Abstract: A device for vibrating tubing as it is inserted into a wellbore is disclosed. The device has a fluidic switch that has no moving parts. The fluidic switch is connected to a piston that oscillates back and forth in a cylinder. The piston is the only moving part. As the piston oscillates, it blocks and unblocks openings in the cylinder or other components. The movement of the piston controls the timing of the oscillation, and also generates an impulse or vibration. The vibration may reduce the friction between the tubing and the wellbore.

Abstract: A device for vibrating tubing as it is inserted into a wellbore is disclosed. The device has a fluidic switch that has no moving parts. The fluidic switch is connected to a piston that oscillates back and forth in a cylinder. The piston is the only moving part. As the piston oscillates, it blocks and unblocks openings in the cylinder or other components. The movement of the piston controls the timing of the oscillation, and also generates an impulse or vibration. The vibration may reduce the friction between the tubing and the wellbore.

Abstract: A device for vibrating tubing as it is inserted into a wellbore is disclosed. The device has a fluidic switch that has no moving parts. The fluidic switch is connected to a piston that oscillates back and forth in a cylinder. The piston is the only moving part. As the piston oscillates, it blocks and unblocks openings in the cylinder or other components. The movement of the piston controls the timing of the oscillation, and also generates an impulse or vibration. The vibration may reduce the friction between the tubing and the wellbore.

Abstract: A system and method are provided for searching the contents of a network system connected to data storage devices from a remote terminal over a wired or wireless link. This system formulates search requests, and dispatches the requests, A variety of search engines and services are invoked to find the requested contents. A summary is formed in a format brief enough for transmission over a wireless link. The search summary information is indexed the remote terminal to subsequently request all or part of a document referenced in the search summary, allows formation of requests of all or part of a referenced document in its original form or in a form transcoded appropriately for transmission over a wireless link and presented on the remote terminal.

Abstract: A device for vibrating tubing as it is inserted into a wellbore is disclosed. The device has a fluidic switch that has no moving parts. The fluidic switch is connected to a piston that oscillates back and forth in a cylinder. The piston is the only moving part. As the piston oscillates, it blocks and unblocks openings in the cylinder or other components. The movement of the piston controls the timing of the oscillation, and also generates an impulse or vibration. The vibration may reduce the friction between the tubing and the wellbore.

Abstract: A gauge for measuring the thickness of a piece of steel or other ferromagnetic substrate. The gauge may be used to measure the wall thickness of tubing, a pipe, a shim, a plate, etc, given that it's made from a material that a magnet might be attracted to. The gauge uses a force sensor to measure the force between a magnet and the tubing, pipe, shim, plate, etc. Because different thicknesses correspond to a different magnitude of force, the gauge may be used to find flaws and variations in the material. The gauge may use a force sensor that is approved for use in or near flammable environments.

Abstract: The invention comprises wireless low frequency downhole detection, monitoring and communication capable of operation at greater depths than prior methods and capable of detection with standard equipment and/or standard data, thereby improving system cost, utility, reliability and maintainability.

Abstract: The invention comprises wireless low frequency downhole detection, monitoring and communication capable of operation at greater depths than prior methods and capable of detection with standard equipment and/or standard data, thereby improving system cost, utility, reliability and maintainability.

Abstract: A method of protecting mating screw threads at least under tightening torques is described in which a dry lubricant such as molybdenum disulphide is applied to one screw thread, and a liquid lubricant is applied to the other screw thread. The screw threads are then tightened to the required torque value. When completely mated the leakage path will not be masked as a result of volatilization of any of the components of either lubricant.