Abstract: Collapsible shell packers and methods of use. An example method introduces a collapsible shell packer into a wellbore; wherein the collapsible shell packer comprises a collapsible hollow, metal shell. The method further includes collapsing the collapsible hollow, metal shell by compressing the collapsible hollow, metal shell axially to expand the collapsible hollow, metal shell radially, wherein the collapsible hollow, metal shell is collapsed until a portion of the collapsible hollow, metal shell contacts an adjacent surface thereby isolating a zone.

Abstract: A downhole tool, such as a logging-while-drilling tool, includes hydraulics that can provide real-time, automated control of the position of the downhole tool relative to a formation face. The positioning of the downhole tool is accomplished using processor-control of the hydraulics and using fluid present within the downhole tool, for example, mud from the downhole tool's mud bore. During operation the processor receives a signal that is indicative of the distance between the tool and a formation wall in the wellbore. The processor uses this information to position the downhole tool relative to the formation face by controlled injection of fluid into the annulus around the downhole tool. The reaction force from the pressure acts against the tool and pushes the downhole tool towards the opposite side where the annular pressure is lower.

Abstract: A downhole tool, such as a logging-while-drilling tool, includes hydraulics that can provide real-time, automated control of the position of the downhole tool relative to a formation face. The positioning of the downhole tool is accomplished using processor-control of the hydraulics and using fluid present within the downhole tool, for example, mud from the downhole tool's mud bore. During operation the processor receives a signal that is indicative of the distance between the tool and a formation wall in the wellbore. The processor uses this information to position the downhole tool relative to the formation face by controlled injection of fluid into the annulus around the downhole tool. The reaction force from the pressure acts against the tool and pushes the downhole tool towards the opposite side where the annular pressure is lower.

Abstract: A method includes inserting a vibration damper tool in a drill string, the damper includes a tubular housing having an exterior surface and a longitudinal passageway, and at least one fluid actuated piston assembly. The piston assembly includes an extendable piston, a transverse passageway, a spring chamber in the transverse passageway, and at least one spring disposed in the spring chamber. The spring biases the piston in a refracted position. The drill string and dampening tool are inserted into a wellbore, fluid is flowed down the drill string and exerts pressure on a proximal end of the piston, and creates a fluidic force sufficient to overcome a biasing retractable force of the spring to extend the piston longitudinally until a distal end of the piston contacts a sidewall of the wellbore.

Abstract: The subject matter of this specification can be embodied in, among other things, a method including inserting a vibration damper tool in a drill string, the damper including a tubular housing having an exterior surface and a longitudinal passageway, and at least one fluid actuated piston assembly, said piston assembly including an extendable piston, a transverse passageway, a spring chamber in the transverse passageway, and at least one spring disposed in the spring chamber. The spring biases the piston in a retracted position. The drill string and dampening tool are inserted into a wellbore, fluid is flowed down the drill string and exerts pressure on a proximal end of the piston, and creates a fluidic force sufficient to overcome a biasing retractable force of the spring to extend the piston longitudinally until a distal end of the piston contacts a sidewall of the wellbore.