Engineered Materials for Drill Rod Applications

Abstract

Implementations described herein comprise drill rods comprising an integral tubular metallic body having a first ends, an opposing second end, and an elongate midbody extending along a central axis between the first and second ends and where the metallic body defines a central bore that extends along the central axis and has a body inner surface and at least one body bore diameter. In further aspects, the drill rods further comprise an underlying tubular composite lining that has a lining outer surface that is connected to at least the body inner surface of the midbody of the metallic body, the composite lining defining an operative bore that extends along the central axis and has at least one operative bore diameter.

What is claimed is: 
     
         1 . A drill string component, comprising:
 an integral tubular metallic body comprising a first end, an opposing second end, and an elongate midbody extending along a central axis therebetween the first and second ends, the metallic body defining a central bore that extends along the central axis and has a body inner surface and at least one body bore diameter;   an underlying tubular composite lining that has a lining outer surface that is connected to at least the body inner surface of the midbody of the metallic body, the composite lining defining an operative bore that extends along the central axis and has at least one operative bore diameter.   
     
     
         2 . The drill string component of  claim 1 , wherein the first end comprises a box end. 
     
     
         3 . The drill string component of  claim 1 , wherein the second end comprises a pin end. 
     
     
         4 . The drill string component of  claim 3 , wherein the underlying tubular composite lining extends to a terminal end of the pin end of the hollow body. 
     
     
         5 . The drill string component of  claim 1 , wherein the underlying tubular composite lining comprises fibers having a unidirectional orientation. 
     
     
         6 . The drill string component of  claim 5 , wherein the unidirectional orientation further comprises an axial orientation. 
     
     
         7 . The drill string component of  claim 5 , wherein the unidirectional orientation further comprises an angled orientation. 
     
     
         8 . The drill string component of  claim 1 , wherein the underlying tubular composite lining comprises fibers that are cross-laid to form spirals. 
     
     
         9 . The drill string component of  claim 1 , wherein the body bore diameter of the body is substantially constant across an elongate length of the midbody. 
     
     
         10 . The drill string component of  claim 9 , wherein the operative bore diameter is substantially constant across the elongate length of the midbody. 
     
     
         11 . The drill string component of  claim 1 , wherein at least one body bore diameter comprises a first bore diameter and a second bore diameter, and wherein the first bore diameter is less than the second bore diameter. 
     
     
         12 . The drill string component of  claim 11 , wherein the tubular metallic body has a tubular wall, wherein the body inner surface tapers to a middle portion of the midbody from both respective first and second end portions; and wherein the inner surface of the middle portion has the second bore diameter and the respective first and second end portions have the first bore diameter. 
     
     
         13 . The drill string component of  claim 12 , wherein the underlying composite lining has a lining cross-sectional thickness, and wherein the lining cross-sectional thickness is substantially constant across an elongate length of the midbody. 
     
     
         14 . The drill string component of  claim 12 , wherein the tubular wall has a wall cross-sectional thickness and the underlying composite lining has a lining cross-sectional thickness, and wherein the cross-sectional thickness of the wall of the tubular metallic body and the connected tubular composite lining is substantially constant across an elongate length of the midbody. 
     
     
         15 . The drill string component of  claim 12 , wherein the body bore diameter increases across the entire length of the tubular midbody 
     
     
         16 . The drill string component of  claim 16 , wherein the composite lining has a thickness and wherein the thickness of the composite lining is constant across the length of the tubular midbody. 
     
     
         17 . The drill string component of  claim 16 , wherein the tubular metal wall has a thickness and the composite lining has a thickness, and wherein the sum of the thickness of the tubular metal wall and the thickness of the composite lining are constant across the length of the midbody. 
     
     
         18 . The drill string component of  claim 1 , wherein the drill string component is configured to be a percussive drill rod. 
     
     
         19 . The drill string component of  claim 1 , wherein the drill string component is configured to be a coring drill rod. 
     
     
         20 . The drill string component of  claim 1 , wherein both the first end and the second end comprise a box end. 
     
     
         21 . The drill string component of  claim 1 , wherein both the first end and the second end comprise a pin end.