Abstract: A remote control system for controlling a remotely operated vehicle (ROV) may comprise an ROV wireless transceiver operatively in communication with one or more wireless transceivers deployed at a distance from the ROV. The remote wireless transceivers are operatively in communication with one or more ROV consoles and ROV may be operated from the remote location by operatively connecting the first ROV console to a second wireless data transceiver; establishing wireless data communications between the second wireless data transceiver and the ROV wireless transceiver; and controlling a predetermined ROV function at the ROV from the first ROV console via communications established between the second wireless data transceiver and the ROV wireless transceiver. Two or more such remote wireless data transceivers and/or remote ROV consoles may be provided for redundancy, ancillary functions, or the like.

Abstract: A remotely operated vehicle integrated system comprises one or more remotely operated vehicles (ROV) configured to be deployed substantially continuously subsea and one or more a tether management systems configured to be deployed substantially continuously subsea. The ROVs and tether management systems are typically deployed substantially continuously subsea where a first signal interface, e.g. for power and/or data, is operatively connecting the signal source deployed substantially permanently subsea and one or more of the ROVs operatively connected the signal source.

Abstract: A remote control system for controlling a remotely operated vehicle (ROV) may comprise an ROV wireless transceiver operatively in communication with one or more wireless transceivers deployed at a distance from the ROV. The remote wireless transceivers are operatively in communication with one or more ROV consoles and ROV may be operated from the remote location by operatively connecting the first ROV console to a second wireless data transceiver; establishing wireless data communications between the second wireless data transceiver and the ROV wireless transceiver; and controlling a predetermined ROV function at the ROV from the first ROV console via communications established between the second wireless data transceiver and the ROV wireless transceiver.

Abstract: A remotely operated vehicle integrated system comprises one or more remotely operated vehicles (ROV) configured to be deployed substantially continuously subsea and one or more a tether management systems configured to be deployed substantially continuously subsea. The ROVs and tether management systems are typically deployed substantially continuously subsea where a first signal interface, e.g. for power and/or data, is operatively connecting the signal source deployed substantially permanently subsea and one or more of the ROVs operatively connected the signal source.

Abstract: An embodiment of an amplifier includes an amplifier output node operable to provide an output signal, and an output stage. The output stage includes a drive buffer having an input node and an output node, a drive transistor, and a compensation capacitor. The drive transistor has a control node coupled to the output node of the drive buffer, a first drive node, and a second drive node coupled to the amplifier output node. And the compensation capacitor has a first node isolated from the control node of the drive transistor by the drive buffer, and has a second node coupled to the amplifier output node. By buffering the control node of the drive transistor, one may reduce the level of nonlinear current referred back to the amplifier input as a nonlinear offset voltage, and thus may reduce the level of nonlinear distortion that his nonlinear offset voltage generates at the amplifier output.

Abstract: An embodiment of an amplifier includes an amplifier output node operable to provide an output signal, and an output stage. The output stage includes a drive buffer having an input node and an output node, a drive transistor, and a compensation capacitor. The drive transistor has a control node coupled to the output node of the drive buffer, a first drive node, and a second drive node coupled to the amplifier output node. And the compensation capacitor has a first node isolated from the control node of the drive transistor by the drive buffer, and has a second node coupled to the amplifier output node. By buffering the control node of the drive transistor, one may reduce the level of nonlinear current referred back to the amplifier input as a nonlinear offset voltage, and thus may reduce the level of nonlinear distortion that his nonlinear offset voltage generates at the amplifier output.

Abstract: Methods and circuits for extracting a true mean of two signals are provided. A first amplifier input stage (e.g., an n-type stage) is operated when a mean of the two signals approaches an upper rail voltage. A second amplifier input stage (e.g., a p-type stage) is operated when the mean of the two signals approaches a lower rail voltage. A transitioning circuit controls how much each of the first and the second amplifier input stages contributes to an input of a high-gain amplifier output stage, when the mean of the two signal does not approach either of the rail voltages. An output of the high-gain amplifier output stage is fed back to both the first and second amplifier input stages via a feedback stage, which can be a matched buffer stage.

Abstract: An apparatus for use in subsea well completion systems is provided. The apparatus has an isolation sleeve and an extension sleeve. The isolation sleeve has a first end, a second end and a longitudinal axis defined between the first end and the second end. The isolation sleeve has a generally tubular shape. The extension sleeve has a first end attached to the second end of the isolation sleeve to form an assembly comprising the isolation sleeve and the extension sleeve, a second end, and a longitudinal axis that is coaxially aligned with the longitudinal axis of the isolation sleeve. Like the isolation sleeve, the extension sleeve has a generally tubular shape.

Abstract: A well completion system for a side valve tree that has a precision cut low profile helix that can be used in completing a wellbore where the bore is substantially curved is provided. The well completion system has a typical spool body assembly having an inside surface defining a vertical bore extending therethrough and having at least a lateral production fluid outlet port. The spool body assembly has a helix is positioned at the lower end. The helix has a tubular member having a generally cylindrical outer surface defining an outer diameter and a generally cylindrical inner surface defining an inner diameter, an upper end and a lower end. The tubular member has an organ pipe-shaped cut in the upper end so that the upper end is generally elliptically shaped to form a pair of arcuate ramps which meet at an apex at the upper end and at a longitudinally extending slot near the lower end and a means for attaching the helix to the spool body assembly.