US2855182A - Replaceable nozzle for drill bits - Google Patents

Replaceable nozzle for drill bits Download PDF

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Publication number
US2855182A
US2855182A US420994A US42099454A US2855182A US 2855182 A US2855182 A US 2855182A US 420994 A US420994 A US 420994A US 42099454 A US42099454 A US 42099454A US 2855182 A US2855182 A US 2855182A
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US
United States
Prior art keywords
nozzle
groove
shoulder
passage
enlarged
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
US420994A
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English (en)
Inventor
Lyle L Payne
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.)
Hughes Tool Co
Original Assignee
Hughes Tool Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hughes Tool Co filed Critical Hughes Tool Co
Priority to US420994A priority Critical patent/US2855182A/en
Priority to DEH22261A priority patent/DE1022173B/de
Priority to CH327606D priority patent/CH327606A/de
Application granted granted Critical
Publication of US2855182A publication Critical patent/US2855182A/en
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
    • E21B10/08—Roller bits
    • E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids

Definitions

  • This invention relates to a well drilling bit and more particularly to the provision of a flushing fluid nozzle therefor which may be easily installed, or replaced by a nozzle of different size or internal contour.
  • the bit to which the invention pertains may be of any conventional form wherein a flushing fluid is pumped downwardly therethrough and is directed by the nozzle to a desired portion of the bottom of the well bore. It is customary to provide a nozzle of wear resistant material such as cast tungsten carbide, sintered tungsten carbide, a ceramic material or other wear resistant material. Diflicnlty has been experienced in securing such nozzles in place as by welding, brazing, cementing and the like, and the installation of the nozzle must of necessity be carried out in a well equipped shop.
  • the present invention provides a structure wherein the nozzles may be easily installed in the field and hence replacement with nozzles of a selected size may be effected so that a bit can be readily adapted to properly utilize the hydraulic replaced but which is held securely in place and at the same time a seal between the nozzle and the bit head is assured throughout the useful life of the bit structure.
  • Another object is to provide a well drill in which the exit of the passage for flushing fluid from interior to the exterior of the drill is counterbored to provide a shoulder which determines the final operating position of the nozzle mounted therein, a releasable fastening means being operable to hold the nozzle in place.
  • Still another object is to provide a releasable nozzle having a fluid tight seal with the surrounding structure to prevent leakage.
  • Fig. l is a side elevational view of a conventional well drill shown partly in section and showing an embodiment of the invention
  • Fig. 2 is a view taken on line 22 in Fig. 1;
  • Fig. 3 is an enlarged sectional view showing an alternate arrangement of the sealing means between the nozzle and the bit body;
  • Fig. 4 is a view similar to that of Fig. 3 but showing an alternate sealing structure used when the nozzle is insertable from within the bit head.
  • a drill bit of the rolling cutter type is shown at 1 and comprises the head 2 having downwardly extending legs 3 within which are mounted the rolling cutters 4 as is well known in the art.
  • the head 2 has peripheral downwardly extending bosses 5 and within each boss is a passage 6 which communicates between the interior and exterior of the bit head for the flow of flushing fluid which emerges from the passage by Way of the nozzle 7 shown in greater detail in Figs. 2, 3 and 4. While a bit of the rolling cutter type is shown it is to be understood that the invention may also be utilized with other types of bits and the invention alsocomprehends the use of a single fluid passage in the bit or a plurality of such passages.
  • the passage 6 is counterbored at 8 to form a shoulder 9,. which as shown in Figs. 1 to 3 inclusive faces downwardly and forms an abutment for the upper end of the nozzle.
  • the internal diameter of the counterbore 8 is slightly greater than the outer diameter of the nozzle 7 whereby the nozzle may be readily slid into the counterbore or removed therefrom.
  • a peripheral groove 10 is formed in the wall of the counterbore spaced a suificient distance from the shoulder 9 that the nozzle, when in terminal position, lies between the shoulder 9 and such groove.
  • a snap ring 11 is contracted and is permitted to expand and enter the groove 10.
  • This ring is of such axial thickness that it fits snugly within the groove 10 and is of such radial diameter that it underlies a portion of the lower face of the nozzle. It seems apparent that any outward thrust upon the nozzle 7 is resisted by the shear strength of the snap ring 11 and in this manner the nozzle is securely held in place at all times while the bit is in use.
  • the nozzle 7 is interiorly contoured as shown at 12 to provide a streamlined reduction in cross section so that the velocity of the flushing fluid is greatly increased as it passes through the nozzle. There is, therefore, a large pressure drop between the entrance and the exit of the nozzle and this hydraulic condition effects a force which tends to extrude the nozzle from within the counterbore 8. This force is overcome by the snap ring 11 in the manner just described.
  • the nozzle 7 has a peripheral groove 15 into which is compressed a seal ring 16 of deformable material, such as rubber, such ring normally having an oval or circular radial cross section.
  • a seal ring 16 of deformable material, such as rubber, such ring normally having an oval or circular radial cross section.
  • the seal ring 16 may be of any suitable flexible deformable material and that the dimensions of the ring with relationship to the groove 15 is such that the ring is under initial compression when installed in the groove and the nozzle is in position within the counterbore 8.
  • Fig. 3 shows an alternate arrangement for providing an efiicient fluid tight seal about the nozzle 7.
  • the groove 15' to receive the seal ring 16 is formed in the softer metal of the bit head 2 and at the same time the groove does not in any way aifect the strength of the nozzle nor does it entail formation of the groove in the harder material of the nozzle.
  • the outer end of the passage 6 is provided with a counterbore 8 which forms the shoulder 9 spaced from the end of the passage.
  • the groove 15 in the nozzle as shown in Fig. l or the groove 15' as shown on the inner wall of the counterbore in Fig. 2 is provided with a seal ring 16 of suitable dimensions and material. The nozzle is then inserted into the counterbore until the inner end of the nozzle engages the shoulder 9 after which the snap ring 11 is Fatented Oct. 7, 1958 located within the groove 10 at the lower end of the counterbore. The nozzle is thus held securely but releasably, in place and the seal ring 16 serves to prevent leakage of fluid past the nozzle.
  • the nozzle 7 or 7 can be removed by merely retracting and removing the snap ring 11 and then sliding the nozzle from within its associated counterore
  • an enlargement 8' is formed inwardly'from the end 19 of the boss and in this manner there is provided an internal and upwardly facing shoulder 20 proximate the end of the boss.
  • the lower end of the nozzle 7"" is reduced peripherally at 21 to slidably enter the bore below the shoulder 20.
  • This reduction in cross section also forms a downwardly facing shoulder 22 on the nozzle and above which the diameter of the nozzle is such as to slidably fit within the enlargement 8'.
  • the reduced portion 21 of the nozzle 7"" is also provided with a peripheral groove 23' which is so spaced from the shoulder 22 that the seal ring 16 is sufliciently compressed to form a fluid tight seal when the groove 23 lies just below the end 19 of the boss 5.
  • a snap ring is then expanded and placed about the lower end of the nozzle and permitted to enter the groove 23 so that a radially extending portion of the ring, overlies the end 19 of the boss.
  • the invention comprehends the provision of a replaceable nozzle in earth boring hits, the structure being such that the nozzle may be readily installed or replaced and an eflicient seal is-provided about the nozzle to resist leakage during normal operation.
  • a body having cutter means mounted thereon and a passage for discharging. drilling fluid to one side of saidv cutter means and against the bottom. of the well bore being drilled by the drillbit, the lower. portion of said passage having an enlarged bore oftcircular cross-section. providinga downwar-ly facing shoulder in the upper endofsaid enlarged bore; said enlarged bore being disposedto one side of the longitudinal axis of the body to provide access to said enlarged bore with said. cutter means mounted on said body; a replaceable hard, britt1e;.
  • substantially non-machinable, molded nozzle of circular cross-section adapted to be slipped upwardlyv and without rotation into said enlarged bore with the upper end of said nozzle adjacent said shoulder while said cutter means is mounted on said body; said nozzle terminatingwithin said body; but proximate the lower' end thereof andhavingan internal diameter at its lower portion substantially less than the internal diameter of said nozzle at its upper end; said body having a groove therein" surrounding said nozzle; an annular seal in said groove engagingthe side exterior of said nozzleto'prevent fluid-leakage around said nozzle exterior; and a removable annular retainer member mounted in said body and engaging said body and said nozzle at the lower end ofsaid-nozzle to retain said nozzle adjacent said shoulder and prevent downward movement of said nozzle from said enlarged bore, said retainer member being adapted to be mounted in engagement with said body and nozzle while said cuter means is mountedv on said body;
  • a body having cutter means mounted thereon and-a passage for discharging drilling fluid to one side of said cutter means and againstthe bottom of the well bore being drilled by the drill bit, the lower portion of said passage having an enlarged bore of circular: cross-section providing a.
  • said enlarged bore being disposed to one side of the longitudinal axis of the body to provide access to said enlarged bore with said cutter means mounted on said body; a replaceable hard, brittle, substantially non-machinable, molded nozzle of circular cross-section adpated to be slipped upwardly and without rotation into said enlarged bore with the upper end of said nozzle adjacent said shoulder while said cutter means is mounted on said body; said nozzle terminating within said body but proximate the lower end thereof and having an internal diameter at is lower partion substantially less than the internal diameter of said nozzle at its upper end; said body having a groove therein surrounding said nozzle; an annular seal in said groove engaging the side exterior of said nozzle to prevent fluid leakage around said nozzle exterior; said body having a lower groove adjacent the lower end of said nozzle; and an expansible and contractible annular member in: said lower groove engageable with said nozzle at its lower end to retain s'a'id' nozzle adjacen
  • a jetting'device comprising a longitudinally extending body portion having a flow passage ther'etlirough for conducting fluid',t he discharge end of said passage being enlarged to provide an annular" shoulder, a wear resistant, substantially non-machinable, molded nozzle of eircula'r cross-section slidabl'y positioned in said enlarged passage portion adjacent said shoulder and terminating within said body portion but proximate the end thereof, said nozzle having an internal diameter at its outlet portion substantially less than the internal diameter of said nozzle at-its' inlet' end, said body portion having a first annular" groove insaid' enlarged passage portion, an an'r'nilar's'eal in said groove engaging.
  • said body portion having a second annular groove in said enlarged passage portion longitudinally spaced from said first groove and adjacent the said discharge end, and a snap ring positioned-in said second groove and abutting the end of said nozzle to'retain said nozzle adjacent said' shoulder and prevent outward movement of said noz-zle fromsaidpassage.
  • a body member having cutter meansmounted thereon and a passage for discharging drillingfluid to'one side of said cutter means and against; the bottom of the well bore being drilled by the drill bit, the lower portion of said passage having an enlarged bore of circular cross-section providing a downwardly facing shoulderin upper end of said enlarged bore; said enlarged bore being disposed to one side of the-longitudinal-axis of the body member to provide access to saidenlarged bore with said cutter means mounted on said body member; a replaceable hard, brittle, substantialy non-machinable, molded nozzle member of circular cross-section adapted to he slipped upwardly and without rotation intosaid enlarged'bore with the upper end of said nozzle member adjacent said shoulder while said cutter meansis mounted on said body member; said nozzle member terminating within said body member but proximate the lower cnd'thereof and-having an internaldiameter at its lower portion substantially less than the intern'al diameter of said nozzle member at its upper:
  • a body member having cutter means mounted thereon and a passage for discharging drilling fluid to one side of said cutter means and against the bottom of the well bore being drilled by the drill bit, the lower portion of said passage having an enlarged bore of circular cross-section providing a downwardly facing shoulder in the upper end of said enlarged bore; said enlarged bore being disposed to one side of the longitudinal axis of the body member to provide access to said enlarged bore
  • said cutter means mounted on said body member;
  • a replaceable hard, brittle, substantially non-machinable, molded nozzle member of circular cross-section adapted to be slipped upwardly and without rotation into said enlarged bore with the upper end of said nozzle member adjacent said shoulder while said cutter means is mounted on said body member; said nozzle member terminating within said body member but proximate the lower end thereof and having an internal diameter at its lower portion substantially less than the internal diameter of said nozzle member at its upper end; one of said members having an annular groove therein at the side interface of the members; an annular
  • a jetting device comprising a longitudinally extend ing body member having a flow passage therethrough for conducting fluid, the discharge end of said passage being enlarged to provide an annular shoulder, a wear resistant, substantially non-machinable, molded nozzle member of circular cross-section slidably positioned in said enlarged passage portion adjacent said shoulder and terminating within said body member but proximate the end thereof, said nozzle member having an internal diameter at its outlet portion substantially less than the internal diameter of said nozzle member at its inlet end, one of said members having a first annular groove at said enlarged passage portion and at the side interface of said members, an annular seal in said groove engaging the side surface of the other of said members to prevent fluid flow around the exterior of said nozzle member, said body member having a second annular groove in said enlarged passage portion longitudinally spaced from said first groove and adjacent the said discharge end, and a removable annular retainer member in said second groove and engaging said body member and nozzle member to retain said nozzle member adjacent said shoulder and prevent outward movement of said nozzle member from said
  • a jetting device comprising a longitudinally extending body portion having a flow passage therethrough for conducting fluid, the discharge end of said passage being enlarged to provide an annular shoulder, a Wear resistant, substantially non-machinable, molded nozzle of circular cross-section slidably positioned in said enlarged passage portion adjacent said shoulder and terminating within said body portion but proximate the end thereof, said nozzle having an internal diameter at its outlet portion substantially less than the internal diameter of said nozzle at its inlet end, said body portion having a first annular groove in said enlarged passage portion, an annular seal in said groove engaging the side exterior of said nozzle to prevent fluid flow around the exterior of said nozzle, said body portion having a second annular groove in said enlarged passage portion longitudinally spaced from said first groove and adjacent the said discharge end, and a removable annular retainer member positioned in said second groove and abutting said nozzle at the outer end of said nozzle to retain said nozzle adjacent said shoulder and prevent outward movement of said nozzle from said passage.
  • a jetting device comprising a longitudinally extending body portion having a flow passage therethrough for conducting fluid, the discharge end of said passage being enlarged to provide an annular shoulder, a wear resistant, substantially non-machinable, molded nozzle of circular cross-section slidably positioned in said enlarged passage portion adjacent said souldlder and terminating Within said body portion but proximate the end thereof, said nozzle having an internal diameter at its outlet portion substantially less than the internal diameter of said nozzle at its inlet end, a peripheral groove in said nozzle intermediate its ends, an annular seal in said groove engaging the side wall of said enlarged passage portion to prevent fluid flow around the exterior of the nozzle, said body portion having annular groove in said enlarged passage portion and adjacent the discharge end thereof, and a removable annular retainer member positioned in said annular groove and abutting said nozzle at its outer end to retain said nozzle adjacent said shoulder and prevent outward movement of said nozzle from said passage.

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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)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
US420994A 1954-04-05 1954-04-05 Replaceable nozzle for drill bits Expired - Lifetime US2855182A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US420994A US2855182A (en) 1954-04-05 1954-04-05 Replaceable nozzle for drill bits
DEH22261A DE1022173B (de) 1954-04-05 1954-11-29 Auswechselbare Duese fuer Drehbohrmeissel
CH327606D CH327606A (de) 1954-04-05 1954-11-30 Bohrkopf für Erdbohrer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US420994A US2855182A (en) 1954-04-05 1954-04-05 Replaceable nozzle for drill bits

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US2855182A true US2855182A (en) 1958-10-07

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US420994A Expired - Lifetime US2855182A (en) 1954-04-05 1954-04-05 Replaceable nozzle for drill bits

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US (1) US2855182A (de)
CH (1) CH327606A (de)
DE (1) DE1022173B (de)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2987262A (en) * 1959-11-24 1961-06-06 Lodding Engineering Corp Removable and replaceable shower device
DE1124897B (de) * 1960-05-31 1962-03-08 Smith Tool Co Eine Nach Den Ge Rollenmeissel mit im Spuelkanal einsetzbarer Duese
US3070182A (en) * 1961-09-21 1962-12-25 John F Runte Self-cleaning fluid circulating drill bit
US3084751A (en) * 1960-04-29 1963-04-09 Dresser Ind Drill bit nozzle
US3096834A (en) * 1960-08-26 1963-07-09 Chicago Pneumatic Tool Co Jetting device for rock bit
US3111179A (en) * 1960-07-26 1963-11-19 A And B Metal Mfg Company Inc Jet nozzle
US3112803A (en) * 1962-01-02 1963-12-03 Jersey Prod Res Co Diamond drill bit
US3115200A (en) * 1957-08-28 1963-12-24 Reed Roller Bit Co Drill bit nozzle assembly
US3120284A (en) * 1959-08-17 1964-02-04 Globe Oil Tools Co Jet nozzle for drill bit
US3120348A (en) * 1962-09-27 1964-02-04 Valve Corp Of America Plastic sprayer construction for aerosol devices
DE1178806B (de) * 1961-05-22 1964-10-01 Hughes Tool Co Rollenmeissel fuer ein mit gasartiger Spuelung arbeitendes Bohrverfahren
US3156026A (en) * 1961-12-04 1964-11-10 Ben F Kelley Co Inc Slip bowl
US3685601A (en) * 1971-03-01 1972-08-22 Murphy Ind Inc G W Drill bit
US4378853A (en) * 1981-08-31 1983-04-05 Smith International, Inc. Cavitation nozzle plate adapter for rock bits
US4533005A (en) * 1983-11-21 1985-08-06 Strata Bit Corporation Adjustable nozzle
US4739845A (en) * 1987-02-03 1988-04-26 Strata Bit Corporation Nozzle for rotary bit
US5601153A (en) * 1995-05-23 1997-02-11 Smith International, Inc. Rock bit nozzle diffuser
US6216959B1 (en) 1997-10-17 2001-04-17 Fluid-Quip, Inc. Nozzle for centrifuge rotors and method of removing same
US6511005B2 (en) 2001-03-30 2003-01-28 Fluid-Quip, Inc. Bowl centrifuge nozzle
US20050121235A1 (en) * 2003-12-05 2005-06-09 Smith International, Inc. Dual property hydraulic configuration
WO2008027481A1 (en) * 2006-08-31 2008-03-06 Baker Hughes Incorporated Recessed extended nozzles for drill bits and drill bits so equipped
RU2505659C1 (ru) * 2012-09-28 2014-01-27 Николай Митрофанович Панин Промывочный узел бурового долота (варианты)
RU2507364C1 (ru) * 2012-10-10 2014-02-20 Николай Митрофанович Панин Промывочный узел бурового долота (варианты)
RU2507365C1 (ru) * 2012-10-24 2014-02-20 Николай Митрофанович Панин Промывочный узел бурового долота

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949049A (en) * 1929-10-29 1934-02-27 Jesse C Wright Rotary drilling bit
US1995389A (en) * 1933-10-23 1935-03-26 Globe Oil Tools Co Disk bit
US2034073A (en) * 1934-04-02 1936-03-17 Globe Oil Tools Co Well bit
US2089466A (en) * 1935-12-24 1937-08-10 Globe Oil Tools Co Well bit
US2151545A (en) * 1938-07-11 1939-03-21 John A Zublin Composite bit
US2279129A (en) * 1940-01-16 1942-04-07 Reed Roller Bit Co Drill bit
US2408892A (en) * 1944-07-18 1946-10-08 Reed Roller Bit Co Slush tube
US2440452A (en) * 1944-03-02 1948-04-27 Oilfields Service Co Quick action coupling
US2589888A (en) * 1948-02-25 1952-03-18 Walter J Stampfl Flow control device
US2755598A (en) * 1954-04-06 1956-07-24 William N Van Denburgh Rotary blast nozzle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2531749A (en) * 1948-01-06 1950-11-28 Reed Roller Bit Co Quick-change slush nozzle

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1949049A (en) * 1929-10-29 1934-02-27 Jesse C Wright Rotary drilling bit
US1995389A (en) * 1933-10-23 1935-03-26 Globe Oil Tools Co Disk bit
US2034073A (en) * 1934-04-02 1936-03-17 Globe Oil Tools Co Well bit
US2089466A (en) * 1935-12-24 1937-08-10 Globe Oil Tools Co Well bit
US2151545A (en) * 1938-07-11 1939-03-21 John A Zublin Composite bit
US2279129A (en) * 1940-01-16 1942-04-07 Reed Roller Bit Co Drill bit
US2440452A (en) * 1944-03-02 1948-04-27 Oilfields Service Co Quick action coupling
US2408892A (en) * 1944-07-18 1946-10-08 Reed Roller Bit Co Slush tube
US2589888A (en) * 1948-02-25 1952-03-18 Walter J Stampfl Flow control device
US2755598A (en) * 1954-04-06 1956-07-24 William N Van Denburgh Rotary blast nozzle

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115200A (en) * 1957-08-28 1963-12-24 Reed Roller Bit Co Drill bit nozzle assembly
US3120284A (en) * 1959-08-17 1964-02-04 Globe Oil Tools Co Jet nozzle for drill bit
US2987262A (en) * 1959-11-24 1961-06-06 Lodding Engineering Corp Removable and replaceable shower device
US3084751A (en) * 1960-04-29 1963-04-09 Dresser Ind Drill bit nozzle
DE1124897B (de) * 1960-05-31 1962-03-08 Smith Tool Co Eine Nach Den Ge Rollenmeissel mit im Spuelkanal einsetzbarer Duese
US3111179A (en) * 1960-07-26 1963-11-19 A And B Metal Mfg Company Inc Jet nozzle
US3096834A (en) * 1960-08-26 1963-07-09 Chicago Pneumatic Tool Co Jetting device for rock bit
DE1178806B (de) * 1961-05-22 1964-10-01 Hughes Tool Co Rollenmeissel fuer ein mit gasartiger Spuelung arbeitendes Bohrverfahren
US3070182A (en) * 1961-09-21 1962-12-25 John F Runte Self-cleaning fluid circulating drill bit
US3156026A (en) * 1961-12-04 1964-11-10 Ben F Kelley Co Inc Slip bowl
US3112803A (en) * 1962-01-02 1963-12-03 Jersey Prod Res Co Diamond drill bit
US3120348A (en) * 1962-09-27 1964-02-04 Valve Corp Of America Plastic sprayer construction for aerosol devices
US3685601A (en) * 1971-03-01 1972-08-22 Murphy Ind Inc G W Drill bit
US4378853A (en) * 1981-08-31 1983-04-05 Smith International, Inc. Cavitation nozzle plate adapter for rock bits
US4533005A (en) * 1983-11-21 1985-08-06 Strata Bit Corporation Adjustable nozzle
US4739845A (en) * 1987-02-03 1988-04-26 Strata Bit Corporation Nozzle for rotary bit
US5601153A (en) * 1995-05-23 1997-02-11 Smith International, Inc. Rock bit nozzle diffuser
US6216959B1 (en) 1997-10-17 2001-04-17 Fluid-Quip, Inc. Nozzle for centrifuge rotors and method of removing same
US6511005B2 (en) 2001-03-30 2003-01-28 Fluid-Quip, Inc. Bowl centrifuge nozzle
US20050121235A1 (en) * 2003-12-05 2005-06-09 Smith International, Inc. Dual property hydraulic configuration
US7213661B2 (en) * 2003-12-05 2007-05-08 Smith International, Inc. Dual property hydraulic configuration
WO2008027481A1 (en) * 2006-08-31 2008-03-06 Baker Hughes Incorporated Recessed extended nozzles for drill bits and drill bits so equipped
US20080053708A1 (en) * 2006-08-31 2008-03-06 Baker Hughes Incorporated Recessed extended nozzles for drill bits and drill bits so equipped
RU2505659C1 (ru) * 2012-09-28 2014-01-27 Николай Митрофанович Панин Промывочный узел бурового долота (варианты)
RU2507364C1 (ru) * 2012-10-10 2014-02-20 Николай Митрофанович Панин Промывочный узел бурового долота (варианты)
RU2507365C1 (ru) * 2012-10-24 2014-02-20 Николай Митрофанович Панин Промывочный узел бурового долота

Also Published As

Publication number Publication date
DE1022173B (de) 1958-01-09
CH327606A (de) 1958-02-15

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