Abstract: A powertrain for powering wellsite pumping operations includes a power source for producing energy, a power bank, electric motors coupled to pumps, and a power management system. The power source can be a prime mover coupled to a generator, the prime mover sized for supply up to the average power demand of the pumping operation, and the power bank is sized to supply up to at least the difference between the peak and average power demand of the pumping operation, thereby providing a load levelling means to satisfy peak demand of the operation. The power management system manages the direction of current flow, state of charge of the power bank, and power source operation to provide least fuel consumption while meeting the power demand of the pumping operation.

Abstract: A powertrain for powering wellsite pumping operations includes a power source for producing energy, a power bank, electric motors coupled to pumps, and a power management system. The power source can be a prime mover coupled to a generator, the prime mover sized for supply up to the average power demand of the pumping operation, and the power bank is sized to supply up to at least the difference between the peak and average power demand of the pumping operation, thereby providing a load levelling means to satisfy peak demand of the operation. The power management system manages the direction of current flow, state of charge of the power bank, and power source operation to provide least fuel consumption while meeting the power demand of the pumping operation.

Abstract: A method of improving the flow of fluids into or along a deviated wellbore that has a partial or complete obstruction caused by fill particles, comprising removing the fill particles from the obstruction and depositing the fill particles within the wellbore, uphole and/or downhole of the partial or complete obstruction. The method described herein removes obstructions and/or stimulates a well in which productivity has been impaired by the presence of fill in the wellbore. This is accomplished without removing the fill from the wellbore, and therefore avoids the consequent disposal or storage considerations.

Abstract: Tubing encapsulated cable is generally difficult to place in the interior of the coil tubing. It has been found that in certain circumstances the process of placing the tubing encapsulated cable in the interior coil tubing is simplified by manufacturing the coil tubing with the tubing encapsulated cable already in place in the interior of the coil tubing. In the instance when a tubular is formed by curving the edges of the a flat plate into the tubular shape, along the flat plate's long axis, the tubing encapsulated cable is unspooled to the interior of the coil tubing prior to the edges of the flat plate being welded together to form the coil tubing. Or when the coil tubing is formed by spiral wrapping the flat plate, at an angle to the flat plate's long axis, into a tubular shape, again the tubing encapsulated cable is unspooled to the interior of the tubular shape prior to the edges of the flat plate being welded together to form the coil tubing.

Abstract: A compression device for use with a solid oxide fuel cell stack is formed from a hermetically sealed cylindrical shell filled with an expansion fluid such as air. The shell has a corrugated sidewall which permits axial deformation as the compression device is heated. The shell applies a compressive frame to the stack when installed in the fuel cell stack.

Abstract: A compression device for use with a solid oxide fuel cell stack is formed from a hermetically sealed cylindrical shell filled with an expansion fluid such as air. The shell has a corrugated sidewall which permits axial deformation as the compression device is heated. The shell applies a compressive frame to the stack when installed in the fuel cell stack.