WO2020195621A1 - 鋼管用ねじ継手 - Google Patents
鋼管用ねじ継手 Download PDFInfo
- Publication number
- WO2020195621A1 WO2020195621A1 PCT/JP2020/009003 JP2020009003W WO2020195621A1 WO 2020195621 A1 WO2020195621 A1 WO 2020195621A1 JP 2020009003 W JP2020009003 W JP 2020009003W WO 2020195621 A1 WO2020195621 A1 WO 2020195621A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- stubing
- pin
- screw
- male screw
- box
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 107
- 239000010959 steel Substances 0.000 title claims abstract description 107
- 230000008878 coupling Effects 0.000 title claims abstract description 40
- 238000010168 coupling process Methods 0.000 title claims abstract description 40
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 40
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 238000007789 sealing Methods 0.000 description 15
- 239000003129 oil well Substances 0.000 description 14
- 238000005520 cutting process Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 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
-
- 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
- F16L15/002—Screw-threaded joints; Forms of screw-threads for such joints with conical threads with more then one threaded section
-
- 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
- F16L15/06—Screw-threaded joints; Forms of screw-threads for such joints characterised by the shape of the screw-thread
-
- 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
- F16L2201/00—Special arrangements for pipe couplings
- F16L2201/10—Indicators for correct coupling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Definitions
- the present disclosure relates to a threaded joint for steel pipes, and more particularly to a coupling type threaded joint for connecting two steel pipes to each other.
- oil wells For example, exploratory drilling or production of oil wells and natural gas wells (hereinafter collectively referred to as "oil wells"), development of non-conventional resources such as oil sands and shale gas, carbon capture and storage (CCS (Carbon)). In dioxide Capture and Storage)), geothermal power generation, hot springs, etc., steel pipes called oil well pipes are used. Threaded joints are used to connect the steel pipes.
- the types of threaded joints for steel pipes of this type are roughly divided into coupling type and integral type.
- the coupling type of the pair of pipe materials to be connected, one pipe material is a steel pipe and the other pipe material is a coupling.
- male threads are formed on the outer circumferences of both ends of the steel pipe, and female threads are formed on the inner circumferences of both ends of the coupling. Then, the male screw of the steel pipe is screwed into the female screw of the coupling, whereby both are fastened and connected.
- the pair of pipe materials to be connected are both steel pipes, and separate couplings are not used.
- a male screw is formed on the outer circumference of one end of the steel pipe, and a female screw is formed on the inner circumference of the other end. Then, the male screw of one steel pipe is screwed into the female screw of the other steel pipe, whereby both are fastened and connected.
- the joint part of the pipe end where the male thread is formed is called a "pin” because it contains an element to be inserted into the female thread.
- the joint portion of the pipe end portion on which the female thread is formed is referred to as a "box” because it contains an element that accepts the male thread. Since these pins and boxes are the ends of the pipe material, they are both tubular.
- the well is dug while reinforcing the well wall with oil well pipes so that the well wall does not collapse during excavation, resulting in a structure in which oil well pipes are arranged multiple times.
- the inner and outer diameters of joints are made of steel pipes for connecting oil well pipes. Threaded joints that are about the same as or slightly larger than the inner and outer diameters are often used. By using such a threaded joint, it is possible to minimize the gap between the well pipes arranged in a plurality of wells, and even if it is deep, the diameter of the well does not become so large and the well can be efficiently developed.
- the threaded joint has a fluid pressure from the inside (hereinafter, also referred to as “internal pressure”) and a fluid pressure from the outside (hereinafter, also referred to as “external pressure”).
- Excellent sealing performance is required.
- a large tensile load or compressive load is applied to the threaded joint due to thermal expansion of the oil well pipe.
- the threaded joint is also required to have excellent sealing performance.
- metal seal As a threaded joint for ensuring sealing performance, one having a metal-metal contact seal (hereinafter referred to as "metal seal”) is known.
- metal seal With a metal seal, the diameter of the seal surface of the pin is slightly larger than the diameter of the seal surface of the box, and when the thread joints are fastened and the seal surfaces are fitted together, the seal surface of the pin is reduced in diameter and the box The diameter of the sealing surface is expanded, and the elastic recovery force of each sealing surface to return to the original diameter generates contact pressure on the sealing surface to bring them into close contact with each other all around the structure to exhibit sealing performance.
- a threaded joint for ensuring sealing performance there is also known one having a structure in which a threaded portion has sealing performance without a metal seal or in combination with a metal seal. Specifically, in the region where the threaded portion has a predetermined length or longer in the fastened state, the gap between the threaded surfaces of the pin and the box is small, and a viscous lubricant called dope is present in the gap, and the pin and the box have a viscous lubricant. It is a structure in which a contact surface pressure is applied to the screw surface due to the interference of the screw diameter (hereinafter, this structure is referred to as a “screw seal (structure)”). A screw joint having such a screw seal and having a sealing performance against internal pressure and external pressure is also known.
- the purpose of the present disclosure is to provide a threaded joint for steel pipes that can be fastened quickly and properly.
- the threaded joint for steel pipes includes a first steel pipe, a second steel pipe, and a coupling for connecting the first and second steel pipes to each other.
- the first steel pipe includes a first pipe body and a tubular first pin.
- the first pin is formed continuously with the main body of the first pipe and is formed at the tip of the first steel pipe.
- the second steel pipe includes a second pipe body and a tubular second pin.
- the second pin is formed continuously with the second pipe body and is formed at the tip of the second steel pipe.
- the coupling includes a tubular first box and a tubular second box. The first box is fastened to the first pin by inserting the first pin.
- the second box is formed on the opposite side of the first box, and the second pin is inserted and fastened to the second pin.
- Each of the first and second pins contains a male screw formed on the outer circumference of the pin.
- Each of the first and second boxes corresponds to a male screw and includes a female screw formed on the inner circumference of the box.
- the male and female threads are trapezoidal threads and tapered threads. At least a portion of the male and female threads in the fastened state constitutes a thread seal.
- the male thread includes a male thread thread surface, a male thread bottom surface, a male thread stubing surface formed on a side closer to the tip of the pin, and a male thread load surface formed on a side far from the tip of the pin.
- the male thread stubing surface is formed on the side far from the pipe axis of the steel pipe, and is formed on the side close to the pipe axis with the first male screw stubing step having a stubing angle of -10 to 15 degrees, and has a stubing angle of 20 to 60 degrees. It has a second male screw stubing step.
- the second male thread stubing step has a height of 20 to 60% of the height of the male thread.
- the female thread includes a female thread surface facing the male thread bottom surface, a female thread bottom surface facing the male thread surface, a female thread stubing surface facing the male thread stubing surface, and a female thread loading surface facing the male thread load surface.
- the female thread stubing surface is formed on the side far from the tube axis and has the same stubing angle as the stubing angle of the first male thread stubing stage, and is formed on the side close to the tube axis and of the second male thread stubing stage. It has a second female screw stubing step having the same stubing angle as the stubing angle.
- the first pin further includes a first pin shoulder surface formed at the tip of the first pin.
- the second pin further includes a second pin shoulder surface formed at the tip of the second pin and in contact with the first pin shoulder surface in the fastened state.
- the first pipe body includes an annular first marking groove formed on the outer periphery of the first pipe body.
- FIG. 1 is a vertical cross-sectional view of the threaded joint for steel pipe according to the embodiment along the pipe axis direction.
- FIG. 2 is an enlarged vertical cross-sectional view showing the shapes of the male and female threads shown in FIG. 1, respectively.
- FIG. 3 is an enlarged vertical cross-sectional view of the male and female threads shown in FIG.
- the threaded joint for steel pipes includes a first steel pipe, a second steel pipe, and a coupling for connecting the first and second steel pipes to each other.
- the first steel pipe includes a first pipe body and a tubular first pin.
- the first pin is formed continuously with the main body of the first pipe and is formed at the tip of the first steel pipe.
- the second steel pipe includes a second pipe body and a tubular second pin.
- the second pin is formed continuously with the second pipe body and is formed at the tip of the second steel pipe.
- the coupling includes a tubular first box and a tubular second box. The first box is fastened to the first pin by inserting the first pin.
- the second box is formed on the opposite side of the first box, and the second pin is inserted and fastened to the second pin.
- Each of the first and second pins contains a male screw formed on the outer circumference of the pin.
- Each of the first and second boxes corresponds to a male screw and includes a female screw formed on the inner circumference of the box.
- the male and female threads are trapezoidal threads and tapered threads. At least a portion of the male and female threads in the fastened state constitutes a thread seal.
- the male thread includes a male thread thread surface, a male thread bottom surface, a male thread stubing surface formed on a side closer to the tip of the pin, and a male thread load surface formed on a side far from the tip of the pin.
- the male thread stubing surface is formed on the side far from the pipe axis of the steel pipe and is formed on the side close to the pipe axis with the first male screw stubing step having a stubing angle of -10 to 15 degrees and has a stubing angle of 20 to 60 degrees. It has a second male screw stubing step.
- the second male thread stubing step has a height of 20 to 60% of the height of the male thread.
- the female thread includes a female thread surface facing the male thread bottom surface, a female thread bottom surface facing the male thread surface, a female thread stubing surface facing the male thread stubing surface, and a female thread loading surface facing the male thread load surface.
- the female thread stubing surface is formed on the side far from the pipe axis and has the same stubing angle as the stubing angle of the first male thread stubing stage. It has a second female screw stubing step having the same stubing angle as the stubing angle.
- the first pin further includes a first pin shoulder surface formed at the tip of the first pin.
- the second pin further includes a second pin shoulder surface formed at the tip of the second pin and in contact with the first pin shoulder surface in the fastened state.
- the first pipe body includes an annular first marking groove formed on the outer periphery of the first pipe body.
- the first and second steel pipes can be quickly and appropriately fastened to the coupling.
- the second pipe body may include an annular second marking groove formed on the outer periphery of the second pipe body.
- the first marking groove may have a width narrower than the width of the second marking groove.
- the first box may further include a tubular first recess.
- the first recess is formed at the open end of the first box and has an inner peripheral surface that faces the outer peripheral surface of the first pipe body and is separated from the outer peripheral surface.
- the second box may further include a tubular second recess.
- the second recess is formed at the open end of the second box and has an inner peripheral surface that faces the outer peripheral surface of the second pipe body and is separated from the outer peripheral surface.
- the dope does not protrude from the opening end of the coupling and reach the marking groove.
- the portion of the male screw of the second pin and the female screw of the second box that constitutes the screw seal has a screw diameter smaller than the screw diameter interference amount of the male screw of the first pin and the female screw of the first box that constitutes the screw seal. It may have an amount of interference.
- the male screw of the first pin and the female screw of the first box may include a complete screw and an incomplete screw formed between the first pipe body and the complete screw.
- the first pin and the first box may be glued together with all or part of the incomplete screw in the fastened state.
- the steel pipe may have an outer diameter of more than 16 inches.
- the pipe assembly includes a first steel pipe and a coupling for connecting the first and second steel pipes to each other.
- the first steel pipe includes a first pipe body and a tubular first pin.
- the first pin is formed continuously with the main body of the first pipe and is formed at the tip of the first steel pipe.
- the coupling includes a tubular first box and a tubular second box.
- the first box is fastened to the first pin by inserting the first pin.
- the second box is formed on the opposite side of the first box, and the second pin of the second steel pipe is inserted and fastened to the second pin.
- the first pin includes a male screw formed on the outer circumference of the pin.
- the first box corresponds to a male screw and includes a female screw formed on the inner circumference of the box.
- the male and female threads are trapezoidal threads and tapered threads. At least a portion of the male and female threads in the fastened state constitutes a thread seal.
- the male thread includes a male thread thread surface, a male thread bottom surface, a male thread stubing surface formed on a side closer to the tip of the pin, and a male thread load surface formed on a side far from the tip of the pin.
- the male thread stubing surface is formed on the side far from the pipe axis of the steel pipe, and is formed on the side close to the pipe axis with the first male screw stubing step having a stubing angle of -10 to 15 degrees, and has a stubing angle of 20 to 60 degrees.
- the second male thread stubing step has a height of 20 to 60% of the height of the male thread.
- the female thread includes a female thread surface facing the male thread bottom surface, a female thread bottom surface facing the male thread surface, a female thread stubing surface facing the male thread stubing surface, and a female thread loading surface facing the male thread load surface.
- the female thread stubing surface is formed on the side far from the tube axis and has the same stubing angle as the stubing angle of the first male thread stubing stage, and is formed on the side close to the tube axis and of the second male thread stubing stage.
- the first pin further includes a first pin shoulder surface formed at the tip of the first pin.
- the first pipe body includes an annular first marking groove formed on the outer periphery of the first pipe body. The open end of the first box is positioned within the width of the first marking groove.
- the screw joint 10 is a coupling type and includes a steel pipe 20 m, a steel pipe 20f, and a coupling 50 for connecting the steel pipes 20m and 20f to each other.
- the steel pipes 20m and 20f are not particularly limited, but may have an outer diameter of more than 16 inches.
- the steel pipe 20 m includes a pipe body 21 m and a tubular pin 30 m.
- the pin 30m is formed continuously with the pipe body 21m and is formed at the tip portion 22m of the steel pipe 20m.
- the steel pipe 20f includes a pipe body 21f and a tubular pin 30f.
- the pin 30f is formed continuously with the pipe body 21f and is formed at the tip portion 22f of the steel pipe 20f.
- the coupling 50 includes a tubular box 40m and a tubular box 40f.
- the box 40m is fastened to the pin 30m by inserting the pin 30m.
- the box 40f is formed on the opposite side of the box 40m, and the pin 30f is inserted and fastened to the pin 30f.
- Each of the pins 30m and 30f includes male screws 31m and 31f formed on the outer circumference of the pins 30m and 30f.
- Each of the boxes 40m and 40f corresponds to the male threads 31m and 31f, and includes the female threads 41m and 41f formed on the inner circumference of the boxes 40m and 40f.
- the male screws 31m and 31f and the female screws 41m and 41f are trapezoidal screws and tapered screws.
- the pin 30m is called “mill end” because it is pre-fastened to the box 40m at the factory.
- the pin 30f is called the "field end” because it is fastened to the box 40f at the well.
- the male screws 31m and 31f are spirally formed on the outer circumferences of the pins 30m and 30f, and the diameter of the spiral becomes smaller as they approach the tips of the pins 30m and 30f (pin shoulder surfaces 24m and 24f).
- the female threads 41m and 41f are spirally formed on the inner circumferences of the boxes 40m and 40f, and the diameter of the spiral increases as they approach the opening ends 51m and 51f of the boxes 40m and 40f.
- the preferred taper ratio of the taper screw is 6.0 to 18.0%.
- the taper ratio is designed so that an appropriate threaded length can be obtained in relation to the wall thickness of the steel pipes 20m and 20f.
- the taper ratio may be constant, but it is preferable that the taper ratios of the male threads 31m and 31f become smaller as the distance from the tips of the pins 30m and 30f increases.
- At least a part of the male threads 31m and 31f and the female threads 41m and 41f in the fastened state constitutes a screw seal.
- a part of the male threads 31m and 31f and the female threads 41m and 41f constituting the screw seal has a length of three times or more the wall thickness of the steel pipes 20m and 20f in the pipe axial direction.
- the male threads 31m and 31f and the female threads 41m and 41f constituting the screw seal are complete threads. The longer the screw seal, the better the sealing performance. On the other hand, if the length of the screw seal is too long, thread cutting requires cost and labor, and there is a risk that goring is likely to occur at the time of fastening.
- the length of the screw seal is preferably 8 times or less the wall thickness.
- the screw joint 10 has such a screw seal, but does not have a metal seal.
- a Teflon® ring seal may be used in combination with the screw seal. Dope intervenes in the gaps between the screw seal surfaces. Sealing performance is improved by the intervention of dope.
- the portion of the male screw 31 m of the pin 30 m and the female screw 41 m of the box 40 m that constitutes the screw seal constitutes the screw seal of the male screw 31 f of the pin 30f and the female screw 41 f of the box 40 f. It has a screw diameter interference amount smaller than the screw diameter interference amount of the portion (screw seal portion).
- the screw diameter interference amount is the difference between the outer diameter of the screw seal portion of the pins 30m and 30f and the inner diameter of the screw seal portion of the boxes 40m and 40f corresponding to the screw seal portion.
- the screw diameter interference amount is a positive value in the entire area of the screw seal portion.
- the pin 30m further includes a pin shoulder surface 24m formed at the tip of the pin 30m.
- the pin 30f further includes a pin shoulder surface 24f formed at the tip of the pin 30f and in contact with the pin shoulder surface 24m in the fastened state.
- the threaded joint 10 has a so-called Pin to Pin structure.
- the pin 30 m of the mill end is first fastened to the box 40 m. After that, the field end pin 30f is fastened to the box 40f at the oil well. As a result, the pin shoulder surface 24f of the pin 30f comes into contact with the pin shoulder surface 24m of the pin 30m.
- the pipe body 21 m includes an annular marking groove 23 m.
- the marking groove 23m is formed on the outer circumference of the pipe body 21m.
- the tube body 21f includes an annular marking groove 23f.
- the marking groove 23f is formed on the outer periphery of the pipe body 21f.
- the marking groove 23m has a width wm narrower than the width wf of the marking groove 23f (wm ⁇ wf).
- the marking grooves 23m and 23f are formed by cutting the pipe bodies 21m and 21f with a cutting tool while rotating the steel pipes 20m and 20f with a lathe. Therefore, the marking grooves 23m and 23f extend in the circumferential direction and make one round of the pipe body 21m and 21f.
- the width wf of the marking groove 23f is 2 ⁇ (for example, 1.5 mm).
- the marking groove 23m is located at + ( ⁇ - ⁇ ) on the side far from the tip and - ⁇ on the side near the tip, centering on the opening end 51m of the box 40m.
- ⁇ ⁇ 3/4 ⁇ for example, 0.5 mm.
- the width wm of the marking groove 23 m is 2 ⁇ - ⁇ (for example, 1.0 mm). Therefore, the opening end 51 m of the box 40 m is positioned within the width wm of the marking groove 23 m.
- the box 40m further includes a tubular recess 52m.
- the recess 52m is formed at the open end of the box 40m and has an inner peripheral surface that faces the outer peripheral surface of the pipe body 21m and is separated from the outer peripheral surface.
- the box 40f further includes a tubular recess 52f.
- the recess 52f is formed at the open end of the box 40f and has an inner peripheral surface that faces the outer peripheral surface of the pipe body 21f and is separated from the outer peripheral surface.
- Each of the recesses 52m and 52f has a length of, for example, 15 mm, at least 5 mm in the tube axial direction.
- the male threads 31 m and 31f are the male thread thread surface 32, the male thread bottom surface 33, the male thread stubing surface 34, and the male thread. Including the road surface 35.
- the male screw stubing surface 34 is formed on the side close to the tip of the pins 30m and 30f.
- the male screw load surface 35 is formed on the side far from the tips of the pins 30m and 30f.
- the male screw stubing surface 34 has two male screw stubing steps 341 and 342.
- the male screw stubing step 341 is formed on the side of the steel pipe 20 far from the pipe shaft X and has a stubing angle ⁇ 1.
- the male screw stubing step 342 is formed on the side close to the pipe axis X and has a stubing angle ⁇ 2.
- the stubing angles ⁇ 1 and ⁇ 2 are angles at which the male screw stubbing surfaces 34 (male screw stubbing steps 341 and 342) are inclined with respect to the plane Y perpendicular to the pipe axis X. When the stubing surface 34 is overhanging, the stubing angle ⁇ 1 becomes negative.
- the stubing angle ⁇ 2 is larger than the stubging angle ⁇ 1 ( ⁇ 2> ⁇ 1).
- the stubing angle ⁇ 1 is ⁇ 10 to 15 degrees.
- the upper limit of the stubing angle ⁇ 1 is preferably 14 degrees, more preferably 13 degrees, still more preferably 12 degrees.
- the lower limit of the stubing angle ⁇ 1 is preferably 0 degrees, more preferably 8 degrees.
- the larger ⁇ 1 the easier the cutting process when forming the threaded portion.
- the stubing angle ⁇ 1 is, for example, about 10 degrees.
- the stubing angle ⁇ 2 is 20 to 60 degrees.
- the upper limit of the stubing angle ⁇ 2 is preferably 50 degrees, more preferably 40 degrees, still more preferably 32 degrees. The smaller ⁇ 2, the higher the compression resistance.
- the lower limit of the stubing angle ⁇ 2 is preferably 23 degrees, more preferably 26 degrees, still more preferably 28 degrees. The larger ⁇ 2, the less likely it is that cross-threading will occur.
- the stubing angle ⁇ 2 is, for example, about 30 degrees. Therefore, the male screw stubing surface 34 is recessed in the middle part.
- the height of the male screw stubing step 342 (the length from the male screw bottom surface 33 to the boundary between the male screw stubing steps 341 and 342) is 25 to 60% of the height of the male screw, for example, 35%.
- the female threads 41m and 41f (hereinafter, collectively referred to as “41”) include a female thread thread surface 42, a female thread bottom surface 43, a female thread stubing surface 44, and a female thread load surface 45.
- the female thread surface 42 faces the bottom surface 33 of the male thread.
- the female thread bottom surface 43 faces the male thread thread surface 32.
- the female thread stubing surface 44 faces the male thread stubing surface 34.
- the female thread load surface 45 faces the male thread load surface 35.
- the female screw stubing surface 44 has two female screw stubing steps 441 and 442.
- the female thread stubing step 441 is formed on the side far from the tube shaft X and has the same stubing angle ⁇ 1 as the stubbing angle ⁇ 1 of the male thread stubing step 341.
- the female thread stubing step 442 is formed on the side close to the tube shaft X and has the same stubing angle ⁇ 2 as the stubbing angle ⁇ 2 of the male thread stubing step 342. Therefore, the female screw stubing surface 44 bulges substantially in the middle.
- the stubing angles ⁇ 1 and ⁇ 2 of the male screw stubing stages 341 and 342 and the stubizing angles ⁇ 1 and ⁇ 2 of the female screw stubbing stages 441 and 442 do not have to be completely the same, and may be substantially the same. That is, the stubing angles ⁇ 1 and ⁇ 2 may have an error due to cutting.
- the female screw stubing step 442 preferably has the same height as the male screw stubing step 342. As a result, the gap between the screw surfaces of the pin and the box does not become larger than necessary, and the screw seal structure can exhibit good sealing performance.
- the height of the male thread stubing step 342 and the height of the female thread stubing step 442 do not have to be exactly the same, but may be substantially the same. That is, these heights may have an error due to cutting.
- the male screw 31 further includes a male screw round surface 36 to 39.
- the male thread round surface 36 is formed at a corner between the male thread thread surface 32 and the male thread stubing surface 34.
- the male thread round surface 37 is formed at a corner between the male thread thread surface 32 and the male thread load surface 35.
- the male thread round surface 38 is formed at a corner between the male thread bottom surface 33 and the male thread stubing surface 34.
- the male thread round surface 39 is formed at a corner between the male thread bottom surface 33 and the male thread load surface 35.
- the female screw 41 includes the female screw round surfaces 46 to 49.
- the female thread round surface 46 is formed at a corner between the female thread thread surface 42 and the female thread stubing surface 44.
- the female thread round surface 47 is formed at a corner between the female thread thread surface 42 and the female thread load surface 45.
- the female thread round surface 48 is formed at a corner between the female thread bottom surface 43 and the female thread stubing surface 44.
- the female thread round surface 49 is formed at a corner between the female thread bottom surface 43 and the female thread load surface 45.
- the round surfaces 36 to 39 and 46 to 49 are so-called R surfaces (round chamfer surfaces) and have a predetermined radius of curvature.
- the radius of curvature is 0.1 to 1.2 mm, preferably 0.3 to 0.8 mm.
- the male screw load surface 35 has a load angle ⁇ .
- the load angle ⁇ is an angle at which the male screw load surface 35 is inclined with respect to the plane Y perpendicular to the pipe axis X. When the load surface 35 is overhanging, the load angle ⁇ becomes negative.
- the load angle ⁇ is ⁇ 10 to 3 degrees, preferably ⁇ 5 to -1 degree, for example, about -3 degree.
- the female thread load surface 45 has the same load angle ⁇ as the load angle ⁇ of the male thread load surface 35.
- the load angle ⁇ of the male thread load surface 35 and the load angle ⁇ of the female thread load surface 45 do not have to be exactly the same, and may be substantially the same. That is, the load angle ⁇ may have an error due to cutting.
- the male thread surface 32, the male thread bottom surface 33, the female thread thread surface 42, and the female thread bottom surface 43 are formed parallel to the pipe axis X. Specifically, the lines of the surfaces 32, 33, 42, and 43 appearing in the vertical cross section including the pipe axis X are parallel to the pipe axis X.
- the male screw stubing surface 34 and the female screw stubing surface 44 have a gap of 60 to 120 ⁇ m between them in the fastened state. Further, the male thread surface 32 and the female thread bottom surface 43 have a gap of 0 to 50 ⁇ m between them in the fastened state. The male thread bottom surface 33 and the female thread surface 42 also have a gap of 0 to 50 ⁇ m between them in the fastened state.
- the pin 30m of the mill end of the steel pipe 20m is screwed into the box 40m.
- the pin 30 m is screwed so that the opening end 51 m of the box 40 m is within the width wm of the marking groove 23 m.
- the steel pipe 20 m of the mill end is fastened to the coupling 50.
- the mill-end steel pipe 20 m and the coupling 50 form a pipe assembly, and the pipe assembly is shipped from the factory to the oil well.
- the pin 30f at the field end of the steel pipe 20f is screwed into the box 40f.
- the pin 30f is screwed in while the steel pipes 20m and 20f are gripped without gripping the coupling 50.
- the pin 30f is screwed so that the opening end 51f of the box 40f is within the width wf of the marking groove 23f.
- the field-end steel pipe 20f is fastened to the coupling 50.
- the threaded joint 10 is manufactured.
- the screw joint 10 since the marking groove 23 m is formed, at the mill end, the steel pipe 20 m is placed at a desired position while visually checking the positional relationship between the marking groove 23 m and the opening end 51 m of the box 40 m. It can be fastened to the coupling 50.
- the pin shoulder surface 24f of the pin 30f abuts against the pin shoulder surface 24m of the mill end. At this time, the fastening torque rises sharply. Therefore, if the steel pipe 20f is screwed in while monitoring this torque change, the steel pipe 20f can be fastened to the coupling 50 with an appropriate torque. However, in order to confirm this, it is necessary to perform a monitor operation to confirm the increase in torque after the fastening work one by one.
- the marking groove 23f is also formed in the steel pipe 20f, after tightening the steel pipe 20f with an appropriate torque set in advance, the positional relationship between the opening end 51f of the box 40f and the marking groove 23f can be visually confirmed. can do. As a result, the steel pipe 20f can be quickly and appropriately fastened to the coupling 50 without strictly monitoring the torque change as described above.
- recesses 52m and 52f are formed at the open ends of the boxes 40m and 40f. Therefore, even if the dope intervening in the gap between the screw seal surfaces seeps out, it accumulates in the gap between the recesses 52m and 52f and the pipe body 21m and 21f. Therefore, the dope does not protrude from the opening ends 51m and 51f of the coupling 50 and reach the marking grooves 23m and 23f. As a result, the positional relationship between the marking grooves 23m and 23f and the opening ends 51m and 51f can always be visually observed.
- the amount of screw diameter interference at the field end is smaller than the amount of screw diameter interference at the mill end. Therefore, the contact surface pressure between the pin 30f and the box 40f in the screwing process of the steel pipe 20f is smaller than the contact surface pressure between the pin 30m and the box 40m until the pin shoulder surface 24f comes into contact with the pin shoulder surface 24m. Therefore, the amount of rotation of the mill end due to rotation at the time of fastening at the field end can be reduced to zero or less than the allowable amount.
- “Rotating” is a phenomenon in which when the field-end steel pipe 20f is rotated and the pin 30f is screwed into the box 40f, the coupling 50 rotates together with the steel pipe 20f, that is, the mill-end steel pipe 20m rotates. is there.
- the screw diameter interference amount of the mill end is preferably a predetermined value or less in order to prevent seizure.
- the amount of screw diameter interference at the field end is preferably a predetermined value or more in order to improve the sealing performance of
- the pin 30 m and the box 40 m of the mill end include zones Z1 to Z3 in order from the tip of the pin 30 m.
- the male thread 31 m of the mill end pin 30 m and the female thread 41 m of the box 40 m may include a complete thread and an incomplete thread formed between the tube body 21 m and the complete thread. Complete threads are formed in zone Z2. Incomplete threads are formed in zones Z1 and Z3.
- the mill end pin 30 m and the box 40 m may be glued together with zone Z3 incomplete screws in the fastened state. Specifically, the pin 30 m and the box 40 m may be glued together with all or part of the incomplete screw in zone Z3.
- the pin 30 m and the box 40 m may be glued together with a portion of the complete screw adjacent to the incomplete screw.
- the amount of rotation of the mill end due to rotation can be reduced to zero or less than the allowable amount in the process of screwing the steel pipe 20f of the field end.
- the adhesive is applied in advance to the zone Z3 to which the pin 30 m and the box 40 m are to be adhered, and the dope is applied to the zone Z2 in advance.
- the adhesive may be applied to the entire zone Z3, or may be applied to a part of the zone Z3. Further, the adhesive may be applied so as to protrude from a part of the zone Z2 adjacent to the zone Z3. Further, the adhesive may be applied only to the male screw 31 m, the female screw 41 m only, or both.
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Abstract
Description
20m,20f:鋼管
21m,21f:管本体
23m,23f:マーキング溝
24m,24f:ピンショルダ面
30m,30f:ピン
31,31m,31f:雄ねじ
32:雄ねじ山面
33:雄ねじ底面
34:雄ねじスタビング面
341,342:雄ねじスタビング段
35:雄ねじロード面
40m,40f:ボックス
41,41m,41f:雌ねじ
42:雌ねじ山面
43:雌ねじ底面
44:雌ねじスタビング面
441,442:雌ねじスタビング段
45:雌ねじロード面
50:カップリング
51m,51f:開口端
52m,52f:リセス
Claims (10)
- 第1鋼管と、
第2鋼管と、
前記第1及び第2鋼管を互いに連結するためのカップリングとを備え、
前記第1鋼管は、
第1管本体と、
前記第1管本体と連続的に形成され、前記第1鋼管の先端部に形成される管状の第1ピンとを含み、
前記第2鋼管は、
第2管本体と、
前記第2管本体と連続的に形成され、前記第2鋼管の先端部に形成される管状の第2ピンとを含み、
前記カップリングは、
前記第1ピンが挿入されて前記第1ピンと締結される管状の第1ボックスと、
前記第1ボックスの反対側に形成され、前記第2ピンが挿入されて前記第2ピンと締結される管状の第2ボックスとを含み、
前記第1及び第2ピンの各々は、前記ピンの外周に形成される雄ねじを含み、
前記第1及び第2ボックスの各々は、前記雄ねじに対応し、前記ボックスの内周に形成される雌ねじを含み、
前記雄ねじ及び前記雌ねじは、台形ねじであり、かつ、テーパねじであり、
締結状態で前記雄ねじ及び前記雌ねじの少なくとも一部はねじシールを構成し、
前記雄ねじは、
雄ねじ山面と、
雄ねじ底面と、
前記ピンの先端に近い側に形成される雄ねじスタビング面と、
前記ピンの先端から遠い側に形成される雄ねじロード面とを含み、
前記雄ねじスタビング面は、
前記鋼管の管軸から遠い側に形成され、-10~15度のスタビング角を有する第1雄ねじスタビング段と、
前記管軸に近い側に形成され、20~60度のスタビング角を有する第2雄ねじスタビング段とを有し、
前記第2雄ねじスタビング段は、前記雄ねじの高さの20~60%の高さを有し、
前記雌ねじは、
前記雄ねじ底面と対向する雌ねじ山面と、
前記雄ねじ山面と対向する雌ねじ底面と、
前記雄ねじスタビング面と対向する雌ねじスタビング面と、
前記雄ねじロード面と対向する雌ねじロード面とを含み、
前記雌ねじスタビング面は、
前記管軸から遠い側に形成され、前記第1雄ねじスタビング段のスタビング角と同じスタビング角を有する第1雌ねじスタビング段と、
前記管軸に近い側に形成され、前記第2雄ねじスタビング段のスタビング角と同じスタビング角を有する第2雌ねじスタビング段とを有し、
前記第1ピンはさらに、前記第1ピンの先端に形成される第1ピンショルダ面を含み、
前記第2ピンはさらに、前記第2ピンの先端に形成され、締結状態で前記第1ピンショルダ面と接触する第2ピンショルダ面を含み、
前記第1管本体は、前記第1管本体の外周に形成される環状の第1マーキング溝を含む、ねじ継手。 - 請求項1に記載のねじ継手であって、
前記第2管本体は、前記第2管本体の外周に形成される環状の第2マーキング溝を含み、
前記第1マーキング溝は、前記第2マーキング溝の幅よりも狭い幅を有する、ねじ継手。 - 請求項2に記載のねじ継手であって、
前記第1ボックスはさらに、前記第1ボックスの開口端部に形成され、前記第1管本体の外周面と対向しかつ外周面から離間する内周面を有する管状の第1リセスを含み、
前記第2ボックスはさらに、前記第2ボックスの開口端部に形成され、前記第2管本体の外周面と対向しかつ外周面から離間する内周面を有する管状の第2リセスを含む、ねじ継手。 - 請求項1~3のいずれか1項に記載のねじ継手であって、
前記第2ピンの雄ねじ及び前記第2ボックスの雌ねじのうちねじシールを構成する部分は、前記第1ピンの雄ねじ及び前記第1ボックスの雌ねじのうちねじシールを構成する部分のねじ径干渉量よりも小さいねじ径干渉量を有する、ねじ継手。 - 請求項1~4のいずれか1項に記載のねじ継手であって、
前記第1ピンの雄ねじ及び前記第1ボックスの雌ねじは、完全ねじと、前記第1管本体と前記完全ねじとの間に形成される不完全ねじとを含み、
前記第1ピン及び前記第1ボックスは、締結状態で、前記不完全ねじの全部又は一部で接着される、ねじ継手。 - 請求項1~5のいずれか1項に記載のねじ継手であって、
前記第1鋼管及び第2鋼管は、16インチを超える外径を有する、ねじ継手。 - 第1鋼管と、
前記第1鋼管及び第2鋼管を互いに連結するためのカップリングとを備え、
前記第1鋼管は、
第1管本体と、
前記第1管本体と連続的に形成され、前記第1鋼管の先端部に形成される管状の第1ピンとを含み、
前記カップリングは、
前記第1ピンが挿入されて前記第1ピンと締結される管状の第1ボックスと、
前記第1ボックスの反対側に形成され、前記第2鋼管の第2ピンが挿入されて前記第2ピンと締結される管状の第2ボックスとを含み、
前記第1ピンは、前記ピンの外周に形成される雄ねじを含み、
前記第1ボックスは、前記雄ねじに対応し、前記ボックスの内周に形成される雌ねじを含み、
前記雄ねじ及び前記雌ねじは、台形ねじであり、かつ、テーパねじであり、
締結状態で前記雄ねじ及び前記雌ねじの少なくとも一部はねじシールを構成し、
前記雄ねじは、
雄ねじ山面と、
雄ねじ底面と、
前記ピンの先端に近い側に形成される雄ねじスタビング面と、
前記ピンの先端から遠い側に形成される雄ねじロード面とを含み、
前記雄ねじスタビング面は、
前記鋼管の管軸から遠い側に形成され、-10~15度のスタビング角を有する第1雄ねじスタビング段と、
前記管軸に近い側に形成され、20~60度のスタビング角を有する第2雄ねじスタビング段とを有し、
前記第2雄ねじスタビング段は、前記雄ねじの高さの20~60%の高さを有し、
前記雌ねじは、
前記雄ねじ底面と対向する雌ねじ山面と、
前記雄ねじ山面と対向する雌ねじ底面と、
前記雄ねじスタビング面と対向する雌ねじスタビング面と、
前記雄ねじロード面と対向する雌ねじロード面とを含み、
前記雌ねじスタビング面は、
前記管軸から遠い側に形成され、前記第1雄ねじスタビング段のスタビング角と同じスタビング角を有する第1雌ねじスタビング段と、
前記管軸に近い側に形成され、前記第2雄ねじスタビング段のスタビング角と同じスタビング角を有する第2雌ねじスタビング段とを有し、
前記第1ピンはさらに、前記第1ピンの先端に形成される第1ピンショルダ面を含み、
前記第1管本体は、前記第1管本体の外周に形成される環状の第1マーキング溝を含み、
前記第1ボックスの開口端は前記第1マーキング溝の幅内に位置付けられる、パイプアセンブリ。 - 請求項7に記載のパイプアセンブリであって、
前記第1ボックスはさらに、前記第1ボックスの開口端部に形成され、前記第1管本体の外周面と対向しかつ外周面から離間する内周面を有する管状の第1リセスを含む、パイプアセンブリ。 - 請求項7又は8に記載のパイプアセンブリであって、
前記第1ピンの雄ねじ及び前記第1ボックスの雌ねじは、完全ねじと、前記第1管本体と前記完全ねじとの間に形成される不完全ねじとを含み、
前記第1ピン及び前記第1ボックスは締結状態で前記不完全ねじの全部又は一部で接着される、パイプアセンブリ。 - 請求項7~9のいずれか1項に記載のパイプアセンブリであって、
前記第1鋼管は、16インチを超える外径を有する、パイプアセンブリ。
Priority Applications (17)
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CN202080011492.8A CN113396300A (zh) | 2019-03-27 | 2020-03-03 | 钢管用螺纹接头 |
BR112021011240-5A BR112021011240A2 (pt) | 2019-03-27 | 2020-03-03 | Conexão roscada para tubo de aço |
CN202310008281.4A CN115875520A (zh) | 2019-03-27 | 2020-03-03 | 钢管用螺纹接头 |
EA202192335A EA202192335A1 (ru) | 2019-03-27 | 2020-03-03 | Резьбовое соединение для стальной трубы |
MX2021010824A MX2021010824A (es) | 2019-03-27 | 2020-03-03 | Conexion roscada para tubo de acero. |
AU2020247986A AU2020247986B2 (en) | 2019-03-27 | 2020-03-03 | Threaded connection for steel pipe |
CA3130428A CA3130428C (en) | 2019-03-27 | 2020-03-03 | Threaded connection for steel pipe |
JP2021508901A JP7173295B2 (ja) | 2019-03-27 | 2020-03-03 | 鋼管用ねじ継手 |
US17/421,500 US11703163B2 (en) | 2019-03-27 | 2020-03-03 | Threaded connection for steel pipe |
CN202310008270.6A CN115854135A (zh) | 2019-03-27 | 2020-03-03 | 钢管用螺纹接头 |
EP20779822.4A EP3951229B1 (en) | 2019-03-27 | 2020-03-03 | Threaded connection for steel pipe |
EP22186227.9A EP4108969A1 (en) | 2019-03-27 | 2020-03-03 | Threaded coupling for steel pipe |
CN202310008287.1A CN115854136A (zh) | 2019-03-27 | 2020-03-03 | 钢管用螺纹接头和管组件 |
JP2022169877A JP7421146B2 (ja) | 2019-03-27 | 2022-10-24 | 鋼管用ねじ継手 |
AU2023200341A AU2023200341B2 (en) | 2019-03-27 | 2023-01-23 | Threaded connection for steel pipe |
AU2023200342A AU2023200342B2 (en) | 2019-03-27 | 2023-01-23 | Threaded connection for steel pipe |
AU2023200340A AU2023200340B2 (en) | 2019-03-27 | 2023-01-23 | Threaded connection for steel pipe |
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US20230399898A1 (en) * | 2022-06-14 | 2023-12-14 | Gb Connections Llc | Coupled Connection for Tight Clearance Casing Strings in Oil and Gas Wells |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4641410A (en) | 1984-03-22 | 1987-02-10 | Vallourec | Method and apparatus for making a joint for steel tubes |
US5233742A (en) | 1992-06-29 | 1993-08-10 | Gray N Monroe | Method and apparatus for controlling tubular connection make-up |
JPH06109173A (ja) * | 1992-09-28 | 1994-04-19 | Nippon Steel Corp | 油井管継手 |
JP2001214437A (ja) * | 2000-01-31 | 2001-08-07 | Hirose & Co Ltd | 管体の連結方法及び連結構造 |
WO2001086185A1 (fr) | 2000-05-10 | 2001-11-15 | Sumitomo Metal Industries, Ltd. | Procede de serrage pour joint de tuyaux |
JP2004169812A (ja) * | 2002-11-20 | 2004-06-17 | Osaka Gas Co Ltd | ねじ込み式管継手 |
WO2005040657A2 (en) | 2003-10-01 | 2005-05-06 | Vallourec Mannesmann Oil & Gas France | A tubular component provided with mutually oriented threaded elements, and a method for producing it |
WO2008029957A1 (en) | 2006-09-07 | 2008-03-13 | Sumitomo Metal Industries, Ltd. | Method for evaluating fastening state of threaded joint of pipes or tubes and method for fastening threaded joint of pipes or tubes using the method |
JP2013512393A (ja) * | 2009-11-30 | 2013-04-11 | ヴァルレック・マンネスマン・オイル・アンド・ガス・フランス | ねじ結合 |
WO2018052141A1 (ja) | 2016-09-16 | 2018-03-22 | 新日鐵住金株式会社 | ねじ継手 |
WO2018180218A1 (ja) | 2017-03-31 | 2018-10-04 | 新日鐵住金株式会社 | 鋼管用ねじ継手 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1942518A (en) * | 1933-06-22 | 1934-01-09 | Pittsburgh Steel Co | Pipe joint |
LU51742A1 (ja) * | 1966-08-10 | 1968-03-25 | ||
US4549754A (en) * | 1983-06-20 | 1985-10-29 | Reed Tubular Products Company | Tool joint |
JPS619173A (ja) | 1984-06-19 | 1986-01-16 | Mitsubishi Electric Corp | 電力スイツチング回路 |
US4962579A (en) * | 1988-09-02 | 1990-10-16 | Exxon Production Research Company | Torque position make-up of tubular connections |
AU778387B2 (en) * | 1999-09-13 | 2004-12-02 | Swagelok Company | Tube fitting with indicating means |
US6682101B2 (en) | 2002-03-06 | 2004-01-27 | Beverly Watts Ramos | Wedgethread pipe connection |
US6848724B2 (en) * | 2002-08-12 | 2005-02-01 | Grant Prideco, Inc. | Thread design for uniform distribution of makeup forces |
US7416374B2 (en) * | 2003-01-29 | 2008-08-26 | Grant Prideco, L.P. | Fast make-up fatigue resistant rotary shouldered connection |
ATE456765T1 (de) * | 2004-05-28 | 2010-02-15 | Ashirvad Pipes Private Ltd | Gewinderohrverbindungskupplung mit drahtverriegelungssystem |
JP4941058B2 (ja) * | 2007-04-02 | 2012-05-30 | 住友金属工業株式会社 | 鋼管用ねじ継手 |
US20110101684A1 (en) * | 2009-11-04 | 2011-05-05 | Gandy Technologies Corporation | Threaded Pipe Connection with a Pressure Energized Flex Seal |
US8668232B2 (en) * | 2011-12-09 | 2014-03-11 | Tenaris Connections Limited | Threaded connection with improved root thread profile |
US9874058B2 (en) * | 2014-07-31 | 2018-01-23 | Baker Hughes, A Ge Company, Llc | Fatigue resistant thread profile with combined curve rounding |
BR112018072626B1 (pt) * | 2016-09-16 | 2022-07-26 | Vallourec Oil And Gas France | Conexão roscada |
CN109113591A (zh) | 2017-06-25 | 2019-01-01 | 西安瑞杰油田物资实业开发有限公司 | 一种油井管的螺纹接头 |
CN208152958U (zh) * | 2018-05-14 | 2018-11-27 | 陆金福 | 一种钢管的螺纹连接处的密封结构 |
CN210134816U (zh) * | 2019-04-04 | 2020-03-10 | 靖江特殊钢有限公司 | 一种金属环密封的石油套管接头 |
-
2020
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Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4641410A (en) | 1984-03-22 | 1987-02-10 | Vallourec | Method and apparatus for making a joint for steel tubes |
US5233742A (en) | 1992-06-29 | 1993-08-10 | Gray N Monroe | Method and apparatus for controlling tubular connection make-up |
JPH06109173A (ja) * | 1992-09-28 | 1994-04-19 | Nippon Steel Corp | 油井管継手 |
JP2001214437A (ja) * | 2000-01-31 | 2001-08-07 | Hirose & Co Ltd | 管体の連結方法及び連結構造 |
WO2001086185A1 (fr) | 2000-05-10 | 2001-11-15 | Sumitomo Metal Industries, Ltd. | Procede de serrage pour joint de tuyaux |
JP2004169812A (ja) * | 2002-11-20 | 2004-06-17 | Osaka Gas Co Ltd | ねじ込み式管継手 |
WO2005040657A2 (en) | 2003-10-01 | 2005-05-06 | Vallourec Mannesmann Oil & Gas France | A tubular component provided with mutually oriented threaded elements, and a method for producing it |
WO2008029957A1 (en) | 2006-09-07 | 2008-03-13 | Sumitomo Metal Industries, Ltd. | Method for evaluating fastening state of threaded joint of pipes or tubes and method for fastening threaded joint of pipes or tubes using the method |
JP2013512393A (ja) * | 2009-11-30 | 2013-04-11 | ヴァルレック・マンネスマン・オイル・アンド・ガス・フランス | ねじ結合 |
WO2018052141A1 (ja) | 2016-09-16 | 2018-03-22 | 新日鐵住金株式会社 | ねじ継手 |
WO2018180218A1 (ja) | 2017-03-31 | 2018-10-04 | 新日鐵住金株式会社 | 鋼管用ねじ継手 |
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AU2020247986A1 (en) | 2021-06-24 |
CA3130428A1 (en) | 2020-10-01 |
EA202192335A1 (ru) | 2021-12-16 |
EP3951229A1 (en) | 2022-02-09 |
CN115875520A (zh) | 2023-03-31 |
CA3205790A1 (en) | 2020-10-01 |
AU2023200342A1 (en) | 2023-02-23 |
EP3951229B1 (en) | 2024-04-03 |
JP2022191473A (ja) | 2022-12-27 |
AU2023200340B2 (en) | 2024-04-04 |
CN113396300A (zh) | 2021-09-14 |
AU2023200340A1 (en) | 2023-02-23 |
AU2020247986B2 (en) | 2023-02-16 |
JP7421146B2 (ja) | 2024-01-24 |
AU2023200341A1 (en) | 2023-02-23 |
JPWO2020195621A1 (ja) | 2021-10-14 |
EP3951229A4 (en) | 2022-07-06 |
US20220082189A1 (en) | 2022-03-17 |
CA3130428C (en) | 2023-10-24 |
BR112021011240A2 (pt) | 2021-09-28 |
AU2023200342B2 (en) | 2024-04-04 |
CA3205796A1 (en) | 2020-10-01 |
AR118459A1 (es) | 2021-10-06 |
CN115854135A (zh) | 2023-03-28 |
MX2021010824A (es) | 2021-10-01 |
US11703163B2 (en) | 2023-07-18 |
JP7173295B2 (ja) | 2022-11-16 |
EP3951229C0 (en) | 2024-04-03 |
CN115854136A (zh) | 2023-03-28 |
CA3205801A1 (en) | 2020-10-01 |
EP4108969A1 (en) | 2022-12-28 |
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