WO2014092605A2 - Sealed threaded joint for casing pipes (versions) - Google Patents
Sealed threaded joint for casing pipes (versions) Download PDFInfo
- Publication number
- WO2014092605A2 WO2014092605A2 PCT/RU2013/001085 RU2013001085W WO2014092605A2 WO 2014092605 A2 WO2014092605 A2 WO 2014092605A2 RU 2013001085 W RU2013001085 W RU 2013001085W WO 2014092605 A2 WO2014092605 A2 WO 2014092605A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thread
- male
- joint
- bearing end
- female elements
- Prior art date
Links
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- IHPYMWDTONKSCO-UHFFFAOYSA-N 2,2'-piperazine-1,4-diylbisethanesulfonic acid Chemical compound OS(=O)(=O)CCN1CCN(CCS(O)(=O)=O)CC1 IHPYMWDTONKSCO-UHFFFAOYSA-N 0.000 description 1
- 239000007990 PIPES buffer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—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
-
- 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 claimed invention refers to sealed threaded casing pipes joints and can be applied for joining of the casing string elements used in construction and operation of gas and oil wells.
- Gas and oil well casings are operated under complicated conditions in aggressive media and under sufficient multidirectional mechanical loads. Due to the abovementioned the major requirements to the casing are its durability at multiple makes-up and breaks-out and within long operation, and preservation of high sealability under high mechanical loads.
- the threaded casing pipes joint described in the document (1) has a following shortage: poor make-up features - complicated inspection of the given interference and torque values during make-up process.
- the difficulty with appropriate interference value set up results in not shouldered or over torqued state of the joint.
- the joint which is not shouldered loses its sealability sufficiently.
- the intercontacting surfaces might get injured, which results in decrease of the joint durability at its multiple makes and breaks;
- the given joint doesn't ensure flushness of the casing string which prevents from free of jamming passing of the underground equipment down the hole during the process of construction and operation of the well, and results in flow disturbance of the machining medium passing inside the string which creates high pressure local zones.
- the given engineering solution (1) is taken as a nearest analogue of the claimed invention.
- the claimed invention is targeted at creation of the threaded casing pipes joint with high sealabiiity features, improved make-up specifications and flushness providing simplicity of its manufacture, operation and possibility to make-up the given joint with other joints with buttress trapezoidal tapered threads like Buttress, OTTM, OTTG, VARM without crossovers.
- Sealed threaded casing pipes joint consists of the male and female elements with the trapezoidal tapered threads with 1 :16 taper performed correspondingly on the external and internal surfaces of its ends.
- Load flank inclination angle of the thread profile of the male and female elements is 2 - 4° to the thread axes normal line
- lead-in flank inclination angle of the thread profile is 9 - 1 1° to the thread axes normal line.
- the joint is performed with inner sealing unit, made by intercontacting bearing end surfaces produced on the male and female elements and located perpendicularly to the thread axis line.
- the bearing end length of the male element is 6,9 - 100,3 mm.
- FIG. 1 shows made-up threaded casing pipes joint and thread profile.
- Figure 2 shows made-up threaded casing pipes joint and inner sealing unit.
- Sealed threaded casing pipes joint consists of the male (2) and female (1) elements with the trapezoidal tapered threads (3) performed correspondingly on the external and internal surfaces of its ends.
- the trapezoidal tapered threads (3) on the male (2) and female (1) elements are performed with 1 :16 taper. Performance of the threads (3) with 1 : 16 taper provides for high level of locking mating engagement in a shouldered state and for possibility of optimal taking by the joint of bending and tensile loads affecting it during its operation.
- Lead-in flank (6) inclination angle of the thread (3) profile of the male (2) and female (1) elements is 2 - 4° to the thread axes normal line
- load flank (7) inclination angle of the thread (3) profile is 9 - 1 1° to the thread axes normal line.
- the thread axes normal line is a determination of a line perpendicular to the thread axis line.
- Performance of the lead-in flank (6) inclination angle of the thread (3) profile equal to 9-1 1° to the thread axes normal line stabilizes the location of the male (2) element relative to the female (1) element at the beginning of make-up process, which prevents the joint from jamming and from appearance of damaging (galling) on the thread (3) surfaces and provides for possibility of multiple makes and breaks of the joint preserving its high sealability properties.
- Performance of the load flank (7) inclination angle of the thread (3) profile equal to 2-4° to the thread axes normal line prevents from thread (3) disengagement under sufficient tensile load (sealability loss) affecting the joint under the weight of the string run in wells.
- Another version of the claimed invention performance is characterized by performance of the lead-in flank (6) inclination angle of the thread (3) profile of the male (2) and female (1) elements equal to 23-25° to the thread axes normal line and performance of the thread profile load flank (7) that can vary from -3 to -5° to the thread axes normal line.
- the thread (3) profile load flank (7) negative inclination angle (-3 to -5°) prevents from disengagement of the male (2) and female (1) elements thread turns under considerable tensile loads. Besides that decrease of the preload value is achieved comparing to constructions of threads with positive load flank inclination angle, which provides for high durability of the joint and improved operational features under high loads.
- Performance of the lead-in flank (6) inclination angle of the thread (3) profile equal to 23-25° to the thread axes normal line makes the joint make-up process easier and increases its durability at multiple makes and breaks.
- the joint is designed with an inner sealing unit (4), formed by intercontacting bearing end surfaces (5).
- the mentioned bearing end surfaces (5) of the male (2) and female (1) elements are located perpendicularly to the thread axis line.
- Presence of the sealing unit (4) of the joint helps to increase its sealability due to bearing end surfaces (5) intercontacting with considerable contact stresses provide for plastic strains appearance on the surfaces (5) and produce a "metal- to-metal" sealing during make-up process, and consequently - high sealability of the joint under multidirectional loads.
- Trapezoidal tapered threads (3) are characterized by absence of the gap on the male (2) and female (1) elements thread profile crests (8) (thread profile is designed equally high).
- the bearing end (L) length of the male (2) element is 6,9 - 100,3 mm.
- the bearing end (L) length is therein a distance from the bearing end face
- male (2) element bearing end length (L) is chosen from the range depending on the gap width ( ⁇ 1) on the thread profile (3) lead-in flank
- the female (1) element Upon demand of GOSTs acting in this pertinent art, the female (1) element shall always be produced of the material with stronger grade than the male (2) element. Therefore all calculations for possible deformations of the bearing end surfaces (5) are made for the male element (2).
- buttress trapezoidal tapered threads (3) have structural gap ( ⁇ 1) on the thread lead-in flanks (6), necessary for easy, free of jamming makeup of this type of threads.
- the gap on the thread lead-in flanks (6) taken out and the lead-in flanks (6) undertake the compression, preventing the male element (2) bearing end surface (5) deformation moving from the area of plastic strain to the area of elastic strain.
- the larger is the gap ( ⁇ 1) on the thread (3) lead-in flanks (6), the larger bearing end length (L) will be required for preventing the male element (2) bearing end surface (5) deformation moving to the area of elastic strain.
- male element (2) bearing end with length (L) less than 6,9 mm will result in male element (2) surface (5) deformation moving from the area of plastic strain to the area of elastic strain, in irreversible male element (2) surface (5) damage, in appearance of galling, which will cause decrease of the joint wear resistance and its sealability decrease.
- the claimed joint consisting of the male and female elements is produced with trapezoidal tapered threads with 1 :16 taper.
- the thread profile load flank inclination angle is 3° to the thread axis normal line and the thread profile lead-in flank inclination angle is 10° to the thread axis normal line.
- the thread lead is 5,08 mm with the thread passage diameter 245 mm and wall thickness 8,94 mm.
- the male element bearing end length is chosen from the range depending on the gap width on the thread profile lead-in flank and on the male element yield point (see table 1 ).
- the claimed joint consisting of the male and female elements is produced with trapezoidal tapered threads (3) with 1 : 16 taper.
- the thread profile load flank inclination angle is -4° to the thread axis normal line and the thread profile lead-in flank inclination angle is 24° to the thread axis normal line.
- the thread lead is 5,08 mm with the thread passage diameter 245 mm and wall thickness 8,94 mm.
- the joint is designed with an inner sealing unit formed by intercontacting bearing end surfaces located perpendicularly to the thread axes line.
- the male element bearing end length is chosen from the range depending on the gap width on the thread profile lead-in flank and on the male element yield point in the same manner as the example 1 (see table 1).
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The joint consists of the male and female elements with trapezoidal tapered threads with 1:16 taper performed correspondingly on the external and internal surfaces of its ends. Load flank inclination angle of the thread profile of the male and female elements is 2-4 to the thread axes normal line and lead-in flank inclination angle of the thread profile is 9-11 to the thread axes normal line. The joint is performed with inner sealing unit, formed by intercontacting bearing end surfaces located perpendicularly to the thread axis line. The bearing end length of the male element is 6,9-100,3 mm. High sealability of the joint under sufficient multidirectional loads applied is preserved as well as high durability of the joint, of its improved make-up features, internal casing pipes string flushness.
Description
SEALED THREADED JOINT FOR CASING PIPES (VERSIONS)
The claimed invention refers to sealed threaded casing pipes joints and can be applied for joining of the casing string elements used in construction and operation of gas and oil wells.
Gas and oil well casings are operated under complicated conditions in aggressive media and under sufficient multidirectional mechanical loads. Due to the abovementioned the major requirements to the casing are its durability at multiple makes-up and breaks-out and within long operation, and preservation of high sealability under high mechanical loads.
At state of the art we know a threaded joint of casing pipes consisting of male and female elements the ends of which have surfaces with external and internal trapezoidal tapered threads (GOST 51906-2002, pg. 17-19 (1)).
The threaded casing pipes joint described in the document (1) has a following shortage: poor make-up features - complicated inspection of the given interference and torque values during make-up process. The difficulty with appropriate interference value set up results in not shouldered or over torqued state of the joint. The joint which is not shouldered loses its sealability sufficiently. At a state of overtorque the intercontacting surfaces might get injured, which results in decrease of the joint durability at its multiple makes and breaks;
Besides that the required sealability of the joint cannot be provided for the presence of the structural and engineering gaps in the trapezoidal tapered threads.
Besides that the given joint doesn't ensure flushness of the casing string which prevents from free of jamming passing of the underground equipment down the hole during the process of construction and operation of the well, and results in flow disturbance of the machining medium passing inside the string which creates high pressure local zones.
The given engineering solution (1) is taken as a nearest analogue of the claimed invention.
The claimed invention is targeted at creation of the threaded casing pipes joint with high sealabiiity features, improved make-up specifications and flushness providing simplicity of its manufacture, operation and possibility to make-up the given joint with other joints with buttress trapezoidal tapered threads like Buttress, OTTM, OTTG, VARM without crossovers.
Technical effect provided by the claimed invention is that of high sealabiiity of the joint under sufficient multidirectional loads (tension, compression, bending), of high durability of the joint, of its improved make-up features and of the internal casing pipes string flushness.
Sealed threaded casing pipes joint consists of the male and female elements with the trapezoidal tapered threads with 1 :16 taper performed correspondingly on the external and internal surfaces of its ends. Load flank inclination angle of the thread profile of the male and female elements is 2 - 4° to the thread axes normal line, and lead-in flank inclination angle of the thread profile is 9 - 1 1° to the thread axes normal line. The joint is performed with inner sealing unit, made by intercontacting bearing end surfaces produced on the male and female elements and located perpendicularly to the thread axis line. The bearing end length of the male element is 6,9 - 100,3 mm.
Another version of the claimed invention performance is a sealed threaded casing pipes joint consisting of the male and female elements with the trapezoidal tapered threads with 1 : 16 taper performed correspondingly on the external and internal surfaces of its ends. Load flank inclination angle of the thread profile of the male and female elements is 3 - 5° to the thread axes normal line, and lead-in flank inclination angle of the thread profile is 23 - 25° to the thread axes normal line. The joint is performed with inner sealing unit, made by intercontacting bearing end surfaces produced on the male and female elements and located perpendicularly to the thread axis line. The bearing end length of the male element is 6,9 - 100,3 mm.
Figure 1 shows made-up threaded casing pipes joint and thread profile. Figure 2 shows made-up threaded casing pipes joint and inner sealing unit.
Sealed threaded casing pipes joint consists of the male (2) and female (1) elements with the trapezoidal tapered threads (3) performed correspondingly on the external and internal surfaces of its ends.
The trapezoidal tapered threads (3) on the male (2) and female (1) elements are performed with 1 :16 taper. Performance of the threads (3) with 1 : 16 taper provides for high level of locking mating engagement in a shouldered state and for possibility of optimal taking by the joint of bending and tensile loads affecting it during its operation.
Lead-in flank (6) inclination angle of the thread (3) profile of the male (2) and female (1) elements is 2 - 4° to the thread axes normal line, and load flank (7) inclination angle of the thread (3) profile is 9 - 1 1° to the thread axes normal line.
The thread axes normal line is a determination of a line perpendicular to the thread axis line.
Performance of the lead-in flank (6) inclination angle of the thread (3) profile equal to 9-1 1° to the thread axes normal line stabilizes the location of the male (2) element relative to the female (1) element at the beginning of make-up process, which prevents the joint from jamming and from appearance of damaging (galling) on the thread (3) surfaces and provides for possibility of multiple makes and breaks of the joint preserving its high sealability properties.
Performance of the load flank (7) inclination angle of the thread (3) profile equal to 2-4° to the thread axes normal line prevents from thread (3) disengagement under sufficient tensile load (sealability loss) affecting the joint under the weight of the string run in wells.
Besides that the above mentioned inclination angles of the thread (3) profile load flank (7) and lead-in flank (6) provide for possibility of the claimed joint to make-up with a wide range of other joints with trapezoidal tapered
threads, which means that the string elements can be assembled without special cross-overs.
Another version of the claimed invention performance is characterized by performance of the lead-in flank (6) inclination angle of the thread (3) profile of the male (2) and female (1) elements equal to 23-25° to the thread axes normal line and performance of the thread profile load flank (7) that can vary from -3 to -5° to the thread axes normal line.
The primary function of such a thread is possibility of taking tensile and bending loads during operation of the joint.
The thread (3) profile load flank (7) negative inclination angle (-3 to -5°) prevents from disengagement of the male (2) and female (1) elements thread turns under considerable tensile loads. Besides that decrease of the preload value is achieved comparing to constructions of threads with positive load flank inclination angle, which provides for high durability of the joint and improved operational features under high loads.
Performance of the lead-in flank (6) inclination angle of the thread (3) profile equal to 23-25° to the thread axes normal line makes the joint make-up process easier and increases its durability at multiple makes and breaks.
Besides that the above mentioned inclination angles of the thread profile (3) load flank (7) and lead-in flank (6) provide for possibility of the claimed joint to make-up with a wide range of other casing joints with trapezoidal threads, which means that the string elements can be assembled without special cross-overs.
The joint is designed with an inner sealing unit (4), formed by intercontacting bearing end surfaces (5). The mentioned bearing end surfaces (5) of the male (2) and female (1) elements are located perpendicularly to the thread axis line.
Presence of the sealing unit (4) of the joint helps to increase its sealability due to bearing end surfaces (5) intercontacting with considerable contact stresses provide for plastic strains appearance on the surfaces (5) and produce a "metal-
to-metal" sealing during make-up process, and consequently - high sealability of the joint under multidirectional loads.
Besides that, due to the inner sealing unit (4) presence and, consequently, to the presence of bearing end surfaces (5), a precise positioning of the male (2) and female (1) elements relative to each other is achieved as well as increased joint make-up torque value, precise setting of the specified interference value and torque value during the make-up process - that is make-up improved features, possibility of joint make-up procedure inspection. Besides that high resistance of the joint to compression and high torque appearing during the joint exploitation is achieved.
Internal flushness (string male element profile closeness) provided by presence of the inner sealing unit (4) in a joint, improves the service effectiveness of the joint.
Production of the male (2) and female (1) element bearing end surfaces (5) perpendicular to the thread axis line guarantees increased wear resistance of the joint. Trapezoidal tapered threads (3) are characterized by absence of the gap on the male (2) and female (1) elements thread profile crests (8) (thread profile is designed equally high). During make-up procedure of the joint containing bearing end surfaces (5) perpendicular to the thread axis line, when the bearing end surfaces (5) mate with each other and the joint is being further tightened, a vertical component of the effective force is absent which prevents thread profile crests (8) from damage, galling, and due to this, increases the joint wear resistance in general.
The bearing end (L) length of the male (2) element is 6,9 - 100,3 mm.
The bearing end (L) length is therein a distance from the bearing end face
(5) of the male (2) element to the end of the first thread (3) turn chamfer of the male (2) element in the shouldered state (fig. 2).
In every case the male (2) element bearing end length (L) is chosen from the range depending on the gap width (Δ1) on the thread profile (3) lead-in flank
(6) (direct relation) and on the male (2) element yield point (inverse relation).
During the make-up process bearing end surfaces (5) mate and, as the joint is shouldering, get deformed at the area of plastic strains. It is important to provide the surface strain remaining in the area of plastic strains and not moving to the area of elastic strains, which cause damages of the surfaces (5) and result in appearance of galling, which leads to decrease of the joint wear resistance during multiple make-up and break-out procedures.
Upon demand of GOSTs acting in this pertinent art, the female (1) element shall always be produced of the material with stronger grade than the male (2) element. Therefore all calculations for possible deformations of the bearing end surfaces (5) are made for the male element (2).
Primarily prevention, of the male element (2) bearing end surface (5) deformation movement from the area of plastic strain to the area of elastic strain depends on yield point of the material which is used for male element (2) manufacture. The higher is the grade of the male element (2) material and sequently - higher is the yield, - the lesser length of the bearing end (L) will provide the prevention of such a movement.
Besides that, buttress trapezoidal tapered threads (3) have structural gap (Δ1) on the thread lead-in flanks (6), necessary for easy, free of jamming makeup of this type of threads. During the make-up process after the bearing end surfaces (5) mate which start at that moment to take compression load and correspondingly get deformed, the gap on the thread lead-in flanks (6) taken out and the lead-in flanks (6) undertake the compression, preventing the male element (2) bearing end surface (5) deformation moving from the area of plastic strain to the area of elastic strain. This means the larger is the gap (Δ1) on the thread (3) lead-in flanks (6), the larger bearing end length (L) will be required for preventing the male element (2) bearing end surface (5) deformation moving to the area of elastic strain.
Production of the male element (2) bearing end with length (L) less than 6,9 mm will result in male element (2) surface (5) deformation moving from the area of plastic strain to the area of elastic strain, in irreversible male element (2)
surface (5) damage, in appearance of galling, which will cause decrease of the joint wear resistance and its sealability decrease.
Production of the male element (2) bearing end with length (L) larger than 100,3 mm is not reasonable as the abovementioned length (L) guarantees location of the surface (5) deformation in the area of plastic strain and making the length (L) larger than 100,3 mm will only make the joint production process more complicated.
Examples of realization of the invention.
1. The claimed joint consisting of the male and female elements is produced with trapezoidal tapered threads with 1 :16 taper. The thread profile load flank inclination angle is 3° to the thread axis normal line and the thread profile lead-in flank inclination angle is 10° to the thread axis normal line. The thread lead is 5,08 mm with the thread passage diameter 245 mm and wall thickness 8,94 mm. The male element bearing end length is chosen from the range depending on the gap width on the thread profile lead-in flank and on the male element yield point (see table 1 ).
Table 1
2. The claimed joint consisting of the male and female elements is produced with trapezoidal tapered threads (3) with 1 : 16 taper. The thread profile load flank inclination angle is -4° to the thread axis normal line and the thread profile lead-in flank inclination angle is 24° to the thread axis normal line. The
thread lead is 5,08 mm with the thread passage diameter 245 mm and wall thickness 8,94 mm. The joint is designed with an inner sealing unit formed by intercontacting bearing end surfaces located perpendicularly to the thread axes line. The male element bearing end length is chosen from the range depending on the gap width on the thread profile lead-in flank and on the male element yield point in the same manner as the example 1 (see table 1).
The trials of the joint conducted as it is specified in the example 2 showed the same results as the trials of the example 1.
Claims
1. Sealed threaded casing pipes joint consisting of the male and female elements with trapezoidal tapered threads performed correspondingly on the external and internal surfaces of its ends characterized in that trapezoidal tapered threads of the male and female elements are produced with 1 :16 taper, load flank inclination angle of the thread profile of the male and female elements is 2 - 4° to the thread axes normal line and lead-in flank inclination angle of the thread profile is 9 - 1 1° to the thread axes normal line, the joint is executed with inner sealing unit, formed by intercontacting bearing end surfaces produced on the male and female elements and located perpendicularly to the thread axis line, the bearing end length of the male element is 6,9 - 100,3 mm.
2. Sealed threaded casing pipes joint consisting of the male and female elements with trapezoidal tapered threads performed correspondingly on the external and internal surfaces of its ends characterized in that the trapezoidal tapered threads of the male and female elements are produced with 1 : 16 taper, load flank inclination angle of the thread profile of the male and female elements is -3 - -5° to the thread axes normal line and lead-in flank inclination angle of the thread profile is 23 - 25° to the thread axes normal line, the joint is executed with inner sealing unit, formed by intercontacting bearing end surfaces produced on the male and female elements and located perpendicularly to the thread axis line, the bearing end length of the male element is 6,9 - 100,3 mm.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EA201500518A EA031821B1 (en) | 2012-12-13 | 2013-12-03 | Sealed threaded joint for casing pipes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2012153851 | 2012-12-13 | ||
RU2012153851/06A RU2504710C1 (en) | 2012-12-13 | 2012-12-13 | Sealed threaded connection of casing pipes (versions) |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2014092605A2 true WO2014092605A2 (en) | 2014-06-19 |
WO2014092605A3 WO2014092605A3 (en) | 2014-08-07 |
Family
ID=49948033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/RU2013/001085 WO2014092605A2 (en) | 2012-12-13 | 2013-12-03 | Sealed threaded joint for casing pipes (versions) |
Country Status (3)
Country | Link |
---|---|
EA (1) | EA031821B1 (en) |
RU (1) | RU2504710C1 (en) |
WO (1) | WO2014092605A2 (en) |
Cited By (2)
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JP2015055296A (en) * | 2013-09-12 | 2015-03-23 | Jfeスチール株式会社 | Screw joint for oil well pipe with superior anti-seizure characteristics |
WO2022005320A1 (en) * | 2020-06-29 | 2022-01-06 | Публичное акционерное общество "Трубная металлургическая компания" (ПАО "ТМК") | Threaded joint for production tubing |
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RU2604461C1 (en) | 2015-08-21 | 2016-12-10 | Открытое акционерное общество "Первоуральский новотрубный завод" | Threaded pipe connection |
RU2616950C2 (en) * | 2016-02-17 | 2017-04-18 | Открытое акционерное общество "Завод бурового оборудования" | Double-shouldered threaded joint of drill pipes |
RU2639343C1 (en) * | 2016-08-29 | 2017-12-21 | Публичное акционерное общество "Трубная металлургическая компания" (ПАО "ТМК") | Threaded joint of casing pipes |
RU201784U1 (en) * | 2020-04-28 | 2021-01-12 | Общество с ограниченной ответственностью "Производственная Компания "Опора-пром-ойл" | Threaded connection of casing pipes |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1572423A3 (en) * | 1984-08-30 | 1990-06-15 | Хантинг Ойлфилд Сервисиз (Юк) Лимитед (Фирма) | Threaded joint |
FR2761450B1 (en) * | 1997-03-27 | 1999-05-07 | Vallourec Mannesmann Oil & Gas | THREADED JOINT FOR TUBES |
CN1934386A (en) * | 2004-03-31 | 2007-03-21 | Nkk钢管株式会社 | Double shoulder tool joint |
JP2007205361A (en) * | 2004-08-27 | 2007-08-16 | Sumitomo Metal Ind Ltd | Steel pipe screwed joint |
CA2725126C (en) * | 2005-03-02 | 2012-12-11 | Vallourec Mannesmann Oil & Gas France | Drill stem connection |
JP4930647B1 (en) * | 2010-06-30 | 2012-05-16 | Jfeスチール株式会社 | Threaded joints for pipes |
CN101881139B (en) * | 2010-07-07 | 2015-07-08 | 天津天钢石油专用管制造有限公司 | Thread connector of petroleum gas industrial tube |
JP5849749B2 (en) * | 2011-02-28 | 2016-02-03 | Jfeスチール株式会社 | Threaded joints for pipes |
-
2012
- 2012-12-13 RU RU2012153851/06A patent/RU2504710C1/en active
-
2013
- 2013-12-03 EA EA201500518A patent/EA031821B1/en active IP Right Revival
- 2013-12-03 WO PCT/RU2013/001085 patent/WO2014092605A2/en active Application Filing
Non-Patent Citations (1)
Title |
---|
GOST R 51906-2002, 2002, pages 17 - 19 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015055296A (en) * | 2013-09-12 | 2015-03-23 | Jfeスチール株式会社 | Screw joint for oil well pipe with superior anti-seizure characteristics |
WO2022005320A1 (en) * | 2020-06-29 | 2022-01-06 | Публичное акционерное общество "Трубная металлургическая компания" (ПАО "ТМК") | Threaded joint for production tubing |
Also Published As
Publication number | Publication date |
---|---|
EA031821B1 (en) | 2019-02-28 |
RU2504710C1 (en) | 2014-01-20 |
EA201500518A1 (en) | 2016-02-29 |
WO2014092605A3 (en) | 2014-08-07 |
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