Torque shoulder for tubular goods connection

Abstract

A tubular connection includes either or both of a pin or a box. The pin includes an external male threaded zone having external male threads disposed on a portion of the pin, and the box includes an internal female threaded zone having internal female threads disposed on a portion of the first box. The internal female threads are configured to engage with the external male threads of the first pin. At least one of the pin or the box includes a torque shoulder surface that includes a surface roughness that is greater than or equal to 100 microns. In some instances, the torque shoulder surface can include a knurled surface profile that is continuous along the torque shoulder surface. In certain instances, a second mating torque shoulder surface has a surface roughness greater than or equal to 100 microns.

1 . A tubular connection comprising:
 a first pin with an external male threaded zone having external male threads disposed on a portion of the pin; and   a first box with an internal female threaded zone having internal female threads disposed on a portion of the first box, the internal female threads configured to engage with the external male threads of the first pin;   wherein at least one of the first pin or the first box comprises a first torque shoulder surface comprising a surface roughness greater than or equal to 100 microns.   
     
     
         2 . The tubular connection of  claim 1 , wherein the first torque shoulder surface comprises a knurled surface profile. 
     
     
         3 . The tubular connection of  claim 2 , wherein the knurled surface profile is continuous along the first torque shoulder surface. 
     
     
         4 . The tubular connection of  claim 1 , wherein the first torque shoulder surface comprises a laser cut, stamped, machined, or blasted surface profile. 
     
     
         5 . The tubular connection of  claim 1 , wherein one of the first pin or the first box comprises the first torque shoulder surface, and the other of the first pin or the first box comprises a second torque shoulder surface, the second torque shoulder surface configured to engage the first torque shoulder surface. 
     
     
         6 . The tubular connection of  claim 5 , wherein the second torque shoulder surface comprises a surface roughness greater than or equal to 100 microns. 
     
     
         7 . The tubular connection of  claim 5 , wherein the second torque shoulder surface comprises a knurled surface profile. 
     
     
         8 . The tubular connection of  claim 7 , wherein the knurled surface profile is continuous along the second torque shoulder surface. 
     
     
         9 . The tubular connection of  claim 5 , wherein the second torque shoulder surface comprises a laser cut, stamped, machined, or blasted surface profile. 
     
     
         10 . The tubular connection of  claim 5 , wherein the first torque shoulder surface and the second torque shoulder surface are at a respective one of a first longitudinal end of the first pin or a second longitudinal end of the first box. 
     
     
         11 . The tubular connection of  claim 10 , wherein the first longitudinal end of the first pin is a distal longitudinal end of the first pin, and the second longitudinal end of the first box is a proximal longitudinal end of the first box. 
     
     
         12 . The tubular connection of  claim 10 , wherein the first pin comprises a third torque shoulder surface proximate to a third longitudinal end of the first pin opposite the first longitudinal end, the first box comprises a fourth torque shoulder surface proximate to a fourth longitudinal end of the first box opposite the second longitudinal end, and at least one of the third torque shoulder surface or the fourth torque shoulder surface comprises a surface roughness greater than or equal to 100 microns, the fourth torque shoulder surface configured to engage the third torque shoulder surface. 
     
     
         13 . The tubular connection of  claim 12 , wherein the at least one of the third torque shoulder surface or the fourth torque shoulder surface comprises a knurled surface profile. 
     
     
         14 . The tubular connection of  claim 13 , wherein the knurled surface profile is continuous along the at least one of the third torque shoulder surface or the fourth torque shoulder surface. 
     
     
         15 . The tubular connection of  claim 1 , further comprising:
 a second pin with a second external male threaded zone having second external male threads disposed on a portion of the second pin; and   a coupling box connector comprising the first box and a second box, the second box having an internal female threaded zone having internal female threads disposed on a portion of the second box, the internal female threads configured to engage with the external male threads of the second pin;   wherein   the first pin has the first torque shoulder surface; and   the second pin has a second torque shoulder surface, where the second torque shoulder surface is configured to engage the first torque shoulder surface of the first pin.   
     
     
         16 . The tubular connection of  claim 15 , wherein the second torque shoulder surface comprises a surface roughness greater than or equal to 100 microns. 
     
     
         17 . The tubular connection of  claim 15 , wherein the second torque shoulder surface comprises a knurled surface profile. 
     
     
         18 . The tubular connection of  claim 17 , wherein the knurled surface profile is continuous along the second torque shoulder surface. 
     
     
         19 . (canceled) 
     
     
         20 . (canceled) 
     
     
         21 . A method for forming a tubular connection, the method comprising:
 providing a first pin with an external male threaded zone having external male threads disposed on a portion of the first pin;   providing a first box with an internal female threaded zone having internal female threads disposed on a portion of the first box, the internal female threads configured to engage with the external male threads of the first pin;   wherein
 one of the first pin or the first box has a first torque shoulder surface; and 
 the other of the first pin or the first box has a second torque shoulder surface; and 
   engaging, with the first torque shoulder surface, the second torque shoulder surface to form a tubular connection, at least one of the first torque shoulder surface or the second torque shoulder surface comprising a surface roughness greater than or equal to 100 microns.   
     
     
         22 . A method for forming a tubular connection, the method comprising:
 providing a first pin with an external male threaded zone having external male threads disposed on a portion of the first pin, the first pin having a first torque shoulder surface positioned proximate to a first longitudinal end of the first pin;   providing a second pin with an external male threaded zone having external male threads disposed on a portion of the second pin, the second pin having a second torque shoulder surface positioned proximate to a second longitudinal end of the second pin;   wherein at least one of the first torque shoulder surface or the second torque shoulder surface comprises a surface roughness greater than or equal to 100 microns;   providing a coupling box connector having a first box with an internal female threaded zone having internal female threads disposed on a portion of the first box, the internal female threads configured to engage with the external male threads of the first pin, and having a second box with an internal female threaded zone having internal female threads disposed on a portion of the second box, the internal female threads configured to engage with the external male threads of the second pin;   engaging the external male threads of the first pin with the internal female threads of the first box;   engaging the external male threads of the second pin with the internal female threads of the second box; and   engaging the first torque shoulder surface with the second torque shoulder surface.   
     
     
         23 . (canceled) 
     
     
         24 . (canceled) 
     
     
         25 . (canceled) 
     
     
         26 . (canceled) 
     
     
         27 . (canceled) 
     
     
         28 . (canceled) 
     
     
         29 . (canceled) 
     
     
         30 . (canceled) 
     
     
         31 . (canceled) 
     
     
         32 . (canceled) 
     
     
         33 . (canceled) 
     
     
         34 . (canceled) 
     
     
         35 . (canceled) 
     
     
         36 . (canceled) 
     
     
         37 . (canceled) 
     
     
         38 . (canceled) 
     
     
         39 . (canceled) 
     
     
         40 . (canceled)