WO2012128015A1 - 鋼管用ねじ継手 - Google Patents
鋼管用ねじ継手 Download PDFInfo
- Publication number
- WO2012128015A1 WO2012128015A1 PCT/JP2012/055293 JP2012055293W WO2012128015A1 WO 2012128015 A1 WO2012128015 A1 WO 2012128015A1 JP 2012055293 W JP2012055293 W JP 2012055293W WO 2012128015 A1 WO2012128015 A1 WO 2012128015A1
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- WIPO (PCT)
- Prior art keywords
- pin
- seal
- nose
- screw
- shoulder
- Prior art date
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 20
- 239000010959 steel Substances 0.000 title claims abstract description 20
- 230000002093 peripheral effect Effects 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 12
- 238000005452 bending Methods 0.000 abstract description 25
- 238000007789 sealing Methods 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 abstract description 4
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 22
- 230000006835 compression Effects 0.000 description 10
- 238000007906 compression Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000003129 oil well Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000002572 peristaltic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
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- 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
-
- 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
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
-
- 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
- F16L15/004—Screw-threaded joints; Forms of screw-threads for such joints with conical threads with axial sealings having at least one plastically deformable sealing surface
-
- 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
- F16L15/06—Screw-threaded joints; Forms of screw-threads for such joints characterised by the shape of the screw-thread
Definitions
- the present invention relates to a threaded joint for steel pipe, and more particularly, to a tube and casing generally used for exploration and production of oil wells and gas wells. Sealability and compression resistance suitable for use in connecting steel pipes such as OCTG (oil country tubular goods), riser pipes, and line pipes.
- OCTG oil country tubular goods
- riser pipes riser pipes
- line pipes line pipes
- Threaded joints are widely used to connect steel pipes used in oil industry equipment such as oil well pipes.
- API American Petroleum Institute
- standard threaded joints specified in the API have been typically used to connect steel pipes used for searching and producing oil and gas.
- wells for crude oil and natural gas have been deepened, and vertical wells, horizontal wells, gradient wells, etc. have increased. For this reason, the drilling and production environment has become severe.
- compression resistance, bending resistance, external pressure seal performance (External pressure resistance) )) Etc. the required performance for threaded joints is diversifying. Therefore, the use of high-performance special thread joints (premium joints) called premium joints is increasing, and the demand for performance is also increasing.
- Premium joints usually have a tapered thread, a seal part (more specifically, a metal touch seal part (more specifically, a metal to metal seal portion), a shoulder part (more specifically, a torque shoulder part), and more specifically, a torque shoulder part (more specifically, a torque shoulder part).
- a male thread member (externally-threaded member) (hereinafter referred to as “pin”) formed on the pipe end portion and an internally threaded member (hereinafter referred to as “box”) connecting the pins to each other.
- pin internally threaded member
- the seal part plays the role of ensuring the sealing performance by the metal contact of the box and the pin at this part
- the shoulder part is the shoulder surface (bearing surface (bearing) that plays the role of the stopper during the tightening of the joint. face)).
- FIG. 4 is a schematic explanatory view of a premium joint for oil well pipes, and these are longitudinal sectional views of a threaded joint of a circular pipe.
- the threaded joint includes a pin 3 and a box 1 corresponding to the pin 3, and the pin 3 has a male screw portion 7 on the outer surface thereof, and has no screw provided adjacent to the male screw portion 7 on the tip end side of the pin 3.
- It has a nose portion (pin nose 8) which is a length portion.
- the nose portion 8 has a seal portion 11 on its outer peripheral surface and a torque shoulder portion 12 on its end surface.
- the opposing box 1 has a female screw part 5, a seal part 13, and a part that can be screwed or brought into contact with the male screw part 7, the seal part 11, and the shoulder part 12 of the pin 3, respectively. And it has the shoulder part 14.
- Patent Documents 1 to 3 are given as conventional techniques related to the premium joint.
- the metal touch seal portion is at the tip of the pin nose 8.
- a metal touch seal portion is provided near the screw portion of the pin nose 8 to increase the external pressure resistance performance. It has also been proposed to extend the length from the seal part to the shoulder part.
- the pin nose that is not in contact with the box member is configured to be elongated so as to be discontinuous with the seal portion so that the thickness of the pin nose is not reduced.
- the axial compression resistance is also improved.
- an appendix is provided from the seal portion to the pin nose tip, which also has a discontinuous shape with the seal portion to ensure radial rigidity and axial rigidity. It is described that the appendix is deformed at the time of tightening and the tensile resistance is improved by recovering the appendix when it is loaded.
- placing the seal portion near the screw portion of the pin and separating it from the tip of the pin nose is an external pressure resistance and a tension resistance. This is effective in giving stable performance to the screw, and can be confirmed from an FEM simulation (fine element method simulation) or the like.
- the pin nose that is discontinuous with the seal part deforms itself when a strong axial compression force is applied, reducing plastic deformation of the torque shoulder part of the box member. There is also an effect. However, on the other hand, excessive deformation may occur in the discontinuity at the boundary between the screw and the nose, which is considered to depend on the tightening torque.
- Tightening torque is affected by lubrication conditions, surface properties, etc.
- the radial seal contact pressure is made stronger by making the radial component of the seal contact pressure relatively stronger.
- a radial seal method discloses an example of a radial seal method having a large pin seal R shape and a small seal taper angle.
- the problem with the radial seal method in which the seal taper angle is reduced in this way is that a galling is likely to occur during tightening, and in particular, in order to ensure sealing performance and seal stability, When it is necessary to increase the amount of interference, the ease of occurrence of goling is further increased.
- the conventionally proposed threaded joints still have some problems, such as resistance to compression, sealability against external pressure (sealability external pressure), and resistance to bending (resistance to resistance).
- resistance to compression sealability against external pressure
- bending resistance to resistance
- a large bending load acts on the threaded joint in addition to axial tension as shown in FIG.
- relative displacement is generated on the tension side of the bending so that the mating between the male thread 7 and the female thread 5 is weakened on the load flank surface 15 (see FIG. 4).
- the screw falls off when the bending load is further increased.
- the torque shoulder portions 12 and 14 of the pin 3 and the box 1 serve as a support to suppress the movement of the seal portion, but when the bending load further increases, the slipping on the shoulder portions 12 and 14 occurs. It is considered that the sealing performance cannot be maintained.
- the load flank angle of the threaded portion that can maintain sufficient sealing performance against such bending load, the torque shoulder angle of the shoulder portions 12 and 14 adjacent to the seal portion, and the nose shape pointer There was no knowledge to show in the past.
- the load flank angle is an angle formed by the load flank surface 15 with respect to an orthogonal line to the threaded joint axis (angle ⁇ in FIG. 1B), and the orthogonal line is the lower end of the load flank surface (on the pin inner diameter side).
- angle ⁇ in FIG. 1B an orthogonal line to the threaded joint axis
- the orthogonal line is the lower end of the load flank surface (on the pin inner diameter side).
- the torque shoulder angle is the angle (angle ⁇ in FIG. 1C) that the shoulder surface forming the shoulder portions 12 and 14 forms with the orthogonal line to the threaded joint axis.
- angle ⁇ in FIG. 1C
- the lower end of the shoulder surface is located on the front end side of the pin with respect to the orthogonal line. If it is located at, it is negative.
- the present invention is as follows. (1) A male screw part, a pin having a nose part extending from the male screw part to the tube end side, a shoulder part provided at the tip of the nose part, and a female screw part screwed to the male screw part to form a screw part; And a box having an inner peripheral surface of the nose portion opposed to an outer peripheral surface of the nose portion of the pin and a shoulder portion that contacts the shoulder portion of the pin, and the pin and the box are coupled by the screw coupling.
- the threaded joint for steel pipes according to (1) wherein the strain ⁇ in the pipe circumferential direction of the seal portion calculated in (1) is 0.30% or more.
- FIG. 1A It is a whole sectional view showing an example of an embodiment of the present invention. It is an expanded sectional view which shows the thread part in FIG. 1A. It is an expanded sectional view showing the pin nose vicinity in Drawing 1A. It is sectional drawing which shows the definition of the distortion
- a threaded joint for steel pipes according to the present invention includes, as shown in FIGS. 1A to 1C, for example, a male screw portion 7, a nose portion 8 extending from the male screw portion 7 toward the pipe end side, and a tip of the nose portion 8.
- a pin 3 having a shoulder portion 12 provided; a female screw portion 5 screwed to the male screw portion 7 to form a screw portion; an inner peripheral surface of the nose portion facing the outer peripheral surface of the nose portion of the pin 1;
- a box 1 having a shoulder portion 14 that contacts one shoulder portion 12, and the pin and the box are coupled by the screw coupling, and the nose portion outer peripheral surface of the pin member and the nose portion inner peripheral surface of the box Is a threaded joint for steel pipes in which the metal-metal contact and the contact portion form the seal portion 20, and the seal portion of the pin is in a toroid shape (conical curved surface shape (toroidal sealing surface shape)).
- the load flank angle ⁇ of the threaded portion is set to the negative side as shown in FIG. 1B, and the torque of the shoulder portions 12 and 14 is used.
- the shoulder angle ⁇ is set to the negative side, and the ratio L / d 0 between the length L of the nose portion 8 and the tube outer diameter d 0 is set to 0.08 or more.
- the load flank angle ⁇ By setting the load flank angle ⁇ to the negative side, preferably ⁇ 4 degrees or less, it is possible to prevent the screws from dropping off on the bending tension side. Further, by setting the torque shoulder angle ⁇ to the negative side, preferably less than ⁇ 15 degrees, it becomes a fulcrum against the bending on the compression side of the bending, and suppresses the movement to leave the seal portion. Further, by the length of the nose portion of the ratio L / d 0 of (nose length) L and outer diameter d 0 and 0.08 or more, the flexible nose portion between the threaded portion and the shoulder portion It is possible to reduce the deformation of the threaded portion and the shoulder portion that serve as bending fulcrums. By combining these, slippage at the contact surface between the pipe and the threaded joint can be prevented, and airtightness can be ensured by maintaining the fitted state.
- the load flank angle ⁇ is preferably ⁇ 7 degrees or more, because if the absolute value of the negative side angle is too large, it becomes disadvantageous in terms of galling resistance. More preferably, it is -5.5 to -4.5 degrees.
- the torque shoulder angle ⁇ is preferably ⁇ 20 degrees or more, because if the absolute value of the negative angle is excessively increased, it is disadvantageous in terms of ensuring airtightness after the compression load. More preferably, it is ⁇ 18 to ⁇ 16 degrees. If the ratio L / d 0 between the nose length and the pipe outer diameter is too large, the peristaltic distance of the seal portion during tightening becomes long, which is disadvantageous in terms of galling resistance, and the processing time of the seal portion is large. Therefore, L / d 0 is preferably 0.14 or less. More preferably, it is 0.08 to 0.11.
- the seal diameter D and the interference amount ⁇ are as shown in FIG. 2.
- the seal diameter D is the outer peripheral surface of the nose portion on the pin 3 side that first contacts the inner peripheral surface of the nose portion on the box 1 side during screw connection.
- the outer diameter of the pin at the seal point, which is the upper part, and the amount of interference ⁇ is the amount of diameter reduction when the seal point is reduced by the box 1 at the time of screw connection.
- strain (epsilon) of the pipe peripheral direction of a seal part will become disadvantageous at the point of galling resistance if too large, 0.7% or less is preferable. More preferably, it is 0.3% to 0.6%.
- the pipe end of the steel pipe having the outer diameter d 0 (inch) shown in Table 1-1, Table 1-2, and Table 1-3 is machined, and the pin seal portion 21 has a toroid shape (conical curve rotation surface shape) and has a pin seal surface.
- an airtight A test (Sealability leak test A or tightness leak test A), an airtight B (including bending) test, and an airtight C test were performed.
- the results are also shown in Table 1.
- Table 1 shows those with seal expired as x (bad), and those without seal expired as ⁇ (good).
- the test was completed without causing the seal to expire, and excellent sealing performance was exhibited.
- seal expiration was recognized.
- FIG. 5 is a graph showing the load condition of the airtight B test defined in ISO 13679 as an example.
- the horizontal axis indicates the axial stress generated in the pipe by tension (compression) / bending, and the vertical axis indicates the internal pressure acting on the inner surface of the pipe.
- the curve indicated by the broken line on the outside indicates that the equivalent stress when combined with tension (compression) / bending / internal pressure is equivalent to the yield stress of the material (100% of the yield stress).
- the curve shown by the inner solid line is a curve in which the equivalent stress corresponds to 90% of the yield stress of the material.
- the airtight B test of the above-described test type 1 determines whether or not the seal has expired by using each point of the 90% load curve as an evaluation point.
- Table 1-1 and Table 1-2 in Invention Examples 1 to 12 where the ratio L / d 0 of the nose length to the outer diameter of the tube is 0.08 or more, the airtight test result of Test Type 1 There was no seal expiration in (A, B, C).
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Abstract
Description
図4の例では、メタルタッチシール部はピンノーズ8の先端部にあるが、特許文献1には、耐外圧性能を増すために、ピンノーズ8のねじ部近くにメタルタッチシール部を設け、ノーズ部をシール部からショルダ部まで長く伸ばすものも提案されている。この特許文献1に開示されるねじ継手においては、ボックス部材と非接触なピンノーズを、シール部とは不連続な形状となるように長く伸ばしてピンノーズの厚みが薄くならないように構成されており、前述の耐外圧性能の他に、耐軸圧縮性能の向上も実現している。
これら、特許文献1,2に記載されるように、シール部位置をピンのねじ部位置近くに置き、ピンノーズ先端から離すことは、耐外圧性能(external pressure resistance)、耐引張性能(tension resistance)の向上とともに、ねじに対して安定的な性能を持たせる上で有効であり、それはFEMシミュレーション(finite element method simulation)等からも確認できる。またシール部と不連続な形状となるピンノーズは、強い軸圧縮力(axial compression)が負荷された場合に、それ自体が変形し、ボックス部材のトルクショルダ部の塑性変形(plastic deformation)を軽減させる効果もある。しかし、一方で、ねじとノーズの境界の不連続部に過度な変形が入ることもあり、これは締付けトルク(make up torque)に依存すると考えられる。
尚、ロードフランク角度とは、ロードフランク面15がねじ継手軸との直交線に対してなす角度(図1B中の角度α)であり、該直交線がロードフランク面の下端(ピン内径側の端)を通るとき、該直交線に対して前記ロードフランク面の上端(ピン外径側の端)が、ピン先端側に位置する場合は正、ピン後端側に位置する場合は負とされる。
すなわち本発明は次のとおりである。
(1)
雄ねじ部と、該雄ねじ部より管端側に延在するノーズ部と、該ノーズ部の先端に設けられたショルダ部とを有するピンと、前記雄ねじ部とねじ結合されてねじ部をなす雌ねじ部と、前記ピンのノーズ部外周面に相対するノーズ部内周面と、前記ピンのショルダ部に当接するショルダ部とを有するボックスとを有し、前記ねじ結合により前記ピンとボックスとが結合されてピンの前記ノーズ部外周面とボックスの前記ノーズ部内周面とがメタル‐メタル接触しその接触部がシール部をなす鋼管用ねじ継手であって、前記ねじ部のロードフランク角度を負側とし、前記ショルダ部のトルクショルダ角度を負側とし、前記ノーズ部の長さLと管外径d0の比L/d0を0.08以上としたことを特徴とする鋼管用ねじ継手。
(2)
前記ねじ結合の際にボックス側のノーズ部内周面と最初に接触するピン側のノーズ部外周面上の部位であるシールポイント(seal point)におけるピン外径で定義したシール径Dと、前記シールポイントがボックスで縮径されたとしたときの該縮径量で定義した干渉量δとから、ε=δ/D*100(%)
で算出されるシール部の管周方向のひずみεが0.30%以上であることを特徴とする(1)に記載の鋼管用ねじ継手。
(3)
前記ピンおよび前記ボックスのショルダ部のトルクショルダ角度が−15°未満であることを特徴とする(1)または(2)に記載の鋼管用ねじ継手。
さらに、トルクショルダ角度βを負側、好ましくは−15度未満とすることで、曲げの圧縮側での曲げに抗する支点となり、シール部の離れようとする動きを抑える。
さらに、ノーズ部の長さ(ノーズ長さ)Lと管外径d0の比L/d0を0.08以上とすることで、ねじ部とショルダ部の間のノーズ部に可撓性を与え、曲げの支点となるねじ部とショルダ部の変形を低減することができる。
これらを組み合わせることにより、管とねじ継手の接触面での滑りを防ぎ、嵌め合い状態を維持することで気密性を確保することができる。
トルクショルダ角度βは、負側の角度の絶対値を大きくしすぎると圧縮負荷後の気密性の確保の点で不利となるため、−20度以上が好ましい。さらに好ましくは、−18~−16度である。
ノーズ長さと管外径の比L/d0は、大きくしすぎると締付けのときのシール部の褶動距離が長くなり耐ゴーリング性の点で不利となることと、シール部の加工時間が大となるためL/d0は0.14以下とすることが好ましい。さらに好ましくは、0.08~0.11である。
図5は、例としてISO 13679に規定されている気密B試験の荷重条件を示すグラフである。横軸は引張(圧縮)/曲げによってパイプに生じる軸方向応力を、縦軸はパイプ内面に作用する内圧を示す。外側の破線で示した曲線は引張(圧縮)/曲げ/内圧が複合して作用した場合の相当応力が材料の降伏応力と等価(降伏応力の100%)であることを示している。内側の実線で示した曲線は相当応力が材料の降伏応力の90%に対応する曲線である。前述の試験タイプ1の気密B試験は、この90%の荷重曲線の各点を評価点としてシール失効の有無を判定するものである。
その結果、表1−1および表1−2に示すように、ノーズ長さと管外径の比L/d0が0.08以上である発明例1~12では、試験タイプ1の気密試験結果(A,B,C)でシール失効が無かった。
また、トルクショルダ角度βが、−15度未満である発明例6~10では、相当応力を降伏応力の105%まで負荷してもシール失効がないことが確認された。
3 ピン
5 雌ねじ部
7 雄ねじ部
8 ノーズ部(ピンノーズ)
11,13,20 シール部(詳しくはメタルタッチシール部)
12,14 ショルダ部(詳しくはトルクショルダ部)
15 ロードフランク面
21 ピンシール部
Claims (3)
- 雄ねじ部と、該雄ねじ部より管端側に延在するノーズ部と、該ノーズ部の先端に設けられたショルダ部とを有するピンと、
前記雄ねじ部とねじ結合されてねじ部をなす雌ねじ部と、前記ピンのノーズ部外周面に相対する内周面と、前記ピンのショルダ部に当接するショルダ部とを有するボックスとを有し、
前記ねじ結合により前記ピンとボックスとが結合されてピンの前記ノーズ部外周面とボックスの前記ノーズ部内周面とがメタル‐メタル接触しその接触部がシール部をなす鋼管用ねじ継手であって、
前記ねじ部のロードフランク角度を負側とし、前記ショルダ部のトルクショルダ角度を負側とし、前記ノーズ部の長さLと管外径d0の比L/d0を0.08以上とした鋼管用ねじ継手。 - 前記ねじ結合の際にボックス側のノーズ部内周面と最初に接触するピン側のノーズ部外周面上の部位であるシールポイントにおけるピン外径で定義したシール径Dと、前記シールポイントがボックスで縮径されたとしたときの該縮径量で定義した干渉量δとから、ε=δ/D*100(%)
で算出されるシール部の管周方向のひずみεが0.30%以上である請求項1に記載の鋼管用ねじ継手。 - 前記ピンおよび前記ボックスのショルダ部のトルクショルダ角度が−15°未満である請求項1または2に記載の鋼管用ねじ継手。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2013146969/06A RU2541364C1 (ru) | 2011-03-22 | 2012-02-24 | Резьбовое соединение для стальных труб |
MX2013010500A MX335962B (es) | 2011-03-22 | 2012-02-24 | Union roscada para tuberias de acero. |
US14/006,245 US8991875B2 (en) | 2011-03-22 | 2012-02-24 | Threaded joint for steel pipes |
BR112013024151-9A BR112013024151B1 (pt) | 2011-03-22 | 2012-02-24 | Junta roscada para tubos de aço |
CA2827922A CA2827922C (en) | 2011-03-22 | 2012-02-24 | Threaded joint for steel pipes |
EP12760806.5A EP2690336B1 (en) | 2011-03-22 | 2012-02-24 | Threaded joint for steel pipes |
ES12760806T ES2762248T3 (es) | 2011-03-22 | 2012-02-24 | Junta roscada para tuberías de acero |
AU2012232466A AU2012232466B2 (en) | 2011-03-22 | 2012-02-24 | Threaded joint for steel pipes |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2011-061942 | 2011-03-22 | ||
JP2011061942 | 2011-03-22 | ||
JP2011210031A JP5923911B2 (ja) | 2011-03-22 | 2011-09-27 | 鋼管用ねじ継手 |
JP2011-210031 | 2011-09-27 |
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WO2012128015A1 true WO2012128015A1 (ja) | 2012-09-27 |
Family
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PCT/JP2012/055293 WO2012128015A1 (ja) | 2011-03-22 | 2012-02-24 | 鋼管用ねじ継手 |
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US (1) | US8991875B2 (ja) |
EP (1) | EP2690336B1 (ja) |
JP (1) | JP5923911B2 (ja) |
CN (2) | CN102691481A (ja) |
AR (1) | AR085462A1 (ja) |
AU (1) | AU2012232466B2 (ja) |
BR (1) | BR112013024151B1 (ja) |
CA (1) | CA2827922C (ja) |
ES (1) | ES2762248T3 (ja) |
MX (1) | MX335962B (ja) |
RU (1) | RU2541364C1 (ja) |
WO (1) | WO2012128015A1 (ja) |
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WO2016113790A1 (ja) * | 2015-01-15 | 2016-07-21 | Jfeスチール株式会社 | 管用ねじ継手 |
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JP5923911B2 (ja) * | 2011-03-22 | 2016-05-25 | Jfeスチール株式会社 | 鋼管用ねじ継手 |
JP5891700B2 (ja) * | 2011-10-17 | 2016-03-23 | Jfeスチール株式会社 | 管のねじ継手 |
US10025889B2 (en) * | 2013-11-06 | 2018-07-17 | Vetco Gray, LLC | Stress amplification factor analysis methodology for assessing fatigue performance of threaded connectors |
JP5971264B2 (ja) * | 2014-01-10 | 2016-08-17 | Jfeスチール株式会社 | 極厚肉油井管用ねじ継手 |
WO2015147936A1 (en) * | 2014-03-24 | 2015-10-01 | Materion Corporation | Drilling component |
US9683684B1 (en) | 2015-12-09 | 2017-06-20 | Certus Energy Solutions, Llc | Tubular coupling |
US11466800B2 (en) | 2015-12-09 | 2022-10-11 | Certus Energy Solutions, Llc | Tubular coupling |
EP3260649B1 (en) * | 2016-06-21 | 2019-12-18 | Energy Frontier Solutions S.L. | Threaded joint for oil and gas pipes |
US20200141522A1 (en) * | 2017-05-25 | 2020-05-07 | Nippon Steel Corporation | Threaded Connection for Steel Pipe |
US11391399B2 (en) * | 2018-08-21 | 2022-07-19 | Nippon Steel Corporation | Threaded connection for steel pipes |
CN113227626B (zh) * | 2018-12-25 | 2022-11-29 | 日本制铁株式会社 | 钢管用螺纹接头 |
CN110159844A (zh) * | 2019-06-26 | 2019-08-23 | 柳道万和(苏州)热流道系统有限公司 | 密封装置及密封装置的安装方法 |
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- 2012-02-24 EP EP12760806.5A patent/EP2690336B1/en active Active
- 2012-02-24 CA CA2827922A patent/CA2827922C/en active Active
- 2012-02-24 AU AU2012232466A patent/AU2012232466B2/en active Active
- 2012-02-24 RU RU2013146969/06A patent/RU2541364C1/ru active
- 2012-02-24 BR BR112013024151-9A patent/BR112013024151B1/pt active IP Right Grant
- 2012-02-24 US US14/006,245 patent/US8991875B2/en active Active
- 2012-02-24 ES ES12760806T patent/ES2762248T3/es active Active
- 2012-02-24 MX MX2013010500A patent/MX335962B/es unknown
- 2012-03-21 AR ARP120100920A patent/AR085462A1/es active IP Right Grant
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US20180258709A1 (en) * | 2015-01-15 | 2018-09-13 | Jfe Steel Corporation | Screw joint for pipe (as amended) |
Also Published As
Publication number | Publication date |
---|---|
BR112013024151A2 (pt) | 2016-12-20 |
EP2690336B1 (en) | 2019-10-02 |
AU2012232466A1 (en) | 2013-09-12 |
CA2827922C (en) | 2016-10-11 |
EP2690336A1 (en) | 2014-01-29 |
JP5923911B2 (ja) | 2016-05-25 |
CN102691481A (zh) | 2012-09-26 |
ES2762248T3 (es) | 2020-05-22 |
AR085462A1 (es) | 2013-10-02 |
AU2012232466B2 (en) | 2015-09-03 |
RU2541364C1 (ru) | 2015-02-10 |
JP2012211683A (ja) | 2012-11-01 |
EP2690336A4 (en) | 2015-11-11 |
US8991875B2 (en) | 2015-03-31 |
CA2827922A1 (en) | 2012-09-27 |
MX335962B (es) | 2016-01-05 |
BR112013024151B1 (pt) | 2020-06-16 |
CN202612908U (zh) | 2012-12-19 |
US20140049045A1 (en) | 2014-02-20 |
MX2013010500A (es) | 2013-10-01 |
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