Patent application number | Description | Published |
20080265151 | Method and system for stabilizing gain of a photomultipler used with a radiation detector - A method for controlling voltage applied to a photomultiplier used in a scintillation counter radiation detector includes determining numbers of voltage pulses having each of a plurality of predetermined amplitudes generated by the photomultiplier in response to radiation events being imparted to a scintillation detector. The numbers of voltage pulses at each of the predetermined amplitudes is conducted to a trained artificial neural network. The artificial neural network generates a signal corresponding to an amount of adjustment to the voltage applied to the photomultiplier. | 10-30-2008 |
20110226470 | SYSTEMS AND METHODS FOR PROVIDING WIRELESS POWER TRANSMISSIONS AND TUNING A TRANSMISSION FREQUENCY - A system transmits a wireless power transmission from a bottom hole assembly of a drill string. The system has a downhole component having a wireless power transmitter adapted to wirelessly transmit at least one wireless power transmission and a wireless power receiver adapted to receive the at least one wireless power transmission. | 09-22-2011 |
20120146415 | POWER ALLOCATION TO DOWNHOLE TOOLS IN A BOTTOMHOLE ASSEMBLY - The present disclosure relates to a method to allocate electrical power among tools in a bottomhole assembly disposed in a wellbore. A bottomhole assembly having an electric generator, an electrical bus, a bus master, and two or more tools is provided. One or more of the two or more tools has selectable power modes. Electrical power, up to a maximum output value, is provided through the electrical bus to the two or more tools using the electric generator. Electronic components of the two or more tools are synchronized, using the bus master to select a normal power mode or a low power mode for each tool having selectable power modes. The combined power requirements of the two or more tools at any given time do not exceed the maximum output value. | 06-14-2012 |
20140083768 | Drilling Bottom Hole Assembly Having Wireless Power And Data Connection - A bottom hole assembly (BHA) configured for use in a drill string of a wellsite drilling system. The BHA includes a measuring-while-drilling (MWD) module, a wireless power and data connection, and a rotary steerable system (RSS). The MWD module is configured for coupling to a drill string, and includes a power generation component and a direction and inclination (D&I) survey package. The wireless power and data connection is disposed above a drilling motor in the drill string and for providing power and data connectivity between the MWD module and the drilling motor. The RSS is coupled to the drilling motor for receiving power from and communicating with the MWD module via the wireless power and data connection and the drilling motor. | 03-27-2014 |
20140083769 | Coiled Tube Drilling Bottom Hole Assembly Having Wireless Power And Data Connection - Various embodiments of methods and systems for providing wireless power and data communication in a drilling assembly. One embodiment includes a system for transmitting power or data communications in a drill string. The system includes a drilling assembly having an inner cylindrical coil located inside an outer cylindrical coil. The inner cylindrical coil is adapted to rotate with respect to the outer cylindrical coil, rotate around an axis of the outer cylindrical coil, or move axially with respect to the outer cylindrical coil. | 03-27-2014 |
20140083770 | System And Method For Wireless Drilling And Non-Rotating Mining Extenders In A Drilling Operation - Various embodiments of methods and systems for wireless power and data communications transmissions to a sensor subassembly below a mud motor in a bottom hole assembly are disclosed. Power and/or communications are transmitted through stationary or fixed coils. By leveraging resonantly tuned circuits and impedance matching techniques for the stationary coils, power and/or communications can be transmitted efficiently from one stationary coil to the other stationary coil despite any vibration and/or misalignment of the two coils. | 03-27-2014 |
20140084696 | System And Method For Power Transmission In A Bottom Hole Assembly - Various embodiments of methods and systems for wireless power and data communications transmissions to a sensor subassembly below a mud motor in a bottom hole assembly are disclosed. In a certain embodiment, a float valve is located above the motor. Power is supplied by a turbine or by batteries located in a subassembly above the float valve. Wires pass through the float valve and connect to an annular coil. Power is transmitted through the annular coil to an inductively coupled second, mandrel coil that is attached to the rotor. By leveraging resonantly tuned circuits and impedance matching techniques for the coils, power can be transmitted efficiently from one coil to the other despite relative movement and misalignment of the two coils. | 03-27-2014 |
20140084946 | System And Method For Wireless Power And Data Transmission In A Rotary Steerable System - Various embodiments for wireless power and data communications transmissions between a cartridge in a rotary steering system and components within a drill collar are disclosed. In a certain embodiment, magnetic fields are used to transfer power and data between the cartridge of a rotary steering system and electronics and/or sensors mounted in the drill collar. A first coil is attached to the pressure housing of the cartridge by a shaft containing wires. The turbine in the pressure housing provides an alternating current to the first coil, which is attached to the shaft. Consequently, the first coil generates an alternating magnetic field that passes through the ferrite surrounding a second coil that is attached by wires to an annular pressure housing that is attached to the drill collar. The alternating magnetic field generates an emf in the second coil, which provides power for electronics and sensors mounted in the drill collar. | 03-27-2014 |
20140090898 | Casing Drilling Bottom Hole Assembly Having Wireless Power And Data Connection - Various embodiments of methods and systems for wireless power and/or data communications transmissions to a sensor subassembly above a mud motor in a bottom hole assembly are disclosed. Power and/or data are supplied by rotary modulator and power generation system positioned above the mud motor. Wires may connect to an annular coil. Power and/or communications are transmitted through the annular coil to an inductively coupled second, mandrel coil that is attached to the rotor. By leveraging resonantly tuned circuits and impedance matching techniques for the coils, power and/or data can be transmitted efficiently from one coil to the other despite relative movement and misalignment of the two coils. | 04-03-2014 |
20140097026 | Positive Displacement Motor (PDM) Rotary Steerable System (RSS) And Apparatus - A motor steering system includes a drill collar, a transmitter circuit having a power transmitting coil, a rotor, and a receiver circuit having a power receiving coil. The transmitter circuit is coupled to the drill collar and the receiver circuit is coupled to the rotor such that the transmitter circuit and the receiver circuit are positioned with respect to one another such that power is coupled from the power transmitting coil to the power receiving coil whereby the drill collar provides electric power to the rotor. | 04-10-2014 |
20140102807 | Inductive Coupler - Example inductive couplers are provided herein. The inductive couplers can provide for the transmission of power and/or communication between downhole tools in a bottom hole assembly. | 04-17-2014 |
20140174733 | Power Generation Via Drillstring Pipe Reciprocation - A wireline configurable toolstring is conveyed within a wellbore extending into a subterranean formation via a tubular string to which the wireline configurable tool string is coupled in a manner permitting relative motion of the wireline configurable toolstring and the tubular string. The wireline configurable toolstring converts rotary motion imparted by rotation of the tubular string, or by fluid flow resulting from reciprocation of the tubular string, into electrical energy. The wireline configurable toolstring also comprises at least one wireline configurable instrument powered by the electrical energy. | 06-26-2014 |