ENGINEERED MATERIALS FOR DRILL ROD APPLICATIONS
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.
1 . A drill string component, comprising:
an integral tubular metallic body comprising a first end, an opposing second end, a cross-sectional area, 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 cross-sectional area and 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;
wherein the metallic body cross-sectional area and the composite lining cross-sectional area comprise a total cross-sectional area.
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 metallic body cross-sectional area comprises at least 50% of the total cross-sectional area.
6 . The drill string component of claim 5 , wherein the metallic body cross-sectional area comprises at least 70% of the total cross-sectional area.
7 . The drill string component of claim 5 , wherein the composite lining cross-sectional area comprises from about 10% to about 50% of the total cross-sectional area.
8 . The drill string component of claim 1 , wherein the composite lining is configured to provide up to about 44% of the stiffness.
9 . The drill string component of claim 1 , wherein the tensile strength of the composite lining is between about 1.5 and about 2.5 that of steel.
10 . The drill string component of claim 9 , wherein the tensile strength of the composite lining is between about 2 times that of steel.
11 . The drill string component of claim 1 , wherein the drill string component further comprises a midbody.
12 . The drill string component of claim 11 , wherein the midbody has a modulus of about 1.50 times that of a conventional steel midbody.
13 . The drill string component of claim 12 , wherein the midbody has a strength of about 1.17 times that of a conventional steel midbody.
14 . The drill string component of claim 11 , wherein the midbody has a strength of about 1.10 times that of a conventional steel midbody.
15 . The drill string component of claim 14 , wherein the composite lining is configured to absorb the majority of a bending load.
16 . The drill string component of claim 16 , wherein the composite lining is configured to absorb the majority of a torque load.
17 . The drill string component of claim 1 , wherein the drill string component is configured to be a percussive drill rod.
18 . The drill string component of claim 1 , wherein the drill string component is configured to be a wireline coring drill rod.
19 . The drill string component of claim 1 , wherein both the first end and the second end comprise a box end.
20 . The drill string component of claim 1 , wherein both the first end and the second end comprise a pin end.