Abstract: The drilling system withstands downhole conditions at the bottom of the borehole and drilling conditions due to the constant movement and vibration. The drilling system includes a drill bit and a sensor system with a system housing, a primary power supply and interior sensor. The primary power supply includes piezoelectric panels for converting radial vibration into energy. The interior sensor is locally powered by the primary power supply at the remote downhole location at the bottom of the borehole. The interior sensor collects data related to a downhole condition and is in communication with the primary power supply to generate confirmed data based on the amount of energy generated by the primary power supply. The confirmed data is more accurate and reliable than the data collected by the interior sensor and can be used to guide the path of the drill bit through the rock formation in drilling operations.

Abstract: The drilling system withstands downhole conditions at the bottom of the borehole and drilling conditions due to the constant movement and vibration. The drilling system includes a drill bit and a sensor system with a system housing, a primary power supply and interior sensor. The primary power supply includes piezoelectric panels for converting radial vibration into energy. The interior sensor is locally powered by the primary power supply at the remote downhole location at the bottom of the borehole. The interior sensor collects data related to a downhole condition and is in communication with the primary power supply to generate confirmed data based on the amount of energy generated by the primary power supply. The confirmed data is more accurate and reliable than the data collected by the interior sensor and can be used to guide the path of the drill bit through the rock formation in drilling operations.

Abstract: The multi-directional force modulation cartridge system has a modular relationship the drill bit so that the cutting profile of a cutter in the drill bit can be adjusted without requiring modification of the drill bit itself. The force modulation cartridge system includes a cutter and a cartridge. The cutter can be independently replaced due to wear or replaced when the cartridge is replaced. The cartridge includes a holder, a seat, and a cartridge force member. The cartridge can have different holders and seats adjusted for different formations and drilling conditions. The alignment of the holder and the seat is set by a holder sliding angle and a seat sliding angle with the holder sliding surface and the seat sliding surface being parallel and in sliding engagement. A seat post supports the cartridge force member to exert a restoring force according to the holder sliding angle and the seat sliding angle.

Abstract: A polycrystalline diamond compact drill bit includes a steel body connector and a matrix crown. The matrix crown is provided with multiple main blades extending axially. A rear end surface of the matrix crown is provided with a connecting block projecting backwardly. A front end surface of the steel body connector is provided with a connecting groove having a shape matching a shape of the connecting block. The connecting block is inserted into the connecting groove to form an interference fit with the connecting groove. The rear end surface and the front end surface are fitted to each other. The periphery of the connecting block is provided with an inner positioning hole. A periphery of the steel body connector is provided with an outer positioning hole penetrating into the connecting groove at a position corresponding to the inner positioning hole.

Abstract: A drill bit nozzle includes a nozzle body, a channel in the nozzle body, and a nozzle outlet arranged at an end of the nozzle body and in communication with the channel. The nozzle outlet is a strip-shaped outlet configured to eject a sheet-like jet flow. Since the nozzle outlet of the drill bit nozzle is a strip-shaped outlet, the nozzle outlet is able to eject a sheet-like jet flow. When the drill bit nozzle is applied to a PDC drill bit, the drill bit nozzle can uniformly eject a drilling fluid onto each cutting tooth, which ensures that the cutting teeth in the drill bit may obtain good cooling and chip removal effects, while avoiding excessive concentration of the jet flow from the drill bit nozzle which may erode the cutting teeth, thereby prolonging the service life of the drill bit.

Abstract: A polycrystalline diamond compact drill bit is provided according to the present application, including a steel body connector and a matrix crown. The matrix crown is provided with multiple main blades extending axially. A rear end surface of the matrix crown is provided with a connecting block projecting backwardly. A front end surface of the steel body connector is provided with a connecting groove having a shape matching a shape of the connecting block. The connecting block is inserted into the connecting groove to form an interference fit with the connecting groove. The rear end surface and the front end surface are fitted to each other. The periphery of the connecting block is provided with an inner positioning hole. A periphery of the steel body connector is provided with an outer positioning hole penetrating into the connecting groove at a position corresponding to the inner positioning hole.

Abstract: The present application discloses a drill bit nozzle, which includes a nozzle body, a channel in the nozzle body, and a nozzle outlet arranged at an end of the nozzle body and in communication with the channel. The nozzle outlet is a strip-shaped outlet configured to eject a sheet-like jet flow. Since the nozzle outlet of the drill bit nozzle is a strip-shaped outlet, the nozzle outlet is able to eject a sheet-like jet flow. When the drill bit nozzle is applied to a PDC drill bit, the drill bit nozzle can uniformly eject a drilling fluid onto each cutting tooth, which ensures that the cutting teeth in the drill bit may obtain good cooling and chip removal effects, while avoiding excessive concentration of the jet flow from the drill bit nozzle which may erode the cutting teeth, thereby prolonging the service life of the drill bit.

Abstract: A downhole tool is disclosed for measuring wellbore geometry. The downhole tool may include a body with a bore extending at least partially therethrough. The body may include a radial recess. An arm may be movably coupled to the body at a first end portion of the arm. The arm may be within the radial recess in a retracted position and be pivotable in a radially-outward direction relative to the body to an expanded position. A measurement device coupled to the body may measure the pivoting motion of the arm. A piston coupled to the body may be movably coupled to a second end portion of the arm, and the piston may respond to changes in hydraulic pressure to pivot the arm between the retracted position and the expanded position.

Abstract: A turbodrill having a housing having a bore extending at least partially therethrough, a rotatable shaft disposed in the housing bore and rotatable relative to the housing, the housing, the housing bore and the rotatable shaft having a common longitudinal axis; and a plurality of turbine blades disposed at least partially within the housing bore, at least one turbine blade of the plurality of turbine blades including a first blade profile disposed at a first point along a blade span and a second blade profile disposed at a second point along the blade span, the second blade profile differing from the first blade profile.