Electrical wiring for drill pipe, casing, and tubing

An apparatus comprising:

• a pin extending along an axis having a preload face that is spaced from an end of the pin, which defines a cylindrical portion having an outer surface, the pin having a plurality of tapered splines that extend outwardly from the outer surface of the cylindrical portion and axially from the preload face, a spline in the plurality of tapered splines having a base at the preload face and a width that narrows towards a tip of the spline;
• a plurality of wires, a first portion of each of the wires running along an exterior surface of the pin in a direction of the axis, a second portion of each of the wires inside the pin extending towards the end of the pin;
• spacers positioned along the exterior surface of the pin, the spacers separating wires in the wires for the first portion of the wires;
• and
• a layer of material covering the spacers and the wires.

A pair of pins comprising:

• a male pin having a first joint section, the first joint section having first holes extending a length of the first joint section and terminating at a first preload face, the male pin having an end that is spaced from the first preload face which defines a first cylindrical portion with an outer surface;
• first wires running along an exterior surface of the male pin, a first wire in the first wires entering a first hole in the first joint section at a first angle relative to the exterior surface of the male pin, wherein the first angle is an acute angle having a value selected from a range of values from about one degree to about five degrees;
• a plug type connectors, a plug type connector in the plug type connectors connected to the first wire, the plug type connector extending from the first preload face;
• a female pin having a second joint section, the second joint section having second holes extending a length of the first joint section and terminating at a second preload face, the female pin having an end that is spaced from the second preload face which defines a second cylindrical portion with an inner surface, and the second joint section adapted to receive the first joint section and the first holes matching the second holes when the male pin and the female pin are mated;
• second wires running along an exterior surface of the female pin, a second wire in the second wires entering a second hole in the second joint section at a second angle relative to the exterior surface of the female pin, wherein the second angle is an acute angle having a value selected from a range of values from about one degree to about five degrees and;
• socket type connectors, a socket type connector in the socket type connectors connected to the second wire, the socket type connector positioned within the second hole and terminating at the second preload face, the socket type connector adapted to receive one of the plug type connectors when the male pin and the female pin are mated;
• first tapered splines on the first pin, the first tapered splines extending outwardly from outer surface of the first cylindrical portion of the first pin and axially from the first preload face, a spline in the first tapered splines having a base at the first preload face and a width that narrows towards a tip of the spline;
• second tapered splines on the second pin, the second tapered splines extending inwardly from the inner surface of the second cylindrical portion of the second pin and axially from a second preload face, a spline in the second tapered splines having a base at the second preload face and a width that narrows towards a tip of the spline;
• and
• wherein the first tapered splines are adapted to be received by second tapered splines when the first pin and the second pin are mated.

An apparatus comprising:

• a first pin having a first joint section, the first joint section having first holes extending a length of the first joint section and terminating at a first preload face;
• a second pin having a second joint section, the second joint section having second holes extending a length of the second joint section and terminating at a second preload face, the second joint section adapted to receive the first joint section and the first holes matching the second holes when the first pin and the second pin are mated;
• first tapered splines on the first pin, the first tapered splines extending outwardly from an exterior surface of the first pin and axially from the first preload face, a spline in the first tapered splines having a base at the first preload face and a width that narrows towards a tip of the spline;
• second tapered splines on the second pin, the second tapered splines extending outwardly from an exterior surface of the second pin and axially from the second preload face, a spline in the second tapered splines having a base at the second preload face and a width that narrows towards a tip of the spline;
• and
• wherein the first tapered splines are adapted to be received by second tapered splines when the first pin and the second pin are mated;
• wherein each of the first number of splines further defined by a pair of flanks that extend from the base to the tip wherein the pair of flanks forms a first spline angle;
• wherein each of the second number of splines further defined by a pair of flanks that extend from the base to the tip wherein the pair of flanks forms a second spline angle;
• wherein the first spline angle and the second spline angle, which is substantially equal to the degree of the first spline angle, wherein each flank of the plurality of first splines contacts a seat on a corresponding flank of the plurality of second splines;
• and
• wherein when the first pin and the second pin are connected, the tips located at the end of each of the first splines are spaced from the intersection of adjacent flanks of the second pin, and wherein the tips located at the end of each of the second splines are spaced from the intersection of adjacent flanks of the first pin.