Abstract: A disclosed method of downhole tool system development comprises: receiving specifications of a downhole tool system that comprises multiple strings, each string having one or more components; and checking for interference between the multiple strings in an initial position. A disclosed system comprises: a memory that stores software; and a processor coupled to the memory to execute the software. The software causes the processor to provide a graphical user interface that enables a user to specify a downhole tool system having multiple strings, and to test the strings for diametrical overlap attributable to relative motion of the strings.

Abstract: A navigation system for a downhole tool comprises a first sensor operable within a well bore to sense a parameter, at least one additional sensor, each of the at least one additional sensors being operable within the well bore to sense a parameter, and a locator component operable to determine a location of the downhole tool within the well bore based on the sensed parameters. A method for determining a location of a downhole tool within a well bore comprises deploying the downhole tool into the well bore, sensing a first parameter within the well bore via the tool, sensing at least a second parameter within the well bore via the tool, and self-determining the location of the tool based on the sensed parameters without receiving communications from the surface.

Abstract: An autonomous downhole tool for use in a well bore is moved along at least a partial length of the well bore via an external force, and the tool is self-operable to perform one or more functions at one or more locations within the well bore.. A method for operating a downhole tool within a well bore comprises deploying the tool along at least a partial length of the well bore via an external force, and self-activating one or more functions of the tool, wherein the tool does not receive command communications from the surface.

Abstract: A method of servicing a well bore comprises deploying into the well bore a zonal isolation device operable to self-set at a sensed location, and self-setting the zonal isolation device to hold at the sensed location without receiving command communications from the surface, wherein the zonal isolation device is deployed along at least a partial length of the well bore via an external force. Another method of servicing comprises deploying into the well bore a tool operable to self-activate at one or more locations, and self-navigating the tool to determine the one or more locations without receiving communications from the surface, wherein the tool is moved along at least a partial length of the well bore via an external force.

Abstract: A downhole tool for use in a well bore comprises an onboard navigation system for determining the location of the tool within the well bore, wherein the tool is moved along at least a partial length of the well bore via an external force. A method of locating a downhole tool in a well bore comprises deploying the tool along at least a partial length of the well bore via an external force, and self-determining the location of the tool without receiving communications from the surface. In an embodiment, the tool is a well bore zonal isolation device.