Abstract: A downhole tool for joining a string of pipe to a tubular already downhole with a seal element made of metal or metal alloy with a melting point lower than the melting point of the tool and tubular but higher than the temperature of expected downhole operating conditions.

Abstract: A downhole tool for joining a string of pipe to a tubular already downhole with a seal element made of metal or metal alloy with a melting point lower than the melting point of the tool and tubular but higher than the temperature of expected downhole operating conditions.

Abstract: A casing patch assembly may include a patch seal having two ring-type seals with different performance characteristics. A first ring seals against a casing patch and a casing stub. A second ring self-adjusts to the size of the casing stub and is located so that it blocks the first seal, which may be softer material than the second ring, from being squeezed into an annular gap between the casing patch and the casing stub. The second ring may include a split feature to allow for the self-adjustment. Optionally, a third ring made of a malleable material may be located between the first and second rings to protect the first ring from being damaged by movement of the split feature.

Abstract: A junction includes a borehole casing having a window therein; a diverter disposed within the casing and aligned and oriented with the window, the diverter having at least one profile along a longitudinal edge thereof; and a hanger assembly having a window therein, the window having an edge receivable by the at least one profile, the profile supporting the hanger assembly and method.

Abstract: A perimetrically acting collet includes a body and at least one mating profile opening in the body. A plurality of resilient members located adjacent one side of the at least one mating profile opening and a profiled body is biased perimetrically by the plurality of resilient members.