WO2013100814A1 - Полимерное устройство для защиты соединительной трубной муфты - Google Patents
Полимерное устройство для защиты соединительной трубной муфты Download PDFInfo
- Publication number
- WO2013100814A1 WO2013100814A1 PCT/RU2012/001079 RU2012001079W WO2013100814A1 WO 2013100814 A1 WO2013100814 A1 WO 2013100814A1 RU 2012001079 W RU2012001079 W RU 2012001079W WO 2013100814 A1 WO2013100814 A1 WO 2013100814A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sleeve
- diameter
- bushings
- small
- pipes
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/182—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for screw-threaded joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
- F16L15/04—Screw-threaded joints; Forms of screw-threads for such joints with additional sealings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L17/00—Joints with packing adapted to sealing by fluid pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/10—Coatings characterised by the materials used by rubber or plastics
Definitions
- the invention relates to products from compositions of polymers of unsaturated aliphatic hydrocarbons containing one carbon-carbon double bond used in equipment for the development and operation of hydrocarbon deposits, in particular to technology and techniques for raising well products, performing technological work in the well, as well as transporting products wells and other liquids and gas. It can be used in the oil and gas industry and in other branches of engineering when pumping aggressive liquids and gas under high pressure.
- a device for protecting smooth pipe joints, as well as for protecting joints of pipe flange joints from the inside against the effects of aggressive substances contained therein. It includes a sleeve (one or more) that are installed inside the pipe and equipped with sealing devices that interact with the end surfaces of the inner protective coating or the inner lining of the pipe. The installation of the sleeve allows you to dock individual sections of pipes avoiding the effects of the pumped medium on the inner surface and thus prevent its corrosion (US 3235291, 02.15.1966).
- the disadvantage of this device is the narrowing of the cross section of the pipeline, the difficulty of reassembling and disassembling the joint and the need for replacing the o-rings.
- a safety device for protecting the internal tapered thread of oil pipe assortment couplings (RU 2135882, 08.27.1999) in the form of a safety conical sleeve made of an expandable polymer, for example, polystyrene.
- the sleeve is made with an outer diameter larger than the inner diameter of the thread being protected by an amount that allows elastic compression of the sleeve material.
- a device known from the prior art that provides insulation of the inner surface of a threaded sleeve for connecting two pipes, including a stepped sleeve having a middle section with an increased diameter and two side ones with smaller outer diameters, installed between the ends of the pipes with a conical threaded and connected by a sleeve and equipped with o-rings made of elastomer located in sections of the sleeve of small diameter (US 5470111, 11.28.1995).
- the disadvantage of this device is to reduce the bore of the pipeline in the area of the coupling and the unreliable operation of the sealing rings installed in the area of small diameter and interacting with the sealing surfaces in three planes.
- This device does not provide compensation for wear of the tapered threads of the coupling joint when they are often screwed up - unscrewed, which is typical for the operation of tubing strings in oil and gas wells. This is accompanied by a violation of the tightness and penetration of aggressive fluid into the gap.
- the installation of such devices requires an individual adjustment of their axial dimensions for each particular connection.
- the claimed invention solves the problem aimed at providing insulation of the inner surface of the coupling and ends of the screwed pipes, eliminating the ingress of the pumped liquid into the threaded conical connection at different stages of its operation in the presence of mechanical wear of the threads due to its screwing and unscrewing during the operation of the well, as well allows to achieve improved hydraulic characteristics by reducing hydraulic resistance and eliminating flow turbulization the fluid in the pipe joint area.
- the technical result obtained by using the invention is to increase the durability of the threaded sleeve joint during the entire period of its operation due to the exclusion of coupling corrosion, its threads and associated pipe threads, as well as reducing energy losses in transporting products.
- the polymer device for protecting the connecting pipe coupling contains a stepped sleeve having a middle section with an increased diameter and two lateral ones with smaller external diameters, installed between the ends of the pipes with a tapered thread and connected by a coupling and provided with elastomer o-rings located in sections of the sleeve of small diameter, characterized in that the device is equipped with an additional step sleeve, and the first step sleeve has constant the outer diameter and two sections with small and large inner diameters, and the second step sleeve has a constant inner diameter and two sections with small and large diameters, the small inner diameter of the first sleeve and the inner diameter of the second sleeve being equal to the inner diameter of the pipes being connected, and the outer diameter the first sleeve and the larger outer diameter of the second sleeve are equal to the inner diameter of the coupling "in the light", while the first sleeve in the area of large internal diameter is connected
- the polymer is characterized by the fact that the surfaces along which the interaction of the first and second bushings can have spiral annular protrusions and hollows of a semicircular profile, ensuring their tight contact and preventing them from disconnecting when disassembling the threaded connection,
- the interaction surfaces of the first and second bushings can be made smooth along the entire length
- one of the bushings can be made of a material having a lower modulus of elasticity than the first,
- one of the bushings can be made of high pressure polyethylene, and the other of low pressure polyethylene, one of the bushings can be made of kapron, and the other of polyethylene.
- the drawing shows a structural diagram of the device.
- the invention is as follows:
- the pipe coupling 1 is used to connect two pipes 2 and 3 (for example, tubing) having tapered threads at the ends.
- the inner surface of the pipes 2 and 3 may have a protective coating, which ensures their isolation from exposure to aggressive environments.
- the inner coating of pipes may be:
- the first stepped sleeve 4 has a constant outer diameter D H, and two sections with a small di and large cfe inner diameter and a second stepped sleeve 5 has a constant inner diameter a and two areas with small di "and large D H diameters, and a small inner diameter of the first the bushings di and the inner diameter d of the second sleeve are equal to the inner diameter of the connected pipes d BH , and the outer diameter of the first sleeve D H and the larger outer diameter D H of the second sleeve are equal to the inner diameter of the coupling “in the light”, while the first sleeve a large inner diameter is connected to the plot of the small outer diameter of the second sleeve with an interference fit, and the magnitude of the possible movement of the bushings relative to each other L exceeds the movement of the ends of the pipes when tightening the threaded connection at the maximum allowable wear of the threads.
- the surfaces 6 and 7, on which the interaction of the first 4 and second 5 bushings have spiral annular protrusions and depressions, for example a semicircular profile, ensuring their tight contact and preventing them from disconnecting when disassembling the threaded connection, i.e. when unscrewing one of the pipes 2 (3) from the coupling 1.
- An embodiment of the design is the implementation of bushings 4 and 5 with smooth surfaces, b and 7 on which they interact with each other smooth along the entire length.
- the dimensions of the contacting surfaces are performed in such a way that there would be an interference fit.
- one of the bushings can be made of a material having a lower modulus of elasticity than the first.
- the device operates as follows:
- one of the pipes for example, the right 2
- the coupling 1 Before assembling the coupling connection, one of the pipes, for example, the right 2, is screwed onto the coupling 1 and tightened with a torque to ensure the tightness of the connection.
- preassembled sleeves 4 and 5 are installed in the inner cavity of the coupling 1.
- the right sleeve 5 is inserted into the hole of the left sleeve 4 to a depth of about 5 - 10 mm (depending on the diameter of the sleeves) so that they form a single assembly.
- the thread is pre-lubricated with grease or sealant, depending on the operating conditions of the threaded connection.
- the screwing of tapered threads consists of two stages - the actual screwing and subsequent tightening of the threaded connection.
- the end of the pipe 3 abuts against the end of the sleeve 5 and moves it relative to the sleeve 4.
- the surfaces of the sleeves 5 and 6 slide relative to each other, the annular protrusions of one sleeve interact with the troughs of the other sleeve, creating a tight tight connection.
- the surfaces of the bushings 6 and 7 are made smooth, then the tightness of the gap is also ensured by interference.
- the gap value L assumes a specific value for the wear of the tapered threads. For new, unworn threads, this value will be Lmax- Thus, the axial dimensions of the bushings are not adjusted due to the self-installation of the bushings relative to each other.
- the bushings can be removed from the cavity of the coupling with a tool gripping the bushings for the inner diameter. Separation of bushings apart from each other is carried out after they are removed from the coupling by rotation relative to each other.
- the pipe 3 will be screwed deeper and deeper into the sleeve, and the sleeve 5 will be embedded deeper into the hole of the sleeve 4.
- the tightness at the end of the pipe 3 will be constant or at least no less than in the initial period and will ensure the tightness of the connection.
- the proposed device will provide isolation of the inner surface of the coupling and thread from liquid or gas located in the inner cavity of the pipes.
- the claimed technical result is realized, which consists in increasing the durability of the threaded sleeve joint during the entire period of its operation by eliminating corrosion of the sleeve, its thread and the associated pipe threads.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Joints With Sleeves (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1413304.5A GB2513269B (en) | 2011-12-27 | 2012-12-18 | Polymeric Device For Protecting A Pipe Coupling |
CA2861461A CA2861461C (en) | 2011-12-27 | 2012-12-18 | Polymeric device to protect pipe coupling |
US14/312,780 US9835283B2 (en) | 2011-12-27 | 2014-06-24 | Polymeric device to protect pipe coupling |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2011153496 | 2011-12-27 | ||
RU2011153496/06A RU2478865C1 (ru) | 2011-12-27 | 2011-12-27 | Устройство для защиты соединительной трубной муфты |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/312,780 Continuation US9835283B2 (en) | 2011-12-27 | 2014-06-24 | Polymeric device to protect pipe coupling |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013100814A1 true WO2013100814A1 (ru) | 2013-07-04 |
Family
ID=48698101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU2012/001079 WO2013100814A1 (ru) | 2011-12-27 | 2012-12-18 | Полимерное устройство для защиты соединительной трубной муфты |
Country Status (6)
Country | Link |
---|---|
US (1) | US9835283B2 (ru) |
CA (1) | CA2861461C (ru) |
EA (1) | EA022086B1 (ru) |
GB (1) | GB2513269B (ru) |
RU (1) | RU2478865C1 (ru) |
WO (1) | WO2013100814A1 (ru) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITVI20130050A1 (it) * | 2013-02-28 | 2014-08-29 | Mpr S R L | Distanziale di rivestimento perfezionato per la protezione della superficie interna di un elemento di giunzione, preferibilmente di un manicotto, utilizzato per raccordare le estremità affacciate di due tubi |
RU170931U1 (ru) * | 2016-12-12 | 2017-05-15 | Общество с ограниченной ответственностью "Форма С" | Защитная втулка |
RU176211U1 (ru) * | 2017-04-03 | 2018-01-12 | Общество с ограниченной ответственностью "ТЕХНОМАШ" | Межниппельная предохранительная вставка |
RU209321U1 (ru) * | 2017-05-04 | 2022-03-15 | Александр Александрович Гуреев | Вставка предохранительная межниппельная для защиты соединений насосно-компрессорных труб от коррозионных процессов при добыче нефти |
RU2666384C1 (ru) * | 2017-07-14 | 2018-09-07 | Амельченко Леонид Владимирович | Межниппельная вставка НКТ унифицированная |
RU182696U1 (ru) * | 2017-12-18 | 2018-08-28 | Открытое акционерное общество "Сургутнефтегаз" | Межниппельная вставка полимерная (МНВП) для защиты внутренней поверхности элемента для соединения труб |
RU180851U1 (ru) * | 2018-03-12 | 2018-06-28 | Общество с ограниченной ответственностью "Ижнефтепласт" | Предохранительная вставка для защиты соединительной трубной муфты |
RU2696611C1 (ru) * | 2018-07-30 | 2019-08-05 | Общество с ограниченной ответственностью "Газпром трансгаз Ухта" | Способ увеличения механической прочности полиэтиленовых муфт |
RU188225U1 (ru) * | 2018-11-29 | 2019-04-03 | Общество с ограниченной ответственностью "НТС-Лидер" | Защитный элемент межниппельного пространства |
RU210114U1 (ru) * | 2021-07-27 | 2022-03-29 | Александр Александрович Гуреев | Втулка защитная межниппельная |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5470111A (en) * | 1994-08-12 | 1995-11-28 | Tuboscope Vetco International, Inc. | Plastic coating thread and coupling assembly |
RU2135882C1 (ru) * | 1995-12-14 | 1999-08-27 | Зырянов Борис Константинович | Способ изготовления предохранительных деталей для защиты внутренней конической резьбы |
RU2389943C1 (ru) * | 2008-09-23 | 2010-05-20 | Вячеслав Георгиевич Кухтин | Теплоизолированный стык предварительно теплоизолированных труб с полимерной оболочкой, способ его монтажа, полимерная муфта и способ ее изготовления |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2233734A (en) * | 1939-06-01 | 1941-03-04 | Nat Tube Co | Pipe joint |
US3235291A (en) * | 1963-04-29 | 1966-02-15 | Phillips Petroleum Co | Coupling for a thermoplastic liner in a metal conduit |
US3253841A (en) * | 1963-12-05 | 1966-05-31 | Avisun Corp | Lined conduit joint |
US3298716A (en) * | 1964-08-31 | 1967-01-17 | Taylor Tube Seal Inc | Lined pipe and pipe joints and method of lining pipe and joining lined pipe |
US3472533A (en) * | 1968-07-03 | 1969-10-14 | John W Turner | Coupling seal for lined tubular arrangement |
US3479059A (en) * | 1968-07-19 | 1969-11-18 | William B Taylor | Lined pipe sections and joints |
GB1277113A (en) * | 1969-07-16 | 1972-06-07 | Dunlop Holdings Ltd | Assemblies of tubular members |
US4366971A (en) * | 1980-09-17 | 1983-01-04 | Allegheny Ludlum Steel Corporation | Corrosion resistant tube assembly |
DE3365298D1 (en) * | 1982-09-02 | 1986-09-18 | Rockenfeller Kg | Wood-screw |
DE3565169D1 (en) * | 1984-02-20 | 1988-10-27 | Fischer Ag Georg | Flange connection for fibre-reinforced plastic pipe sections |
US4679831A (en) * | 1986-06-13 | 1987-07-14 | Kielminski William P | Pipe coupling connection sealing apparatus |
DE4008964A1 (de) * | 1990-03-20 | 1991-09-26 | Bernd Buedenbender | Behaelter mit mindestens einem einer fuelloeffnung zugeordneten, verschliessbaren rohrstutzen |
US6863313B1 (en) * | 1998-02-25 | 2005-03-08 | Grant Prideco, L.P. | Threaded connection for internally clad pipe |
RU2178859C2 (ru) * | 2000-12-08 | 2002-01-27 | Закрытое акционерное общество МосФлоулайн | Теплоизолированный стык предварительно теплоизолированных трубопроводов, способ его выполнения и способ ремонта трубопроводов |
US8091930B2 (en) * | 2009-03-20 | 2012-01-10 | Lee M Robichaux | Tubular connection floating shoulder ring |
US8857860B2 (en) * | 2011-03-29 | 2014-10-14 | Composite Lining Systems, LP | Coupling assembly with corrosion barrier for GRE-lined premium threaded pipe |
-
2011
- 2011-12-27 RU RU2011153496/06A patent/RU2478865C1/ru active IP Right Revival
-
2012
- 2012-12-17 EA EA201201560A patent/EA022086B1/ru not_active IP Right Cessation
- 2012-12-18 CA CA2861461A patent/CA2861461C/en active Active
- 2012-12-18 GB GB1413304.5A patent/GB2513269B/en active Active
- 2012-12-18 WO PCT/RU2012/001079 patent/WO2013100814A1/ru active Application Filing
-
2014
- 2014-06-24 US US14/312,780 patent/US9835283B2/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5470111A (en) * | 1994-08-12 | 1995-11-28 | Tuboscope Vetco International, Inc. | Plastic coating thread and coupling assembly |
RU2135882C1 (ru) * | 1995-12-14 | 1999-08-27 | Зырянов Борис Константинович | Способ изготовления предохранительных деталей для защиты внутренней конической резьбы |
RU2389943C1 (ru) * | 2008-09-23 | 2010-05-20 | Вячеслав Георгиевич Кухтин | Теплоизолированный стык предварительно теплоизолированных труб с полимерной оболочкой, способ его монтажа, полимерная муфта и способ ее изготовления |
Also Published As
Publication number | Publication date |
---|---|
CA2861461C (en) | 2018-07-17 |
US20140300098A1 (en) | 2014-10-09 |
RU2478865C1 (ru) | 2013-04-10 |
GB2513269B (en) | 2017-01-18 |
GB201413304D0 (en) | 2014-09-10 |
US9835283B2 (en) | 2017-12-05 |
EA022086B1 (ru) | 2015-10-30 |
GB2513269A (en) | 2014-10-22 |
CA2861461A1 (en) | 2013-07-04 |
EA201201560A1 (ru) | 2013-06-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
RU2478865C1 (ru) | Устройство для защиты соединительной трубной муфты | |
CA2061217C (en) | Lined pipe joint and seal | |
RU2449199C2 (ru) | Резьбовое соединение с самоуплотняющимся уплотнением | |
EP2372208B1 (en) | Threaded joint with elastomeric seal flange | |
RU2451853C2 (ru) | Резьбовое соединение с эластичным уплотнительным кольцом | |
AU2003265463B2 (en) | Threaded pipe joint | |
RU2472916C2 (ru) | Резьбовое соединение с усовершенствованными эластичными уплотнительными кольцами | |
US8840152B2 (en) | Thin-walled pipe joint | |
CA2691104C (en) | A method and apparatus for inhibiting corrosion in strings of tubulars | |
US8857860B2 (en) | Coupling assembly with corrosion barrier for GRE-lined premium threaded pipe | |
CS8905547A2 (en) | Hermetic joint of metallic tubes | |
WO2014014391A2 (en) | Sealed threaded joint for tubing pipes | |
US8408605B2 (en) | Hammer union lock and related methods | |
US11255470B2 (en) | Heavy duty wing nut | |
RU2264523C1 (ru) | Соединение насосно-компрессорных или обсадных труб в нефтяных или газовых скважинах | |
RU180851U1 (ru) | Предохранительная вставка для защиты соединительной трубной муфты | |
CA2815320C (en) | Threaded connections and methods | |
RU2651856C1 (ru) | Соединение насосно-компрессорных труб | |
EA028543B1 (ru) | Перекрывающая вставка для защиты внутренней поверхности элемента для соединения труб | |
RU209321U1 (ru) | Вставка предохранительная межниппельная для защиты соединений насосно-компрессорных труб от коррозионных процессов при добыче нефти | |
US20190032821A1 (en) | Pipe coupling | |
CA2706286C (en) | A high-tightness threaded joint | |
GB2586308A (en) | Pipe coupling | |
Vasylyshyn | Ways to increase the strength of pipes of oil assortment | |
UA114240C2 (uk) | Трубне різьбове з'єднання |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 12861537 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2861461 Country of ref document: CA |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 1413304 Country of ref document: GB Kind code of ref document: A Free format text: PCT FILING DATE = 20121218 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1413304.5 Country of ref document: GB |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 12861537 Country of ref document: EP Kind code of ref document: A1 |