Sealed gap sub

A gap sub comprising:

• a male member;
• a female member, the female member comprising an opening, wherein the opening matingly receives at least a portion of the male member in a radially spaced apart relationship;
• one or more electrically insulating bodies disposed between the male member and the female member to maintain the male member and the female member in the radially spaced apart relationship;
• a first seal comprising an electrically non-conductive material disposed between a tip of the male member and within the opening of the female member;
• a second seal comprising a non-conductive material located within the opening of the female member at a tip of the female member and externally to the male member adjacent the at least a portion of the male member matingly received in the opening of the female member;
• a curable material injected into and substantially filling a space defined by an inner surface of the female member, the first seal, the second seal and outer surface of the male member;
• wherein the curable material is kept within the space by the first and second seals and drilling fluids are prevented from entering the space by the first and second seals.

A gap sub comprising:

• a male member;
• a female member, the female member comprising an opening, wherein the opening matingly receives at least a portion of the male member in a radially spaced apart relationship;
• one or more electrically insulating bodies disposed between the male member and the female member, the bodies spaced apart around the male member to maintain the male member and the female member in the radially spaced apart relationship;
• a first electrically-insulating seal disposed between a tip of the male member and within the opening of the female member;
• one or more of the electrically insulating bodies received in a circumferential channel defined by the male member and the female member near the first seal to thereby secure the tip of the male member within the female member and maintain contact between the first seal and the male and female members.