Abstract: A subsurface propeller module, using Voith Schneider propeller technology, is provided for use in underwater vehicle dynamic motion control. One or more modules are mounted between nose and body sections of the vehicle such that their axes of rotation coincide with the longitudinal centerline of the vehicle. This enables the module to thrust in any direction normal to the direction of travel. Wiring for power and sensors can be routed through structural conduits connecting the nose section to the main body of the vehicle and supporting the propeller modules. The structural conduits can be shaped to provide support for the nose and body sections, and to have minimal hydrodynamic impact on vehicle forward motion or module thrust. A sealed housing is provided for the motors and control actuators of the propeller modules.

Abstract: A tubing conveyed tool for use in perforating a well bore utilizing abrasive perforating techniques. The perforating tool is particularly useful in non-vertical wells. The perforating tool is designed to permit running and setting a bridge plug, and then perforating the well bore without requiring the removal of the tool string. An eccentric weight bar can also be used to allow for directional perforating in non-vertical wells. The eccentric weight bar uses gravity to cause the bar to rotate to a predetermined position.

Abstract: A tubing conveyed tool for use in perforating a well bore utilizing abrasive perforating techniques. The perforating tool is particularly useful in non-vertical wells. The perforating tool is designed to permit running and setting a bridge plug, and then perforating the well bore without requiring the removal of the tool string. An eccentric weight bar can also be used to allow for directional perforating in non-vertical wells. The eccentric weight bar uses gravity to cause the bar to rotate to a predetermined position.

Abstract: A tubing conveyed tool for use in perforating a well bore utilizing abrasive perforating techniques. The perforating tool is particularly useful in non-vertical wells. The perforating tool is designed to permit running and setting a bridge plug, and then perforating the well bore without requiring the removal of the tool string. An eccentric weight bar can also be used to allow for directional perforating in non-vertical wells. The eccentric weight bar uses gravity to cause the bar to rotate to a predetermined position.

Abstract: A portable computer includes a base member and a lid member attached to the base member and movable between a closed position and an open position. A display is mounted on a first side of the lid member positioned adjacent the base member when the lid member is in the closed position. An optical drive is mounted on a second side of the lid member opposite the first side.

Abstract: A method and apparatus are provided for determining an estimate of flow stability, in addition to providing a measurement of flow velocity distribution. To this end, monitoring is provided of the changes over time of flow measurements from a plurality of spaced apart measuring points. An indication of the reliability of the flow velocity distribution measurement is produced based on the estimate of stability.

Abstract: A portable computer includes a base member and a lid member attached to the base member and movable between a closed position and an open position. A display is mounted on a first side of the lid member positioned adjacent the base member when the lid member is in the closed position. An optical drive is mounted on a second side of the lid member opposite the first side.

Abstract: A portable computer system has an enclosure including a base with a first surface and a microprocessor mounted in the enclosure. A keyboard is mounted in the base of the enclosure and is coupled to provide input to the microprocessor. A mass storage is coupled to the microprocessor and a display is coupled to the microprocessor by a video controller. A system memory is coupled to provide storage to facilitate execution of computer programs by the microprocessor. A support member is attached to the enclosure and at least a portion of the support member extends from the first surface of the enclosure adjacent the keyboard.

Abstract: A portable computer system has an enclosure including a base with a first surface and a microprocessor mounted in the enclosure. A keyboard is mounted in the base of the enclosure and is coupled to provide input to the microprocessor. A mass storage is coupled to the microprocessor and a display is coupled to the microprocessor by a video controller. A system memory is coupled to provide storage to facilitate execution of computer programs by the microprocessor. A support member is attached to the enclosure and at least a portion of the support member extends from the first surface of the enclosure adjacent the keyboard.

Abstract: A retrieval tool for whipstocks is disclosed. A latch is retractable into the tool upon application of hydraulic pressure. A locking pin securely fastens the whipstock and retrieving tool together. The hydraulic pressure acts a cleaning force on the top of the whipstock and the retrieving slot to facilitate engagement. The offset stabilizer, when oriented opposite the lug on the retrieving tool, creates a force in the direction of the lug, whereby latching the retrieving tool will start. A joint of drillpipe or heavyweight drillpipe is run above the eccentric stabilizer. An offset stabilizer is provided to ensure proper initial orientation and avoid sticking the tool. The latch can firmly grip lugs within a slot in the whipstock. A overshot design is also disclosed using a similar hydraulically actuated latch assembly where the latch grabs the whipstock without having to use an opening therein, if for any reason the opening has been fouled with debris or damaged due to milling.