Tubular component with a helical abutment

Abstract

A tubular drill stem component including an end element having an axis of revolution and including a threading extending about the axis of revolution, the end element configured to be connected by makeup onto a corresponding end element of another tubular component including a complementary threading, the end element including at least one outer abutment configured to come into contact with a corresponding outer abutment of the other component at an end of makeup, and wherein the outer abutment includes at least one helical surface having an axis of the helix that coincides with the axis of revolution.

1 - 14 . (canceled) 
     
     
         15 : A tubular drill stem component comprising:
 an end element having an axis of revolution and comprising a threading extending about the axis of revolution, the end element configured to be connected by makeup onto a corresponding end element of another tubular component comprising a complementary threading;   the end element comprising at least one outer abutment configured to come into contact with a corresponding outer abutment of the other component at an end of makeup,   wherein the outer abutment comprises at least one helical surface having an axis of the helix that coincides with the axis of revolution.   
     
     
         16 : The component according to  claim 15 , wherein the threading has a thread angle such that the helical surface has a helix angle less than or equal to the thread angle of the threading. 
     
     
         17 : The component according to  claim 15 , wherein the helix angle is in a range of 0.5° to 7°. 
     
     
         18 : The component according to  claim 15 , wherein the sum of the angular portions about the axis of revolution over which the helical surface extends is in a range of 180° to 360°. 
     
     
         19 : The component according to  claim 15 , wherein the end element further comprises a circumferential shoulder connected to at least one of the circumferential ends of the helical surface. 
     
     
         20 : The component according to  claim 19 , wherein the circumferential shoulder comprises at least one substantially planar surface the plane of which forms an angle with the axis of revolution in a range of 0° to 75°. 
     
     
         21 : The component according to  claim 19 , wherein the circumferential shoulder comprises at least one substantially planar surface with a plane parallel to the axis of revolution or that coincides with the axis of revolution. 
     
     
         22 : The component according to  claim 19 , wherein the circumferential shoulder is connected to the helical surface via a fillet radius or an inclined plane. 
     
     
         23 : The component according to  claim 22 , wherein the fillet radius has a radius of curvature in a range of 0.5 to 10.0 millimeters. 
     
     
         24 : The component according to  claim 15 , wherein the end element comprises two abutments, an inner abutment and an outer abutment, each of the two abutments comprising at least one circumferential shoulder. 
     
     
         25 : The component according to  claim 15 , wherein the end element comprises two abutments, an inner abutment and the outer abutment, only the outer abutment comprising a helical surface. 
     
     
         26 : The component according to  claim 15 , wherein the helical surface is at a distance from the threading, a distance between a threading end and the helical surface being at least 8 mm. 
     
     
         27 : A connection comprising two components according to  claim 15 , wherein one of either the outer abutment of a component or the corresponding outer abutment of the other component is disposed at a free distal end of its end element. 
     
     
         28 : The connection comprising two end elements of two components according to  claim 15 , the two components being connected together by makeup of the end element of the first component with the corresponding end element of the second component.