WO2011044690A1 - Dispositif de connexion fileté hermétique pour tiges de forage ou tubes de revêtement d'un tubage technique pour la prospection géologique d'une installation de forage - Google Patents

Dispositif de connexion fileté hermétique pour tiges de forage ou tubes de revêtement d'un tubage technique pour la prospection géologique d'une installation de forage Download PDF

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Publication number
WO2011044690A1
WO2011044690A1 PCT/CA2010/001630 CA2010001630W WO2011044690A1 WO 2011044690 A1 WO2011044690 A1 WO 2011044690A1 CA 2010001630 W CA2010001630 W CA 2010001630W WO 2011044690 A1 WO2011044690 A1 WO 2011044690A1
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WO
WIPO (PCT)
Prior art keywords
tool joint
tapered
thread
connection
joint pin
Prior art date
Application number
PCT/CA2010/001630
Other languages
English (en)
Inventor
Yuri Kontantinovich Nizienko
Victor Belilovskiy
Original Assignee
Kai Services Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kai Services Inc. filed Critical Kai Services Inc.
Publication of WO2011044690A1 publication Critical patent/WO2011044690A1/fr

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Classifications

    • 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
    • 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
    • E21B17/08—Casing joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
    • F16L15/004—Screw-threaded joints; Forms of screw-threads for such joints with conical threads with axial sealings having at least one plastically deformable sealing surface

Definitions

  • TITLE HERMETIC THREADED CONNECTING DEVICE FOR DRILL OR CASING PIPES OF TECHNICAL CASING OF GEOLOGICAL PROSPECTING DRILLING RIG
  • Embodiments of this invention relate to the field of geological prospecting, in particular to hermetic tapered threaded connections for tubular structures (sections) in the construction of drilling and/or casing strings used for drilling geological prospecting wells to investigate the subsurface earth's crust to determine the presence of useful minerals.
  • variants of the invention relate to a tapered threaded connection, containing means for changing the direction of load on the thread as well as a number of independent seals that are sensitive to external stimuli (pressure), spaced in the axial direction relative to the seal, which is formed by direct mutual engagement of the structural sectional elements of the thread, with the aim of insulating the thread from the effects of the fluid medium both inside the pipe channel, as well as from the outer surface of the connected tubular structures.
  • the task of sealing tapered threaded connections can be reduced essentially to their compaction by some means or other, that is, it consists of the task of closing off along the cross-section in any area of the threaded connection the apertures of the four channels of leakage, namely:
  • a hermetic threaded connecting device for the drill or casing pipes of the technical casing of a geological prospecting drilling rig having a through channel, the diameter of which corresponds to the inner diameter of the connecting pipes, and equipped with means for fastening to the connecting pipes, including:
  • a tapered tool joint pin with a threaded part positioned in the central region of its outer tapered surface, by an axially directed projection with a smooth sealing outer surface, which is physically a continuation of the threaded part and is formed within the diameter of the valleys of the smaller diameter thread, as well as with a bearing sealing shoulder, radially extending in the direction of the periphery with respect to the threaded part on the side of its larger diameter and axially distanced with respect to the threaded part by the magnitude of the axially directed section with a smooth sealing outer surface, which is physically a continuation of the threaded part and is formed within the diameter of the peaks of said thread in this zone;
  • the geometrical parameters of the opposite engaging sealing surfaces of the tapered tool joint pin and tool joint box are chosen from the conditions for providing in the engagements an inter-metallic sealing interaction in the process of tightening the connection;
  • the height of the profile elements, that is, the peaks and valleys, of the tapered tool joint pin exceeds the height, in the operational state of the connection, of the profile elements of the thread of the tool joint box (US, No. 5,788,401 , 1998).
  • the claimed technical solution was based on the challenge of improving the lifetime of the pipe in its operational condition and the reliability of the connection to adjoining pipes, while ensuring optimal conditions for performing repeated assembly and disassembly without damaging the integrity (quality) of the engaging sealing surfaces.
  • the technical result is an increase in the hermeticity of the tapered threaded connection through the use of the claimed pipe and the provision of even distribution of workload over all the turns of the thread in the process of employment in order to improve the durability and reliability of the combined technological system as a whole.
  • a tapered tool joint pin with a threaded part positioned in the central region of its outer tapered surface, by an axially directed projection with a smooth sealing outer surface, which is physically a continuation of the threaded part and is formed within the diameter of the valleys of the smaller diameter thread, as well as with a bearing sealing shoulder, radially extending in the direction of the periphery with respect to the threaded part on the side of its larger diameter and axially distanced with respect to the threaded part by the magnitude of the axially directed section with a smooth sealing outer surface, which is physically a continuation of the threaded part and is formed within the diameter of the peaks of said thread in this zone;
  • said end surface of axially directed projection of the tapered tool joint pin and the opposite surface of the shoulder of the tool joint box, radially directed toward the axis of the connection are spatially separated by an axial gap.
  • the geometrical parameters of the opposite engaging sealing surfaces of the tapered tool joint pin and tool joint box are chosen from the conditions for providing in the engagements an inter-metallic sealing interaction in the process of tightening the connection.
  • the profiles of the thread in the tapered threaded interlocking connection are similar figures in the form of unequal sided trapezoids, principally, with rounded vertices, while in the operational state of the connection contact is carried out along the relatively steep lateral bearing surfaces of the thread, oriented at a negative angle relative to the perpendicular to the axis of the connection, the gently sloping lateral fixed surfaces are spatially distanced with a relative gap.
  • the height, at least, of part of the profile elements, that is, the peaks and valleys, of the tapered tool joint pin exceeds the height (in the operational state of the connection) of the matching profile elements of the thread of the tool joint box.
  • the delivered technical result is achieved by there being in the hermetic threaded connecting device for the drill or casing pipes of the technical casing of a geological prospecting drilling rig, having a through channel, the diameter of which corresponds to the inner diameter of the connecting pipes, and equipped with means for fastening to the connected pipes, which include:
  • the geometrical parameters of the opposite engaging sealing surfaces of the tapered tool joint pin and tool joint box are chosen from the conditions for providing in the engagements an inter-metallic sealing interaction in the process of tightening the connection.
  • the profiles of the thread in the tapered threaded interlocking connection are similar figures in the form of unequal sided trapezoids, principally, with rounded vertices, while in the operational state of the connection contact is carried out along the relatively steep lateral bearing surfaces of the thread, oriented at a negative angle relative to the perpendicular to the axis of the connection, the gently sloping lateral fixed surfaces are spatially distanced with a relative gap.
  • the height, at least, of part of the profile elements, that is, the peaks and valleys, of the thread of the tool joint box exceeds the height of the matching, in the operational state of the connection, profile elements of the tapered tool joint pin.
  • the delivered technical result is achieved by there being in the hermetic threaded connecting device for the drill or casing pipes of the technical casing of a geological prospecting drilling rig, having a through channel, the diameter of which corresponds to the inner diameter of the connecting pipes, and equipped with means for fastening to the connected pipes, which include:
  • a threaded tool joint pin with a threaded part positioned in the central region of its outer tapered surface, by an axially directed projection with a bearing end and a smooth sealing outer surface, which is physically a continuation of the threaded part and is formed within the diameter of the valleys of the smaller diameter thread, and also with a shoulder radially extending in the direction of the periphery with respect to the threaded part on the side of its larger diameter and axially distanced with respect to the threaded part by the magnitude of the axially directed section with a smooth sealing outer surface, which is physically a continuation of the threaded part and is formed within the diameter of the peaks of said thread in this zone;
  • the geometrical parameters of the opposite engaging sealing surfaces of the tapered tool joint pin and tool joint box are chosen from the conditions for providing in the engagements an inter-metallic sealing interaction in the process of tightening the connection.
  • the profiles of the thread in the tapered threaded interlocking connection are similar figures in the form of unequal sided trapezoids with rounded apexes, while in the operational state of the connection contact is carried out along the relatively steep lateral bearing surfaces of the thread, oriented at a negative angle relative to the perpendicular to the axis of the connection, while the gently sloping oppositely-positioned lateral fixed surfaces are spatially arranged with a relative gap.
  • the height, at least, of part of the profile elements, that is, the peaks and valleys, of the tapered tool joint pin exceeds the height, in the operational state of the connection, of the profile elements of the tool joint box.
  • the engaged surfaces of the bearing shoulder of the box and the bearing end of the tapered tool joint pin are spatially oriented at an angle to the axis of the connection to form a tapered surface of engagement with the vertex facing in the direction of the device for fastening the tapered tool joint pin to the pipe.
  • the delivered technical result is achieved by there being in the hermetic threaded connecting device for the drill or casing pipes of the technical casing of a geological prospecting drilling rig, having a through channel, the diameter of which corresponds to the inner diameter of the connecting pipes, and equipped with means for fastening to the connected pipes, which include:
  • a threaded tool joint pin with a threaded part positioned in the central region of its outer tapered surface, by an axially directed projection with a bearing end and a smooth sealing outer surface, which is physically a continuation of the threaded part and is formed within the diameter of the valleys of the smaller diameter thread, and also with a shoulder radially extending in the direction of the periphery with respect to the threaded part on the side of its larger diameter and axially distanced with respect to the threaded part by the magnitude of the axially directed section with a smooth sealing outer surface, which is physically a continuation of the threaded part and is formed within the diameter of the peaks of said thread in this zone;
  • a tool joint box structurally organized with the possibility of screwing into it the tapered tool joint pin, with the formation of a tapered threaded interlocking connection in the central region of its inner tapered surface, which on the side of the box thread with the smaller diameter is transformed into an axially directed section with a smooth sealing inner surface formed within the diameter of the peaks of the thread in this zone, which is bounded by a bearing shoulder radially directed towards the axis of the connection, and from the side of the larger diameter thread said tapered surface is transformed into an axially directed section with a smooth sealing inner surface formed within the diameter of the valleys of the thread in this zone, bounded by an end surface, spatially separated from the opposite surface of the shoulder of the tapered tool joint pin by means of a gap.
  • the geometrical parameters of the opposite engaging sealing surfaces of the tapered tool joint pin and tool joint box are chosen from the conditions for providing in the engagements an inter-metallic sealing interaction in the process of tightening the connection.
  • the profiles of the thread in the tapered threaded interlocking connection are similar figures in the form of unequal sided trapezoids, principally, with rounded vertices, while in the operational state of the connection contact is carried out along the relatively steep lateral bearing surfaces of the thread, oriented at a negative angle relative to the perpendicular to the axis of the connection, while the gently sloping oppositely-positioned lateral fixed surfaces are spatially arranged with a relative gap.
  • the height, at least, of part of the profile elements, that is, the peaks and valleys, of the thread of the tool joint box exceeds the height of the matching, in the operational state of the connection, profile elements of the thread of the tool joint pin.
  • the engaged surfaces of the bearing shoulder of the box and the bearing end of the tapered tool joint pin are spatially oriented at an angle to the axis of the connection to form a tapered surface of engagement with the vertex facing in the direction of the device for fastening the tapered tool joint pin to the pipe.
  • Figure 1 is a general view of embodiment 1 of the claimed technical solution in operational state
  • Figure 2 is a detail view of point I in figure 1 (nodes of the radial and end seal, and also a means of changing the direction of the load on the threads in the form of a circular profiled groove on the upper section of the connection);
  • Figure 3 is a detail view of point II in figure 1 (node of the radial seal and a means of changing the direction of the load on the thread in the form of a circular profiled groove on the lower section of the connection);
  • Figure 4 is a detail view of point III in figure 1 (the geometry of the profile of the threaded connection),
  • Figure 5 is a general view of embodiment 2 of the claimed technical solution in operational state.
  • Figure 6 is a detail view of point IV in figure 5 (nodes of the radial and end seal and also a means of changing the direction of the load on the threads in the form of a circular profiled groove on the upper section of the connection);
  • Figure 7 is a detail view of point V in figure 5 (node of the radial seal and a means of changing the direction of the load on the thread in the form of a circular profiled groove on the lower section of the connection);
  • Figure 8 is a detail view of point VI in figure 5 (the geometry of the profile of the threaded connection);
  • Figure 9 is a general view of the claimed technical solution for embodiment 3 in operational state.
  • Figure 10 is a detail view of point VII of figure 9 (nodes of the radial and end seal and also a means of changing the direction of the load on the thread in the form of a circular profiled groove on the lower section of the connection);
  • Figure 1 is a detail view of point VIII in figure 9 (a node of the radial seal and also a means of changing the direction of the load on the thread in the form of a circular profiled groove on the upper section of the connection);
  • Figure 12 is a detail view of point IX in figure 9 (the geometry of the profile of the threaded connection);
  • Figure 13 is a general view of the claimed technical solution for embodiment 4 in operational state
  • Figure 14 is a detail view of point X in figure 13 (nodes of the radial and end seal and also a means of changing the direction of the load on the thread in the form of a circular profiled groove on the lower section of the connection);
  • Figure 15 is a detail view of point XI in figure 13 (a node of the radial seal and also a means of changing the direction of the load on the thread in the form of a circular profiled groove on the upper section of the connection); and
  • Figure. 16 is a detail view of point XII of figure 13 (the geometry of the profile of the threaded connection).
  • FIG. 16 is a detail view of point XII of figure 13 (the geometry of the profile of the threaded connection).
  • 25 - groove (circular, executed in the body of tool joint pin 1 , functionally serving as a means of changing the direction of load on the thread).
  • 26 - groove (circular, executed in the body of the tool joint box, functionally serving as a means of changing the direction of load on the thread).
  • a hermetic threaded connection device for the drilling or casing pipes of the technical casing of a geological prospecting drilling rig having a through channel, the diameter of which corresponds to the inner diameter of the connected pipes of the casing and equipped with means for fastening to the connected pipes (by convention not shown in the graphic material) includes: [01 12] a tapered tool joint pin 1 with a threaded part positioned in the central region of its outer tapered surface, by axially directed projection 2 with smooth sealing outer surface 3, which is physically a continuation of the threaded part and is formed within the diameter of the valleys of the smaller diameter thread, and also with an inclined sealing shoulder 4 (having a sealing surface 5), radially extending towards the periphery with respect to the threaded part on the side of its larger diameter and axially distanced with respect to the threaded part by the magnitude of axially directed section 6 with a smooth sealing outer surface 7, which is physically a continuation of the threaded part and
  • [01 13] - tool joint box 8 structurally organized to allow the possibility of screwing into it the tapered tool joint pin 1 to form a tapered threaded interlocking connection in the central region of its inner tapered surface, which on the side of the box thread with the smaller diameter is transformed into an axially directed section 9 with a smooth sealing inner surface 10, formed within the diameter of the peaks of the thread in this zone, which (that is, section 9) is bounded by shoulder 12 radially directed toward axis 1 1 of the connection, and on the side of the larger diameter thread said tapered threaded surface of the central region of box 8 is transformed into an axially directed section 13 with a smooth sealing inner surface 14, formed within the diameter of the valleys of the thread in this zone and bounded by oblique bearing end surface 15 of box 8, engaged with the matching surface 5 of the inclined bearing shoulder 4 of the tapered tool joint pin 1 at an angle to the axis 1 of the connection to form a tapered surface 17 of engagement with vertex 16, facing in the direction of the device for fasten
  • Said end surface of the axially directed projection 2 of tapered tool joint pin 1 and the opposite surface of the shoulder, radially directed toward axis 1 1 of the connection, of the tool joint box 8 are spatially separated by an axial gap 19.
  • sealing surfaces 3 and 7 of the tapered tool joint pin 1 and tool joint box 8 (sealing surfaces 10 and 14, respectively) to be executed in a cylindrical form.
  • the engaging sealing surfaces 3 and 7 of the tapered tool joint pin 1 and tool joint box 8 are executed with anti-friction and/or corrosion-resistant coating 27 of a material with a modulus of elasticity not exceeding, principally, the lower value of the modulus of elasticity of the material of the elements of the connection.
  • the engaged surfaces of bearing shoulder 12 of box 8 and of the bearing end of tapered tool joint pin 1 are spatially oriented at an angle to the axis 1 1 of the connection to form tapered surface 17 of engagement with the apex 16 facing in the direction of the device for fastening the tapered tool joint pin 1 to the corresponding pipe (that is, in an axially opposite direction 18 to the drilling of the well).
  • the device operates in the following manner.
  • connection eliminates the phenomenon of so-called "unwinding", that is, transverse deformation with an increase in the diameter of connected elements in the region of the bearing ends, which makes the connection less critical in exceeding the permissible torque and increases its reliability of use, and secondly, provides additional compression of the engaging sealing surfaces, forming radial nodes for the sealing of the connection.
  • unwinding that is, transverse deformation with an increase in the diameter of connected elements in the region of the bearing ends
  • additional compression of the engaging sealing surfaces forming radial nodes for the sealing of the connection.
  • the object embodying the claimed technical solution in its implementation is designed for geological exploration work and could be implemented as a hermetic tapered threaded connection of tubular structures (sections) in the construction of drilling and casing strings, used in the investigation of the earth's crust to determine the presence of useful minerals
  • embodiments of the invention relate to a tapered threaded connection, which (the connection) contains several independent seals, which are sensitive to external stimuli (pressure) and spaced in the axial direction relative to the seal, formed directly by the mutual engagement of the sectional elements of the thread with the aim of insulating it from the effects of fluid both inside the pipe channel, as well as outside the connected tubular structures);

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)

Abstract

L'invention concerne, selon certains modes de réalisation, le domaine de la prospection géologique, notamment des connexions filetées coniques hermétiques pour structures tubulaires (sections) dans la construction de trains de tiges et/ou de colonnes de tubage utilisés pour forer des puits de prospection géologiques afin d'étudier la subsurface de l'écorce terrestre pour déterminer la présence de minéraux utiles.
PCT/CA2010/001630 2009-10-12 2010-10-12 Dispositif de connexion fileté hermétique pour tiges de forage ou tubes de revêtement d'un tubage technique pour la prospection géologique d'une installation de forage WO2011044690A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2009138323 2009-10-12
RU2009138323 2009-10-12

Publications (1)

Publication Number Publication Date
WO2011044690A1 true WO2011044690A1 (fr) 2011-04-21

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PCT/CA2010/001630 WO2011044690A1 (fr) 2009-10-12 2010-10-12 Dispositif de connexion fileté hermétique pour tiges de forage ou tubes de revêtement d'un tubage technique pour la prospection géologique d'une installation de forage

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108443627A (zh) * 2018-03-30 2018-08-24 广东管博管道技术科技有限公司 一种柔性密封自锁承插接口
US10400922B2 (en) 2014-10-06 2019-09-03 Nippon Steel Corporation Threaded joint for steel pipes
CN111894969A (zh) * 2020-07-20 2020-11-06 邹城兖矿泰德工贸有限公司 强力型接杆
CN114922561A (zh) * 2022-05-18 2022-08-19 中国地质大学（北京） 一种基于地质勘探的便携式钻机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662659A (en) * 1983-01-17 1987-05-05 Hydril Company Tubular joint with trapped mid-joint metal-to-metal seal having unequal tapers
US4688832A (en) * 1984-08-13 1987-08-25 Hydril Company Well pipe joint
US4946201A (en) * 1989-03-08 1990-08-07 Baroid Technology, Inc. Oil field tubular connection
US4958862A (en) * 1988-10-03 1990-09-25 Dalmine Spa Hermetic metal pipe joint
US5788401A (en) * 1996-12-24 1998-08-04 Boart Longyear International Holdings, Inc. Rod joint

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662659A (en) * 1983-01-17 1987-05-05 Hydril Company Tubular joint with trapped mid-joint metal-to-metal seal having unequal tapers
US4688832A (en) * 1984-08-13 1987-08-25 Hydril Company Well pipe joint
US4958862A (en) * 1988-10-03 1990-09-25 Dalmine Spa Hermetic metal pipe joint
US4946201A (en) * 1989-03-08 1990-08-07 Baroid Technology, Inc. Oil field tubular connection
US5788401A (en) * 1996-12-24 1998-08-04 Boart Longyear International Holdings, Inc. Rod joint

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10400922B2 (en) 2014-10-06 2019-09-03 Nippon Steel Corporation Threaded joint for steel pipes
CN108443627A (zh) * 2018-03-30 2018-08-24 广东管博管道技术科技有限公司 一种柔性密封自锁承插接口
CN111894969A (zh) * 2020-07-20 2020-11-06 邹城兖矿泰德工贸有限公司 强力型接杆
CN114922561A (zh) * 2022-05-18 2022-08-19 中国地质大学（北京） 一种基于地质勘探的便携式钻机

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