Abstract: Pressure cycle independent indexer devices and methods include an indexing logic having a trigger sequence path defining a pressure event (e.g., one or more pressure events) between a starting slot and an actuation slot and each pressure event being located between a sequence transition point from an incoming sequence leg into an outgoing sequence leg of the trigger sequence path and a return transition point from the trigger sequence path into a return path. The indexing logic may permit cycling hydraulic pressures in a well without inadvertently cycling through the trigger sequence path.

Abstract: A system and methodology facilitates utilization of a valve and a cutter both of which may be used in a subsea test tree. The valve comprises a ball element pivotably mounted in a housing and having an exterior surface and a passageway sized to receive a conveyance therethrough. The cutter also is located in the housing but at a position spaced from the ball element. The cutter is oriented for selective severing of the conveyance. Additionally, a seal system is positioned to act against a surface of the ball element.

Abstract: A system and methodology facilitates utilization of a valve of a type which may be used as a subsea test tree. The valve comprises a valve element pivotably mounted in a housing having a passageway therethrough. The valve element may be actuated between an open position and a closed position blocking the passageway. A cutter is disposed along a first surface of the valve element and a seal system is positioned for engagement with a second surface of the valve element to provide separate cutting and sealing surfaces. Actuating the valve element from the open position to the closed position enables cutting of a conveyance, that may be positioned through the passageway, while simultaneously forming a seal along a separate surface to sealingly block the passageway.

Abstract: A technique enables failsafe control over actuators used to actuate downhole tools. The technique may utilize a well system having a tool with an adjustable member. An actuation mechanism serves as a fail-as-is mechanism and works in cooperation with the adjustable member. The actuation member is shiftable upon receiving a predetermined input; however the actuation member does not move the adjustable member upon each shift. Once the actuation member has been shifted the requisite number of times to move the adjustable member to another position, at least one subsequent shift of the actuation member is not able to cause movement of the adjustable member. The result is a fail-as-is technique for ensuring the tool is not inadvertently actuated to another operational position.

Abstract: A switching apparatus, system, and method configured to operate at least a dual line downhole tool via a single pressure source are provided. The switching apparatus may comprise a housing configured to contain a switching piston actuated by a fluid pressure source. The apparatus may further contain a switching valve comprising a first and second coupling passageway coupled to a switching valve housing comprising four ports. The switching piston may actuate the switching valve, alternating the coupling between a first configuration in which the four ports are communicatively coupled into two sets of ports and a second configuration in which the four ports are communicatively coupled into an alternate two sets of ports. The first configuration may configure the fluid pressure source to actuate the downhole tool in a first manner and the second configuration may configure the fluid pressure source to actuate the downhole tool in a second manner.

Abstract: Embodiments and methods are disclosed herein that relate to a connection assembly to communicatively couple one or more cables to each other. The connection assembly includes a cable having a housing with a communication line disposed therein, a connection apparatus having a housing with a communication line disposed therein, and a weld coupling disposed between an end of the housing of the connection apparatus and an end of the housing of the cable such that the end of the housing of the connection apparatus and the end of the housing of the cable are connected to each other through the weld coupling. The communication line of the connection apparatus is communicatively coupled to the communication line of the cable, and the end of the housing of the connection apparatus has substantially the same diameter as the end of the housing of the cable.

Abstract: A method of coupling a first control line to a second control line is provided comprising the steps of prepping the first and second control lines to respectively produce a first end and a second end. Prepping may comprise inserting a plug assembly into at least one of the first or second ends prior to facing the end containing the plug assembly. The method may further include butt-welding the first end to the second end to form a splice and providing a protective assembly to cover the splice. The plug assembly may comprise a plug member, a seal, and an end piece to couple the seal to the plug member, in some embodiments. In other embodiments, the plug assembly may comprise a plug member and a seal coupled to the plug member.

Abstract: A switching apparatus, system, and method configured to operate at least a dual line downhole tool via a single pressure source are provided. The switching apparatus may comprise a housing configured to contain a switching piston actuated by a fluid pressure source. The apparatus may further contain a switching valve comprising a first and second coupling passageway coupled to a switching valve housing comprising four ports. The switching piston may actuate the switching valve, alternating the coupling between a first configuration in which the four ports are communicatively coupled into two sets of ports and a second configuration in which the four ports are communicatively coupled into an alternate two sets of ports. The first configuration may configure the fluid pressure source to actuate the downhole tool in a first manner and the second configuration may configure the fluid pressure source to actuate the downhole tool in a second manner.

Abstract: A technique enables failsafe control over actuators used to actuate downhole tools. The technique may utilize a well system having a tool with an adjustable member. An actuation mechanism serves as a fail-as-is mechanism and works in cooperation with the adjustable member. The actuation member is shiftable upon receiving a predetermined input; however the actuation member does not move the adjustable member upon each shift. Once the actuation member has been shifted the requisite number of times to move the adjustable member to another position, at least one subsequent shift of the actuation member is not able to cause movement of the adjustable member. The result is a fail-as-is technique for ensuring the tool is not inadvertently actuated to another operational position.

Abstract: A method of coupling a first control line to a second control line is provided comprising the steps of prepping the first and second control lines to respectively produce a first end and a second end. Prepping may comprise inserting a plug assembly into at least one of the first or second ends prior to facing the end containing the plug assembly. The method may further include butt-welding the first end to the second end to form a splice and providing a protective assembly to cover the splice. The plug assembly may comprise a plug member, a seal, and an end piece to couple the seal to the plug member, in some embodiments. In other embodiments, the plug assembly may comprise a plug member and a seal coupled to the plug member.

Abstract: The present invention provides a field weldable connection. In one embodiment, the field weldable connection is a downhole connector assembly for sealingly attaching a first and a second segment of a control line. The control line has an outer housing that encapsulates a polymeric secondary housing. A communication line runs therethrough the secondary housing. The connector further comprises a weld coupling welded to the outer housing of the first and second segments of the control line. To protect the communication line from the thermal radiation and heat generated during the welding process, at least one reflective sleeve replaces a portion of the secondary housing at a location intermediate the communication line and the welds of the coupling.

Abstract: The present invention provides a field weldable connection. In one embodiment, the field weldable connection is a downhole connector assembly for sealingly attaching a first and a second segment of a control line. The control line has an outer housing that encapsulates a polymeric secondary housing. A communication line runs therethrough the secondary housing. The connector further comprises a weld coupling welded to the outer housing of the first and second segments of the control line. To protect the communication line from the thermal radiation and heat generated during the welding process, at least one reflective sleeve replaces a portion of the secondary housing at a location intermediate the communication line and the welds of the coupling.

Abstract: The present invention provides a field weldable connection. In one embodiment, the field weldable connection is a downhole connector assembly for sealingly attaching a first and a second segment of a control line. The control line has an outer housing that encapsulates a polymeric secondary housing. A communication line runs therethrough the secondary housing. The connector further comprises a weld coupling welded to the outer housing of the first and second segments of the control line. To protect the communication line from the thermal radiation and heat generated during the welding process, at least one reflective sleeve replaces a portion of the secondary housing at a location intermediate the communication line and the welds of the coupling.

Abstract: The present invention provides a field weldable connection. In one embodiment, the field weldable connection is a downhole connector assembly for sealingly attaching a first and a second segment of a control line. The control line has an outer housing that encapsulates a polymeric secondary housing. A communication line runs therethrough the secondary housing. The connector further comprises a weld coupling welded to the outer housing of the first and second segments of the control line. To protect the communication line from the thermal radiation and heat generated during the welding process, at least one reflective sleeve replaces a portion of the secondary housing at a location intermediate the communication line and the welds of the coupling.