A cutting table comprises hard material, and a fluid flow pathway within the hard material. The fluid flow pathway is configured to direct fluid proximate outermost boundaries of the hard material through one or more regions of the hard material inward of the outermost boundary of the hard material. A cutting element and an earth-boring tool are also described.

A drag bit includes a blade extending from the bit body and supporting inner cutters proximate the longitudinal axis and outer cutters spaced from the longitudinal axis. The inner cutters are rotationally offset from the outer cutters. During operation the inner cutters deposit cut material in a channel that is contiguous with a channel that receives material cut by the outer cutters. The cutters and the contiguous channels flush agglomerating material from the slots.

A drag bit includes a blade extending from the bit body and supporting inner cutters proximate the longitudinal axis and outer cutters spaced from the longitudinal axis. The inner cutters are rotationally offset from the outer cutters. During operation the inner cutters deposit cut material in a channel that is contiguous with a channel that receives material cut by the outer cutters. The cutters and the contiguous channels flush agglomerating material from the slots.

An earth-boring bit includes a bit body threaded at its upper extent for connection to a drill string and a plurality of blades on the bit body, each blade having a leading edge and a trailing edge. A plurality of cutting elements is arranged on the leading edge of each blade and a junk slot is defined between pairs of adjacent blades. A surface texture may be formed on the surface of the junk slot, the surface texture being selected to alter a flow of drilling fluid through the junk slot. At least one milling element may extend at least partially across the junk slot between the trailing edge and leading edge of adjacent blades, wherein flow of cuttings generated by the cutting elements is impeded until the cuttings are disintegrated to a selected size.

An earth-boring bit includes a bit body threaded at its upper extent for connection to a drill string and a plurality of blades on the bit body, each blade having a leading edge and a trailing edge. A plurality of cutting elements is arranged on the leading edge of each blade and a junk slot is defined between pairs of adjacent blades. A surface texture may be formed on the surface of the junk slot, the surface texture being selected to alter a flow of drilling fluid through the junk slot. At least one milling element may extend at least partially across the junk slot between the trailing edge and leading edge of adjacent blades, wherein flow of cuttings generated by the cutting elements is impeded until the cuttings are disintegrated to a selected size.

A vortices induced helical fluid delivery system that creates a fluid pattern with cavitation, helical and acoustic (pulsating) oscillating methods with no mechanical moving parts within the technology without being limited to pressures, temperatures, volumes or fluid type that more efficiently clean out scale and debris build-up from a productive or formerly productive oil, gas or wastewater wells, including perforations and near region that surrounds the well. There are varying sized bearings/spheres that can be placed in each chamber that are hydraulically driven that reduce the total flow area (instead of slow down the fluid). The technology can be externally altered to encompass drill string operations to help improve drilling operations by reducing friction and improving annular fluid flow by the inherent vibration that is created by the technology.

A self-directing nozzle of a drill bit of a downhole tool and method are disclosed. The drill bit with the nozzle may be used to form a wellbore in a subterranean formation. The drill bit has a passage for fluid to pass through. The nozzle includes a case positionable in the passage of the drill bit and a movable body movably positionable in the case. The movable body has a channel for passage of the fluid therethrough. The channel has a non-linear shape with a channel axis extending therethrough. The channel axis is curved to define a spiral flow path therethrough whereby the fluid passing through the channel facilitates rotation of the movable body within the passage of the drill bit.

A self-directing nozzle of a drill bit of a downhole tool and method are disclosed. The drill bit with the nozzle may be used to form a wellbore in a subterranean formation. The drill bit has a passage for fluid to pass through. The nozzle includes a case positionable in the passage of the drill bit and a movable body movably positionable in the case. The movable body has a channel for passage of the fluid therethrough. The channel has a non-linear shape with a channel axis extending therethrough. The channel axis is curved to define a spiral flow path therethrough whereby the fluid passing through the channel facilitates rotation of the movable body within the passage of the drill bit.

A well drilling bit for drilling bedrocks includes a columnar bit body, and a drilling fluid flow path formed in the bit body to wash away drilled cuttings from a bottomhole and/or a periphery of the bit body. The flow path is provided with a venturi mechanism including a venturi tube having a reduced-diameter portion where a cross sectional area is reduced and capable of generating a decompression region around a tip of the bit body, the decompression region being more decompressed than a surrounding by the Venturi effect.

A well drilling bit for drilling bedrocks includes a columnar bit body, and a drilling fluid flow path formed in the bit body to wash away drilled cuttings from a bottomhole and/or a periphery of the bit body. The flow path is provided with a venturi mechanism including a venturi tube having a reduced-diameter portion where a cross sectional area is reduced and capable of generating a decompression region around a tip of the bit body, the decompression region being more decompressed than a surrounding by the Venturi effect.