EP0944765B1 - Outil de forage et/ou de carottage - Google Patents
Outil de forage et/ou de carottage Download PDFInfo
- Publication number
- EP0944765B1 EP0944765B1 EP97949846A EP97949846A EP0944765B1 EP 0944765 B1 EP0944765 B1 EP 0944765B1 EP 97949846 A EP97949846 A EP 97949846A EP 97949846 A EP97949846 A EP 97949846A EP 0944765 B1 EP0944765 B1 EP 0944765B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- elements
- drill
- blade
- tool according
- 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.)
- Revoked
Links
- 238000005553 drilling Methods 0.000 title claims description 25
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 239000010432 diamond Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 claims description 3
- 238000001764 infiltration Methods 0.000 claims description 3
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 229910003460 diamond Inorganic materials 0.000 description 5
- 238000005755 formation reaction Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000035515 penetration Effects 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000004459 forage Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 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
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
-
- 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
- E21B10/006—Drill bits providing a cutting edge which is self-renewable during drilling
-
- 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
-
- 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
- E21B10/46—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 tool for drilling and / or coring, in particular for drilling and / or oil coring, such as the preamble to the claim 1, as also disclosed in GB-A-2 204 625 or FR-A-2 620 487.
- the object of the present invention is to improve the drilling and / or coring conditions known to this update and offers a tool which, on the one hand, provides a particularly advantageous arrangement and economical blades and cutting elements for avoid unnecessary regrinding of debris detached from the training and which, on the other hand, provides for a reserve cutting elements which will only be practically service and solicited only when needed, for example following the removal of a cutting element, possibly in PDC, located on a leading edge.
- the leading edge of the blades has the shape of a propeller with possibly variable radius and which, at least along said peripheral surface, turns either in opposite direction of the direction of drilling rotation either in the same direction as it moves away from the anterior face.
- the width of a blade taken in a projection plane perpendicular to the axis of rotation, increases as we move away from it, on the anterior face, and / or thereof in direction of a rear face of the tool. he can be advantageous while the number of cutting elements arranged one behind the other on the same blade and on of the same aforementioned distances, radial and parallel to the axis of rotation, increases progressively, in particular an element preferably of a length equal to that of the aforementioned cutting elements, as the width of the blade increases.
- Figure 1 shows schematically in a half plan view, as a tool, a head drilling of the invention.
- Figure 2 shows schematically, in axial section, a superposition in the half-plane of section, after adequate rotation around the axis of rotation, projections of all cutting elements in PDC and secondary of the different blades of a tool drilling.
- Figure 3 shows schematically in a half plan view, as a tool, a crown of coring of the invention.
- FIG. 4 schematically represents, from the same way as that of FIG. 2 but simplified, projections of cutting elements in PDC circular and oblong secondary cutting elements of different blades.
- Figure 5 shows schematically, in a partial plan view, another embodiment of a drill head as a tool of the invention.
- Figure 6 shows schematically, at the as shown in Figure 4 but on another scale, a projection of the cutting elements in an axial half-plane various blades of a drilling head of the invention.
- Tool 1 of the invention comprises so known, as shown in Figures 1, 2 and 3, a body 2 having a peripheral surface 3 substantially cylindrical and an anterior face 4 considering a direction of advance of drilling and / or coring. 5 extend from the anterior face 4 to the peripheral surface 3 and they each have a leading edge 6 for drilling or coring.
- Sharp elements in PDC 7 are located at least in the area central 15A and are arranged so that their longitudinal axes are transverse to the axis of tool rotation 1.
- Elements in PDC 7C can be distributed along the leading edge 6 of each blade 5; they each have a cutting edge 8 constituting together the leading edge 6.
- secondary cutting element 10 By secondary cutting element 10, one can hear here a cutting element arranged outside the central zone 15A, of which the cutting edge 8 is part from the leading edge 6.
- a secondary element 10 can be made by sintering and contain grains abrasives and a metallic binder.
- Nozzles 9 ( Figures 1 and 2, not shown in Figure 3) are usually provided on the front side 4 in order to provide through them a adequate liquid at the bottom of the well during operation.
- the tool 1 includes plus, behind at least one cutting element in PDC 7C ( Figure 5) or a secondary element 10 ( Figure 1) in considering a direction of rotation of drilling S of the tool 1, at least one cutting element 10A associated with the element 7C or 10, which has a cross section of the same shape, at least for its projecting part of the blade 5, that that of the latter and which is arranged on the same blade 5 as the element 7C or 10 with which it is associated.
- a cutting edge 11 of the associated element 10A is at plus the same radial distance R ( Figure 2) from the axis of rotation and at least the same distance D, measured parallel to this axis of rotation from a plane P perpendicular to this axis and located in front of the tool 1, that the cutting edge 8 of the element in PDC 7C or secondary 10 associated.
- the associated item (s) 10A can therefore be set back from the elements 7C or 10 ( Figure 6) regarding the training to drill or core.
- Figures 1 and 5 show for example that beyond a determined diameter around the axis of rotation, one or more associated elements 10A are thus behind each element in PDC 7C or secondary 10 arranged on the leading edge 6 of the same blade 5.
- the elements in PDC 7 and secondary 10 partners each time form a portion of ring centered on the axis of rotation.
- the cutting elements in PDC 7 or 7C being usually mostly cylindrical, it can be preferred that secondary elements 10 and / or associated 10A are also and then advantageously present a diameter equal to that of the PDC 7C element corresponding.
- the diameters of the elements in PDC 7, 7C, secondary 10 and / or associated 10A can be either all equal be different from each other, by example depending on their distance from the axis of rotation.
- the closest cutting elements 10 of the axis of rotation are shown as having a same diameter and same orientation around this axis than the other cutting elements 10 located further from the axis of rotation.
- these 10 most relatives are represented as having a greater length to that of the other elements 10 located further of the axis of rotation. They could however have the same length as these.
- the crown 1 does not include cutting elements made of PDC 7.
- PDC 7C, secondary 10, and associates 10A have been shown above as possibly be cylindrical ( Figures 2 and 6). At least some associated elements 10A could however present other cross sections, for example oblong, elliptical or oval ( Figure 4), the major axis of the oval or ellipse can then advantageously be substantially perpendicular to a plane tangent to an envelope 15B of the cutting elements 7, 10, 10A to the point of contact between the cutting edge 11 of the associated element 10A in question and this envelope 15B.
- Associated oblong 10A elements of this kind increase what can be called the volume of matter abrasive per unit of active surface of tool 1, being given the reservation that this accumulates deep into tool 1 and which can be used. It appears however that circular 10A associated elements increase already considerably this volume compared to the case so-called impregnated tools.
- tool 1 of the invention it is preferred as cutting elements in PDC 7C ( Figure 5) or secondary 10 ( Figures 1 and 3) and the elements associated 10A neighbors are practically attached one to the other by their end faces facing one the other.
- Possible gaps between two elements 7C, 10, 10A neighbors and associates, resulting in example of the curvature of tool 1 seen in a plane intersecting perpendicular to the axis of rotation can be filled in the usual way in the trade (material infiltration, adequate sealant, etc.).
- the leading edge 6 of each blade 5 of the tool 1 of the invention present in the whole a form of propeller, with variable diameter from the axis of rotation or from its most extreme close to it, on the anterior side 4, up to its opposite end located on the peripheral surface cylindrical 3 of body 2.
- This propeller can rotate either in the same direction either in the opposite direction to the direction of rotation S during drilling as it deviates of the axis of rotation and / or of the anterior face 4.
- the leading edge 6, seen in plan can start radially, or even in the direction of the tool rotation S near the axis of rotation and can then bend to go in the opposite direction of said direction of rotation S.
- each blade 5 can project from the body 2 and present, as an external surface, a portion of the surface of revolution 12 in which elements are implanted cutting in PDC 7C or secondary 10 and associated 10A and which is delimited by anterior lateral faces 13 and posterior 14 (depending on the direction of rotation S in progress drilling or coring) which, in projection ( Figures 1, 3 and 5), follow the shape of the propeller of a leading edge 6 correspondent.
- anterior lateral face 13A of a blade 5A follows the shape of the leading edge 6A of this same blade 5A while the posterior lateral face 14A of this blade 5A rather follows the shape of the edge 6B of the next 5B blade or a plot intermediate between those of the leading edges 6A and 6B.
- the width of the portion of surface 12 and therefore the width of the blade 5, measured in a projection plane perpendicular to the axis of rotation, increases as one moves away from it on the anterior face 4 and / or that one deviates from this, on the peripheral surface 2, towards of a rear face 15 (FIG. 2) of the tool 1.
- the number of cutting elements associates 10A arranged one behind the other and behind a cutting element 7C, 10 on the blade 5, to the same level D taken parallel to the axis of rotation and by with respect to a plane P which is perpendicular thereto, can gradually increase by an associated element 10A.
- all elements in PDC 7C and / or secondary 10 and / or associated 10A have the same length.
- Secondary cutting elements 10 and / or associates 10A are advantageously made in one cheaper material than that of PDC 7 elements.
- secondary elements 10 and / or associated 10A are by example made of a composite material containing abrasive particles. It can be carbide sintered or infiltrated tungsten known to man of the loom, and possibly including particles of diamond.
- associated elements 10A can however also be made in PDC and arranged by example between two other associated elements 10A in composite material cheaper than PDC, in the same line at the same level on a blade 5.
- Elements secondary 10 and / or associated 10A can also be made in what is called in the profession of thermostable synthetic diamond.
- Secondary elements 10 and / or associated 10A can have a different hardness between them, for example according to their position on tool 1, and may also contain percentages (by volume) variable in abrasive and / or diamond particles.
- At least one blade 5 can extend into an area central 15A of the front face 4 and one of the blades 5 may present a cutting element in PDC 7B which acts practically in the center of this face 4.
- the blade (s) 5 may preferably not have only PDC 7B cutting elements without associated cutting element 10A.
- blade 5A can be closer to the axis of rotation than the others blades 5 and have a reduced width in this area central 15A.
- blades like the 5B can start outside the central zone 15A and have as soon as they start a width such as several cutting elements 7C or 10 and 10A can be arranged online at a first level D most anterior on this blade 5B.
- Drilling fluid conduits ( Figure 1) and / or coring can be provided so usual in tool 1.
- the outlet nozzles 9 of this liquid can be of a type to be screwed into tool 1 so as to be exchangeable according to their dimensions flow and therefore the flow of liquid to the bottom of a well being drilled.
- Nozzles 9 can however be made up of prefabricated elements. So when the manufacture of a tool 1 by molding, these elements prefabricated can be installed in locations provided in the mold at the same time as they are placed, in adequate locations, cutting elements in PDC 7, secondary la and associated 10A. The mold is then filled in the usual way with solid elements and powdered materials which constitute in a known manner itself, after infiltration of a liquid metal in this mass, the body 2 and the blades 5 proper, the liquid metal then fixing the elements at the same time prefabricated and cutting elements 7, 10, 10A aux blades 5 thus produced.
- the cutting elements 7, 10, 10A are arranged at levels D and distances R from the axis of rotation chosen so that projection in a plane passing through the axis of rotation ( Figures 2, 4 and 6), the cutting elements 7, 10, 10A are complement each other to form at the bottom of a well drilled or cored a 15B envelope with leading edges 6 as regular as possible, without leaving high circular projections 16 between two circular grooves 17 cut by the cutting edges 8, 11 of the assembly leading edges 6 in formation 17A to be drilled or carotter.
- the front face 4 of the tool drilling 1 (figure 2) is preferably concave in the central zone 15A and the cutting elements 7, 10, 10A are arranged so as to cut a bottom of the hole substantially conical drilling with a slight slope, for example between 10 ° and 30 °, relative to a perpendicular plane at the axis of rotation, the cone pointing towards the end back 15 of tool 1 in working position.
- a 20 ° slope may be preferred.
- the blades 5 in a helix are advantageously arranged on the peripheral surface 3 of so that, seen according to the projection of FIG. 1, a blade 5A covers the rear end 18F of a 5F blade which extends (in the case of this figure) along arrow 19A to below the part visible from slide 5A in this view, and the same for others. So continuity is assured, without shock, a bearing (thus improved) of tool 1 against a wall for example of the well being drilled.
- the propeller described in the case of the drilling tool 1 can be considered to be a portion of a spiral, on the front side 4, followed by a properly propeller said on the peripheral surface 3.
- a channel 19 ( Figures 1 and 2) is provided each time between two blades 5 and, advantageously, it widens at least from its furthest end close to the axis of rotation and possibly up to reach a specific width, for example as that the blades 5 which surround it widen.
- Secondary cutting elements 10 and / or associates 10A preferably have their end faces 20 (anterior and / or posterior) parallel to the axis of rotation of the tool 1. These end faces 20 can form an angle with a radius starting from this axis rotating and going through any of their points.
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- 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)
- Drilling Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Description
- des éléments coupants en PDC et/ou des éléments coupants secondaires qui présentent chacun une arête de coupe, formant ensemble le bord d'attaque de la lame, et dont l'axe longitudinal est transversal à l'axe de rotation, et
- au moins un élément coupant associé
- qui est situé derrière, en considérant un sens de rotation de forage de l'outil, au moins un des éléments coupants en PDC ou secondaires,
- qui présente une section transversale de même forme, du moins pour sa partie en saillie de la lame, que celle de l'élément coupant en PDC ou secondaire,
- qui est disposé sur la même lame et
- dont une arête destinée à la coupe est à au plus une même distance radiale de l'axe de rotation et à au moins une même distance, mesurée parallèlement à cet axe de rotation à partir d'un plan perpendiculaire à cet axe et situé en avant de l'outil 1, que l'arête de coupe de l'élément en PDC ou secondaire précité.
- 1
- Outil
- 2
- Corps
- 3
- Surface périphérique de 2
- 4
- Face antérieure de 2
- 5
- Lame (dont on indique en particulier les lames 5A, 5B, 5F)
- 6
- Bord d'attaque de 5 (et dont on indique en particulier les bords 6A, 6B des lames correspondantes)
- 7
- Elément coupant en PDC (dont on indique également des variantes 7B et 7C en fonction de leurs positions relatives)
- 8
- Arête de coupe de 7, 10
- 9
- Ajutage
- 10
- Elément coupant secondaire
- 10A
- Elément coupant associé
- 11
- Arête de coupe de 10A
- 12
- Portion de surface de révolution de 5
- 13
- Face latérale antérieure de 5 (dont on indique en particulier la 13A de la lame 5A correspondante)
- 14
- Face latérale postérieure de 5 (dont on indique en particulier la 14A de la lame 5A correspondante)
- 15
- Face postérieure de 1
- 15A
- Zone centrale de 4
- 15B
- Enveloppe
- 16
- Saillies
- 17
- Sillons
- 17A
- Formation
- 18
- Extrémité postérieure de 5 (dont on indique en particulier 18F de la lame 5F correspondante)
- 19
- Canal
- 19A
- Flèche
- 20
- Faces d'extrémité de 10, 10A
- P
- Plan perpendiculaire, devant l'outil 1
- D
- Distance à partir de P
- R
- Distance radiale
- S
- Sens de rotation de l'outil 1.
Claims (15)
- Outil de forage ou de carottage, en particulier pour du forage ou du carottage pétrolier, comprenant :caractérisé en ce que l'élément coupant associé (10A)un corps (2) présentant une surface périphérique (3) sensiblement cylindrique et une face antérieure (4), en considérant un sens d'avance en cours de forage ou de carottage,des lames (5) qui s'étendent depuis la face antérieure (4) jusque sur la surface périphérique (3) et qui présentent chacune un bord d'attaque (6) pour le forage ou le carottage,le cas échéant, des éléments coupants en PDC (7) qui sont situés au moins dans une zone centrale (15A) de la face antérieure (4) et dont les axes longitudinaux sont transversaux à l'axe de rotation de l'outil (1),des ajutages (9) pour fournir un liquide de forage, et,en dehors de ladite zone centrale (15A) et sur au moins une lame (5),des éléments coupants d'attaque (7C, 10), choisis parmi des éléments coupants en PDC (7C) et des éléments coupants secondaires (10), chaque fois en forme de plaquette, qui présentent chacun une arête de coupe (8), formant ensemble le bord d'attaque (6) de la lame (5), et dont l'axe longitudinal est transversal à l'axe de rotation, etau moins un élément coupant associé (10A) qui est situé derrière au moins un des éléments coupants d'attaque (7C, 10) en considérant un sens de rotation (S) de forage de l'outil (1), et qui est disposé sur la même lame (5),présente une forme de plaquette de section transversale de même allure, du moins pour sa partie en saillie de la lame (5), que celle de l'élément coupant d'attaque (7C, 10).comporte pour la coupe une arête (11) disposée à au plus une même distance radiale (R) de l'axe de rotation et à au moins une même distance (D), mesurée parallèlement à cet axe de rotation à partir d'un plan (P) perpendiculaire à cet axe et situé en avant de l'outil 1, que l'arête de coupe (8) de l'élément coupant d'attaque (7C, 10) précité, etest pratiquement accolé par une face d'extrémité à une face contiguë d'extrémité de l'élément coupant d'attaque (7C, 10) ou d'un autre élément coupant associé (10A), immédiatement voisin sur la même lame (5).
- Outil de forage ou de carottage suivant la revendication 1, caractérisé en ce qu'une partie de chaque élément coupant associé (10A) est enfoncée dans la lame (5) pour sa fixation au corps d'outil (2) et en ce que, de préférence, l'élément coupant associé (10A) ainsi fixé présente une épaisseur sensiblement uniforme et une section transversale, prise le long d'un plan disposé à angle droit de l'axe longitudinal de couteau, qui est sensiblement circulaire, oblongue, elliptique ou ovale, avec une face de coupe façonnée de manière correspondante présentée au moins partiellement à la formation dans le sens de la rotation de l'outil.
- Outil de forage ou de carottage suivant l'une quelconque des revendications 1 et 2, caractérisé en ce que des éléments coupants secondaires (10) et/ou associés (10A) sont des éléments préfabriqués par frittage et comportant des grains abrasifs et un liant métallique.
- Outil de forage ou de carottage suivant l'une quelconque des revendications 1 à 3, caractérisé en ce que des éléments coupants en PDC (7) et/ou des éléments coupants secondaires (10) et/ou associés (10A) sont cylindriques et ont de préférence des diamètres égaux.
- Outil de forage ou de carottage suivant l'une quelconque des revendications 1 à 4, caractérisé en ce que le bord d'attaque (6) des lames (5) a la forme d'une hélice à rayon éventuellement variable et qui, au moins le long de ladite surface périphérique (3), tourne soit en sens inverse du sens de rotation (S) de forage soit dans le même sens à mesure qu'elle s'écarte de la face antérieure (4).
- Outil de forage ou de carottage suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que la largeur d'une lame (5), prise dans un plan de projection perpendiculaire à l'axe de rotation, s'accroít à mesure que l'on s'écarte de ce dernier sur la face antérieure (4) et/ou de celle-ci en direction d'une face postérieure (15) de l'outil (1).
- Outil de forage ou de carottage suivant la revendication 6, caractérisé en ce que le nombre d'éléments coupants associés (10A) disposés l'un derrière l'autre sur une même lame (5) et aux mêmes distances (D, R) précitées, radiale et parallèle à l'axe de rotation, s'accroít progressivement, notamment d'un élément coupant associé (10A), de préférence d'une longueur égale à celle des éléments coupants secondaires (10) précités, à mesure que la largeur de la lame (5) s'accroít.
- Outil de forage ou de carottage suivant l'une quelconque des revendications 1 à 7, caractérisé en ce que des éléments coupants secondaires (10) et/ou associés (10A) sont réalisés en une matière composite contenant des particules abrasives.
- Outil de forage ou de carottage suivant l'une quelconque des revendication 1 à 8, caractérisé en ce que des éléments secondaires (10) et/ou associés (10A) sont des diamants synthétiques thermostables.
- Outil de forage ou de carottage suivant l'une quelconque des revendications 1 à 9, caractérisé en ce que des ajutages (9) sont constitués par des éléments préfabriqués posés dans des emplacements prévus dans un moule de fabrication, en même temps qu'y sont posés, dans des emplacements adéquats, les éléments coupants en PDC (7), et/ou secondaires (10) et/ou associés (10A), le moule étant ensuite rempli avec des éléments solides et matières en poudre qui constituent, après infiltration de métal liquide, le corps (2) et les lames (5) proprement dits.
- Outil de forage suivant l'une quelconque des revendications 1 à 10, caractérisé en ce qu'au moins une lame (5) s'étend dans la zone centrale (15A) de la face antérieure (4) et comporte au moins un des éléments coupants en PDC (7) agencé pour agir au centre de cette face (4), l'arête de coupe (8) de cet élément coupant en PDC (7) appartenant au bord d'attaque (6) de ladite lame (5).
- Outil de forage ou de carottage suivant l'une quelconque des revendications 1 à 11, caractérisé en ce qu'au moins un élément coupant associé (10A) a une section transversale oblongue et en ce que de préférence la plus grande dimension de cette section transversale est orientée sensiblement perpendiculairement à un plan tangent à une enveloppe (15B) des éléments coupants (7, 10, 10A) à l'endroit de contact entre l'arête de coupe (11) de l'élément associé (10A) concerné et ladite enveloppe (15B).
- Outil de forage ou de carottage suivant l'une quelconque des revendications 1 à 12, caractérisé en ce que l'axe longitudinal d'au moins certains des éléments coupants en PDC (7) et/ou secondaires (10) présente une inclinaison par rapport à un plan perpendiculaire à l'axe de rotation, de manière à ce que leur face d'extrémité comportant l'arête de coupe (8) soit quelque peu tournée vers un fond de trou à forer.
- Outil de forage ou de carottage suivant l'une quelconque des revendications 1 à 13, caractérisé en ce que l'axe longitudinal d'au moins certains éléments secondaires (10) et/ou associés (10A) est compris chaque fois dans un plan perpendiculaire à l'axe de rotation.
- Outil de forage suivant l'une quelconque des revendications 1 à 14, caractérisé en ce que la face antérieure (4) est concave dans la zone centrale (15A) et en ce que les éléments coupants (7, 10, 10A) y sont disposés pour tailler un fond de trou de forage de forme sensiblement conique, de faible pente par rapport à un plan perpendiculaire à l'axe de rotation.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE9601042 | 1996-12-16 | ||
| BE9601042A BE1010801A3 (fr) | 1996-12-16 | 1996-12-16 | Outil de forage et/ou de carottage. |
| PCT/BE1997/000136 WO1998027311A1 (fr) | 1996-12-16 | 1997-12-16 | Outil de forage et/ou de carottage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0944765A1 EP0944765A1 (fr) | 1999-09-29 |
| EP0944765B1 true EP0944765B1 (fr) | 2003-02-26 |
Family
ID=3890144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97949846A Revoked EP0944765B1 (fr) | 1996-12-16 | 1997-12-16 | Outil de forage et/ou de carottage |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6283233B1 (fr) |
| EP (1) | EP0944765B1 (fr) |
| BE (1) | BE1010801A3 (fr) |
| CA (1) | CA2274152C (fr) |
| DE (1) | DE69719364T2 (fr) |
| NO (1) | NO328796B1 (fr) |
| WO (1) | WO1998027311A1 (fr) |
Families Citing this family (62)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB9708022D0 (en) * | 1997-04-21 | 1997-06-11 | Camco Int Uk Ltd | Curved blades and gauge |
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| US7248491B1 (en) | 2004-09-10 | 2007-07-24 | Xilinx, Inc. | Circuit for and method of implementing a content addressable memory in a programmable logic device |
| US7278499B2 (en) * | 2005-01-26 | 2007-10-09 | Baker Hughes Incorporated | Rotary drag bit including a central region having a plurality of cutting structures |
| GB0521693D0 (en) * | 2005-10-25 | 2005-11-30 | Reedhycalog Uk Ltd | Representation of whirl in fixed cutter drill bits |
| US20070261890A1 (en) * | 2006-05-10 | 2007-11-15 | Smith International, Inc. | Fixed Cutter Bit With Centrally Positioned Backup Cutter Elements |
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| US7703557B2 (en) * | 2007-06-11 | 2010-04-27 | Smith International, Inc. | Fixed cutter bit with backup cutter elements on primary blades |
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| US20120205160A1 (en) | 2011-02-11 | 2012-08-16 | Baker Hughes Incorporated | System and method for leg retention on hybrid bits |
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| US8720609B2 (en) * | 2008-10-13 | 2014-05-13 | Baker Hughes Incorporated | Drill bit with continuously sharp edge cutting elements |
| US20100089661A1 (en) * | 2008-10-13 | 2010-04-15 | Baker Hughes Incorporated | Drill bit with continuously sharp edge cutting elements |
| US8020641B2 (en) * | 2008-10-13 | 2011-09-20 | Baker Hughes Incorporated | Drill bit with continuously sharp edge cutting elements |
| US8450637B2 (en) | 2008-10-23 | 2013-05-28 | Baker Hughes Incorporated | Apparatus for automated application of hardfacing material to drill bits |
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| US20100108402A1 (en) * | 2008-10-31 | 2010-05-06 | Baker Hughes Incorporated | Downhole cutting tool and method of making |
| US20100122848A1 (en) * | 2008-11-20 | 2010-05-20 | Baker Hughes Incorporated | Hybrid drill bit |
| US8047307B2 (en) | 2008-12-19 | 2011-11-01 | Baker Hughes Incorporated | Hybrid drill bit with secondary backup cutters positioned with high side rake angles |
| EP2376676A2 (fr) | 2008-12-31 | 2011-10-19 | Baker Hughes Incorporated | Procédé et appareil pour application automatique de matériau de surfaçage de renfort sur des couteaux rotatifs de trépan de forage de type hybride, trépans hybrides comprenant de tels éléments de coupe à dents d'acier à surfaçage de renfort et procédé d'utilisation |
| US8991526B2 (en) | 2009-01-30 | 2015-03-31 | Drilformance Technologies, Llc | Drill bit |
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| US8079430B2 (en) * | 2009-04-22 | 2011-12-20 | Baker Hughes Incorporated | Drill bits and tools for subterranean drilling, methods of manufacturing such drill bits and tools and methods of off-center drilling |
| US8056651B2 (en) | 2009-04-28 | 2011-11-15 | Baker Hughes Incorporated | Adaptive control concept for hybrid PDC/roller cone bits |
| US8459378B2 (en) | 2009-05-13 | 2013-06-11 | Baker Hughes Incorporated | Hybrid drill bit |
| US8157026B2 (en) | 2009-06-18 | 2012-04-17 | Baker Hughes Incorporated | Hybrid bit with variable exposure |
| US8887839B2 (en) | 2009-06-25 | 2014-11-18 | Baker Hughes Incorporated | Drill bit for use in drilling subterranean formations |
| WO2011005994A2 (fr) | 2009-07-08 | 2011-01-13 | Baker Hughes Incorporated | Elément de découpe et procédé de formation associé |
| US8978788B2 (en) | 2009-07-08 | 2015-03-17 | Baker Hughes Incorporated | Cutting element for a drill bit used in drilling subterranean formations |
| EP2479003A3 (fr) | 2009-07-27 | 2013-10-02 | Baker Hughes Incorporated | Article abrasif |
| US9004198B2 (en) | 2009-09-16 | 2015-04-14 | Baker Hughes Incorporated | External, divorced PDC bearing assemblies for hybrid drill bits |
| US20110073379A1 (en) * | 2009-09-25 | 2011-03-31 | Baker Hughes Incorporated | Cutting element and method of forming thereof |
| US20110079442A1 (en) * | 2009-10-06 | 2011-04-07 | Baker Hughes Incorporated | Hole opener with hybrid reaming section |
| US8448724B2 (en) | 2009-10-06 | 2013-05-28 | Baker Hughes Incorporated | Hole opener with hybrid reaming section |
| CN105507817B (zh) | 2010-06-29 | 2018-05-22 | 贝克休斯公司 | 具有防钻头循旧槽结构的混合式钻头 |
| US8978786B2 (en) | 2010-11-04 | 2015-03-17 | Baker Hughes Incorporated | System and method for adjusting roller cone profile on hybrid bit |
| EA025749B1 (ru) | 2011-02-10 | 2017-01-30 | Смит Интернэшнл, Инк. | Вооружение для бурового долота с фиксированными резцами и других скважинных породоразрушающих инструментов |
| US9782857B2 (en) | 2011-02-11 | 2017-10-10 | Baker Hughes Incorporated | Hybrid drill bit having increased service life |
| CN104024556B (zh) | 2011-06-22 | 2016-06-29 | 史密斯国际公司 | 具有岩芯破碎特性的固定齿钻头 |
| US9353575B2 (en) | 2011-11-15 | 2016-05-31 | Baker Hughes Incorporated | Hybrid drill bits having increased drilling efficiency |
| CA2948648C (fr) | 2014-05-23 | 2019-03-12 | Baker Hugues Incorporated | Trepan hybride avec ensemble de fraise fixe mecaniquement |
| US11015394B2 (en) | 2014-06-18 | 2021-05-25 | Ulterra Drilling Technologies, Lp | Downhole tool with fixed cutters for removing rock |
| WO2015195817A1 (fr) * | 2014-06-18 | 2015-12-23 | Ulterra Drilling Technologies, L.P. | Trépan de forage |
| US11428050B2 (en) | 2014-10-20 | 2022-08-30 | Baker Hughes Holdings Llc | Reverse circulation hybrid bit |
| WO2017014730A1 (fr) | 2015-07-17 | 2017-01-26 | Halliburton Energy Services, Inc. | Trépan hybride à éléments de coupe à contre-rotation au centre |
| CN116025289A (zh) * | 2021-10-27 | 2023-04-28 | 中国石油天然气集团有限公司 | 连续后排齿pdc钻头 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1218567A (fr) * | 1958-12-17 | 1960-05-11 | Trépan pour le forage du sol | |
| DE3113109C2 (de) * | 1981-04-01 | 1983-11-17 | Christensen, Inc., 84115 Salt Lake City, Utah | Drehbohrmeißel für Tiefbohrungen |
| US4889017A (en) * | 1984-07-19 | 1989-12-26 | Reed Tool Co., Ltd. | Rotary drill bit for use in drilling holes in subsurface earth formations |
| US4991670A (en) * | 1984-07-19 | 1991-02-12 | Reed Tool Company, Ltd. | Rotary drill bit for use in drilling holes in subsurface earth formations |
| GB8711255D0 (en) * | 1987-05-13 | 1987-06-17 | Nl Petroleum Prod | Rotary drill bits |
| FR2620487B1 (fr) * | 1987-09-14 | 1989-12-01 | Vennin Henri | Trepan de forage monobloc rotatif |
| GB2218131B (en) * | 1988-05-06 | 1992-03-25 | Reed Tool Co | Improvements in or relating to rotary drill bits |
| US4981184A (en) * | 1988-11-21 | 1991-01-01 | Smith International, Inc. | Diamond drag bit for soft formations |
| GB2252574B (en) * | 1991-02-01 | 1995-01-18 | Reed Tool Co | Rotary drill bits and methods of designing such drill bits |
| US5186268A (en) * | 1991-10-31 | 1993-02-16 | Camco Drilling Group Ltd. | Rotary drill bits |
| US5244039A (en) * | 1991-10-31 | 1993-09-14 | Camco Drilling Group Ltd. | Rotary drill bits |
| US5314033A (en) * | 1992-02-18 | 1994-05-24 | Baker Hughes Incorporated | Drill bit having combined positive and negative or neutral rake cutters |
| US5337844A (en) * | 1992-07-16 | 1994-08-16 | Baker Hughes, Incorporated | Drill bit having diamond film cutting elements |
| GB9310500D0 (en) * | 1993-05-21 | 1993-07-07 | De Beers Ind Diamond | Cutting tool |
| GB9314954D0 (en) * | 1993-07-16 | 1993-09-01 | Camco Drilling Group Ltd | Improvements in or relating to torary drill bits |
| GB2298665B (en) * | 1995-03-08 | 1998-11-04 | Camco Drilling Group Ltd | Improvements in or relating to cutter assemblies for rotary drill bits |
| US5816346A (en) * | 1996-06-06 | 1998-10-06 | Camco International, Inc. | Rotary drill bits and methods of designing such drill bits |
| FR2756002B1 (fr) * | 1996-11-20 | 1999-04-02 | Total Sa | Outil de forage a lames avec taillants de reserve et canaux d'evacuation des deblais generes par les taillants |
-
1996
- 1996-12-16 BE BE9601042A patent/BE1010801A3/fr not_active IP Right Cessation
-
1997
- 1997-12-16 WO PCT/BE1997/000136 patent/WO1998027311A1/fr not_active Ceased
- 1997-12-16 US US09/319,491 patent/US6283233B1/en not_active Expired - Lifetime
- 1997-12-16 CA CA002274152A patent/CA2274152C/fr not_active Expired - Fee Related
- 1997-12-16 EP EP97949846A patent/EP0944765B1/fr not_active Revoked
- 1997-12-16 DE DE69719364T patent/DE69719364T2/de not_active Revoked
-
1999
- 1999-06-14 NO NO19992905A patent/NO328796B1/no not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0944765A1 (fr) | 1999-09-29 |
| CA2274152C (fr) | 2006-01-31 |
| NO992905L (no) | 1999-08-12 |
| NO328796B1 (no) | 2010-05-18 |
| US6283233B1 (en) | 2001-09-04 |
| NO992905D0 (no) | 1999-06-14 |
| DE69719364T2 (de) | 2003-12-04 |
| BE1010801A3 (fr) | 1999-02-02 |
| WO1998027311A1 (fr) | 1998-06-25 |
| DE69719364D1 (de) | 2003-04-03 |
| CA2274152A1 (fr) | 1998-06-25 |
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