公开(公告)号：CA3088237C

公开(公告)日：2022-11-01

申请号：CA3088237

申请日：2019-02-14

Applicant: JFE STEEL CORP

Inventor： KAWAI TAKAMASA ,  YOSHIKAWA MASAKI ,  TAKANO JUN ,  NAGAHAMA TAKUYA ,  SEKI HARUHIKO

IPC: F16L15/04 ,  E21B17/042

Abstract: Provided is a screw joint for an oil well pipe of an integral type and includes: (i) a pin that is provided with a male screw portion which is a male taper screw, at a first end of a steel pipe; and (ii) a box that is provided with a female screw portion which is a female taper screw fitted to the male screw portion, at the first end of the steel pipe, wherein a structure, in which the pin and the box are in metal contact with each other to seal a fluid, is provided at least at one place of a seal portion on an outer peripheral surface side of a pipe end side of the pin and a seal portion on an inner peripheral surface side of a pipe end side of the box.

公开(公告)号：AU2019230247C1

公开(公告)日：2022-10-27

申请号：AU2019230247

申请日：2019-02-14

Applicant: JFE STEEL CORP

Inventor： KAWAI TAKAMASA ,  YOSHIKAWA MASAKI ,  TAKANO JUN ,  NAGAHAMA TAKUYA ,  SEKI HARUHIKO

IPC: F16L15/04 ,  E21B17/042

Abstract: Provided is a screw joint for an oil well pipe in which the screw length of a joint portion is made more efficient, and with which machining time and installation time are reduced. The present invention provides an integral type screw joint for an oil well pipe, including a pin, obtained by providing a male threaded portion, which is a male tapered thread, at one end of a steel pipe, and a box, obtained by providing a female threaded portion, which is a female tapered thread that mates with the male threaded portion, at one end of a steel pipe, and provided in at least one location in an outer circumferential surface side seal portion of the pipe end side of the pin and an inner circumferential surface side seal portion of the pipe end side of the box with a construction that seals a fluid by metal contact between the pin and the box, wherein a minimum value L

公开(公告)号：AU2019230247B2

公开(公告)日：2021-11-11

申请号：AU2019230247

申请日：2019-02-14

Applicant: JFE STEEL CORP

Inventor： KAWAI TAKAMASA ,  YOSHIKAWA MASAKI ,  TAKANO JUN ,  NAGAHAMA TAKUYA ,  SEKI HARUHIKO

IPC: F16L15/04 ,  E21B17/042

Abstract: Provided is a screw joint for an oil well pipe in which the screw length of a joint portion is made more efficient, and with which machining time and installation time are reduced. The present invention provides an integral type screw joint for an oil well pipe, including a pin, obtained by providing a male threaded portion, which is a male tapered thread, at one end of a steel pipe, and a box, obtained by providing a female threaded portion, which is a female tapered thread that mates with the male threaded portion, at one end of a steel pipe, and provided in at least one location in an outer circumferential surface side seal portion of the pipe end side of the pin and an inner circumferential surface side seal portion of the pipe end side of the box with a construction that seals a fluid by metal contact between the pin and the box, wherein a minimum value L

公开(公告)号：AU2019230247A1

公开(公告)日：2020-07-30

申请号：AU2019230247

申请日：2019-02-14

Applicant: JFE STEEL CORP

Inventor： KAWAI TAKAMASA ,  YOSHIKAWA MASAKI ,  TAKANO JUN ,  NAGAHAMA TAKUYA ,  SEKI HARUHIKO

IPC: F16L15/04 ,  E21B17/042

Abstract: Provided is a screw joint for an oil well pipe in which the screw length of a joint portion is made more efficient, and with which machining time and installation time are reduced. The present invention provides an integral type screw joint for an oil well pipe, including a pin, obtained by providing a male threaded portion, which is a male tapered thread, at one end of a steel pipe, and a box, obtained by providing a female threaded portion, which is a female tapered thread that mates with the male threaded portion, at one end of a steel pipe, and provided in at least one location in an outer circumferential surface side seal portion of the pipe end side of the pin and an inner circumferential surface side seal portion of the pipe end side of the box with a construction that seals a fluid by metal contact between the pin and the box, wherein a minimum value L

公开(公告)号：ES2762248T3

公开(公告)日：2020-05-22

申请号：ES12760806

申请日：2012-02-24

Applicant: JFE STEEL CORP

Inventor： YOSHIKAWA MASAKI ,  NAGAHAMA TAKUYA ,  CHIKATSUNE HIROSHI ,  TAKANO JUN ,  KAWAI TAKAMASA ,  TAKAHASHI KAZUNARI ,  UETA MASATERU ,  SONOBE OSAMU

IPC: F16L15/04 ,  E21B17/042 ,  F16L15/00 ,  F16L15/06

Abstract: Una junta roscada para tuberias de acero que comprende: un pasador (3) que incluye una porcion (7) roscada externamente, una nariz (8) que se extiende desde la porcion (7) roscada externamente hacia un extremo de una tuberia, y una porcion (12) de hombro dispuesta en un extremo distal de la nariz (8) y una caja (1) que incluye una porcion (5) roscada internamente que forma una porcion roscada al conectarse roscamente con la porcion (7) roscada externamente, una cara periferica interna que se enfrenta a una cara periferica externa de la nariz (8) del pasador (3), una nariz de la caja que mira hacia una cara periferica externa de la nariz (8) y una porcion (14) de hombro que esta en contacto con la porcion (12) de hombro del pasador (3), en donde, cuando el pasador (3) y la caja (1) estan conectados de forma roscada entre si y con la cara periferica exterior de la nariz (8) del pasador (3) y la cara periferica interna de la nariz de la caja (1) entrar en contacto de metal a metal entre si en una porcion de contacto, la porcion de contacto sirve como una porcion de sellado, en donde la porcion roscada tiene un angulo de flanco de carga negativo, la porcion (12, 14) de hombro tiene un angulo de hombro de torque negativo, y la relacion L/d0 de una longitud L de la nariz (8) y un diametro d0 exterior de tuberia es igual a o superior a 0,08, y en donde el angulo de hombro de torque de la porcion (12) de hombro del pasador (3) y el angulo de hombro de torque de la porcion (14) de hombro de la caja (1) son menores a -15°, en donde una tension ε de la porcion de sello en una direccion circunferencial de la tuberia, que se calcula como ε = δ/D-100 (%), es igual a o mayor que 0.30%, donde D es un diametro de sello que se define como un diametro exterior del pasador (3) en un punto de sellado que es un punto en la cara periferica externa de la nariz (8) del pasador (3) en el cual la cara periferica externa entra en contacto por primera vez con la cara periferica interna de la nariz de la caja (1) y δ es una cantidad de interferencia que se define como una cantidad por la cual el diametro exterior en el punto de sellado se reduce por la caja (1) cuando el pasador (3) y la caja (1) estan roscados entre si.

公开(公告)号：RU2712651C1

公开(公告)日：2020-01-30

申请号：RU2019105594

申请日：2017-09-13

Applicant: JFE STEEL CORP

Inventor： KAWAI TAKAMASA ,  KANAYAMA TARO ,  YOSHIKAWA MASAKI ,  TAKANO JUN ,  NAGAHAMA TAKUYA

IPC: F16L15/04

Abstract: Изобретениеотноситсяк резьбовомутрубномусоединению, используемомудлясоединениятрубдлянефтяныхскважин, инаправленонапредотвращениепластическойдеформациии повышениегерметичностисоединения. Резьбовоесоединениевключаетв себяниппельнуючасть, имеющуюнаружнуюрезьбу, ираструбнуючасть, имеющуювнутреннююрезьбу, входящуюв зацеплениес наружнойрезьбой, инаучасткеуплотнениянастороненаружнойпериферииплощадь S1 (мм) сеченияниппельнойчастив точкеуплотненияв заданномположениии площадь S0 (мм) сеченияучасткателатрубы, которыйявляетсянеобработаннымучасткомниппельнойчасти, удовлетворяетвыражению (S1/S0) × 100 ≥ 15(%), научасткеуплотнениянастороневнутреннейпериферииплощадь S2 (мм) сеченияраструбнойчастив точкеуплотненияв заданномположениии площадь S0' (мм) сеченияучасткателатрубы, которыйявляетсянеобработаннымучасткомраструбнойчасти, удовлетворяютвыражению (S2/S0') × 100 ≥ 20(%), иплощадь S3 (мм) поверхностиконтактногоучасткапромежуточногозаплечика C междурядами A и B резьби площадь S0 (мм) сеченияудовлетворяютвыражению (S3/S0) × 100 ≥ 10 (%). 1 з.п. ф-лы, 3 ил., 1 табл.

公开(公告)号：MY170818A

公开(公告)日：2019-08-30

申请号：MYPI2014000613

申请日：2012-10-16

Applicant: JFE STEEL CORP

Inventor： TAKANO JUN ,  NAGAHAMA TAKUYA ,  YOSHIKAWA MASAKI ,  KAWAI TAKAMASA ,  TAKAHASHI KAZUNARI ,  CHIKATSUNE HIROSHI ,  UETA MASATERU ,  MORIOKA NOBUHIKO

Abstract: [Object] To provide a threaded joint for pipes that is a radial seal type joint and that has both high galling resistance and high sealability. [Solution] In the threaded joint for pipes, a coating having a Vickers hardness greater than or equal to 310 is formed on a threaded portion of the box (1) and an inner face of the box (1) corresponding to a seal portion (20). The seal interference amount ratio 8/D of the seal portion in a pipe circumferential direction is greater than or equal to 0.002, where Dis a seal diameter defined as an outside diameter of the pin (3) at a seal point that is a point on the outer peripheral face of the nose (8) of the pin (3) at which the outer peripheral face first comes into contact with the inner peripheral face of the nose (8) of the box (1) and 8 is an interference amount defined as an amount by which the outside diameter at the seal point is reduced by the box (1) when the pin (3) and the box (1) are threadedly connected with each other. [Selected Figure] Fig. 4

公开(公告)号：CA2801204C

公开(公告)日：2016-08-09

申请号：CA2801204

申请日：2011-06-22

Applicant: JFE STEEL CORP

Inventor： SONOBE OSAMU ,  NAGAHAMA TAKUYA ,  YOSHIKAWA MASAKI ,  TAKANO JUN ,  KAWAI TAKAMASA ,  TAKAHASHI KAZUNARI

IPC: F16L15/04

Abstract: Disclosed is a pipe screw coupling that has increased sealing properties, compression resistance, and galling resistance. Specifically, the pin nose outer peripheral surface (30) forms a convex curve on the outside thereof in a cross section in the axial direction. Said convex curve has a curved shape wherein a compound-R curve (N) comprising a plurality of outwardly convex arcs that are connected in sequence and that have radii of curvature (R) that differ from each other at the generating line of a cylindrical section that is adjacent to a male screw section (5) is such that the radii of curvature (R) of the arcs increase with distance from the male screw section (5) and the line tangent to the connection point of an arc is the same as that of the arc connected to. The inner peripheral surface relative to the pin nose (30) of a box member (1) has a tapered surface (20) that interferes with the pin nose outer peripheral surface (30) when connecting with the pin member (3).

公开(公告)号：MX2015009511A

公开(公告)日：2015-11-16

申请号：MX2015009511

申请日：2013-01-28

Applicant: JFE STEEL CORP

Inventor： SONOBE OSAMU ,  NAGAHAMA TAKUYA ,  YOSHIKAWA MASAKI ,  TAKANOJUN ,  KAWAI TAKAMASA

IPC: F16L15/04

Abstract: Se proporciona una junta roscada en la cual la cara periférica externa 31 de la nariz de extremo macho 8 tiene una forma ahusada sencilla, la cara de sello 21 de la unión hembra 1 tiene una forma curva y convexa hacia el exterior, y un punto de sello xp definido por la siguiente ecuación es mayor que o igual a 0.2 pulgadas, Ecuación 1 (ver Fórmula) en donde p es una presión de cara de contacto, x es una distancia desde un extremo del extremo macho en una dirección del eje de tubería, y x1 y x2 son, respectivamente, un límite inferior y un límite superior de un dominio de x correspondiente a la porción de sello.

公开(公告)号：AU2012223950B2

公开(公告)日：2015-09-03

申请号：AU2012223950

申请日：2012-02-24

Applicant: JFE STEEL CORP

Inventor： KAWAI TAKAMASA ,  TAKAHASHI KAZUNARI ,  CHIKATSUNE HIROSHI ,  YOSHIKAWA MASAKI ,  TAKANO JUN ,  NAGAHAMA TAKUYA ,  UETA MASAKI ,  SONOBE OSAMU

IPC: F16L15/04

Abstract: In a radial-seal type threaded coupling for a steel pipe, there is room for improvement in ensuring the seal in terms of the rigidity of a pin nose. Specifically, the nose portion outer peripheral surface of a pin (3) is provided with a shape of an outwardly convex curved surface, the seal surface of a box (1) is provided with a tapered shape, and the cross-sectional area of the pin at a seal point (sp), which is a part on the nose portion outer peripheral surface of the pin that first comes into contact with the seal surface of the box when establishing a threaded engagement, is set to be equal to or greater than 35 % of the cross-sectional area of a base pipe portion, which is an unprocessed portion of the pin.