face, resting on the rock.
- the geometries, the positions and the orientations of all or part of said cutters are calculated by respecting the following rules:
- the normal to the cutting edge of the cutting edge has a component along the axis of rotation oriented upstream.
- the invention also relates to a self-penetrating drilling tool intended for drilling a well in a rock.
- the drilling tool actuated in rotation about an axis, comprises a substructure constituting the side of the tool, generating a thrust parallel to the direction of said axis and directed in the direction of advancement of said tool in the rock.
- the drilling tool is such that said thrust on said drilling tool is the result of the reaction of the rock on the drilling tool during the mechanical action of cutting the rock with 1 ' drilling tool.
- the tool comprises N numbered blades of
- Each blade is wound in a spiral around the axis of the tool and is inclined relative to it. The part of the blade closest to the tool nose is also the closest to the axis of the tool.
- Each blade has K cutting edges. The first cutter is the cutter closest to the axis and head of the tool. Each cutter is designated by two indices:
- each cutter has a face, hereinafter called the attack face, resting on the rock.
- the geometries, positions and orientations of all or part of said cutting edges are such that: - the kth cutting edge of the last blade, T (N, k), digs in (ql) th round R (ql) of rotation of the tool a groove in the rock downstream from that made by the (k + l) th cutting edge of the first blade, T (l, k + 1), on the qth turn Rq of rotation of the tool, - the kth cutting edge of the nth blade, T (n, k), digs in the qth turn Rq of rotation of the tool a groove in the rock downstream from that made by the kth cutting of the (n + l) th blade, T (n + l, k), on the qth turn Rq of rotation of the tool, - the normal to the leading face of the cutter has a component along the axis of rotation oriented towards the upstream.
- FIG. 1 which represents a perspective view of a drilling tool according to the invention comprising four blades and four cutting edges per blade
- the local reference marks (Xi, Yi, Zi) and the global reference point (Xo, Yo, Zo) have also been represented with respect to which the position of the cutters is defined
- FIG. 2 which represents a bottom view of a drilling tool
- FIG. 3 which represents the geometry of a cutter
- FIG. 4 which represents the position and the orientation of a cutter in a local coordinate system (Xi, Yi, Zi)
- FIG. 5 which represents a perspective view of the interactions between the cutters and the rock
- FIG. 1 which represents a perspective view of a drilling tool according to the invention comprising four blades and four cutting edges per blade
- the local reference marks (Xi, Yi, Zi) and the global reference point (Xo, Yo, Zo) have also been represented with respect to which the position of the cutters is defined
- FIG. 2 which represents a bottom view of a drilling tool
- FIG. 3 which represents the geometry of a
- FIG. 6 which represents, in the case of a tool comprising four blades and two cutters, position and or- dre of passage of the cutting edges in a fixed plane of the space passing through the axis of rotation of the tool
- FIG. 7 which graphically represents, in the case of a tool comprising four blades and two cutting edges, the developed of the cutting structure along one axis of penetration and the order of passage of the cutting edges
- FIG. 8 which represents a schematic perspective view of the elementary interaction between a cutting edge and the rock.
- FIG. 1 represents a perspective view of a drilling tool 1 according to the invention comprising four blades 2a, 2b, 2c, 2d and four cutters 3a, 3b, 3c, 3d per blade.
- a local coordinate system (Xi, Yi, Zi) and the global coordinate system (Xo, Yo, Zo) have also been shown with respect to which the position (ri, zi, ⁇ i) of the cutters is defined.
- the tool is actuated in rotation about an axis 4 (Zo axis).
- the four blades 2a, 2b, 2c, 2d are numbered from 1 to 4 in the opposite direction 5 of rotation.
- the first blade is that which carries the cutting edge closest to the axis of the tool; it is numbered 1 and corresponds to the blade 2a in FIG. 1.
- the blades 2b, 2c, 2d are numbered 2, 3, 4.
- Each blade 2a, 2b, 2c, 2d is wound in an ascending spiral around 1 ' axis 4 of the tool 1 and is inclined relative thereto.
- the part 2al of the blade 2a closest to the nose 1a of the tool 1 is also the closest to the axis 4 of the latter.
- Each blade has four cutting edges.
- the blade 2a carries the cutting edges 3a, 3b, 3c, 3d.
- the first cutter of each blade is the cutter closest to the axis 4 and the nose of the tool 1.
- the first cutter of the blade 2a is the cutter 3a.
- the cutting edges 3b, 3c, 3d are the second, third and fourth cutting edges of the blade 2a.
- Each cutter is designated by two indices: the first index n, varying from 1 to 4, corresponds to the number of the blade which carries the said cutting edge considered,
- the second index k corresponds to the position of the cutting edge considered on the blade starting from the first cutting edge
- the kth cutting edge of the nth blade will be called the cutting edge T (n, k).
- the second cutting edge 3b of the first blade 2a is called the cutting edge T (l, 2).
- Each cutter has: - a face, hereinafter called the attack face, resting on the rock,
- the axis Zi is inclined at an angle ⁇ i relative to the axis 4.
- the axis Xi is carried by the perpendicular to the axis Zi, located in the meridian plane, passing through the point of contact 3b3.
- the axis Yi, perpendicular to the axis Zi and to the axis Xi at the point of contact 3b3, completes the orthonormal reference frame Xi, Yi, Zi originating from the point of contact 3b3.
- the coordinates of the origin of the orthonormal coordinate system Xi, Yi, Zi in the coordinate system Xo, Yo, Zo are Zi, ri, ⁇ i.
- the cut diamond 30 is in the form of a plate substantially in a quarter circle.
- FIG. 4 shows the leading face ⁇ l, referenced 3bl, the cutting edge, referenced 3b2, the point of contact with the rock, referenced 3b3.
- the relative position of the draft plane ⁇ 2, referenced 32, and of the lateral draft plane ⁇ 3, referenced 33, is also shown relative to the leading face 3bl.
- the draft plane ⁇ 2, 32, is substantially perpendicular to the leading face 3bl and substantially parallel to the plane (Xi, Yi).
- the lateral draft plane ⁇ 3, 33 is substantially perpendicular to the leading face 3bl as well as to the plane (Xi, Yi).
- the notations ⁇ l3, ⁇ l2, ⁇ 23 respectively denote the angles of the dihedrons ( ⁇ l, ⁇ 3),
- angles preferably have particular values between 80 ° and 120 °.
- FIG. 4 represents the position and the orientation of a cutting edge in a local coordinate system (Xi, Yi, Zi).
- the cutting angle ⁇ c is between 0 ° and 40 °
- the lateral angle ⁇ s is between 30 ° and 80 °
- the clearance angle ⁇ d is between 0 ° and 10 °.
- the geometries, positions and orientations of all or part of said cutting edges are calculated by respecting the following rules: - the kth cutting edge of the last blade, T (N, k), digs in (ql) th round R (ql) of rotation of the tool a groove in the rock downstream from that made by the (k + l) th cutting of the first blade, T (l, k + 1), on the qth round Rq of rotation of the tool, - the kth cutting of the nth blade, T (n, k), digs in the qth round Rq of rotation of the tool a groove in the rock downstream from that performed by the kth cutter of the (n + l) th blade, T (n + l, k), at the qth turn Rq of rotation of the tool, - the normal to the leading face of the cutter has a component according to the axis of rotation oriented upstream.
- FIG. 5 represents a perspective view of the interactions between the cutters and the rock 51, the elements described with reference to the figure 1. They have the same reference numbers.
- PC (n, k) will designate the contact point of the cutting edge T (n, k).
- FIG. 6 there is shown, in the case of a tool comprising four blades with two cutting edges, the position and the order of passage 61 of the cutting edges in a fixed plane passing through the axis of the tool . It can be seen that, as the tool rotates, the grooves ⁇ Oi are made in the rock 60 by the cutters, upstream of a groove 60j previously made by another cutter.
- Figure 7 there is shown graphically, in the case of a tool comprising four blades with two cutting edges, the development of the cutting structure along the axis of penetration (z axis) and the order of passage 61 of the cutting edges .
- FIG 8 there is shown a schematic perspective view of one elementary interaction between a cutter T (n, k) and the rock 70.
- the leading face 71 is supported on the rock in the direction of movement 72 of the cutting and digging a groove 73.
- the drilling tool moves from upstream to downstream in the direction indicated by the arrow 74.
- the reaction forces of the rock on the cutter exert a directed thrust in the direction of the arrow 74.
- the lateral inclination ⁇ cin of the cutting front is chosen at the advancing step ⁇ cin. It is specified that when the tool drills along its axis at the advancement step per revolution ⁇ cin, the grooves dug by the cutting edges of each blade during the same revolution are aligned along a line inclined to ⁇ cin relative to the horizontal plane as shown in figure 6.
- the lateral inclination ⁇ i of the cutting edges is chosen so as to ensure the non-hooking of the draft plane ⁇ 2.
- the lateral inclination ⁇ i is the inclination of the axis Zi of the frame of the ith cutting edge relative to the axis Zo as indicated in FIG. 1.
- the cutting angle ⁇ c is less than or equal to 30 °.
- the lateral angle ⁇ s is greater than or equal to 60 °.
- the lateral inclination ⁇ cin of the cutting front is greater than or equal to 50 °.
- the lateral inclination of the cutting edges ⁇ i is greater than or equal to the lateral inclination ⁇ cin of the cutting edge.
- the height h of the rectangular section of the groove is greater than or equal to 1 mm.
- the width d of the rectangular section of the groove is less than or equal to twice the height h of the rectangular section of the groove.
- a person skilled in the art having these explanations is able to determine by successive iterations the geometries, the positions and the orientations of said cutters so as to generate a thrust directed in the direction of advance of the drilling tool in the rock.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0002620A FR2805845B1 (fr) | 2000-03-01 | 2000-03-01 | Procede de forage auto-penetrant et outil generateur de poussee permettant de mettre en oeuvre le procede |
FR0002620 | 2000-03-01 | ||
PCT/FR2001/000401 WO2001065052A1 (fr) | 2000-03-01 | 2001-02-12 | Procede de forage auto-penetrant et outil generateur de poussee permettant de mettre en oeuvre le procede |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1259698A1 true EP1259698A1 (fr) | 2002-11-27 |
EP1259698B1 EP1259698B1 (fr) | 2018-09-05 |
Family
ID=8847588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01907766.8A Expired - Lifetime EP1259698B1 (fr) | 2000-03-01 | 2001-02-12 | Procede de forage auto-penetrant et outil generateur de poussee permettant de mettre en oeuvre le procede |
Country Status (6)
Country | Link |
---|---|
US (1) | US7059431B2 (fr) |
EP (1) | EP1259698B1 (fr) |
CA (1) | CA2400449C (fr) |
FR (1) | FR2805845B1 (fr) |
NO (1) | NO328204B1 (fr) |
WO (1) | WO2001065052A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7686104B2 (en) * | 2005-08-15 | 2010-03-30 | Smith International, Inc. | Rolling cone drill bit having cutter elements positioned in a plurality of differing radial positions |
US7370711B2 (en) * | 2005-08-15 | 2008-05-13 | Smith International, Inc. | Rolling cone drill bit having non-circumferentially arranged cutter elements |
US20090271161A1 (en) * | 2008-04-25 | 2009-10-29 | Baker Hughes Incorporated | Arrangement of cutting elements on roller cones for earth boring bits |
US8353369B2 (en) | 2008-08-06 | 2013-01-15 | Atlas Copco Secoroc, LLC | Percussion assisted rotary earth bit and method of operating the same |
US20100032216A1 (en) * | 2008-08-08 | 2010-02-11 | Osborne Jr Andrew J | Earth boring cutter employing helical teeth |
DE102009003288A1 (de) * | 2009-05-20 | 2010-11-25 | Hilti Aktiengesellschaft | Bohrer |
CN107288550B (zh) * | 2017-08-18 | 2023-07-04 | 陕西圆极岩土科技发展有限公司 | 适用于硬质岩土层的打桩成孔钻头 |
EP3757344A1 (fr) | 2019-06-25 | 2020-12-30 | VAREL EUROPE (Société par Actions Simplifiée) | Foret doté d'un effet de réduction de poids sur bit |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2365941A (en) * | 1942-08-31 | 1944-12-26 | Shell Dev | Oil well drill bit |
US3181629A (en) * | 1962-07-23 | 1965-05-04 | Joseph H Birman | Apparatus for geothermal prospecting |
US4848489A (en) * | 1987-03-26 | 1989-07-18 | Reed Tool Company | Drag drill bit having improved arrangement of cutting elements |
US5641027A (en) * | 1995-01-09 | 1997-06-24 | Utd Incorporated | Drilling system |
US5937958A (en) * | 1997-02-19 | 1999-08-17 | Smith International, Inc. | Drill bits with predictable walk tendencies |
US6142245A (en) * | 1997-08-19 | 2000-11-07 | Shell Oil Company | Extended reach drilling system |
US6167975B1 (en) * | 1999-04-01 | 2001-01-02 | Rock Bit International, Inc. | One cone rotary drill bit featuring enhanced grooves |
-
2000
- 2000-03-01 FR FR0002620A patent/FR2805845B1/fr not_active Expired - Lifetime
-
2001
- 2001-02-12 US US10/220,385 patent/US7059431B2/en not_active Expired - Fee Related
- 2001-02-12 CA CA2400449A patent/CA2400449C/fr not_active Expired - Lifetime
- 2001-02-12 EP EP01907766.8A patent/EP1259698B1/fr not_active Expired - Lifetime
- 2001-02-12 WO PCT/FR2001/000401 patent/WO2001065052A1/fr active Application Filing
-
2002
- 2002-08-26 NO NO20024050A patent/NO328204B1/no not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO0165052A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2400449C (fr) | 2010-07-06 |
WO2001065052A1 (fr) | 2001-09-07 |
NO328204B1 (no) | 2010-01-11 |
NO20024050L (no) | 2002-09-02 |
US20030141109A1 (en) | 2003-07-31 |
FR2805845A1 (fr) | 2001-09-07 |
FR2805845B1 (fr) | 2002-06-07 |
CA2400449A1 (fr) | 2001-09-07 |
EP1259698B1 (fr) | 2018-09-05 |
US7059431B2 (en) | 2006-06-13 |
NO20024050D0 (no) | 2002-08-26 |
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