THREADED CONNECTION FOR HAMMERING INTERCONNECTED TUBULAR MEMBERS

Abstract

A threaded connection for hammering interconnected tubular members into soil, such as solid ground, for the exploration and production of a hydrocarbon well, wherein said threaded connection comprises a pin member comprising an external shoulder, a pin nose and a tapered pin threaded portion located between the external shoulder and the pin nose, and a box member comprising an internal shoulder, a box nose and a tapered box threaded portion located between the internal shoulder and the box nose.

Description

THREADED CONNECTION FOR HAMMERING INTERCONNECTED TUBULAR MEMBERS FIELD OF INVENTION The invention relates to a threaded connection for hammering interconnected tubular members into the ground for the exploration and production of a hydrocarbon well. The ground can be any type of soil, such as firm earth. The invention also relates to a method for hammering such interconnected tubular members into the ground for the exploration and production of a hydrocarbon well. BACKGROUND OF THE INVENTION Hammering is used to drive a string of interconnected tubular members into the ground. A drive pursuer is placed on top of the tubular members in the string to apply hammering impact forces. This is a time-efficient and therefore relatively inexpensive way to drive the string of tubular members into the ground. Typically, a seal is provided between the engaged threaded portions and the pin nose to protect the threaded connection from damage caused by overpressure within the threaded connection. SUMMARY OF THE INVENTION Threaded connections used for hammering interconnected tubular elements into the ground for hydrocarbon exploration and production have the disadvantage that they can be damaged. These threaded connections can also have the disadvantage that it is difficult or time-consuming to determine if the final fit of the threaded connection is achieved during assembly. Furthermore, the hammering of these connections can damage the threaded connection to such an extent that its overall performance deteriorates. Finally, the hammering can negatively affect the degree of sealing, or the hammering can damage the threaded connection to such an extent that its overall performance deteriorates. BRIEF DESCRIPTION OF THE INVENTION The invention relates to providing an improved, or at least alternative, threaded connection for hammering interconnected tubular members into the ground for the exploration and production of a hydrocarbon well. This threaded connection comprises: - a pin member comprising an external shoulder, a pin nose, and a tapered pin threaded portion located between the external shoulder and the pin nose, / b / CLn / zznz / B / YiAi - a box member comprising an internal shoulder, a box nose, and a tapered box threaded portion located between the internal shoulder and the box nose, wherein - the threaded portion of the pin and the threaded portion of the box are configured to engage with each other during the rotary adjustment of the threaded connection, - the pin threaded portion and the box threaded portion comprise hook-profile threads that provide radial interference between the crests of the pin threaded portion and the base of the box threaded portion and / or between the crests of the box threaded portion and the base of the pin threaded portion in the final fit of the threaded connection, - the facing load flanks of the hook-profile threads of the threaded portion of the pin and the threaded portion of the box are in contact with each other in the final adjustment of the threaded connection, - the facing flanges of the hook-profile threads of the threaded portion of the pin and the threaded portion of the box are at a flank distance from each other in the final adjustment of the threaded connection, - the threaded connection is in the final fit free of any seal located between the mating pin and the threaded portions of the case and the pin nose, - the nose of the box is in contact with the external shoulder at the final adjustment of the threaded connection, and - The pin nose is located at an internal shoulder distance from the internal shoulder at the final adjustment of the threaded connection. The threaded connection is configured so that the box nose is in contact with the external shoulder in the final assembly. This allows you to determine, during the rotational tightening of the threaded connection, when the final fit is achieved by checking if the box nose is in contact with the external shoulder. This is an effective and efficient way to determine when the final fit of the threaded connection has been reached. For threaded connections that will be hammered, it is crucial to achieve the correct final fit configuration to ensure that the impact forces induced by hammering are transferred along the correct path from the pin member to the box member. If the threaded connection is driven into the ground without the outer shoulder and box nose in contact, the impact forces created during hammering will be transferred primarily from the pin member to the box member through the threaded portions of the pin and box. This creates a high risk of damage to the threaded portions of the pin and box, for example, from cracking and plastic deformation. In use, the tubular members, which are interconnected via the threaded connection, are hammered into the ground after the final tightening of the threaded connection has been achieved. As mentioned, this ensures that the impact forces induced by the hammering are transferred along the correct path from the pin member to the box member. The pin member is positioned on top of the box member during hammering. In this situation, the impact forces are transferred primarily from the pin member to the box member through the outer shoulder and the box nose, which are in contact with each other. The fact that the impact forces induced by the hammering first move through the outer shoulder, due to its contact with the box nose, provides a relevant degree of protection against impact forces for the threaded portions of the pin and box. The effects of impact forces on the threaded connection are further enhanced by the fact that, in the final fit, the thread flanks of the hook-profiled pin and socket threads are positioned at a flank distance from each other, and there is radial interference between the crests and bases of the pin and socket threads. This flank distance allows the pin and socket threads to move a certain distance relative to each other under the impact forces of hammering. This movement between the pin and socket threads, along with the frictional forces created by the radial interference acting against this movement, forms an energy-absorbing buffer that absorbs the energy of the impact forces before the thread flanks make contact. The threaded connection is configured so that the pin nose is located at a shoulder distance from the inner shoulder in the final setting. This ensures that the impact forces from hammering are transferred primarily through the threaded connection over the increased radial distance between the first outer shoulder surface and the first nose surface of the case. The impact forces induced by hammering create shock waves that travel through the threaded connection. A shock wave first creates compression and then tension in the threaded connection. The threaded portions of the mating pin and socket are the only parts in the threaded connection that absorb the tensile forces. Hook-profile threads, with their load-bearing flanks facing each other in the final fit, ensure that the threaded connection can withstand the tension created by the shock waves. Furthermore, the hook-profile threads help maintain contact between the outer shoulder and the socket nose as the shock waves travel through the threaded connection. In one embodiment of the threaded connection, - the threaded connection defines a central axis in the final fitting of the threaded connection, - the external shoulder comprises a first external shoulder surface, a second external shoulder surface and a shoulder retaining surface, - the first external shoulder surface is located at a first radial shoulder distance from the central axis and a first axial shoulder distance from the threaded portion of the pin, - the second external shoulder surface is located at a second radial shoulder distance from the central axis and a second axial shoulder distance from the threaded portion of the pin, - the first radial shoulder distance is greater than the second radial shoulder distance, - the first axial shoulder distance is less than the second axial shoulder distance, - the shoulder retention surface is located between the first external surface of the shoulder and the second external surface of the shoulder, - the case nose comprises a first case nose surface, a second case nose surface and a case retaining surface, - the first case nose surface is located at a first radial distance from the case center axis and a first axial distance from the case threaded portion, - the second surface of the box nose is located at a second distance from the radial box of the central axis and a second distance from the axial box of the threaded portion of the box, - the first radial box distance is greater than the second radial box distance, - the first axial box distance is less than the second axial box distance, - the case's retaining surface is located between the first surface of the case's nose and the second surface of the case's nose, - the first external surface of the shoulder and the first surface of the nose of the case are in contact with each other in the final adjustment of the threaded connection, - the second surface of the box nose is located at a distance from the outer shoulder of the second surface of the outer shoulder in the final adjustment of the threaded connection, and - The shoulder retainer surface and the case retainer surface face each other in the final adjustment of the threaded connection. The first external shoulder surface and the first box nose surface are in contact with each other, and the second box nose surface is located at an external shoulder distance from the second external shoulder surface at the final fit of the threaded connection. Because the first external shoulder surface and the first box nose surface are located at a greater radial distance from the threaded portions than the second external shoulder surface and the second box nose surface, impact forces are transferred through the threaded connection over an increased radial distance from the threaded portions. This provides an additional degree of protection for the mating threaded portions against impact forces. The threaded connection is finally free of any seal (e.g., a metal-to-metal seal or an elastomeric seal) located between the mating threaded portions and the pin nose. A seal located between the mating threaded portions and the pin nose is typically provided to protect a threaded connection against damage caused by overpressure within the threaded connection. The shoulder retainer and box retainer surfaces provide additional protection against damage caused by overpressure within the threaded connection. These surfaces protect against deformation due to overpressure by locking the box nose and preventing outward displacement. Preventing radial movement of the box nose away from the centerline is crucial for maintaining the structural integrity of the threaded connection required for hammering. Furthermore, such radial movement of the box nose can damage the last engaged teeth of the engaged threaded portions. In one embodiment of the threaded connection, the first external surface of the complete shoulder is located at a greater radial distance from the central axis than the second external surface of the shoulder; the first external surface of the complete shoulder is located at a smaller axial distance from the threaded portion of the pin than the second external surface of the shoulder; the first surface of the nose of the complete box is located at a greater radial distance from the central axis than the second surface of the nose of the box; and the first surface of the nose of the complete box is located at a smaller axial distance from the threaded portion of the box than the second surface of the nose of the box. In one embodiment of the threaded connection, the shoulder retainer surface is located between the first external shoulder surface and the second external shoulder surface when viewed axially along the centerline and radially with respect to the centerline and the case retainer. The surface is located between the first case nose surface and the second case nose surface when viewed axially along the centerline and radially with respect to the centerline. In one embodiment of the threaded connection, the first external shoulder surface and the first nose surface of the housing extend perpendicularly to the central axis of the threaded connection. This facilitates maintaining the structural integrity of the threaded connection when the first external shoulder surface and the first nose surface of the housing are in contact with each other during the final offset transfer forces during hammering. In one embodiment of the threaded connection, the first external shoulder surface extends at an angle Ai of 90 degrees with respect to the central axis of the threaded connection, and the first nose surface of the box extends at an angle δι of 90 degrees with respect to the central axis of the threaded connection. In one embodiment of the threaded connection, the second external shoulder surface and the second nose surface of the housing extend perpendicularly to the central axis of the threaded connection. This facilitates maintaining the structural integrity of the threaded connection even when the second external shoulder surface and the second nose surface of the housing come into contact with each other during hammering. In one embodiment of the threaded connection, the second external shoulder surface extends at an angle λ2 of 90 degrees with respect to the central axis of the threaded connection, and the second nose surface of the box extends at an angle Ó2 of 90 degrees with respect to the central axis of the threaded connection. In one embodiment of the threaded connection, the first external shoulder surface and the first nose surface of the housing have an axial interference of less than or equal to 0.2 mm in the final fit of the threaded connection. This axial interference is measured axially along the centerline of the threaded connection. This axial interference may be greater than 0 and less than or equal to 0.2 mm in the final fit of the threaded connection. This axial interference may be between 0.01 mm and 0.1 mm. Preferably, this axial interference is (approximately) 0.05 mm. In one embodiment of the threaded connection, the external shoulder distance between the second external shoulder surface and the second surface of the box nose is less than or equal to 0.3 mm in the final fit of the threaded connection. This external shoulder distance is measured axially along the centerline of the threaded connection. This external shoulder distance may be greater than 0 mm and less than or equal to 0.3 mm in the final fit of the threaded connection. This external shoulder distance may be between 0.02 mm and 0.2 mm. Preferably, this external distance from the shoulder is (approximately) 0.1 mm. In one embodiment of the threaded connection, the shoulder retainer surface extends at an angle φ between 5 and 11 degrees with respect to the centerline of the threaded connection, and the box retainer surface extends at an angle ε between 5 and 11 degrees with respect to the centerline of the threaded connection. This configuration of the shoulder retainer and box retainer surfaces facilitates the fitting process of the threaded connection. The angles φ and ε can be substantially equal. The shoulder retainer surface preferably extends at an angle φ of approximately 8 degrees with respect to the centerline of the threaded connection. The box retainer surface preferably extends at an angle ε of approximately 8 degrees with respect to the centerline of the threaded connection. In one embodiment of the threaded connection, the shoulder retainer surface and the case retainer surface are configured to block radial movement of the case nose away from the central axis. In one embodiment of the threaded connection, the threaded connection is in its final fit free of any seal located between the mating pin and the threaded portions of the case and the case nose. In one embodiment of the threaded connection, the pin member comprises an internal pin guide surface located between the threaded pin portion and the pin nose and an external pin guide surface located between the threaded pin portion and the external shoulder; the box member comprises a box guide surface located between the threaded box portion and the internal shoulder and an external box guide surface located between the threaded box portion and the box nose; the internal pin guide surface and the internal box guide surface are configured to move relative to each other during fitting and face each other in final fitting, and the external pin guide surface and the external box guide surface are configured to move relative to each other during fitting and face each other in final fitting. In one embodiment of the threaded connection, the box member comprises a box connector outer surface and the first box nose surface extends to or adjacent to the box connector outer surface. In one embodiment of the threaded connection, the pin member comprises a pin connector outer surface and the first outer shoulder surface extends to or adjacent to the pin connector outer surface. In one embodiment of the threaded connection, the radial interference between the crests of the threaded portion of the pin and the base of the threaded portion of the housing and / or between the crests of the threaded portion of the housing and the base of the threaded portion of the pin at the final threaded connection is less than 0.25 mm, in particular less than 0.2 mm, and even more specifically between and including 0.05 mm and 0.15 mm. Preferably, this radial interference is 0.1 mm. In one embodiment of the threaded connection, the threaded connection is configured to have the pin nose and the inner shoulder in contact with each other, while the facing socket flanks are not in contact with each other in the final fit and under a predetermined compressive force working on the threaded connection in a central axis direction. In one embodiment of the threaded connection, the facing socket flanks are more widely spaced from each other than the pin nose and inner shoulder when viewed along the centerline. In one embodiment of the threaded connection, the internal shoulder distance is greater than 0 mm and less than 0.3 mm at the final fit of the threaded connection. Preferably, the internal shoulder distance is greater than 0 mm and less than 0.24 mm at the final fit of the threaded connection. The internal shoulder distance is measured axially along the centerline of the threaded connection. In one embodiment of the threaded connection, the flank distance is between 0.1 and 0.25 mm at the final adjustment of the threaded connection. The flank distance is measured axially along the central axis of the threaded connection. In one embodiment of the threaded connection, the pin member comprises an inner surface of the pin member, the box member comprises an inner surface of the box member, and the inner surface of the pin member and the inner surface of the box member extend flush into each other in the final fitting of the threaded connection. In one embodiment of the threaded connection, the inner surface of the pin member and the inner surface of the box member are located at a radius R1 of the inner member surface from the central axis. In one form of implementation of the threaded connection; - the pin member comprises a pin tube portion having an outer surface of the pin tube portion located at a radius R2 of the outer surface of the pin tube portion from the central axis, - the pin member comprises a pin member shoulder section forming the outer shoulder and located between the pin tube portion and the threaded portion of the pin, - the pin member comprises a pin connector portion extending from the shoulder section of the pin member to the pin nose, - the box member comprises a box tube portion having an outer surface of the box tube portion located at a radius R3 of the outer surface of the box tube portion from the central axis, - the box member comprises a box member shoulder section that forms the inner shoulder and is located between the tube portion of the box and the threaded portion of the box, - the box member comprises a box connector portion extending from the shoulder section of the box member to the nose of the box, - in the final adjustment, the pin connector portion and the housing connector portion together define an external connector surface located at an external connector radius R4 from the central axis, and - The external connector radius R4 is larger than each of the external surface radius R2 of the pin tube portion and the external surface radius R3 of the box tube portion. In one embodiment of the threaded connection, the external radius R4 of the connector is between and includes R2 + 13 mm and R2 + 19 mm. In one embodiment of the threaded connection, the external radius R4 of the connector is between and includes R3 + 13 mm and R3 + 19 mm. In one embodiment of the threaded connection, the radius R2 of the outer surface of the pin tube portion is equal to the radius R3 of the outer surface of the box tube portion. In one form of implementation of the threaded connection; - a pin transition area having a pin transition radius R5 is located between the outer surface of the pin tube portion and the outer surface of the connector, — a box transition area having a box transition radius R6 is located between the outer surface of the box tube portion and the outer surface of the connector, and - the pin transition radius R5 is equal to or greater than the box transition radius R6. In one embodiment of the threaded connection, the pin transition radius R5 is between and includes 2 mm and 20 mm, and the box transition radius R6 is between and includes 2 mm and 8 mm. In one embodiment of the threaded connection, the pin member and the box member comprise a single-pitch thread formed by the threaded pin portion and the threaded box portion, respectively. In one embodiment of the threaded connection, the threaded portions of the pin and socket extend under a tapered angle between and including 6 degrees and 11 degrees with respect to the central axis. In one embodiment of the threaded connection, the pin threaded portion and the box threaded portion comprise multiple threads that are configured to be formed by rotary fit between and including 180 degrees and 360 degrees. In one embodiment of the threaded connection, the internal shoulder comprises an internal butt surface facing a pin nose butt surface and located at the internal distance of the shoulder in the final fit, and the internal butt surface and the nose butt surface extend under a butt angle β between and including 4 degrees and 12 degrees with respect to the center axis of the threaded connection. In one embodiment of the threaded connection, the threaded connection is configured to achieve final adjustment when contact is achieved between the first surface of the case nose and the first surface of the external shoulder during rotary adjustment. In one embodiment of the threaded connection, the threaded connection is configured to be hammered into the ground after reaching the final fit and with the pin member placed on top of the box member during hammering. / b / CLn / zznz / B / YiAi In one embodiment of the threaded connection, the pin member comprises a pin tube portion having an outer surface of the pin tube portion located at a radius R2 of the outer surface of the pin tube portion from the central axis and 2xR2 is between and includes 508 mm and 1016 mm (between and includes 20 inches and 40 inches). In one embodiment of the threaded connection, the box member comprises a box tube portion having an outer surface of the box tube portion located at a radius R3 of the outer surface of the box tube portion from the central axis and 2xR3 is between and includes 508 mm and 1016 mm (between and includes 20 inches and 40 inches). In one embodiment of the threaded connection, the threaded connection is configured to interconnect tubular members having an outside diameter between and including 508 mm and 1016 mm (between and including 20 inches and 40 inches). It will be evident to the person skilled in the art that the embodiments of the threaded connection according to the invention can be formed by combining the features of any number of the previously defined embodiments of the threaded connection. The invention further relates to a method for hammering interconnected tubular members within soil, such as dry land or within the coast, for the exploration and production of a hydrocarbon well, wherein said tubular members are interconnected through a threaded connection according to the invention, wherein the method comprises hammering the interconnected tubular members after the final tightening of the threaded connection has been achieved and with the pin member positioned on top of the housing member during hammering BRIEF DESCRIPTION OF THE INVENTION The embodiments of the threaded connection and the method according to the invention will be described only by way of example, with reference to the accompanying schematic drawings in which the corresponding reference symbols indicate corresponding parts and in which: Figure 1A schematically shows a cross-sectional view of one embodiment of a pin member of a threaded connection according to the invention. Figure IB schematically shows an enlarged view of part of the threaded portion of the pin and the pin nose of the pin member of Figure 1I. Figures 1C and ID schematically show the same enlarged view of part of the threaded portion of the pin and the external shoulder of the pin member from Figure 1A. Figure 1E schematically shows an additional enlarged view of part of the threaded portion of the pin of the pin member of Figure 1A. Figure 2A schematically shows a cross-sectional view of one embodiment of a box element of a threaded connection according to the invention. Figure 2B schematically shows an enlarged view of part of the threaded portion of the box and the internal shoulder of the box member of Figure 2A. Figures 2C and 2D schematically show the same enlarged view of part of the threaded box portion and box nose of the box member from Figure 2A. Figure 2E schematically shows an additional enlarged view of part of the threaded box portion of the box member in Figure 2A. Figure 3A schematically shows a cross-sectional view of the pin member of Figures 1A-E and the box member of Figures 2A-E connected to tubular members. Figure 3B schematically shows a cross-sectional view of one embodiment of the threaded connection according to the invention, comprising the pin member and the box member of Figure 3A. Figure 3C schematically shows an enlarged view of the threaded portion of the mating pin and the threaded portion of the threaded connection box in Figure 3B. Figure 3D schematically shows an enlarged view of the external shoulder and nose of the threaded connection box in Figure 3B. Figure 3E schematically shows an enlarged view of the inner shoulder and pin nose of the threaded connection in Figure 3B. Figure 3F schematically shows an alternative embodiment of the engaged pin threaded portion and the box threaded portion of the threaded connection of Figure 3B. / b / CLn / zznz / B / YiAi DETAILED DESCRIPTION OF THE INVENTION Figures 3A-3E show an embodiment of the threaded connection 1 according to the invention. This threaded connection 1 comprises the pin member 5 shown in Figures 1A-1E and the box member 9 shown in Figures 2A-2E. The threaded connection 1 is configured for hammering interconnected tubular members 2 into the ground, such as on land, for the exploration and production of a hydrocarbon well. Figures 1A-1E show cross-sectional views of the pin member 5 of the threaded connection 1. The pin member 5 comprises an external shoulder 6, a pin nose 7, and a tapered threaded portion of 4 pin 8 located between the outer shoulder 6 and the pin nose 7 when viewed along the central axis 24. The external shoulder 6 comprises a first external shoulder surface 61, a second external shoulder surface 62, and a shoulder retaining surface 63. The first external shoulder surface 61 is located at a first radial shoulder distance Drsl from the center axis 24 and at a first axial shoulder distance Dasl from the threaded portion of pin 8 (see Figure ID). The second external shoulder surface 62 is located at a second radial shoulder distance Drs2 from the center axis 24 and at a second axial shoulder distance Das2 from the threaded portion of pin 8. The first radial shoulder distance Drsl is greater than the second radial shoulder distance Drs2. The first axial shoulder distance Dasl is less than the second axial shoulder distance Das2.The first complete external shoulder surface 61 is located at a greater radial distance from the central axis 24 than the second external shoulder surface 62; the first complete external shoulder surface 61 is located at a smaller axial distance from the threaded portion of the pin 8 than the second external shoulder surface 62. The shoulder retention surface 63 is located between the first external surface of the shoulder 61 and the second external surface of the shoulder 62. The shoulder retention surface 63 is located between the first external surface of the shoulder 61 and the second external surface of the shoulder 62 when viewed axially along the central axis 24 and when viewed radially with respect to the central axis 24. Figures 2A-2E show cross-sectional views of the box member 9 of the threaded connection 1. The box member 9 comprises an internal shoulder 10, a box nose 11, and a tapered threaded portion of box 11 located between the internal shoulder 10 and the box nose 11 when viewed along the centerline 24. The nose of the housing 11 comprises a first housing nose surface 81, a second housing nose surface 82, and a housing retaining surface 83. The first housing nose surface 81 is located at a first housing radial distance Drbl from the center axis 24 and at a first housing axial distance Dabl from the threaded portion of housing 12 (see Figure 2D). The second housing nose surface 82 is located at a second housing radial distance Drb2 from the center axis 24 and a second housing axial distance Dab2 from the threaded portion of housing 12. The first housing radial distance Drbl is greater than the second housing radial distance Drb2. The first housing axial distance Dabl is less than the second housing axial distance Dab2.The first nose surface of the complete case 81 is located at a greater radial distance from the central axis 24 than the second nose surface of the case 82, and the first nose surface of the complete case 81 is located at a smaller axial distance from the threaded portion of case 12 than the second nose surface of case 82. The retaining surface of box 83 is located between the first nose surface of box 81 and the second nose surface of box 82. The retaining surface of box 83 is located between the first nose surface of box 81 and the second nose surface of box 82 when viewed in the axial direction along axis 24 and when viewed in the radial direction with respect to the central axis 24. The first external shoulder surface 61 and the first box nose surface 81 extend perpendicular to the central axis 24 of the threaded connection 1. This facilitates the maintenance of the structural integrity of the threaded connection 1 when the first external shoulder surface 61 and the first box nose surface 81 are in contact with each other in the final adjustment 16 of the transfer forces during hammering. The second external shoulder surface 62 and the second box nose surface 82 extend perpendicularly to the central axis 24 of the threaded connection 1. This facilitates the maintenance of the structural integrity of the threaded connection 1 in the situation where the second external shoulder surface 62 and the second box nose surface 82 come into contact with each other during hammering. Figures ID and 2D show that the first outer shoulder surface 61 extends under an angle λι of 90 degrees with respect to the central axis 24, the first box nose surface 81 extends under an angle δι of 90 degrees with respect to the central axis 24, the second outer shoulder surface 62 extends under an angle λ> of 90 degrees with respect to the central axis 24, and the second box nose surface 82 extends under an angle 62 of 90 degrees with respect to the central axis 24. The angles λι, Δι, δι and 62 are shown in relation to the virtual parallel lines 70 that extend parallel to the central axis 24. The shoulder retention surface 63 extends at an angle φ between and including 5 degrees and 11 degrees with respect to the centerline 24 of the threaded connection 1. The angle φ is shown in Figure ID with respect to a virtual parallel line 70 extending parallel to the centerline 24. The box retention surface 83 extends at an angle ε between and including 5 degrees and 11 degrees with respect to the centerline 24 of the threaded connection 1. The angle ε is shown in Figure 2D with respect to a virtual parallel line 70 extending parallel to the centerline 24. The pin threaded portion 8 and the box threaded portion 12 are configured to engage with each other during the rotary forming of the threaded connection 1 (see Figure 3B). The pin threaded portion 8 (see Figure 1E) and the box threaded portion 12 (see Figure 2E) comprise hook-profile threads 13 that provide radial interference between the crests 14 of the pin threaded portion 8 and the base 15 of the box threaded portion 12, and between the crests 14 of the box threaded portion 12 and the base 15 of the pin threaded portion 8 in the final fit 16 of the threaded connection 1 (see Figure 3C). In an alternative embodiment of the threaded connection 1 according to the invention, the engaged threads 13 provide, in the final fit 16, radial interference only between the crests 14 of the threaded pin portion 8 and the base 15 of the threaded box portion 12 or only between the crests 14 of the threaded box portion 12 and the base 15 of the threaded pin portion 8. The latter alternative embodiment is shown in Figure 3F. This embodiment comprises a separation between the crests 14 of the threaded pin portion 8 and the base 15 of the threaded box portion 12. The hook profile threads 13 have a positive angle on the inlet flank of the load flanks 18 and a negative angle on the load flank of the load flanks 17. Opposite the load flanks 17 of the hook profile threads 13 of the threaded portion of pin 8 and the threaded portion of the box 12 are in contact with each other and opposite the inlet flanks 18 of the hook profile threads 13 of the threaded portion of pin 8 and the threaded portion of the box 12 are located at a flank distance 19 from each other in the final fit 16 of the threaded connection 1 (see Figure 3C). The pin member 5 comprises an internal pin guide surface 93 located between the threaded pin portion 8 and the pin nose 7 and an external pin guide surface 94 located between the threaded pin portion 8 and the external shoulder 6. The internal pin guide surface 93 is provided in a section 31 of the pin lip of the pin member 5. The box element 9 comprises an internal box guide surface 95 located between the threaded box portion 12 and the internal shoulder 10 and an external box guide surface 96 located between the threaded box portion 12 and the box nose 11. The external box guide surface 96 is provided in a box shoulder section 30 of the box member 9. The pin guide inner surface 93 and the case guide inner surface 95 are configured to move relative to each other during adjustment and face each other in final adjustment 16. The pin guide outer surface 94 and the case guide outer surface 96 are configured to move alongside each other during adjustment and face each other in final adjustment 16. Threaded connection 1 is at the final fit 16 free of any seal located between the mating pin and the threaded portions of the housing 8 and 12 and the nose of pin 7. The seal-free area is indicated by reference number 22. In the embodiment shown, threaded connection 1 is at the final fit 16 also free of any seal located between the mating pin and the threaded portions of the housing 8 and 12 and the nose of the housing 11. The tip of the housing 11 is in contact with the external shoulder 6 at the final fitting 16 of the threaded connection 1 (see Figure 3D). The first external shoulder surface 61 and the first nose surface of the housing 81 are in contact with each other at the final fitting 16 of the threaded connection 1. The second nose surface of the housing 82 is located at an external shoulder distance 25 from the second external shoulder surface 62 at the final fitting 16 of the threaded connection 1. The fact that threaded connection 1 is configured to have the nose of box 11, more specifically the first nose surface of box 81, in contact with the external shoulder 6, more specifically the first external shoulder surface 61, at final fit 16 allows it to be determined during the rotational adjustment of threaded connection 1 when final fit 16 is achieved by checking whether the nose of box 11 is in contact with the external shoulder 6. This is an effective and efficient way to determine when the final fit 16 of threaded connection 1 is reached. This check can be performed using a suitable feeler gauge. For threaded connections 1 that will be hammered, it is very important that the correct configuration of the end fitting 16 is achieved to ensure that the impact forces induced by hammering are transferred along the correct path from the pin 5 to the box member 9. If the threaded connection 1 is driven into the ground without the outer shoulder 6 and the box nose 11 being in contact with each other, the impact forces created during hammering would be transferred primarily from the pin 5 to the box member 9 through the threaded portions 8 and 12 of the fitted pin and box. This creates a high risk of damage to the threaded portions 8 and 12 of the pin and box, for example, from abrasion and plastic deformation. In use, the tubular members, which are interconnected via threaded connection 1, are driven into the ground after the final setting 16 of threaded connection 1 has been achieved. As mentioned, this ensures that the impact forces induced by hammering are transferred along the correct path from the pin member 5 to the box member 9. The pin member 5 is positioned on top of the box member 9 during hammering. In this situation, the impact forces are transferred primarily from the pin member 5 to the box member 9 through the external shoulder 6 and the box nose 11, which are in contact with each other. The fact that the impact forces induced by hammering first move through the external shoulder 6, due to its contact with the box nose 11, provides a relevant degree of protection against impact forces for the mating pin and the threaded box portions 8 and 12. Due to the fact that the first external shoulder surface 61 and the first box nose surface 81 are located at a greater radial distance from the threaded portions 8 and 12 than the second external shoulder surface 62 and the second box nose surface 82, impact forces during hammering are transferred through the threaded connection 1 to an increased radial distance from the threaded portions 8 and 12. This provides an additional degree of protection for the mating threaded portions 8 and 12 against impact forces. The surface of the shoulder retainer 63 and the surface of the box retainer 83 face each other at the final adjustment 16 of the threaded connection 1. The surface of the shoulder retainer 63 and the surface of the box retainer 83 are configured to block the radial movement of the box nose 11 away from the central axis 24. The surface of the shoulder retainer 63 and the surface of the box retainer 83 provide additional protection against damage caused by overpressure within the threaded connection 1. The surface of the shoulder retainer 63 and the surface of the box retainer 83 protect against deformation due to internal overpressure of the threaded connection 1 by blocking the box nose 11 and preventing outward displacement.Preventing radial movement of the nose of box 11 away from the central axis 24 is crucial for maintaining the structural integrity of the threaded connection 1 required for hammering. Furthermore, such radial movement of the nose of box 11 can damage the last engaged teeth of the engaged threaded portions 8 and 12. The first external shoulder surface 61 and the first box nose surface 81 have an axial interference less than or equal to 0.2 mm at the final fit 16 of the threaded connection 1. The external shoulder distance 25 between the second external shoulder surface 62 and the second box nose surface 82 is less than or equal to 0.3 mm at the final fit 16 of the threaded connection 1. The external shoulder distance 25 is measured in the axial direction along the center axis 24. The nose of pin 7 is located at an internal shoulder distance 23 from the internal shoulder 10 at the final setting 16 of the threaded connection 1 (see Figure 3E). This ensures that the impact forces from hammering are transferred primarily through the threaded connection at the increased radial distance between the first external shoulder surface 61 and the first box nose surface 81. In Figure 3B, the threaded connection 1 interconnects two tubular members 2 that are attached to the pin member 5 and the box member 9 by weld seams 3. The horizontal direction 71 and the vertical direction 72 are indicated. The threaded connection 1 is configured to be driven into the ground after the final setting 16 has been reached and with the pin member 5 positioned above the box member 9 during hammering. In this situation, the hammering will occur in the upper tubular member 2 in the direction shown by arrow 4 in Figure 3B.Threaded connection 1 is configured to interconnect tubular members 2 having an outside diameter between and including 508 mm and 1016 mm (between and including 20 inches and 40 inches). The radial interference between the crests 14 of the threaded portion of pin 8 and the base 15 of the threaded portion of the box 15, and between the crests 14 of the threaded portion of the box 12 and the base 15 of the threaded portion of pin 8 at the end fitting 16 of the threaded connection 1, is less than 0.25 mm, in particular less than 0.2 mm, and even more specifically between 0.05 mm and 0.15 mm. Preferably, this radial interference is 0.1 mm. The radial interference enhances the energy-absorbing damping function of the mating pin and the threaded portions 8 and 12 of the box. The threaded connection 1 is configured so that the pin nose 7 and the internal shoulder 10 come into contact with each other, while the facing load flanks 18 are not in contact with each other in the final setting 16 and under a predetermined compressive force working on the threaded connection 1 in a central axis direction 24. When viewed along the central axis 24, the facing mouth flanks 18 are farther apart than the pin nose 7 and the inner shoulder 10. In this way, the nose of pin 7 and the inner shoulder 10 protect the engaged pin and the threaded portions of the case 8 and 12 against unwanted high-impact forces during hammering. The tests revealed that surprisingly good results were achieved when the internal shoulder distance 23 is greater than 0 mm and less than 0.3 mm at the final fit 16 of the threaded connection 1. Preferably, the internal shoulder distance 23 is greater than 0 mm and less than 0.24 mm at the final fit 16 of the threaded connection 1. These tests also indicated that surprisingly good results were achieved when the flank distance 19 is between and includes 0.1 mm and 0.25 mm at the final fit 16 of the threaded connection 1. The internal shoulder distance 23 and the flank distance 19 are measured in the axial direction along the central axis 24. Pin member 5 comprises an internal surface 38 of the pin member, housing member 9 comprises an internal surface 39 of the housing member, and the internal surface 38 of the pin member and the internal surface 39 of the housing member extend in alignment with each other at the final fit 16 of the threaded connection 1 (see Figure 3B). The inner surface of the pin member 38 and the inner surface of the box member 39 are located at a radius R1 of the inner member surface from the center axis 24 (see Figures 1A and 2A). The pin member 5 comprises a pin tube portion 40 having an outer surface 41 of the pin tube portion located at the radius R2 of an outer surface of the pin tube portion 41 from the center axis 24. The pin member 5 comprises a shoulder section of the pin member 33 forming the outer shoulder 6 and located between the pin tube portion 40 and the threaded portion of the pin 8. The pin member 5 comprises a pin connector portion 43 extending from the shoulder section of the pin member 33 to the nose of the pin 7. 2xR2 (R2 times two) is between and includes 508 mm and 1016 mm (between and includes 20 and 40 inches). The box member 9 comprises a box tube portion 44 having an outer surface 45 of the box tube portion located at a radius R3 of the outer surface of the box tube portion from the center axis 24. The box member 9 comprises a box member shoulder section 46 forming the inner shoulder 10 and located between the box tube portion 44 and the threaded portion of the box 12. The box member 9 comprises a box connector portion 47 extending from the box member shoulder section 46 to the nose 11. 2xR3 (R3 times two) is between and includes 508 mm and 1016 mm (between and includes 20 inches and 40 inches). In the final adjustment 16, the pin connector portion 43 and the box connector portion 47 together define an external connector surface 48 located at an external connector radius R4 from the central axis 24. The external connector radius R4 is larger than each of the outer surface radius R2 of the pin tube portion 41 and the outer surface radius R3 of the box tube portion. The external radius R4 of the connector is between, and includes, R2 + 13 mm and R2 + 19 mm. The external radius R4 of the connector is between, and includes, R3 + 13 mm and R3 + 19 mm. The radius R2 of the outer surface of the pin tube portion 41 is equal to the radius R3 of the outer surface of the box tube portion. A pin transition area 49 having a pin transition radius R5 is located between the outer surface of the pin tube portion 41 and the outer surface of the connector 48. A box transition area 50 having a box transition radius R6 is located between the outer surface of the box tube portion 45 and the outer surface of the connector 48. The pin transition radius R5 is equal to the box transition radius R6. In other embodiments of the threaded connection according to the invention, the pin transition radius R5 may be greater than the box transition radius R6. The pin transition radius R5 is preferably between and includes 2 mm and 20 mm, and the box transition radius R6 is preferably between and includes 2 mm and 8 mm. The pin member 5 comprises an outer pin connector surface 55 and the first outer shoulder surface 61 extends to or adjacent to the outer pin connector surface 55. The box member 9 comprises an outer box connector surface 56 and the first box nose surface 81 extends to or adjacent to the outer box connector surface 56. The outer surface 55 of the pin connector and the outer surface 56 of the box connector together form the outer surface 48 of the connector. The pin member 5 and the box member 9 comprise a single-pitch thread 51 formed by the pin threaded portion 8 and the box threaded portion 12, respectively. This means that no further thread pitches are provided in the threaded connection 1. The pin and socket threaded portions 8 and 12 preferably extend under a taper angle α of between 6 and 11 degrees with respect to the center axis 24 (see Figures 1B and 2B). The taper angle α is measured with respect to the centerline 101 of the pin threaded portion 8 and the centerline 102 of the socket threaded portion 12 (see Figures 1E and 2E). The taper angle α is shown relative to a virtual parallel line 70 that extends parallel to the center axis 24. In the hammering position of the threaded connection 1 shown in Figure 3B, the virtual parallel line 70 extends in the vertical direction 72. The threaded portion of pin 8 and the threaded portion of box 12 comprise multiple threads that are configured to be formed by rotary fit between and including 180 degrees and 360 degrees. The internal shoulder 10 comprises an internal butt surface 52 facing a pin nose butt surface 53 of the pin nose 7 and located at the internal shoulder distance 23 in the final fit 16, and the internal butt surface 52 and the pin tip butt surface 53 preferably extend under a butt angle β of between and including 4 degrees and 12 degrees with respect to a virtual perpendicular line 73 extending perpendicular to the center axis 24 of the threaded connection 1 (see Figures 1B and 2B). In the hammering position of the threaded connection 1 shown in Figure 3B, the virtual perpendicular line 73 extends in the horizontal direction 71. The inner stopping surface 52 and the pin nose stopping surface 53 are tilted away from the outer shoulder 6 when viewed along the virtual perpendicular line 73 in a direction away from the central axis 24. The stop angle β of the inner stop surface 52 and the stop surface of the pin nose 53 ensure that the pin nose 7 tends to move towards the box member 9 rather than away from it. As required, detailed embodiments of the present invention are described herein; however, it should be understood that the embodiments described are merely illustrative, and the invention can be implemented in various ways. Therefore, the specific structural and functional details described herein should not be construed as limiting, but merely as a basis for the claims and as a representative basis for teaching a person skilled in the art how to employ the present invention in virtually any suitably detailed structure. Furthermore, the terms and phrases used herein are not intended to be limiting, but rather to provide a clear and understandable description of the invention. The terms "a" or "an," as used herein, are defined as one or more than one. The terms "multiple" and "plurality," as used herein, are defined as two or more. The term "other," as used herein, is defined as at least one or more. The terms "including" and / or "having," as used herein, are defined as comprising (i.e., open language, without excluding other elements or stages). Any reference sign in the claims shall not be construed as limiting the scope of the claims or the invention. It will be evident to those skilled in the art that various modifications can be made to the threaded connection and the method shown according to the invention without departing from the scope as defined in the 15 claims.

Claims

1. A threaded connection for hammering interconnected tubular members into soil, such as dry land or on the coast, for the exploration and production of a hydrocarbon well, characterized in that said threaded connection comprises: - a pin member comprising an external shoulder, a pin nose, and a tapered threaded pin portion located between the external shoulder and the pin nose; - a box member comprising an internal shoulder, a box nose, and a tapered threaded box portion located between the internal shoulder and the box nose, wherein - the threaded pin portion and the threaded box portion are configured to engage with each other during the rotational tightening of the threaded connection.- the pin threaded portion and the box threaded portion comprise hook-profile threads that provide radial interference between the crests of the pin threaded portion and the base of the box threaded portion and / or between the crests of the box threaded portion and the base of the pin threaded portion in the final fit of the threaded connection, - the facing load-bearing flanks of the hook-profile threads of the pin threaded portion and the box threaded portion are in contact with each other in the final fit of the threaded connection, - the facing socket flanks of the hook-profile threads of the pin threaded portion and the box threaded portion are flank-width apart in the final fit of the threaded connection, - the threaded connection is in the final fit free of any seal located between the mating pin and the box threaded portions and the pin nose,- the nose of the box is in contact with the external shoulder in the final adjustment of the threaded connection, and - the nose of the pin is located at an internal distance from the shoulder of the internal shoulder in the final adjustment of the threaded connection.

2. A threaded connection according to claim 1, characterized in that: - the threaded connection defines a central axis in the final adjustment of the threaded connection; - the external shoulder comprises a first external shoulder surface, a second external shoulder surface, and a shoulder retaining surface; - the first external shoulder surface is located at a first radial shoulder distance from the central axis and a first axial shoulder distance from the threaded portion of the pin; - the second external shoulder surface is located at a second radial shoulder distance from the central axis and a second axial shoulder distance from the threaded portion of the pin; - the first radial shoulder distance is greater than the second radial shoulder distance; - the first axial shoulder distance is less than the second axial shoulder distance.- The shoulder retention surface is located between the first external shoulder surface and the second external shoulder surface, - The case nose comprises a first case nose surface, a second case nose surface, and a case retention surface, - The first case nose surface is located at a first radial distance from the case centerline and a first axial distance from the case threaded portion, - The second case nose surface is located at a second radial distance from the case centerline and a second axial distance from the case threaded portion, - The first radial distance from the case is greater than the second radial distance from the case, - The first axial distance from the case is less than the second axial distance from the case,— the retaining surface of the box is located between the first surface of the box nose and the second surface of the box nose, - the first outer surface of the shoulder and the first surface of the box nose are in contact with each other in the final adjustment of the threaded connection, - the second surface of the box nose is located at a distance from the outer shoulder of the second outer shoulder surface in the final adjustment of the threaded connection, and - the surface of the shoulder retainer and the surface of the box retainer face each other in the final adjustment of the threaded connection.

3. Threaded connection according to claim 2, characterized in that the first external shoulder surface and the first nose surface of the box extend perpendicularly to the central axis of the threaded connection.

4. Threaded connection according to claim 2 or 3, characterized in that the second outer shoulder surface and the second nose surface of the box extend perpendicularly to the central axis of the threaded connection.

5. Threaded connection according to any of claims 2-4, characterized in that the first external shoulder surface and the first box nose surface have an axial interference less than or equal to 0.2 mm in the final fit of the threaded connection.

6. Threaded connection according to any of claims 2-5, characterized in that the distance of the external shoulder between the second surface of the external shoulder and the second surface of the box nose is less than or equal to 0.3 mm in the final assembly of the threaded connection.

7. Threaded connection according to any of claims 2-6, characterized in that - the shoulder retainer surface extends under an angle φ of between and comprising 5 and 11 degrees, with respect to the central axis of the threaded connection, and - the case retainer surface extends under an angle ε of between and comprising 5 degrees and 11 degrees, with respect to the central axis of the threaded connection.

8. Threaded connection according to any of claims 2-7, characterized in that the shoulder retaining surface and the case retaining surface are configured to block radial movement of the case nose away from the central axis.

9. Threaded connection according to any of the preceding claims, characterized in that the threaded connection is in its final adjustment free of any seal located between the threaded portions of the coupled pin and housing and the nose of the housing.

10. Threaded connection according to any of the preceding claims, characterized in that - the pin member comprises an internal pin guide surface located between the threaded portion of the pin and the pin nose and an external pin guide surface located between the threaded portion of the pin and the external shoulder, - the box member comprises an internal box guide surface located between the threaded portion of the box and the internal shoulder and an external box guide surface located between the threaded portion of the box and the box nose, - the internal pin guide surface and the internal box guide surface are configured to move relative to each other during adjustment and face each other in the final adjustment, and - the external pin guide surface and the external box guide surface are configured to move relative to each other during adjustment and face each other in the final adjustment.

11. Threaded connection according to any of claims 2-10, characterized in that the box element comprises a box connector outer surface and the first box nose surface extends to or adjacent to the box connector outer surface.

12. Threaded connection according to any of claims 2-11, characterized in that the pin member comprises an outer pin connector surface and the first outer shoulder surface extends to or adjacent to the outer pin connector surface.

13. Threaded connection according to any of the preceding claims, characterized in that the radial interference between the crests of the threaded portion of the pin and the base of the threaded portion of the housing and / or between the crests of the threaded portion of the housing and the base of the threaded portion of the pin in the final adjustment of the threaded connection is less than 0.25 mm, in particular less than 0.2 mm, even more particularly between and including 0.05 mm and 0.15 mm.

14. Threaded connection according to any of the preceding claims, characterized in that the threaded connection is configured so that the pin nose and the inner shoulder are in contact with each other while the facing socket flanks are not in contact with each other in the final adjustment and under a predetermined compressive force working on the threaded connection in a central axis direction.

15. Threaded connection according to any of the preceding claims, characterized in that when viewed along the central axis, the facing socket flanks are further apart from each other than the pin nose and the inner shoulder.

16. Threaded connection according to any of the preceding claims, wherein the internal shoulder distance is greater than 0 mm and less than 0.3 mm, preferably greater than 0 mm and less than 0.24 mm, at the final adjustment of the threaded connection.

17. Threaded connection according to any of the preceding claims, characterized in that the flank distance is between and includes 0.1 mm and 0.25 mm at the final adjustment of the threaded connection.

18. Threaded connection according to any of the preceding claims, characterized in that the pin member comprises an inner surface of the pin member, the box member comprises an inner surface of the box member, and the inner surface of the pin member and the inner surface of the box member extend flush with each other in the final fitting of the threaded connection.

19. Threaded connection according to claim 18, characterized in that the inner surface of the pin member and the inner surface of the box member are both located at a radius R1 of the inner surface of the member from the central axis.

20. Threaded connection according to any of the preceding claims, characterized in that: — the pin member comprises a pin tube portion having an outer surface of the pin tube portion located at a radius R2 from the center axis, — the pin member comprises a pin member shoulder section forming the outer shoulder and located between the pin tube portion and the threaded portion of the pin, — the pin member comprises a pin connector portion extending from the shoulder section of the pin member to the pin nose, — the box member comprises a box tube portion having an outer surface of the box tube portion located at a radius R3 from the center axis,- the box member comprises a box member shoulder section that forms the inner shoulder and is located between the box tube portion and the threaded portion of the box, - the box member comprises a box connector portion that extends from the box member shoulder section to the box nose, - in the final fit, the pin connector portion and the box connector portion together define an external connector surface located at an external connector radius R4 from the center axis, and - the external connector radius R4 is greater than each of the radii R2 of the external surface of the pin tube portion and the radius R3 of the external surface of the box tube portion.

21. Threaded connection according to claim 20, characterized in that the external radius R4 of the connector is between and includes R2 + 13 mm and R2 + 19 mm.

22. Threaded connection according to claim 20 or 21, characterized in that the external radius R4 of the connector is between and includes R3 + 13 mm and R3 + 19 mm.

23. Threaded connection according to any of claims 20-22, characterized in that the radius R2 of the outer surface of the pin tube portion is equal to the radius R3 of the outer surface of the box tube portion.

24. Threaded connection according to any of the preceding claims, characterized in that - a pin transition area having a pin transition radius R5 is located between the outer surface of the pin tube portion and the outer surface of the connector, - a box transition area having a box transition radius R6 is located between the outer surface of the box tube portion and the outer surface of the connector, and - the pin transition radius R5 is equal to or greater than the box transition radius R6.

25. Threaded connection according to claim 24, characterized in that the transition radius of the pin R5 is between and includes 2 mm and 20 mm and the transition radius of the box R6 is between and includes 2 mm and 8 mm.

26. Threaded connection according to any of the preceding claims, characterized in that the pin member and the box member comprise a single-pitch thread formed by the threaded portion of the pin and the threaded portion of the box, respectively.

27. Threaded connection according to any of the preceding claims, characterized in that the threaded portions of pin and socket extend under a tapered angle α of between and including 6 degrees and 11 degrees with respect to the central axis.

28. Threaded connection according to any of the preceding claims, characterized in that the threaded pin portion and the threaded box portion comprise multiple threads that are configured to be formed by rotary fit between and including 180 degrees and 360 degrees.

29. Threaded connection according to any of the preceding claims, characterized in that the internal shoulder comprises an internal butt surface opposite a pin nose butt surface and located at the internal shoulder distance in the final fit, and the internal butt surface and the pin nose butt surface extend under a butt angle of between and including 4 degrees and 12 degrees with respect to the center axis of the threaded connection.

30. Threaded connection according to any of claims 2-29, characterized in that the threaded connection is configured to achieve the final fit when contact is achieved between the first surface of the / b / CLn / zznz / e / YiAi case nose and the first surface of the external shoulder during rotary adjustment.

31. Threaded connection according to any of the preceding claims, characterized in that the threaded connection is configured to be driven into the ground after the final adjustment has been achieved and with the pin member positioned on top of the housing member during hammering.

32. Threaded connection according to any of the preceding claims, characterized in that the pin member comprises a pin tube portion having an outer surface of the pin tube portion located at a radius R2 of the outer surface of the pin tube portion from the central axis and 2xR2 is between and includes 508 mm and 1016 mm (between and includes 20 inches and 40 inches).

33. Threaded connection according to any of the preceding claims, characterized in that the box member comprises a box tube portion having an outer surface of the box tube portion located at a radius R3 of the outer surface of the box tube portion from the central axis and 2xR3 is between and includes 508 mm and 1016 mm (between and includes 20 inches and 40 inches).

34. Threaded connection according to any of the preceding claims, characterized in that the threaded connection is configured to interconnect tubular members having an outside diameter of between and including 508 mm and 1016 mm (between and including 20 and 40 inches).

35. Method for hammering interconnected tubular members 5 in soil, such as dry land or on the coast, for the exploration and production of a hydrocarbon well, wherein said tubular members are interconnected through a threaded connection according to any of the preceding claims, 10 characterized in that the method comprises hammering the interconnected tubular members after the final tightening of the threaded connection has been achieved and with the pin member placed on top of the box member during hammering.