EP0295045A2 - Trépan racleur rotatif avec des buses de nettoyage - Google Patents
Trépan racleur rotatif avec des buses de nettoyage Download PDFInfo
- Publication number
- EP0295045A2 EP0295045A2 EP88305172A EP88305172A EP0295045A2 EP 0295045 A2 EP0295045 A2 EP 0295045A2 EP 88305172 A EP88305172 A EP 88305172A EP 88305172 A EP88305172 A EP 88305172A EP 0295045 A2 EP0295045 A2 EP 0295045A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting elements
- bit body
- fluid
- bore hole
- generally
- 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.)
- Withdrawn
Links
- 238000009991 scouring Methods 0.000 title claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims abstract description 104
- 239000012530 fluid Substances 0.000 claims abstract description 84
- 238000005553 drilling Methods 0.000 claims description 35
- 239000010432 diamond Substances 0.000 claims description 24
- 229910003460 diamond Inorganic materials 0.000 claims description 22
- 230000006854 communication Effects 0.000 claims 3
- 238000004891 communication Methods 0.000 claims 3
- 230000015572 biosynthetic process Effects 0.000 description 16
- 238000005755 formation reaction Methods 0.000 description 16
- 230000002093 peripheral effect Effects 0.000 description 9
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 235000015076 Shorea robusta Nutrition 0.000 description 1
- 244000166071 Shorea robusta Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229910052729 chemical element Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008961 swelling Effects 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
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
-
- 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
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
Definitions
- This invention relates generally to drag type rotary drill bits, and more particularly to improvements in the arrangement of cutting elements and fluid discharge nozzles on the drill bit for obtaining a highly effective scouring action against the hole bottom immediately ahead of the associated cutting elements.
- PDC polycrystalline diamond compact
- Balling is a build up of formation chips or cuttings on the bit face or the hole bottom and is caused by sticky formations, such as sticky shales or similar formations having clays therein, adhering to the bottom of the hole and the cutting face of the bit. This balling condition not only deters drilling, but it also causes rapid heat deterioration of the cutting elements due to poor circulation and decreased cutting efficiency.
- This balling condition occurs primarily when using water based muds which cause a swelling of the clays. It is highly desirable to provide a bit dressed with polycrystalline diamond cutting elements which has the versatility to not only drill efficiently in soft, sticky formations when using water base muds, but also remains effective and durable when harder formations are encountered.
- U. S. Patent No. 4,098,363 dated July 4, 1978 has a plurality of nozzles for each row of cutting elements with the nozzles being arranged in a spiral path extending from the center of the bit to the gage of the bit.
- the nozzles do not direct streams of drilling fluid immediately ahead of the leading cutting elements, and since a large number of nozzles are provided, relatively small diameter orifices which are subject to clogging are required in order to maintain adequate discharge velocity.
- U. S. Patent No. 4,499,958 discloses a deep bladed design for a drill bit using polycrystalline diamond cutting elements but this design does not have a desirable cleaning effect for the hole bottom and the edges of the cutting elements. Also, this type bit may be subjected to considerable wear and breakage when harder formations are encountered because of the relatively small number of cutting elements that can be arranged on the blades and the relatively long projection of the cutting elements from the adjacent bit body or blade.
- U. S. Patent No. 4,505,342 discloses a drill bit which has a high density of polycrystalline diamond cutting elements, and has fluid nozzles directed at the well bore bottom. After the fluid impinges the well bore bottom a portion of the fluid flows at a relatively low velocity through the fluid channels directing it in front of rows of cutting elements in an attempt to adequately flush all of the cutting elements and clean the hole bottom. The fluid velocity resulting in these channels is too low, however, to prevent balling and to provide adequate cleaning of the hole bottom and the cutting elements when drilling soft sticky formations with water base muds.
- U. S. Patent Nos. 4,452,324; 4,471,845; 4,303,136; and 4,606,418 have disclosed polycrystalline diamond drill bits with relatively large numbers of nozzle orifices in the bit in an attempt to adequately clean all of the cutting elements on the bit.
- a large number of nozzle orifices will result in orifices of a small area and this will increase the probability of clogging of some of the nozzle orifices.
- a reduced velocity will result in the event the total orifice area for the bit is increased and this likewise will increase the probability of clogging of the nozzle orifices.
- the present invention discloses a drag type rotary drill bit which shapes the bottom hole in the formation so that a generally arcuate concave outer ring or annular surface is formed along the bottom hole surface.
- the cutting elements and associated nozzles are arranged so that the nozzles scour the hole bottom along the concave outer surface immediately ahead of the associated cutting elements for improving the cutting action of the cutting elements and thereby obtaining a high rate of penetration.
- the cutting elements are arranged in a plurality of rows extending in a generally radial direction along an arcuate path from adjacent the longitudinal centerline of the bit to the gage of the bit which defines the diameter of the borehole.
- Each row of cutting elements preferably is associated with one nozzle having an outwardly directed relatively large diameter fluid orifice to minimize clogging.
- the plurality of closely spaced cutting elements in each row are arranged along an arcuate path generally complementary to the adjacent annular concave surface of the bottom hole.
- the centerline of the outwardly directed stream of drilling fluid being discharged from each nozzle strikes the adjacent concave surface of the bottom hole at an angle of between around twenty-five (25) to sixty-five (65) degrees to the tangent of the adjacent curved concave surface thereby tending to scour or dig into the bottom hole surface for scouring at least a portion of the bottom immediately ahead of the associated cutting elements.
- the scouring action continues as the discharged drilling fluid is directed along the concave hole bottom surface in a direction generally parallel to the associated row of cutting elements and then flows upwardly along the generally cylindrical side of the hole.
- the fluid stream By striking the concave surface at an angle between twenty-five (25) to sixty-five (65) degrees the fluid stream is deflected in an upward direction by the concave arcuate surface and continues the scouring action as it flows along the concave surface to assist the upward flow of drilling fluid and entrained cuttings for removal from the hole.
- An additional object of the invention is to provide in combination with the radially extending arcuate rows of cutting elements, at least one nozzle for each row for directing a stream of drilling fluid against the adjacent arcuate concave bottom hole surface immediately in front of the associated row of cutting elements for the flow of fluid in an outward direction generally parallel to the associated row of cutting elements thereby to scour the concave bottom hole surface immediately before it is engaged in cutting contact by the adjacent associated cutting elements.
- diamond diamond
- polycrytalline diamond or “PDC” cutting elements, as used in the specification and claims herein shall be interpreted as including all diamond or diamond-like cutting elements having a hardness generally similar to the hardness of a natural diamond.
- a drag type rotary drill bit is shown generally at 10 having a generally cylindrical bit body 12 with an externally threaded pin 14 at its upper end. Pin 14 is threaded within the lower end of the drill string indicated generally at 16 which is suspended from a drilling rig at the surface for rotating drill bit 10.
- Drill bit body 12 has a longitudinally extending main fluid passage 18 which is adapted to receive drilling fluid or mud from a drilling rig for the drilling operation and a branch fluid line 19 leads from passage 18.
- Bit body 12 has an upper outer peripheral surface 20 forming an outer gage, and a lower outer peripheral face or surface 22 generally indicated which forms a suitable crown and includes a generally frusto-conical outer surface 24 between the lower end of peripheral surfaces 20 and 22.
- Extensions 26 have an outer arcuate surface 28 and the slots formed between extensions 26 provide a passage for the upward flow of drilling fluid and entrained cuttings.
- a leading planar surface 29 is formed by each extension 26. It is to be understood that bit body 12 can be formed of various types of crown designs for the face of the bit body depending, for example, on such factors as the type of formation or the mud program proposed for the formation.
- Bit body 12 may be formed of any suitable material, such as various types of steel or cast tungsten carbide.
- blades 30 extend in a generally radial direction from the frusto-conical surface 24 between output peripheral surface 20 and lower generally horizontal surface 22. Blades 30 are spaced circumferentially about frusto-conical surface 24 at ninety (90) degree intervals. Each blade 30 has a generally planar leading surface 32, a generally planar rear surface 34, and an arcuate outer edge surface 36 extending between planar surfaces 32 and 34.
- Each row of cutting elements 38 extends radially in a generally arcuate path along adjacent arcuate surface 36.
- Each cutting element 38 is identical and comprises a stud 40 formed of a hardened tungsten carbide material. Stud 40 as shown in Figure 4 fits within an opening 42 in blade 30 and is secured therein, for example, by an interference fit or by brazing. Stud 40 has a planar leading surface on which a generally cylindrical disc 44 is secured, such as by brazing. Disc 44 has a base 46 formed of tungsten carbide, an outer planar cutting face 48 defined by an outer diamond layer, and a peripheral cutting edge 50 extending about planar face 48. Cylindrical disc 44 with a diamond face and tungsten carbide base, as well known in the art, is manufactured by the Specialty Material Dept. of the General Electric Company at Worthington, Ohio and sold under the trademark "Stratapax”.
- cutting face 48 have a negative rake or be inclined with respect to the direction of rotation of drill bit 10.
- a negative rake angle of around twenty (20) degrees has been found to be satisfactory for most formations although it is believed that a negative rake between around five (5) degrees and around thirty-five (35) degrees will function adequately for a polycrystalline diamond face or a natural diamond face.
- the bore hole as shown particularly in Figure 3 is generally cylindrical and is defined by a cylindrical side surface A, a central generally flat bottom surface B, and an arcuate concave annular surface C extending between surfaces A and B.
- Arcuate concave surface C is formed by the arcuate rows of cutting elements 38 upon rotation of drill bit 10.
- lower face 22 has a pair of relatively small diameter fluid discharge orifices 52 for the discharge of drilling fluid from fluid passage 18 vertically downwardly against the bore hole bottom shown at B.
- a fluid discharge nozzle indicated generally at 54 as shown particularly in Figures 3 and 4.
- Discharge nozzle 54 is formed of a tungsten carbide material and is externally threaded at 56 for being screwed within an internally threaded opening 58 defining a smooth annular end surface 59. Openings 60 in the face of nozzle 54 adjacent end surface 59 are adapted to receive a suitable tool for securing nozzle 54 within threaded opening 58 for abutting engagement with an abutting end shoulder 62.
- a resilient 0-ring 64 is provided for sealing between nozzle 54 and bit body 12.
- Nozzle 54 defines a relatively large diameter fluid discharge orifice 66 which may circular or oval in shape to provide a laterally divergent stream or jet of fluid illustrated generally by broken lines at 68 on Figure 4.
- the spray angle of orifice 66 will normally be around five (5) degrees, for example, and a relatively large diameter of over around three-sixteenth (3/16) inch is preferred for orifice 66.
- the centerline of the jet of fluid being discharged from orifice 66 is shown at 70 and centerline 70 strikes concave surface C at a point P.
- the divergent fluid stream has a surface area of impingement I against surface C about point P.
- Centerline 70 with respect to a tangent T through point P is preferably around forty-five (45) degrees but satisfactory results are obtainable at an angle D between around twenty-five (25) degrees and sixty-five (65) degrees.
- the fluid Upon striking concave surface C at an angle D, the fluid tends to dig into or scour the area of impingement I, such as shown schematically in Figures 2 and 4, and then is deflected in an upward direction while continuing to scour the concave surface C as the fluid flows upward along the concave hole bottom and along the associated row of cutting elements 38.
- the scouring or scouring action of the fluid stream which is discharged at a high velocity of over one hundred (100) feet per second, clears or digs into the formation defined by the concave bottom hole surface and continues after striking the impingement areas A with the deflected fluid stream being directed upwardly by the concave bottom surface which continuously changes the direction of fluid flow.
- the flow of fluid after striking concave surface C is in a generally radial direction generally parallel to the row of cutting elements 38 and immediately ahead of the cutting elements.
- area I is scoured by a high velocity stream of drilling fluid from nozzle 54 and the scouring action continues as the stream flows outwardly along the concave hole bottom thereby improving the cutting effectiveness of a cutting elements 38 while providing drilling fluid for washing the cutting faces of cutting elements 38.
- FIG. 5-7 a separate embodiment of the invention is shown in which the rotary drill bit l0A is shown having an outer peripheral surface 20A and a lower generally hemispherical or bulbous surface 24A forming a smooth continuation of the outer peripheral surface 20A and terminating at a relatively small diameter generally horizontal lower central surface 22A.
- Junk slots 27A are provided at ninety (90) degree intervals along outer peripheral surface 20A to provide passageways for the upward flow of drilling fluid and entrained cuttings.
- Cutting elements 38A are mounted on the outer surface of drill bit 10A along frusto-conical or hemispherical surface 24A and extend upwardly in an arcuate radial path along outer peripheral surface 20A.
- Cutting elements 38A are identical to those shown in the embodiment of Figures 1-4 and have studs 40A fitting within openings 42A in body 12A of drill bit l0A.
- the rows of cutting elements 38A extend in a generally arcuate path radially from the centerline of the drill bit l0A.
- a fluid discharge nozzle 54A is provided for each row of cutting elements 38A and has an orifice 66A. The centerline of the discharged fluid stream from orifice 66A is illustrated at 70A.
- Centerline 70A strikes arcuate concave surface C of the bore hole at an angle D1 which is similar to angle D in the embodiment of Figures 1-4.
- Drilling fluid is received from branch fluid passage 19A and is discharged in a stream or jet having its centerline at 70A for impinging concave surface C at point P with the fluid stream scouring the bore bottom immediately ahead of the associated row of cutting elements 38A and being deflected upwardly by concave surface C for flow out of the bore hole.
- FIG. 5-7 does not utilize blades for the mounting of cutting elements 38A but instead, mounts cutting elements 38A into openings 42A arranged in drill bit body 12A.
- the arrangement of nozzles 54A and the fluid flow through orifices 66A is generally identical to that shown in the embodiment of Figures 1-4.
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)
- Drilling Tools (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US59933 | 1979-07-23 | ||
US5993387A | 1987-06-09 | 1987-06-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0295045A2 true EP0295045A2 (fr) | 1988-12-14 |
EP0295045A3 EP0295045A3 (fr) | 1989-10-25 |
Family
ID=22026237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88305172A Withdrawn EP0295045A3 (fr) | 1987-06-09 | 1988-06-07 | Trépan racleur rotatif avec des buses de nettoyage |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0295045A3 (fr) |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0365100A2 (fr) * | 1988-10-20 | 1990-04-25 | Shell Internationale Researchmaatschappij B.V. | Tête de forage à système rotatif pour forer autravers de formations collantes |
WO1990012191A1 (fr) * | 1989-04-06 | 1990-10-18 | Walton Paul G | Trepan triangulaire de forage de puits de petrole |
WO1993013290A1 (fr) * | 1991-12-30 | 1993-07-08 | Dresser Industries, Inc. | Trepan avec outil de coupe ameliore |
WO1996024744A1 (fr) * | 1995-02-07 | 1996-08-15 | Brit Bit Limited | Ameliorations apportees a des trepans ou les concernant |
FR2768456A1 (fr) * | 1997-09-16 | 1999-03-19 | Geophysique Cie Gle | Forage de trous pour l'enfouissement d'un systeme d'emission ou de reception sismique |
EP0872625A3 (fr) * | 1997-04-16 | 2000-04-05 | Camco International (UK) Limited | Trépans de forage rotatif avec buses |
EP0959224A3 (fr) * | 1998-05-22 | 2000-07-12 | Winton B. Dickey | Buse a orifice transversal dans un trépan de forage PDC |
GB2363415A (en) * | 1997-09-19 | 2001-12-19 | Baker Hughes Inc | Drill bit with oriented coolant nozzles and coolant channels |
CN102434090A (zh) * | 2010-09-29 | 2012-05-02 | 张家口汇洋机械有限公司 | 碾压式旋挖破岩钻斗 |
WO2012116153A1 (fr) * | 2011-02-24 | 2012-08-30 | Foro Energy, Inc. | Trépan laser-mécanique de haute puissance et procédés d'utilisation |
US8424617B2 (en) | 2008-08-20 | 2013-04-23 | Foro Energy Inc. | Methods and apparatus for delivering high power laser energy to a surface |
US8571368B2 (en) | 2010-07-21 | 2013-10-29 | Foro Energy, Inc. | Optical fiber configurations for transmission of laser energy over great distances |
US8627901B1 (en) | 2009-10-01 | 2014-01-14 | Foro Energy, Inc. | Laser bottom hole assembly |
US8662160B2 (en) | 2008-08-20 | 2014-03-04 | Foro Energy Inc. | Systems and conveyance structures for high power long distance laser transmission |
US9027668B2 (en) | 2008-08-20 | 2015-05-12 | Foro Energy, Inc. | Control system for high power laser drilling workover and completion unit |
US9074422B2 (en) | 2011-02-24 | 2015-07-07 | Foro Energy, Inc. | Electric motor for laser-mechanical drilling |
US9080425B2 (en) | 2008-10-17 | 2015-07-14 | Foro Energy, Inc. | High power laser photo-conversion assemblies, apparatuses and methods of use |
US9089928B2 (en) | 2008-08-20 | 2015-07-28 | Foro Energy, Inc. | Laser systems and methods for the removal of structures |
US9138786B2 (en) | 2008-10-17 | 2015-09-22 | Foro Energy, Inc. | High power laser pipeline tool and methods of use |
US9244235B2 (en) | 2008-10-17 | 2016-01-26 | Foro Energy, Inc. | Systems and assemblies for transferring high power laser energy through a rotating junction |
US9242309B2 (en) | 2012-03-01 | 2016-01-26 | Foro Energy Inc. | Total internal reflection laser tools and methods |
US9267330B2 (en) | 2008-08-20 | 2016-02-23 | Foro Energy, Inc. | Long distance high power optical laser fiber break detection and continuity monitoring systems and methods |
US9347271B2 (en) | 2008-10-17 | 2016-05-24 | Foro Energy, Inc. | Optical fiber cable for transmission of high power laser energy over great distances |
US9360631B2 (en) | 2008-08-20 | 2016-06-07 | Foro Energy, Inc. | Optics assembly for high power laser tools |
US9360643B2 (en) | 2011-06-03 | 2016-06-07 | Foro Energy, Inc. | Rugged passively cooled high power laser fiber optic connectors and methods of use |
US9664012B2 (en) | 2008-08-20 | 2017-05-30 | Foro Energy, Inc. | High power laser decomissioning of multistring and damaged wells |
US9669492B2 (en) | 2008-08-20 | 2017-06-06 | Foro Energy, Inc. | High power laser offshore decommissioning tool, system and methods of use |
US9719302B2 (en) | 2008-08-20 | 2017-08-01 | Foro Energy, Inc. | High power laser perforating and laser fracturing tools and methods of use |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4116289A (en) * | 1977-09-23 | 1978-09-26 | Shell Oil Company | Rotary bit with ridges |
EP0029535A1 (fr) * | 1979-11-19 | 1981-06-03 | General Electric Company | Eléments rapportés pour trépans de forage et scies |
US4452324A (en) * | 1980-10-21 | 1984-06-05 | Christensen, Inc. | Rotary drill bit |
US4478297A (en) * | 1982-09-30 | 1984-10-23 | Strata Bit Corporation | Drill bit having cutting elements with heat removal cores |
EP0155026A2 (fr) * | 1984-02-29 | 1985-09-18 | Shell Internationale Researchmaatschappij B.V. | Trépan de forage rotatif avec éléments de coupe comportant une fine couche abrasive |
EP0182770A1 (fr) * | 1984-11-12 | 1986-05-28 | DIAMANT BOART Société Anonyme | Outil de forage diamanté |
EP0219992A2 (fr) * | 1985-10-01 | 1987-04-29 | Reed Tool Company Limited | Trépan de forage rotatif |
GB2185506A (en) * | 1986-01-21 | 1987-07-22 | Shell Int Research | Rotary drill bit |
US4682663A (en) * | 1986-02-18 | 1987-07-28 | Reed Tool Company | Mounting means for cutting elements in drag type rotary drill bit |
-
1988
- 1988-06-07 EP EP88305172A patent/EP0295045A3/fr not_active Withdrawn
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4116289A (en) * | 1977-09-23 | 1978-09-26 | Shell Oil Company | Rotary bit with ridges |
EP0029535A1 (fr) * | 1979-11-19 | 1981-06-03 | General Electric Company | Eléments rapportés pour trépans de forage et scies |
US4452324A (en) * | 1980-10-21 | 1984-06-05 | Christensen, Inc. | Rotary drill bit |
US4478297A (en) * | 1982-09-30 | 1984-10-23 | Strata Bit Corporation | Drill bit having cutting elements with heat removal cores |
EP0155026A2 (fr) * | 1984-02-29 | 1985-09-18 | Shell Internationale Researchmaatschappij B.V. | Trépan de forage rotatif avec éléments de coupe comportant une fine couche abrasive |
EP0182770A1 (fr) * | 1984-11-12 | 1986-05-28 | DIAMANT BOART Société Anonyme | Outil de forage diamanté |
EP0219992A2 (fr) * | 1985-10-01 | 1987-04-29 | Reed Tool Company Limited | Trépan de forage rotatif |
GB2185506A (en) * | 1986-01-21 | 1987-07-22 | Shell Int Research | Rotary drill bit |
US4682663A (en) * | 1986-02-18 | 1987-07-28 | Reed Tool Company | Mounting means for cutting elements in drag type rotary drill bit |
Cited By (46)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0365100A2 (fr) * | 1988-10-20 | 1990-04-25 | Shell Internationale Researchmaatschappij B.V. | Tête de forage à système rotatif pour forer autravers de formations collantes |
EP0365100A3 (fr) * | 1988-10-20 | 1991-04-03 | Shell Internationale Researchmaatschappij B.V. | Tête de forage à système rotatif pour forer autravers de formations collantes |
WO1990012191A1 (fr) * | 1989-04-06 | 1990-10-18 | Walton Paul G | Trepan triangulaire de forage de puits de petrole |
WO1993013290A1 (fr) * | 1991-12-30 | 1993-07-08 | Dresser Industries, Inc. | Trepan avec outil de coupe ameliore |
US5346025A (en) * | 1991-12-30 | 1994-09-13 | Dresser Industries, Inc. | Drill bit with improved insert cutter pattern and method of drilling |
WO1996024744A1 (fr) * | 1995-02-07 | 1996-08-15 | Brit Bit Limited | Ameliorations apportees a des trepans ou les concernant |
EP0872625A3 (fr) * | 1997-04-16 | 2000-04-05 | Camco International (UK) Limited | Trépans de forage rotatif avec buses |
FR2768456A1 (fr) * | 1997-09-16 | 1999-03-19 | Geophysique Cie Gle | Forage de trous pour l'enfouissement d'un systeme d'emission ou de reception sismique |
GB2363415A (en) * | 1997-09-19 | 2001-12-19 | Baker Hughes Inc | Drill bit with oriented coolant nozzles and coolant channels |
GB2363415B (en) * | 1997-09-19 | 2002-06-26 | Baker Hughes Inc | Earth-boring drill bits with enhanced formation cuttings removal features |
EP0959224A3 (fr) * | 1998-05-22 | 2000-07-12 | Winton B. Dickey | Buse a orifice transversal dans un trépan de forage PDC |
US8757292B2 (en) | 2008-08-20 | 2014-06-24 | Foro Energy, Inc. | Methods for enhancing the efficiency of creating a borehole using high power laser systems |
US8997894B2 (en) | 2008-08-20 | 2015-04-07 | Foro Energy, Inc. | Method and apparatus for delivering high power laser energy over long distances |
US8424617B2 (en) | 2008-08-20 | 2013-04-23 | Foro Energy Inc. | Methods and apparatus for delivering high power laser energy to a surface |
US8511401B2 (en) | 2008-08-20 | 2013-08-20 | Foro Energy, Inc. | Method and apparatus for delivering high power laser energy over long distances |
US9664012B2 (en) | 2008-08-20 | 2017-05-30 | Foro Energy, Inc. | High power laser decomissioning of multistring and damaged wells |
US9360631B2 (en) | 2008-08-20 | 2016-06-07 | Foro Energy, Inc. | Optics assembly for high power laser tools |
US8636085B2 (en) | 2008-08-20 | 2014-01-28 | Foro Energy, Inc. | Methods and apparatus for removal and control of material in laser drilling of a borehole |
US8662160B2 (en) | 2008-08-20 | 2014-03-04 | Foro Energy Inc. | Systems and conveyance structures for high power long distance laser transmission |
US8701794B2 (en) | 2008-08-20 | 2014-04-22 | Foro Energy, Inc. | High power laser perforating tools and systems |
US9562395B2 (en) | 2008-08-20 | 2017-02-07 | Foro Energy, Inc. | High power laser-mechanical drilling bit and methods of use |
US8820434B2 (en) | 2008-08-20 | 2014-09-02 | Foro Energy, Inc. | Apparatus for advancing a wellbore using high power laser energy |
US8826973B2 (en) | 2008-08-20 | 2014-09-09 | Foro Energy, Inc. | Method and system for advancement of a borehole using a high power laser |
US8869914B2 (en) | 2008-08-20 | 2014-10-28 | Foro Energy, Inc. | High power laser workover and completion tools and systems |
US9284783B1 (en) | 2008-08-20 | 2016-03-15 | Foro Energy, Inc. | High power laser energy distribution patterns, apparatus and methods for creating wells |
US8936108B2 (en) | 2008-08-20 | 2015-01-20 | Foro Energy, Inc. | High power laser downhole cutting tools and systems |
US10036232B2 (en) | 2008-08-20 | 2018-07-31 | Foro Energy | Systems and conveyance structures for high power long distance laser transmission |
US9027668B2 (en) | 2008-08-20 | 2015-05-12 | Foro Energy, Inc. | Control system for high power laser drilling workover and completion unit |
US9719302B2 (en) | 2008-08-20 | 2017-08-01 | Foro Energy, Inc. | High power laser perforating and laser fracturing tools and methods of use |
US9267330B2 (en) | 2008-08-20 | 2016-02-23 | Foro Energy, Inc. | Long distance high power optical laser fiber break detection and continuity monitoring systems and methods |
US9089928B2 (en) | 2008-08-20 | 2015-07-28 | Foro Energy, Inc. | Laser systems and methods for the removal of structures |
US9669492B2 (en) | 2008-08-20 | 2017-06-06 | Foro Energy, Inc. | High power laser offshore decommissioning tool, system and methods of use |
US9244235B2 (en) | 2008-10-17 | 2016-01-26 | Foro Energy, Inc. | Systems and assemblies for transferring high power laser energy through a rotating junction |
US9138786B2 (en) | 2008-10-17 | 2015-09-22 | Foro Energy, Inc. | High power laser pipeline tool and methods of use |
US9080425B2 (en) | 2008-10-17 | 2015-07-14 | Foro Energy, Inc. | High power laser photo-conversion assemblies, apparatuses and methods of use |
US9327810B2 (en) | 2008-10-17 | 2016-05-03 | Foro Energy, Inc. | High power laser ROV systems and methods for treating subsea structures |
US9347271B2 (en) | 2008-10-17 | 2016-05-24 | Foro Energy, Inc. | Optical fiber cable for transmission of high power laser energy over great distances |
US8627901B1 (en) | 2009-10-01 | 2014-01-14 | Foro Energy, Inc. | Laser bottom hole assembly |
US8879876B2 (en) | 2010-07-21 | 2014-11-04 | Foro Energy, Inc. | Optical fiber configurations for transmission of laser energy over great distances |
US8571368B2 (en) | 2010-07-21 | 2013-10-29 | Foro Energy, Inc. | Optical fiber configurations for transmission of laser energy over great distances |
CN102434090A (zh) * | 2010-09-29 | 2012-05-02 | 张家口汇洋机械有限公司 | 碾压式旋挖破岩钻斗 |
US9074422B2 (en) | 2011-02-24 | 2015-07-07 | Foro Energy, Inc. | Electric motor for laser-mechanical drilling |
US9784037B2 (en) | 2011-02-24 | 2017-10-10 | Daryl L. Grubb | Electric motor for laser-mechanical drilling |
WO2012116153A1 (fr) * | 2011-02-24 | 2012-08-30 | Foro Energy, Inc. | Trépan laser-mécanique de haute puissance et procédés d'utilisation |
US9360643B2 (en) | 2011-06-03 | 2016-06-07 | Foro Energy, Inc. | Rugged passively cooled high power laser fiber optic connectors and methods of use |
US9242309B2 (en) | 2012-03-01 | 2016-01-26 | Foro Energy Inc. | Total internal reflection laser tools and methods |
Also Published As
Publication number | Publication date |
---|---|
EP0295045A3 (fr) | 1989-10-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0295045A2 (fr) | Trépan racleur rotatif avec des buses de nettoyage | |
US4848489A (en) | Drag drill bit having improved arrangement of cutting elements | |
US4794994A (en) | Drag drill bit having improved flow of drilling fluid | |
US4538691A (en) | Rotary drill bit | |
US4606418A (en) | Cutting means for drag drill bits | |
EP0314953B1 (fr) | Trépans de forage rotatif | |
US4640374A (en) | Rotary drill bit | |
US5732784A (en) | Cutting means for drag drill bits | |
EP0418706B1 (fr) | Trépan de forage pour formations dures et tendres | |
US3938599A (en) | Rotary drill bit | |
US6450270B1 (en) | Rotary cone bit for cutting removal | |
US5443565A (en) | Drill bit with forward sweep cutting elements | |
US5595252A (en) | Fixed-cutter drill bit assembly and method | |
US4883132A (en) | Drag bit for drilling in plastic formation with maximum chip clearance and hydraulic for direct chip impingement | |
US4429755A (en) | Drill with polycrystalline diamond drill blanks for soft, medium-hard and hard formations | |
US5992549A (en) | Cutting structures for rotary drill bits | |
US4687067A (en) | Crossflow rotary cone rock bit with extended nozzles | |
US4907662A (en) | Rotary drill bit having improved mounting means for multiple cutting elements | |
US5115873A (en) | Method and appartus for directing drilling fluid to the cutting edge of a cutter | |
US5417296A (en) | Rotary drill bits | |
US4665999A (en) | Variable length three-cone rock bit nozzles | |
US6065553A (en) | Split blade rotary drag type drill bits | |
US4527642A (en) | Earth-boring drill bit with rectangular nozzles | |
EP0192016B1 (fr) | Trépan rotatif | |
US4911729A (en) | Overburden eliminator rock drill bit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB NL |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB NL |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19900426 |