WO1999060245A1 - Cleaning and lubricating device for threads, especially for drill pipes - Google Patents
Cleaning and lubricating device for threads, especially for drill pipes Download PDFInfo
- Publication number
- WO1999060245A1 WO1999060245A1 PCT/NO1999/000139 NO9900139W WO9960245A1 WO 1999060245 A1 WO1999060245 A1 WO 1999060245A1 NO 9900139 W NO9900139 W NO 9900139W WO 9960245 A1 WO9960245 A1 WO 9960245A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cleaning
- pipe
- lubricating device
- nozzle
- threads
- Prior art date
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 60
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 37
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 abstract description 11
- 238000005406 washing Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000005461 lubrication Methods 0.000 description 7
- 238000005507 spraying Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000012459 cleaning agent Substances 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- IHPYMWDTONKSCO-UHFFFAOYSA-N 2,2'-piperazine-1,4-diylbisethanesulfonic acid Chemical compound OS(=O)(=O)CCN1CCN(CCS(O)(=O)=O)CC1 IHPYMWDTONKSCO-UHFFFAOYSA-N 0.000 description 1
- 239000007990 PIPES buffer Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/006—Accessories for drilling pipes, e.g. cleaners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/021—Cleaning pipe ends or pipe fittings, e.g. before soldering
Definitions
- the present invention relates to a cleaning and lubricating device for threads, especially for cleaning a threaded por- tion of tap and socket ends on drill pipes and casings, and wherein water or other cleaning liquid can be used as cleaning agent, and wherein thread fat is used as lubricating agent .
- Norwegian patent specification No. 179,920 shows a device having driven rotary nozzles.
- the rotative property, the mounting and support as well as the need for motive force of these known nozzles complicate this known device and make it more expensive.
- This device is exclusively built up for the purpose of applying thread fat .
- U.S. patent specification No. 5,653,819 deals with a device for cleaning threads of drill pipes.
- the device comprises circumferentially distributed nozzles spraying fluids toward the threads.
- a plurality of nozzles are used, placed along an annular path, and this annular row of nozzles is capable of cleaning both external threads (on the tap end) and internal threads (within the socket end) .
- the total spraying capacity of the nozzles is relatively difficult to change and adjust.
- This patent specification is exclusively occupied with cleaning of threads, and the known device is not adapted for the application of thread fat.
- the nozzle apertures should point radially inwardly and, for a corresponding treatment of internal threads within a socket end, the nozzle apertures should point radially outwardly.
- the cleaning and lubricating device in accordance with the invention is a constructively and functionally sim- pier accessory, facilitating and simplifying the individual working operations as well as securing that they become carried out with optimum efficiency, simultaneously as favourable conditions have been offered in order to exclude stoppage during use .
- the cleaning and lubricating device has two, preferably parallel, annular, preferably circu- lar nozzle apertures .
- the cleaning or lubrication, respectively, of the threads takes place in that a relative, rectilinear, centrally controlled displacement movement is established between the device's nozzle head with the two annular nozzle apertures and the threaded drill pipe end portion to be cleaned and lubricated, in the course of which the apertures of the nozzle head effects an optimum unitary treatment, 360° in the cir- cumferential direction, first with the nozzle aperture for the cleaning agent under high pressure in an open condition, while the other nozzle aperture is closed and, thereupon, with the nozzle aperture for the thread fat under pressure in an open condition, while the water-spraying nozzle aperture is closed.
- the two thread treating operations, cleaning and application of fat are carried out by means of one and the same, simple tool or accessory, immediately following each other; this being advantageous because the thread fat, thus, is applied on recently cleaned threads.
- the device of the invention exhibits simple adjusting possibilities in order to adjust the degree of feeding out of the cleaning liquid or of the thread fat, respectively.
- the threads on the pipe ends are cleaned and lubricated before the pipe is run down into the bore hole, i.e. that extra time lapse when drill pipes are to be run down into the bore hole. Additionally, this cleaning and lubricating work often is carried out by means of high pressure washing apparatus, whereupon thread fat is applied manually.
- thread fat is applied manually.
- the drill pipes are ready to be treated upon leaving the bore hole and to be displaced by means of a pipe handling apparatus. Then, time is available to position the drill pipe with respect to the device of the invention, cleaning the threads thereof and lubricating them with thread fat, before the pipe handling apparatus displaces the pipe further to said finger board.
- this cleaning and lubricating operation carried out by the present device does not delay the sequence pulling the drill string out from the bore hole.
- Figure 1 is an axial section through a nozzle head of the invention, equipped with supply and discharge device for two fluids, cleaning liquid and thread fat, and where both discharge openings are closed;
- Figure 2 is an axial section corresponding to figure 1, wherein one annular, radially inwardly directed discharge opening is open, while the other discharge opening which is identical in shape, design and orientation, is closed;
- Figure 3 shows the nozzle head in perspective view, disposed on a vertical support column and connected with supply hoses for fluid, and wherein an externally threaded pipe tap end is inserted into a circumferential ring formed by the main body of the nozzle head;
- Figure 4 shows the nozzle head, etc., in figure 3 in perspective as seen from the opposite side; two further pipes having externally threaded tap ends are awaiting treatment of their threads ;
- Figure 5 shows in side elevational view/vertical section a nozzle head in accordance with the invention in connection with a centring means adapted to centre a pipe tap end having external threads in relation to the annular nozzle body, and wherein an upwardly conically tapering centring head is sup- ported by the upper end of a telescopic pipe device;
- Figure 6 shows the conical centring head in centring engagement in the bore of the pipe tap end
- Figure 7 shows a further telescopic pipe carrying the nozzle head and an upwardly open housing surrounding the latter, in a continued condition, the nozzle being placed concentrically around the suspended, externally threaded pipe tap end;
- Figure 8 shows a nozzle head wherein fluid discharge openings are directed radially outwardly, for washing and, thereupon, lubrication of internal threads in an upwardly directed pipe socket end;
- Figures 9 - 12 show perspective views of a pipe handle apparatus to be used in the thread cleaning and lubrication, and illustrate four operational steps following one after the other, wherein
- Figure 9 shows the pipe handling apparatus immediately after it has caught a pipe section screwed loose from a pipe string, the pipe section being ready to be swung around the vertical axis of the handling apparatus;
- Figure 10 shows said pipe section swung into position and lowered down within a cleaning and lubrication device for the tap end of the pipe section, a corresponding device for cleaning and lubricating the socket end of the pipe section being situated coaxially with the first-mentioned, underlying device, placed at the top of the pipe handling apparatus at a vertical distance from the underlying device which insignifi- cantly exceeds the length of the pipe section;
- Figure 11 shows the pipe section raised with its upper socket end in cleaning/lubricating engagement with the upper device
- Figure 12 shows a situation where the pipe section's end cou- pling threads are cleaned and lubricated, and where the pipe handling apparatus is swung into position away from the devices uppermost and lowermost, in order to suspend the pipe section in a finger board, from which two pipe sections already have been suspended, and which only has been shown in perspective partial view.
- figures 1 and 2 which, in an axial section, show how a cleaning and lubricating device has been built up constructively according to the invention.
- the substantially annular body 10 of the nozzle head is in- ternally formed with two parallel 360° circumferential grooves 14 and 14', symmetrically placed in respect of a central, radially inwardly directed, annular portion 12, said grooves 14 and 14', moreover, each being defined by an axi- ally displaceable nozzle ring 16 and 16', so that each of the internal circumferential grooves 14 and 14' exhibits a trapezoidal cross-section, the longest of the parallel sides being positioned at the central, radially inwardly directed annular portion 12.
- To each of these internal circumferential grooves 14, 14' passes a gate 18 and a gate 18', respectively, for the supply of cleaning liquid under pressure and thread fat under pressure, respectively.
- small screw springs 20 are disposed, said springs with the outer end thereof resting against the end face of a nut 22, 22' assigned to each of the nozzle rings 16, 16".
- Each nut 22, 22' is formed with a notch 24 or similar catching means for a tool (not shown) for screwing the nut in question 22 or 22', respectively, in or out, so that one through turning the nut 22 or 22', respectively, can adjust the width of the discharge opening slot 26, 26' upon the application of cleaning liquid or thread fat, respectively.
- the nozzle head body's wall is formed with radially directed, internal bores 28, 28' for set screws (not shown) which are tightened in order to lock a set nut 22 or 22', respectively.
- set screws not shown
- the respective set screw must be somewhat unscrewed before the nut 22, 22' belonging thereto is set for adjusting the discharge slot opening.
- the nozzle head's annular body 10 is mounted on top of a vertical support column 30.
- the reference numerals 32 and 32' denote fluid supply pipelines/hoses coupled to the gates 18 and 18', respectively.
- the nozzle head 10 is passed along the threaded portion 38 during the application of cleaning liquid through the discharge opening 26, whereupon the nozzle head 10 is re- turned across the threaded portion 38 during application of thread fat through the discharge opening 26' .
- the springs 20 will urge the nozzle ring 16 and 16', respectively, against the annular s portion 12 and, thus, close the discharge opening in question.
- Figure 4 shows the device of figure 3 and illustrates additionally two further drill pipes 34' and 34" to be treated.
- a relative displacement possibility between the nozzle o head 10 and respective drill pipes 34, 34', 34" must be provided.
- the main body 10 of the nozzle head is supported at the top of a bracket 40 disposed on the bottom of an upwardly open, case-shaped housing 42 centrically supported by 5 a vertical telescopic pipe 44, surrounding a vertically displaceable piston rod 46 incorporated in a centring mechanism between the nozzle head and the externally threaded pipe tap end 38 and which, to this end, carries an upwardly conically tapering centring head 48.
- the drill pipe 34 is then sus- o pended with its downwardly conically tapering pipe tap end 38 above the nozzle head 10 in the initial position thereof, figure 5.
- the drill pipe 34 is positioned by means of a pipe handling apparatus, not shown.
- the centring head 48 is brought into centring engagement in the pipe tap end upon upwardly di- rected displacement of the piston rod 46.
- the common axis of the centred externally thread pipe tap and the nozzle head 10 is designated at 50.
- a nozzle head embodiment is shown, where the discharge slot openings are directed radially outwardly in order to enable high-pressure-rinsing and subsequent lubrication of pipe threads with thread fat under pressure at internal threads within pipe sockets 52.
- a centring head 54 having a forward, downwardly conically tapering guiding portion 54' having a common longitudinal axis 56 with the nozzle head 10 has been inserted into the pipe bore of a drill pipe 34, the end socket 52 thereof pointing upwardly, in order to centre it in relation to the nozzle head 10.
- the centring head 54,54' is carried on the end of a vertically suspended piston rod 58 extendable and withdrawable in a cylinder 60 carrying a pipe 62 coaxially therewith and formed with two channels 64 and 64' each connected to a gate 66 and 66' for the supply of cleaning liquid and thread fat, respectively, and each lead- ing to an annulus 68 and 68', respectively, (corresponding to 14 and 14' in figures 1 and 2) each assigned to a 360° encircling, closeable, openable discharge slot opening 70, 70' adjustable in respect of slot width.
- Nozzle rings 16, 16', springs 20, nuts 22, 22' and central, radially inwardly directed, annular wall portion 12 are substantially as in previous embodiments, and equal and similar parts and members are each denoted at the same reference numeral and indications as before.
- figures 9 - 12 show a pipe handling apparatus with which the cleaning and lubricating device according to the invention appropriately may be used.
- the pipe handling apparatus generally denoted at reference numeral 72, comprises a vertical column-like support body 74 having a lower foot plate 76 resting on the bore deck 78, where the mousehole is indicated at 80.
- the mousehole 80 Up from the mousehole 80 projects an upper, socket-shaped end portion 34 of a pipe string (not visible) suspended from above and from which an overlying pipe section 34' has been unscrewed, hanging on pivotable arms 82, 82' through catchers 84, 84', the inner ends of the arms 82, 82' being disposed on slide pieces 86, 86' on the column-like support body 74 of the apparatus 72.
- Such pipe handling apparatus 72 are known per se in general designs based on turnability about a vertical axis (the axis of the column 74) as well as raisability/lowerability .
- a so-called finger board 88 has been disposed, the board being indicated in partial view only, and from which two pipe sections 34", 34'" have been suspended.
- the cleaning and lubricating device having the nozzle head for the tap end of the pipe section 34' is disposed on the drill floor 78 laterally of the foot plate 76 of the column 74, while the corresponding device having the nozzle head 10 for the socket end of the pipe section 34' is arranged, suspended from the upper end of the column 74.
- the pipe section 34' is turned into position about the vertical axis of the column 74 as well as lowered into the lower device equipped with the nozzle head 10 for cleaning and lubricating the threads on the tap end of the pipe section 34' .
- the upper device with its nozzle head 10 occupies an accurate coaxial position in respect of the lower cleaning and lubricating device so that, as soon as the tap end threads of the pipe section 34' have been cleaned and lubricated, only a rectilinear displacement movement is required for bringing the socket end into engagement with the upper nozzle head 10.
- figure 11 shows the pipe handling apparatus 72 in a position where it is in the process of suspending the pipe section 34', which exhibits cleaned and lubricated end coupling threads, from the finger board 88.
- the lower device with its nozzle head 10 may be raised by means of telescopic tubes 44, and the upper device with its nozzle head 10 may be lowered by means of the cylinder 60.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Cleaning In General (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Nozzles (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EA200001147A EA002429B1 (en) | 1998-05-04 | 1999-04-27 | Cleaning and lubricating device for threads, especially for drill pipes |
EP99919716A EP1076755A1 (en) | 1998-05-04 | 1999-04-27 | Cleaning and lubricating device for threads, especially for drill pipes |
AU37372/99A AU3737299A (en) | 1998-05-04 | 1999-04-27 | Cleaning and lubricating device for threads, especially for drill pipes |
CA002334717A CA2334717A1 (en) | 1998-05-04 | 1999-04-27 | Cleaning and lubricating device for threads, especially for drill pipes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO19981992 | 1998-05-04 | ||
NO981992A NO306791B1 (en) | 1998-05-04 | 1998-05-04 | Cleaning and lubricating device for threads, especially for drill pipes and feeding pipes |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999060245A1 true WO1999060245A1 (en) | 1999-11-25 |
Family
ID=19901992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO1999/000139 WO1999060245A1 (en) | 1998-05-04 | 1999-04-27 | Cleaning and lubricating device for threads, especially for drill pipes |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1076755A1 (en) |
AU (1) | AU3737299A (en) |
CA (1) | CA2334717A1 (en) |
EA (1) | EA002429B1 (en) |
NO (1) | NO306791B1 (en) |
WO (1) | WO1999060245A1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6286627B1 (en) | 1999-08-25 | 2001-09-11 | Lincoln Industrial Corporation | Fluid dispensing apparatus |
WO2002008564A1 (en) * | 2000-07-25 | 2002-01-31 | Weatherford/Lamb, Inc. | Cleaning and doping of tubulars |
WO2001014684A3 (en) * | 1999-08-25 | 2003-04-17 | Lincoln Ind Corp | Method of lubricating and lubricant spraying apparatus |
WO2005093203A1 (en) * | 2004-03-29 | 2005-10-06 | Odfjell Well Services As | Automatic cleaning device |
WO2006065149A1 (en) * | 2004-12-16 | 2006-06-22 | V-Tech As | A pipe joint lubrication device |
WO2011122954A1 (en) * | 2010-03-30 | 2011-10-06 | National Oilwell Varco Norway As | Method and device for treatment of a pipestring section that is positioned in a set-back |
WO2012115523A1 (en) * | 2011-02-23 | 2012-08-30 | Albatross Services As | Cleaning and doping device for drill pipe and drill collar |
EP2672058A2 (en) * | 2012-04-20 | 2013-12-11 | BENTEC GMBH Drilling & Oilfield Systems | Method and device for sealing the ends of drilling rod elements |
WO2017219138A1 (en) * | 2016-06-21 | 2017-12-28 | I3-Edge Ltd. | Method and system for stripping tubulars and the like comprising frustoconical air blade |
NO20180430A1 (en) * | 2018-03-27 | 2019-09-30 | Mhwirth As | Dope unit for pipe handling machine and method for supplying dope |
CN112191568A (en) * | 2020-10-12 | 2021-01-08 | 彭兆华 | Large-scale screw rod cleaning equipment that reliability is high |
CN114390950A (en) * | 2019-09-06 | 2022-04-22 | 坎里格机器人技术有限公司 | Coating device for applying lubricating grease to threads of pipe fittings |
WO2024117913A1 (en) | 2022-12-01 | 2024-06-06 | Mhwirth As | Well pipe handling |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108756732B (en) * | 2018-08-02 | 2023-11-14 | 西南石油大学 | Circumferential impactor based on screw and spring |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2246874A (en) * | 1939-06-27 | 1941-06-24 | Nat Tube Co | Greasing device for threaded articles |
US2642034A (en) * | 1950-11-20 | 1953-06-16 | Standard Oil Dev Co | Tool joint lubricator |
US2760585A (en) * | 1952-11-24 | 1956-08-28 | Frank E Bergeron | Apparatus for applying lubricant to threaded connections |
DE3537633A1 (en) * | 1985-10-23 | 1987-04-30 | Wilfried Dreyfuss | Device for rubbing grease over a thread, in particular of tubular structural parts |
US5157802A (en) * | 1991-10-21 | 1992-10-27 | Guidry Mark L | Pipe thread cleaning apparatus |
US5653819A (en) * | 1992-09-03 | 1997-08-05 | Robert Bee | Method for cleaning threaded portions of tubular members |
-
1998
- 1998-05-04 NO NO981992A patent/NO306791B1/en not_active IP Right Cessation
-
1999
- 1999-04-27 WO PCT/NO1999/000139 patent/WO1999060245A1/en not_active Application Discontinuation
- 1999-04-27 EA EA200001147A patent/EA002429B1/en not_active IP Right Cessation
- 1999-04-27 CA CA002334717A patent/CA2334717A1/en not_active Abandoned
- 1999-04-27 EP EP99919716A patent/EP1076755A1/en not_active Withdrawn
- 1999-04-27 AU AU37372/99A patent/AU3737299A/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2246874A (en) * | 1939-06-27 | 1941-06-24 | Nat Tube Co | Greasing device for threaded articles |
US2642034A (en) * | 1950-11-20 | 1953-06-16 | Standard Oil Dev Co | Tool joint lubricator |
US2760585A (en) * | 1952-11-24 | 1956-08-28 | Frank E Bergeron | Apparatus for applying lubricant to threaded connections |
DE3537633A1 (en) * | 1985-10-23 | 1987-04-30 | Wilfried Dreyfuss | Device for rubbing grease over a thread, in particular of tubular structural parts |
US5157802A (en) * | 1991-10-21 | 1992-10-27 | Guidry Mark L | Pipe thread cleaning apparatus |
US5653819A (en) * | 1992-09-03 | 1997-08-05 | Robert Bee | Method for cleaning threaded portions of tubular members |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001014684A3 (en) * | 1999-08-25 | 2003-04-17 | Lincoln Ind Corp | Method of lubricating and lubricant spraying apparatus |
US6286627B1 (en) | 1999-08-25 | 2001-09-11 | Lincoln Industrial Corporation | Fluid dispensing apparatus |
US6405810B1 (en) | 1999-08-25 | 2002-06-18 | Lincoln Industrial Corporation | Method of lubricating and lubricant spraying apparatus |
US7371289B2 (en) | 2000-07-25 | 2008-05-13 | Weatherford/Lamb, Inc. | Cleaning and doping of tubulars |
WO2002008564A1 (en) * | 2000-07-25 | 2002-01-31 | Weatherford/Lamb, Inc. | Cleaning and doping of tubulars |
WO2005093203A1 (en) * | 2004-03-29 | 2005-10-06 | Odfjell Well Services As | Automatic cleaning device |
WO2006065149A1 (en) * | 2004-12-16 | 2006-06-22 | V-Tech As | A pipe joint lubrication device |
AU2005317313B2 (en) * | 2004-12-16 | 2009-03-26 | Weatherford Rig Systems As | A pipe joint lubrication device |
US8025024B2 (en) | 2004-12-16 | 2011-09-27 | V-Tech As | Pipe joint lubrication device |
US9586322B2 (en) | 2010-03-30 | 2017-03-07 | National Oilwell Varco Norway As | Method and device for treatment of a pipestring section that is positioned in a set-back |
WO2011122954A1 (en) * | 2010-03-30 | 2011-10-06 | National Oilwell Varco Norway As | Method and device for treatment of a pipestring section that is positioned in a set-back |
NO333870B1 (en) * | 2010-03-30 | 2013-10-07 | Nat Oilwell Varco Norway As | Method and apparatus for treating a pipe string section located in an intermediate bearing |
EP2553207A4 (en) * | 2010-03-30 | 2018-01-17 | National Oilwell Varco Norway AS | Method and device for treatment of a pipestring section that is positioned in a set-back |
WO2012115523A1 (en) * | 2011-02-23 | 2012-08-30 | Albatross Services As | Cleaning and doping device for drill pipe and drill collar |
EP2672058A2 (en) * | 2012-04-20 | 2013-12-11 | BENTEC GMBH Drilling & Oilfield Systems | Method and device for sealing the ends of drilling rod elements |
EP2672058A3 (en) * | 2012-04-20 | 2014-04-16 | BENTEC GMBH Drilling & Oilfield Systems | Method and device for sealing the ends of drilling rod elements |
WO2017219138A1 (en) * | 2016-06-21 | 2017-12-28 | I3-Edge Ltd. | Method and system for stripping tubulars and the like comprising frustoconical air blade |
US10890032B2 (en) | 2016-06-21 | 2021-01-12 | 13-Edge, Ltd. | Method and system for stripping tubulars and the like comprising frustoconical air blade |
NO20180430A1 (en) * | 2018-03-27 | 2019-09-30 | Mhwirth As | Dope unit for pipe handling machine and method for supplying dope |
NO344708B1 (en) * | 2018-03-27 | 2020-03-16 | Mhwirth As | Dope unit for pipe handling machine and method for supplying dope |
CN114390950A (en) * | 2019-09-06 | 2022-04-22 | 坎里格机器人技术有限公司 | Coating device for applying lubricating grease to threads of pipe fittings |
US11982140B2 (en) | 2019-09-06 | 2024-05-14 | Canrig Robotic Technologies As | Doping devices for applying dope to pipe threads |
CN112191568A (en) * | 2020-10-12 | 2021-01-08 | 彭兆华 | Large-scale screw rod cleaning equipment that reliability is high |
WO2024117913A1 (en) | 2022-12-01 | 2024-06-06 | Mhwirth As | Well pipe handling |
Also Published As
Publication number | Publication date |
---|---|
EP1076755A1 (en) | 2001-02-21 |
EA002429B1 (en) | 2002-04-25 |
AU3737299A (en) | 1999-12-06 |
NO981992D0 (en) | 1998-05-04 |
EA200001147A1 (en) | 2001-06-25 |
NO981992L (en) | 1999-11-05 |
CA2334717A1 (en) | 1999-11-25 |
NO306791B1 (en) | 1999-12-20 |
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