Patent ID: 8602094

Claim:
A method of forming an electrical connection through components capable of having relative rotational movement in a downhole tool assembly, comprising: providing a bearing with a first conductive race ring, a second conductive race ring, and a conductive rolling element positioned between and in contact with the first conductive race ring and the second conductive race ring; affixing the first conductive race ring to a rotationally stationary component of a downhole well system assembly and affixing the second conductive race ring to a rotatable component which is able to rotate relative to the rotationally stationary component; coupling a first electric lead to the first conductive race ring and coupling a second electric lead to the second conductive race ring to form an electrically conductive flow path through the bearing; placing the bearing in a cavity filled with fluid to isolate the bearing from a surrounding environment; and connecting a compensator with the cavity to compensate for changes in volume of the fluid.