Disclosed are methods and devices for testing downhole connector electrical systems and cable integrity during installation of a permanent completion, including a customized retrievable plug arm assembly connectable to the completion during RIH, the tool mimicking a retrievable ESP, but without motor, and can be employed with or without pressure isolation. Another method employs a slidable starpoint located within the downhole wet mate connector of the completion to provide continuous electrical contact between the phases when no retrievable assembly is in place. When a retrievable assembly is later put in place, the slidable starpoint is moved into a second position that no longer provides electrical contact between the phases. Another method uses fusible links installed between two conductors within the downhole electrical connector system of the completion to provide similar electrical contact between phases, the fusible link configured to melt away once motor current is sent through the conductors.

Disclosed are methods and devices for testing downhole connector electrical systems and cable integrity during installation of a permanent completion, including a customized retrievable plug arm assembly connectable to the completion during RIH, the tool mimicking a retrievable ESP, but without motor, and can be employed with or without pressure isolation. Another method employs a slidable starpoint located within the downhole wet mate connector of the completion to provide continuous electrical contact between the phases when no retrievable assembly is in place. When a retrievable assembly is later put in place, the slidable starpoint is moved into a second position that no longer provides electrical contact between the phases. Another method uses fusible links installed between two conductors within the downhole electrical connector system of the completion to provide similar electrical contact between phases, the fusible link configured to melt away once motor current is sent through the conductors.

A dry mateable subsea electrical connector coupling, having a removable connector body adapted to couple a first connector part, terminated to a subsea cable or jumper, to a subsea sensor device, or to a subsea wet mateable connector part. The removable connector body is adapted to seal a chamber of the first connector part terminated to the subsea hose or jumper and to receive electrical conductors of the subsea sensor device or subsea wet mateable connector part. The removable connector body includes electrical conductors and fittings adapted to receive corresponding electrical conductors and fittings from the hose or jumper.

A dry mateable subsea electrical connector coupling, having a removable connector body adapted to couple a first connector part, terminated to a subsea cable or jumper, to a subsea sensor device, or to a subsea wet mateable connector part. The removable connector body is adapted to seal a chamber of the first connector part terminated to the subsea hose or jumper and to receive electrical conductors of the subsea sensor device or subsea wet mateable connector part. The removable connector body includes electrical conductors and fittings adapted to receive corresponding electrical conductors and fittings from the hose or jumper.

A module for use in a hardware platform for networking, computing, and/or storage includes a printed circuit board assembly having a primary side and a secondary side, wherein the primary side includes more physical space, in a vertical direction extending out from the printed circuit board assembly, than the secondary side; electrical and/or optical components disposed on the primary side of the printed circuit board assembly; and a secondary side heatsink located on and extending from the secondary side, wherein the secondary side heatsink is disposed to one of i) an electrical and/or optical component disposed on the secondary side, and ii) an optical component disposed on the primary side, for thermal management.

A connector part of a connector unit with a male part and a female part, has at least one electrically conductive layer with at least one end region being electrically stressed after a mating process of the male part and the female part. To minimize electrical stress concentrations, the connector part has at least one stress control device for reducing electrical stress at the at least one end region.

A connector part of a connector unit with a male part and a female part, has at least one electrically conductive layer with at least one end region being electrically stressed after a mating process of the male part and the female part. To minimize electrical stress concentrations, the connector part has at least one stress control device for reducing electrical stress at the at least one end region.

A wet connector for a downhole tool string includes an insulating material body, a conductive core and an insulating piston. The insulating material body is provided with a first chamber, and the first chamber is filled with insulating oil. A conductive core chamber of the conductive core is communicated with the first chamber. The insulating piston is hermetically connected to a first opening through a first sealing lip. When a male connector abuts against the insulating piston and moves toward the bottom of the conductive core chamber, the male connector is in contact with and electrically connected to the conductive core chamber, so that the insulating oil in the first chamber is compressed, and a pressure of the insulating oil in the first chamber is enabled to be greater than a pressure of well fluid outside the wet connector.

A waterproof electrical connector assembly releasably connects an electrical cable to a second cable, or to one or more electrodes or sensors in a housing that has a bore therethrough that accommodates the electrical cable on one end and a fitting on the other end. The fitting holds one or more electrodes/sensors in a bore through the fitting. The fitting is a commercially-available male-threaded polymeric fitting of the type used in High-performance Liquid Chromatography (HPLC) applications. This type of polymeric fitting has a conical, or tapered, ferrule portion at one end that is configured to fit securely into a female-threaded and chamfered bore in the housing so that when the fitting is tightened against the chamfered housing bore it forms a watertight seal which is waterproof to at least 10,000 psi. As the seal is formed, the components contact each other to form an electrical connection, illustratively, a connection from electrode or sensor probes to the cable leading to measuring equipment.

A waterproof electrical connector assembly releasably connects an electrical cable to a second cable, or to one or more electrodes or sensors in a housing that has a bore therethrough that accommodates the electrical cable on one end and a fitting on the other end. The fitting holds one or more electrodes/sensors in a bore through the fitting. The fitting is a commercially-available male-threaded polymeric fitting of the type used in High-performance Liquid Chromatography (HPLC) applications. This type of polymeric fitting has a conical, or tapered, ferrule portion at one end that is configured to fit securely into a female-threaded and chamfered bore in the housing so that when the fitting is tightened against the chamfered housing bore it forms a watertight seal which is waterproof to at least 10,000 psi. As the seal is formed, the components contact each other to form an electrical connection, illustratively, a connection from electrode or sensor probes to the cable leading to measuring equipment.