Abstract: A system having a number of land units [100, 4000, 5000] is disclosed which operates to efficiently find and create boreholes [5] to one or more underground targets [1]. Each of the land units [100, 4000, 5000] may be remotely controlled from a central command unit [6000]. The land unit also may be self-controlled, or partially controlled by the central command unit [6000]. The system [10] is reconfigurable to reallocate tasks to functional land units [100, 4000, 5000] which were originally allocated to land units which have been destroyed and are now non-functional.

Abstract: A simulation system [200] models and optimizes parameters for a pulsed liquid slug boring system employing an energetic fluid [7]. The simulation system [200] employs a fluid flow energy unit [251], an exhaust and retention energy unit [253] and a comminuting energy unit [255] to calculate energies of the system. Total energy unit [257] combines these energies. Fluid flow energy unit 251 receives fluid volume and calculates the fluid flow energy. Exhaust and retention energy unit 253 receives input from the exhaust energy volume unit [243] and mission duration unit [211] to determine the exhaust and retention energy. Comminuting energy unit 255 receives hole depth and hole diameter and specific energy of rock to determine the require comminuting energy. The simulation system [200] operates to determine optimum values of design parameters by searching for the minimum energy solution.

Abstract: A method and device for boring a hole [5] through a material along a desired path includes an umbilical subsystem [2000] connected to a boring subsystem [3000] having a plurality of pulsejets [3100]. These pulsejets [3100] repeatedly receive and ignite a combustible fluid [7] in a combustion chamber [3230] causing a portion of the fluid [7] to be forced out of a nozzle [3260] at high speeds as a fluid slug [10] that impacts materials ahead of the pulsejet [3100]. A controller [3310] controls the amount of fluid provided to each pulsejet [3100], and the firing timing, thereby controlling the intensity in which each slug [10] impacts the material. By modulating the intensity and firing sequence of each of the pulsejets [3100], material ahead of the boring subsystem [3000] is differentially bored thereby allowing steering of the boring subsystem [3000].

Abstract: A method and device for boring a hole [5] through a material along a desired path includes an umbilical subsystem [2000] connected to a boring subsystem [3000] having a plurality of pulsejets [3100]. These pulsejets [3100] repeatedly receive and ignite a combustible fluid [7] in a combustion chamber [3230] causing a portion of the fluid [7] to be forced out of a nozzle [3260] at high speeds as a fluid slug [10] that impacts materials ahead of the pulsejet [3100]. A controller [3310] controls the amount of fluid provided to each pulsejet [3100], and the firing timing, thereby controlling the intensity in which each slug [10] impacts the material. By modulating the intensity and firing sequence of each of the pulsejets [3100], material ahead of the boring subsystem [3000] is differentially bored thereby allowing steering of the boring subsystem [3000].

Abstract: A simulation system [200] models and optimizes parameters for a pulsed liquid slug boring system employ an energetic fluid [7]. The simulation system [200] employs a fluid flow energy unit [251], an exhaust and retention energy unit [253] and a comminuting energy unit [255] to calculate energies of the system. Total energy unit [257] combines these energies. Fluid flow energy unit 251 receives fluid volume and calculates the fluid flow energy. Exhaust and retention energy unit 253 receives input from the exhaust energy volume unit [243] and mission duration unit [211] to determine the exhaust and retention energy. Comminuting energy unit 255 receives hole depth and hole diameter and specific energy of rock to determine the require comminuting energy. The simulation system [200] operates to determine optimum values of design parameters by searching for the minimum energy solution.