• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SU1836536A3
    申请号:SU894614593
    申请日:1989-07-27
    公开日:1993-08-23
    发明作者:Krug Gerkhard
    申请人:Mannesmann Ag；
    IPC主号:
    专利说明:

    The invention relates to the drilling of deep wells.
    The aim of the invention is to improve the reliability of the drill pipe in deep drilling.
    Figure 1 shows a part of the cross-section of a drill pipe with a welded connecting part - a nipple; Fig. 2 is a similar image to Fig. 1 of the other end of the drill pipe with a connecting part - a sleeve; on.fig.Z - a variant of the coupling with a 90-degree shoulder.
    Shown in figure 1 part of the drill pipe 1 has a connecting end-nipple 2. The nipple and the pipe are connected by a weld 3, for example, by friction welding. The pipe 1 has an upset 4 at its end, and figure 1 shows an example when the upset is directed radially inward and outward. The axial extent of the outer upset is shorter than the axial extent of the inner upset
    6. Section 7 of the undeformed body of the pipe 1 has a nominal bore with a diameter indicated by the position 8. Diameter 9 us-
    1836536 AZ
    1836536 4 fishing pass in section 10 of landing 4 is less than the diameter 8. Between the cylindrical sections 7 and 10 there is an intermediate section 11, which is a transition between the cylindrical sections 5. In this intermediate section, the nominal bore in the direction of the weld 3 is continuously reduced, and half of the difference between the largest and smallest nominal bore is shown in Fig. 1 by 10 position 12. The length 13 of the intermediate section 11 is more than 10 times the difference between diameters 8 and 9, the adjacent sections 7 and 1Θ. The transition from the section 7 of the undeformed pipe body to the intermediate section 11 is strongly rounded, and the radius of curvature 14 is at least 300 mm. The nipple 2 has a cylindrical section 17 starting at the weld seam 3 and extending to the beginning of 15 thickening 16 for a machine key 20, the diameter 9 of the nominal bore of which is equal to the nominal bore diameter of the upset 4. It adjoins in the direction of the tapered thread 18, the intermediate section 19 decreases - 25 rocking conditional bore. The length 20 of the intermediate section 19 is more than three times the difference between the diameters 9 and 21, the adjacent cylindrical section 17 and the section 22- 30 of the conditional passage of the nipple 2 under the thread 18. Half of this difference is shown in Fig. 1 at 23. This the intermediate section 19 in the area of the thickening 16 for the machine key. 35
    In figure 1, the implementation of the intermediate section 19 is shown in the form of a surface curved along an arc of a circle, which tangentially passes into the cylindrical section 17 facing the weld 3. 4 θ The radius 24 of this surface is at least 150 mm. The area of the beginning 15 of the thickening 16 under the machine key has a standard slope at an angle of 30 degrees.
    Fig. 2 shows a section similar to Fig. 1 45 of the other end of the drill pipe, where a coupling 25 is welded as a connecting end.
    Coupling 25 is connected to pipe 1 by means of a weld seam 26, made, for example, by friction welding.
    The pipe 1 has an upset 27 at its end, similar to the upset 4 at the other end of the pipe. The sleeve 25 has a cylindrical section 28 extending from the weld 26 to 55 of the tapered thread 29. The diameter 9 of the nominal bore of the sleeve is equal to the diameter of the nominal bore of the upset 27. On the outer surface of the sleeve, a thickening 30 is made for the machine key 30. The initial section 31 of which has a standard slope with angle of 18 degrees.
    In Fig. 3 shows an embodiment of the end of the drill pipe with a welded sleeve 25. However, the initial section 32 of the thickening 30 for the power tool is made at an angle of 90 ° to the pipe axis. The sleeve 25 is connected to the pipe 1 by a weld seam 33. The sleeve 25 is welded, as in Fig. 2, along the upset 27, made similar to the upset 4 at the other end of the pipe. The sleeve 25 in the area of the weld has a cylindrical section 34, the nominal diameter 9 of which is equal to the nominal diameter of the upset 27. The cylindrical section 34 is adjoined in the direction of the tapered thread 35 by an intermediate section 36 with a decreasing nominal bore. Moreover, the end of this section is located before the beginning of the 90-degree section 32 of the thickening under the machine key, and thus a dangerous reduction in the cross-section is excluded. The length 37 of the intermediate section is more than 3 times the difference between the diameter 9 and the diameter 38 of the nominal bore 39 of the coupling. Half of this difference in Fig. 3 is shown at 40. In this embodiment, the intermediate section 36 is made in the form of a surface curved along an arc of a circle, which tangentially passes into the cylindrical section 34. The radius 41 of this curved surface is at least 150 mm.
    The design of the end of the drill pipe described in Fig. 1, during operation, makes it possible to increase the reliability of operation due to the fact that most of the protrusion, which increases the strength of the connection, is displaced to its non-practical part, it is sufficiently remote from the threaded section, but however, it is located in the area of thickening for the machine key where there is sufficient cross-section. Reliability during operation is also increased due to the fact that the transition sections are made in the form of surfaces curved along an arc of a circle, which tangentially passes into the cylindrical part. Due to this design, stress concentration is eliminated.When the clutch shown in Fig. 2 operates, no thickening is required in the area intended for the power key, since the cross-section in the critical area is sufficient and therefore the nominal diameter is preserved up to the threaded section. When the clutch is operating, having a 90-degree section for the machine key (Fig. 3), the proposed implementation of the intermediate section, as in the case of the nipple (Fig. 1), reduces the stress concentration and
    1836536 6 increases the reliability of the drill pipe. In addition, smooth transitions in the intermediate sections avoid the accumulation of residual flushing solution, which reduces the likelihood of corrosive damage and increases the reliability of operation.
    权利要求:
    Claims (10)
    [1]
    1. Drill pipe, including the upset ends of the pipe body with an axial length of 10 'of the outer upsetting is less than the inner one, welded to the pipe body along the upset ends of the nipple and coupling with tapered threads, with thickenings for a machine key and with a nominal diameter of 15 pass for a threaded a section smaller than the inner diameter of an undeformed pipe, a cylindrical section of a pin and a sleeve with a nominal bore at the welded seam equal to the nominal bore of the drill pipe 20 from its upset part, adjacent to the cylindrical section of the pin and the sleeve, an intermediate section with a decreasing towards the threaded section - 25 ku conditional passage, an intermediate section at the ends of the pipes between the undeformed and upset parts with condition-. ny passage, decreasing towards the weld, and a step on the ZR outer side of the coupling in the area of the transition from the weld to the thickening for the machine key, from the beginning with the fact that, in order to increase reliability in operation, the intermediate section at the ends of the pipe 35 is made with a rounded length of more than 20 times the value of half the difference in nominal passages of the undeformed and upset parts of the pipe, the intermediate section of the nipple adjacent to its cylindrical section on the side of the weld is made with a rounded length, more than 6 times the value of half of the difference conditional passages of the sections located before and after it, and the difference between the inner diameters of the undeformed and upset parts of the pipe is significantly less than the difference between the inner diameters of the cylindrical sections of the nipple from the side of the weld and from the side. 50 threads, the a-nominal bore on the side of the threaded section is equal to the nominal bore of the upset pipe ends.
    [2]
    2. A pipe according to claim 1, characterized in that the outer diameter of the pipe in the upsetting area is made equal to the outer diameter of the pipe body, and the upsetting of the ends of the pipe is made radially inside its nominal bore.
    [3]
    3. The pipe according to claim 1, with the fact that the value of the upset directed radially inward of the pipe is greater than the value of the upset directed outward of the pipe.
    [4]
    4. A pipe according to claim 1, characterized by the fact that the radius of curvature of the intermediate section at the ends of the pipe between the undeformed and upset parts is at least 300 mm.
    [5]
    5. The pipe according to claim 1, which is different from that. that the intermediate section of the nipple, adjacent to its cylindrical section from the thread side, is made in the form of a truncated cone.
    [6]
    6. A pipe according to claim 1, which is different. that the section of the nipple adjacent to its cylindrical section from the thread side is rounded along an arc of a circle and tangentially conjugated with the cylindrical section from the side of the weld;
    [7]
    7. A pipe according to claim 1, characterized in that the difference between the inner diameters of the undeformed and upset parts of the pipe is 50 ... 30% less than the difference between the inner diameters of the cylindrical sections of the nipple on the weld side and on the thread side, and the cross section of the upset part of the pipe is at least 1.5 times the cross section of the undeformed pipe body.
    [8]
    8. The pipe according to claim 1, with the fact that the surface of the ledge n; the outer side of the coupling in the area of transition from the weld to the thickening for the machine key is made at an angle of 90 ° to the outer surface of the coupling, the nominal bore of the coupling from the side of the threaded section is made smaller than the nominal bore of the upset pipe ends, the intermediate section of the coupling with decreasing in the direction of the threaded section is the passage is located between the 90 ° step and the welded seam and is rounded with a length greater than 6 times the value of half the difference in nominal passages of the sections located before and after the said intermediate section, and the difference in the inner diameters of the undeformed and upset parts of the pipes is equal to or somewhat less than the difference in the internal the diameters of the cylindrical sections of the nipple from the side of the weld and from the side of the thread, and the cross-sections of the upset part of the pipe are at least 1.5 times the cross-section of the undeformed pipe body. ...
    [9]
    9. A pipe according to claim 8, characterized in that the intermediate section of the coupling, adjacent to its cylindrical section from the thread side, is rounded along an arc of a circle and tangentially conjugated with the cylindrical section from the weld side.
    [10]
    10. A pipe according to claims 6 and 9, which is clear in that the radius of curvature of the circular arc of the intermediate sections of the pin and box adjacent to the cylindrical sections from the thread side is at least 150 mm.
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    CA2392411A1|2001-05-31|A thread joint and a male portion
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    同族专利:
    公开号 | 公开日
    AR244386A1|1993-10-29|
    EP0353180B1|1993-04-14|
    DE58904054D1|1993-05-19|
    DE3825992A1|1990-02-01|
    JPH02140388A|1990-05-30|
    CN1039636A|1990-02-14|
    DE3825992C2|1990-08-23|
    AT88242T|1993-04-15|
    EP0353180A3|1991-04-17|
    NO892910D0|1989-07-14|
    CN1024209C|1994-04-13|
    EP0353180A2|1990-01-31|
    ES2039932T3|1993-10-01|
    NO892910L|1990-01-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2564324C1|2014-10-07|2015-09-27|Управляющая компания общество с ограниченной ответственностью "ТМС групп"|Drilling pipe structure and method of its production|
    RU194158U1|2019-08-01|2019-11-29|Общество с ограниченной ответственностью "Пермская компания нефтяного машиностроения"|Heavy drill pipe|US1973848A|1932-05-26|1934-09-18|Peter J Duffy|Flush joint drill stem|
    US3080179A|1959-10-06|1963-03-05|Huntsinger Associates|Slip engaging portion of drill string formed of increased wall thickness and reduced hardness|
    US3067593A|1960-08-29|1962-12-11|American Iron & Machine Works|Integral tool joint drill pipe|
    US4410204A|1981-07-06|1983-10-18|Dril-Quip, Inc.|Connector|
    SE8203247L|1982-05-25|1983-11-26|Jagelid Kjell Inge Gunnar|COMPARATIVE CIRCUIT AT THE ROD FOR BORING ENDAMAL|US5361846A|1993-11-19|1994-11-08|Grant Tfw, Inc.|Apparatus and method for enhancing fatigue properties of subterranean well drill pipe immediate the area of securement to a tool joint|
    US7069958B2|2004-01-29|2006-07-04|Wellstream International Limited|Assembly and method for stiffening a flexible pipe|
    FR2937077B1|2008-10-15|2010-10-22|Vallourec Mannesmann Oil & Gas|COMPONENT FOR DRILLING AND OPERATING HYDROCARBON WELLS|
    US20140182732A1|2012-12-31|2014-07-03|John M. Coogan|Flush joint pipe|
    PL2845992T3|2013-09-09|2016-07-29|Sandvik Intellectual Property|Drill string with bend resistant coupling|
    AU2015289455B2|2014-07-18|2018-10-18|Bly Ip Inc.|Drill rod having internally projecting portions|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE3825992A|DE3825992C2|1988-07-28|1988-07-28|
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