EP0533550B1 - Divergierende Düse für Bohrwerkzeug und Werkzeug, das diese Düse verwendet - Google Patents

Divergierende Düse für Bohrwerkzeug und Werkzeug, das diese Düse verwendet Download PDF

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Publication number
EP0533550B1
EP0533550B1 EP92402518A EP92402518A EP0533550B1 EP 0533550 B1 EP0533550 B1 EP 0533550B1 EP 92402518 A EP92402518 A EP 92402518A EP 92402518 A EP92402518 A EP 92402518A EP 0533550 B1 EP0533550 B1 EP 0533550B1
Authority
EP
European Patent Office
Prior art keywords
tool
nozzle
divergent
fluid
wall
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.)
Expired - Lifetime
Application number
EP92402518A
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English (en)
French (fr)
Other versions
EP0533550A1 (de
Inventor
Alain Besson
Bernard Pontneau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SECURITY DBS
Total
Original Assignee
SECURITY DBS
TOTAL
Total SE
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Filing date
Publication date
Application filed by SECURITY DBS, TOTAL, Total SE filed Critical SECURITY DBS
Publication of EP0533550A1 publication Critical patent/EP0533550A1/de
Application granted granted Critical
Publication of EP0533550B1 publication Critical patent/EP0533550B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0078—Nozzles used in boreholes

Definitions

  • the present invention relates to charges for a drilling tool working the rock by abrasion or shear, for example for a monobloc tool provided with diamond or diamond cutting blades or cutters crystalline or PDC, tungsten carbide, etc.
  • the factor predominant is not that of the destruction of the rock by hydraulic impact, but rather that of irrigation homogeneous of the entire active surface of the tool.
  • This result could certainly be obtained by equipping the tool monoblock of wide pipes, thus producing jets of fluid of large section and also having the advantage of do not be blocked by the rock cuttings, but, in the event that a rare but possible blockage occurs would result, unclogging would be difficult to perform, because in a large nozzle, the pressure drop is low. Yes the tool has several other wide bits not there will not be enough flow available to unblock the blocked nozzle.
  • a solution to promote the unblocking of debts could be to choose small section cross-sections passage, because the high pressure drop would allow to unblock. But then we fall back on the disadvantage that the small section faults become blocked easily.
  • US-A-4,185,706 relates to the use of due to cavitating effect mounted on a drilling tool wheels and intended to carry out the destruction of the rock by cavitation, i.e. under the action of mini-explosions which generate destructive shock waves, but such failures do not provide a solution to the problem of cleaning PDCs of monoblock tools.
  • Patent EP-A-0 146 252 relates to an assembly of elements intended to constitute a divergent duse resistant to very high pressures. But due to its wide angle of divergence this duse does not have a structure which allows it to improve cleaning, fluid distribution and tool cooling drilling.
  • the subject of the present invention is a duse allowing optimum irrigation, self-cleaning and cooling of a one-piece tool on which it is mounted.
  • the invention also has for subject a practically unbouchable duse in service and which can be easily unclogged in case of obstruction.
  • the Applicants have in fact found that as long as the angle of divergence of the nozzle remains less than 30 °, the fluid flowing in turbulent regime still sticks to the wall of the duse by Coanda effect, and that beyond this angle, vortex counter-currents appear which completely take off the fluid from the wall of the duse. In laminar regime, the limit angle is approximately 15 °.
  • the nozzle according to the invention does not perform mechanical retention of material since it is flared towards outside.
  • the pressure drop which intervenes is that which reigns at the level of its section which is the weakest.
  • the loss charge between the inside and outside of the duse is high, which favors the expulsion of the material plug, all the more since the fleeing wall of the duse does not oppose no resistance to plug.
  • the nozzle according to the invention performs an excellent irrigation of the tool due to the fact that the jet is divergent and can thus reach a larger area.
  • the energy of flow is on the other hand distributed in a large cone of diffusion and loses its power on impact.
  • the nozzle according to the invention combines both the qualities of the broad reasons, namely the difficulty of clogging and good irrigation, and that of due narrow, namely the existence of a pressure drop high and therefore greater ease in expelling the material plug.
  • the wall of the nozzle present, at the level of the most narrow, a slight annular notch turned towards the exterior and which defines a counter-cavity in which there is a slight depression which accentuates the Coanda effect, by sucking the fluid towards the divergent wall.
  • the invention also relates to a one-piece tool provided with divergent faults as described above.
  • the tool 10 is provided a nozzle 12 with divergent wall 16, the angle of which opening ⁇ is less than 30 °.
  • the irrigation fluid which arrives in turbulent regime adheres by Coanda effect to the divergent wall 16 and is ejected in the form of a divergent jet 18, without formation of countercurrents.
  • Figure 2 shows what happens in the case of a diverging nozzle with an opening angle greater than 30 °. We see here that the fluid no longer sticks to the divergent wall 16, and that countercurrents are created vortex 20. Most of the fluid flow diverges very little.
  • the duse in Figure 1 is easy to unclog since it diverges in the direction of circulation of the fluid. It therefore amounts to a wide section nozzle, and at the same time it generates a high pressure drop, as in a small section duse. In addition, thanks to its divergent flow, it allows a large irrigation of the tool without favoring certain areas to the detriment other areas.
  • a setback 22 which creates a slight depression in the cavity 24 as well formed. This depression sucks in the fluid and therefore accentuates the effect of bonding of the fluid to the divergent wall.
  • the duse can have any form of section suitable, for example circular, square or rectangular. Its wall may have a straight generator as in Figure 1, or convex.
  • the divergent part may be preceded by a converging part 26 or cylindrical.
  • the nozzle according to the invention is particularly suitable monoblock drilling tools, but in some applications, it can also equip tools tricones.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Earth Drilling (AREA)
  • Food-Manufacturing Devices (AREA)
  • Beans For Foods Or Fodder (AREA)

Claims (4)

  1. Düse (12), die in einem Einblock-Bohrwerkzeug (10) angeordnet ist und von dem Typ ist, der eine innere Seitenwandung (16) umfaßt, die von einem im Inneren des Werkzeugs befindlichen Eintrittsende zu einem an der Außenfläche des Werkzeugs befindlichen Austrittsende divergiert,
    dadurch gekennzeichnet,
    daß der Divergenzwinkel (a) der divergierenden Wandung (16) derart ist, daß sich der durch die Düse ausströmende Fluidstrahl aufgrund des Coanda-Effekts an die divergierende Wandung (16) preßt, wobei der Winkel für diesen Effekt kleiner ist als 30°.
  2. Düse nach Anspruch 1, dadurch gekennzeichnet, daß an dem Eintrittsende der divergierenden Wandung (16) eine zu der Außenfläche des Werkzeugs weisende ringförmige Seitenverschiebung (22) ausgeformt ist, die eine ringförmige Kavität definiert, in welcher ein Unterdruck herrscht, der den Effekt der Adhäsion des Fluidstroms an die divergierende Wandung verstärkt.
  3. Düse nach Anspruch 1, dadurch gekennzeichnet, daß der divergierenden Wandung (16) in Bezug auf die Flußrichtung des Fluids ein zylindrischer Durchlaß oder ein konvergierender Durchlaß (26) vorgeordnet ist.
  4. Einblock-Bohrwerkzeug, das mit mindestens einer Düse nach einem der vorstehenden Ansprüche ausgestattet ist.
EP92402518A 1991-09-16 1992-09-15 Divergierende Düse für Bohrwerkzeug und Werkzeug, das diese Düse verwendet Expired - Lifetime EP0533550B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9111371 1991-09-16
FR9111371A FR2681372B1 (fr) 1991-09-16 1991-09-16 Duse divergente pour outil de forage, et outil utilisant une telle duse.

Publications (2)

Publication Number Publication Date
EP0533550A1 EP0533550A1 (de) 1993-03-24
EP0533550B1 true EP0533550B1 (de) 1998-10-28

Family

ID=9416962

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92402518A Expired - Lifetime EP0533550B1 (de) 1991-09-16 1992-09-15 Divergierende Düse für Bohrwerkzeug und Werkzeug, das diese Düse verwendet

Country Status (9)

Country Link
US (1) US5293946A (de)
EP (1) EP0533550B1 (de)
AU (1) AU654738B2 (de)
BR (1) BR9203590A (de)
CA (1) CA2078269C (de)
DE (1) DE69227430T2 (de)
FR (1) FR2681372B1 (de)
NO (1) NO305916B1 (de)
RU (1) RU2062862C1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022204407A1 (en) * 2021-03-24 2022-09-29 Baker Hughes Oilfield Operations Llc Fluid inlet sleeves for improving fluid flow in earth-boring tools, earth-boring tools having fluid inlet sleeves, and related methods

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE170251T1 (de) * 1991-10-01 1998-09-15 Michael A Silveri Elektrolytischer schwimmbadreiniger
DE4225439C2 (de) * 1992-07-31 1996-08-01 Reburg Patentverwertungs Gmbh Bohrvorrichtung
US5601153A (en) * 1995-05-23 1997-02-11 Smith International, Inc. Rock bit nozzle diffuser
US5794725A (en) * 1996-04-12 1998-08-18 Baker Hughes Incorporated Drill bits with enhanced hydraulic flow characteristics
US5951006A (en) * 1998-05-22 1999-09-14 Xerox Corporation Modular air jet array with coanda exhausting for module decoupling
US6585063B2 (en) * 2000-12-14 2003-07-01 Smith International, Inc. Multi-stage diffuser nozzle
US6817550B2 (en) * 2001-07-06 2004-11-16 Diamicron, Inc. Nozzles, and components thereof and methods for making the same
CA2458124C (en) * 2002-01-14 2011-03-08 China Petroleum & Chemical Corporation A power transmission mechanism, a fluid-driven impactor and its use
US7802640B2 (en) 2005-08-23 2010-09-28 Halliburton Energy Services, Inc. Rotary drill bit with nozzles designed to enhance hydraulic performance and drilling fluid efficiency
US7566013B2 (en) * 2005-11-08 2009-07-28 Mark Maclean-Blevins System for failsafe controlled dispensing of liquid material
US7753288B2 (en) * 2005-11-08 2010-07-13 Maclean-Blevins Mark T System for failsafe controlled dispensing of liquid material
US7866626B1 (en) 2006-03-01 2011-01-11 Mark Maclean-Blevins Hydraulically controlled in-line valve apparatus
US7878798B2 (en) * 2006-06-14 2011-02-01 John Zink Company, Llc Coanda gas burner apparatus and methods
US8257147B2 (en) * 2008-03-10 2012-09-04 Regency Technologies, Llc Method and apparatus for jet-assisted drilling or cutting
RU2461702C1 (ru) * 2011-05-05 2012-09-20 Открытое акционерное общество "Татнефть" имени В.Д. Шашина Способ разработки залежи высоковязкой нефти (варианты)
US20140216823A1 (en) * 2013-02-01 2014-08-07 Varel Europe S.A.S. Non-cylindrical nozzle socket for drill bits
US20220025745A1 (en) * 2018-10-01 2022-01-27 Rgl Reservoir Management Inc. Nozzle for gas choking
CA3119835A1 (en) 2018-11-13 2020-05-22 Rubicon Oilfield International, Inc. Three axis vibrating device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4429755A (en) * 1981-02-25 1984-02-07 Williamson Kirk E Drill with polycrystalline diamond drill blanks for soft, medium-hard and hard formations
GB2224054A (en) * 1988-09-29 1990-04-25 Shell Int Research Drill bit equipped with vortex nozzles and vortex nozzle for use in the bit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4185706A (en) * 1978-11-17 1980-01-29 Smith International, Inc. Rock bit with cavitating jet nozzles
US4531592A (en) * 1983-02-07 1985-07-30 Asadollah Hayatdavoudi Jet nozzle
ZA848626B (en) * 1983-11-08 1985-06-26 Flow Ind Inc Leakproof,high pressure,high velocity,fluid jet cutting nozzle assembly
US4703814A (en) * 1986-01-16 1987-11-03 Hughes Tool Company - Usa Earth boring bit having a replaceable, threaded nozzle with wrench socket
US4723612A (en) * 1986-10-31 1988-02-09 Hicks Dusty F Bit, nozzle, cutter combination
US5009272A (en) * 1988-11-25 1991-04-23 Intech International, Inc. Flow pulsing method and apparatus for drill string

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4429755A (en) * 1981-02-25 1984-02-07 Williamson Kirk E Drill with polycrystalline diamond drill blanks for soft, medium-hard and hard formations
GB2224054A (en) * 1988-09-29 1990-04-25 Shell Int Research Drill bit equipped with vortex nozzles and vortex nozzle for use in the bit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Grand Larousse Universel, 1991, Tome 4, Page 2332 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022204407A1 (en) * 2021-03-24 2022-09-29 Baker Hughes Oilfield Operations Llc Fluid inlet sleeves for improving fluid flow in earth-boring tools, earth-boring tools having fluid inlet sleeves, and related methods

Also Published As

Publication number Publication date
US5293946A (en) 1994-03-15
DE69227430T2 (de) 1999-07-01
NO305916B1 (no) 1999-08-16
NO923585L (no) 1993-03-17
RU2062862C1 (ru) 1996-06-27
NO923585D0 (no) 1992-09-15
FR2681372B1 (fr) 1998-07-17
CA2078269C (fr) 2003-07-29
BR9203590A (pt) 1993-04-13
CA2078269A1 (fr) 1993-03-17
AU654738B2 (en) 1994-11-17
AU2456292A (en) 1993-03-18
DE69227430D1 (de) 1998-12-03
EP0533550A1 (de) 1993-03-24
FR2681372A1 (fr) 1993-03-19

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