Well telemetric system with voice coil type drive

FIELD: physics.

SUBSTANCE: pulse telemetric system is proposed for transmitting digital data from a borehole to a surface block, comprising: a drill pipe disposed in a borehole comprising an upstream end and at least a portion of a drilling fluid; one or more borehole sensors; a processing unit connected to one or more borehole sensors; a valve connected in fluid with the drilling mud to control the pressure in the drill pipe near the front during the end of conditioning the pressure oscillations in the drilling mud to transmit data through the drilling mud. The valve comprises a voice coil type drive to form pressure drops in the drilling fluid. In this case, the processing unit comprises a speed sensor configured to measure the speed of the voice coil type drive, and wherein the processing unit is arranged to control the position of the voice coil type drive based on the measured speed.

EFFECT: providing higher data transfer performance, extending the lifetime of the telemetric system elements.

17 cl, 7 dwg

 



 

Same patents:

FIELD: physics, acoustics.

SUBSTANCE: invention relates to microwave electroacoustics and is the basis for designing stabilised spectrum generators, narrow band-pass filters, highly sensitive sensors and other microwave frequency-setting elements for communication, automation and radar equipment. The multifrequency resonator on volume acoustic waves comprises an acoustic line and an acoustic vibration source, which includes a piezoelectric crystal, top and bottom metal electrodes, wherein the acoustic vibration source is placed on one of the surfaces of the acoustic line, the acoustic line is made from an oriented diamond monocrystal with crystallographic planes of sections (100) or (110) or (111), which correspond to propagation directions of clean longitudinal modes.

EFFECT: high stability of generation frequency and minimum phase noise in a wide frequency range.

4 cl, 3 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to radio engineering and can be used in power amplifiers of broadband radio transmitters. The harmonic filter for a short-wave transmitter comprises N LC-filters which are switched at the input and the output by input and output switches, each filter comprising a first and a second inductance coil in longitudinal arms connected to each other, and a capacitor connected between the point of connection of the inductance coils and a common bus, a variable capacitor which is common for all LC-filters; each LC-filter includes a step-down autotransformer, the secondary winding of which is connected in parallel to the capacitor, and the primary winding to the variable capacitor through one of N additional switches, wherein the variable capacitor is in form of a set of capacitors which are switched by a control device.

EFFECT: providing matching in the entire operating frequency band of a radio transmitter while simplifying tuning processes.

2 cl, 1 dwg

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to radio engineering and can be used in harmonic filters of power amplifiers of short-wave radio transmitters. The harmonic filter of a short-wave transmitter comprises in its middle part N middle inductance coils, where N is the number of frequency subbands, a first variable capacitor connected to the first terminal of each middle inductance coil through one of N first switches, and a second variable capacitor connected to the second terminal of each middle inductance coil through one of N second switches, N input inverted L-shaped links, each consisting of two inductance coils, the connection point of which is connected to the first terminal of the corresponding middle inductance coil, and N output inverted L-shaped links, each consisting of two inductance coils, the connection point of which is connected to the second terminal of the corresponding middle inductance coil, input switches and output switches.

EFFECT: matching a harmonic filter in the entire operating frequency range of a radio transmitter and a high transmission coefficient while reducing the level of harmonic components of the transmitted signal.

2 cl, 1 dwg

FIELD: testing technology.

SUBSTANCE: method of filtering non-stationary signals is performed by correlation reception of pre-recorded on the data medium, followed by isolation of the desired signal, and search for the desired signal is carried out simultaneously with memorization of instantaneous values of the correlation function and the spectral density of the signal, their comparison and identifying differences between the respective characteristics from stationary signs, and evaluation of amplitude-frequency range of the desired signal is carried out.

EFFECT: extraction of non-stationary signals having limited duration, of arbitrary shape and frequency spectrum.

3 cl, 2 dwg

FIELD: physics.

SUBSTANCE: multichannel reflecting delay line on surface acoustic waves is made on a substrate of piezoelectric material, having an input transducer, reflecting elements with output contacts connected to an external load. The reflecting elements are in form of interdigital transducers. The input transducer consists of n separate identical interdigital transducers connected in parallel, each forming a separate acoustic channel. Reflecting elements are mounted in each acoustic channel on each side of the interdigital transducer. The reflecting elements in the acoustic channels on each side lie on one line and equidistant from the edges of the substrate. The output contacts of the reflecting elements are connected to a controllable load in form of an inductor, a capacitor or a resistor. The n separate identical interdigital transducers are arranged along a line having an angle of inclination α to the line of reflecting elements.

EFFECT: high reliability of receiving and processing an information signal, high technological effectiveness of assembly operations.

1 dwg

Rejection lc-filter // 2520422

FIELD: radio engineering, communication.

SUBSTANCE: rejection LC-filter comprises a low-pass filter which consists of N inductance coils connected in series to each other, wherein each of the leads of said inductance coils is connected to a capacitor and second leads of the capacitors are connected to a common bus. The first lead of the first inductance coil of the low-pass filter is connected to a first circuit consisting of parallel-connected inductance coil and capacitor; the second lead of the last inductance coil of the low-pass filter is connected to a second circuit consisting of parallel-connected inductance coil and capacitor; the second lead of the second circuit is connected to the output potential terminal of the filter.

EFFECT: improved frequency response unevenness and high transmission coefficient in the operating frequency band while providing the required rejection of one of given frequencies.

2 dwg

FIELD: radio engineering, communication.

SUBSTANCE: tunable band-pass LC-filter comprises a band-pass circuit which consists of a first inductance coil, the first terminal of which is connected to a first capacitor, the second terminal of which is connected to a second capacitor, the second terminal of which is connected to a second inductance coil, the second terminal of which is connected to a common bus, and a third, fourth, fifth, sixth, seventh and eight capacitor.

EFFECT: improved selectivity and broader functional capabilities by enabling frequency tuning.

4 dwg

FIELD: radio engineering, communication.

SUBSTANCE: frequency-selective device for processing surface acoustic wave signals includes a layered acoustic line made of a phononic crystal in form of an elongated plate, on one wide face of which there is a layer of solid substance with acoustic impedance, different from the material of the acoustic line, and at least two electroacoustic transducers connected to the acoustic line; the phononic crystal plate is formed by an array of separate extended elements arranged in a matrix, wherein the longitudinal axis of said elements matches the width of the plate; the layer of solid substance completely covers the surface of the plate, wherein the input electroacoustic transducer is capable of exciting Love surface acoustic waves in the layer of the solid substance and is placed on the wide face at one end of the plate; the layer of solid substance in the direction of the length of the plate has an area with a variable thickness; receiving electroacoustic transducers are placed at the other wide face of the plate.

EFFECT: high resolution of the frequency-selective device for processing surface acoustic wave signals during concurrent processing of signals at different frequencies.

6 cl

FIELD: radio engineering, communication.

SUBSTANCE: method is carried out using an acoustoelectronic device which employs an acoustic line which consists of a monocrystal of a lanthanum-strontium manganite composition La1-xSrxMnO3 (0.12≤x≤0.18) with thermally controlled speed of volume or surface acoustic waves near structural phase transition. The device has an acoustic line having at its ends wideband volume or surface acoustic wave converters, and a thermoelectric temperature controller.

EFFECT: design of a controlled acoustoelectronic device capable of operating on both volume and surface acoustic waves.

3 dwg

FIELD: electricity.

SUBSTANCE: disclosed are three versions of a device for wireless transmission of energy, one of which includes: at least one solid-state magnetostrictive resonator in form of a rod; at least one rod made of soft magnetic material placed in the immediate vicinity of said resonator at a distance not greater than its length; at least one converting coil wound around or placed near said resonator or rod made of soft magnetic material at a distance not greater than the length of the resonator or rod, as well as two versions of a method of matching devices for wireless transmission of energy and three versions of a system which is based on using the disclosed methods and includes the disclosed devices.

EFFECT: high efficiency systems for wireless transmission of energy.

26 cl, 9 dwg

FIELD: electricity.

SUBSTANCE: method to make an integral high-Q silicon micromechanical resonator includes formation of dead holes in a single-crystal silicon substrate at the side opposite to the working layer of a SOI plate, and those holes reach to the working layer of the SOI plate, a resonator structure is also formed in the working layer of the SOI plate, which is connected with sections in the form of solid areas of single-crystal silicon, which cover dead holes in the single-crystal silicon substrate, a sacrificial layer is removed from under the resonator structure, the SOI plate is connected in high vacuum with a dielectric plate, having a groove arranged above the resonator structure, metal contact sites are formed on the open side of sections of single-crystal silicon that cover dead holes in the single-crystal silicon substrate, and the SOI plate and the dielectric plate are separated into crystals.

EFFECT: reduction of parasite capacitance of resonator contacts, increased sensitivity of the resonator due to reduction of a parasite signal and improved manufacturability.

3 cl, 8 dwg

FIELD: chemistry.

SUBSTANCE: invention can be used in designing and optimising metrological characteristics of piezoelectric quartz crystal sensors in analytical chemistry. The invention pertains to design of a piezoelectric quartz crystal sensor which is modified with thin (tens of nanometres) highly-reinforced calix[4]resorcinarene films for detection of vapours of organic solvents. The method involves modification of the surface of the sensor with a Langmuir-Blodgett diphilic aminomethylated calix[4]resorcinarene film, where the film contains 15 to 25 monolayers at surface pressure of 25 mN/m.

EFFECT: high reproducibility of sensor signal (±3 Hz) with short response time (10-15 sec) and long mean life.

3 tbl

FIELD: analytical chemistry; covering piezoelectric crystal resonators with film.

SUBSTANCE: proposed method that may be found useful in redeveloping and optimizing parameters of mass-responsive sensors includes preparation of sorbent solution, its application to electrodes, and removal of free solvent from film. Resonator electrodes are held in vapors of sorbent solution heated to boiling temperature for 10 - 30 s. Used as sorbents are ethanol solutions of bee-glue of 20% mass fraction or Triton X-100 of 1% mass fractions. Proposed method provides for high sensitivity in determining materials by way of piezoelectric crystal microweighing due to reduced error in sorbent application and dispensing with additional high-cost tools.

EFFECT: enhanced frequency stability, reduced zero-signal drift, reproducible response, facilitated fuel application.

1 cl, 3 tbl, 12 ex

FIELD: oil and gas industry.

SUBSTANCE: configuration for obtaining of data transmission impulses in drilling fluid of a drilling column is offered which contains a sliding valve comprising a valve element, installed in the valve channel, hydraulically interconnected with the fluid medium flow channel in the drilling column to which the configuration is connected. The valve element is connected to the mechanism performing reciprocating movement, containing the balance weight, the driven cranked device and the sliding element making the sliding connection between the cranked device and the balance weight. Besides, the configuration contains the sliding element connected through the rotary hinge with the cranked device, it is fastened to the balance weight for rotation around the valve axis and is radially sliding with reference to the balance weight, so the rotation of the cranked device results in rotary reciprocating movement of the balance weight and, therefore, of the valve element around the valve axis for obtaining the data transmission impulses in drilling fluid.

EFFECT: improved reliability and efficiency of signal transmission through hydraulic communication path.

25 cl, 16 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil producing industry and is designed for generating pressure pulses in drilling agent in drill string and for measurements during drilling. For this purpose the bell of the pulse generator travels up and down to shift drilling agent from pressure reservoir into a chamber of sliding pressure and out of it and along corresponding upper and lower connecting channels. The bell is actuated by means of certain sequence of manipulations performed with solenoids with a bidirectional disk valve. The circular channel of the pulse generator is designed to decrease turbulence of drilling agent flow and to generate practically laminar flow in a pulsation region. A pulse or absence of a pulse is converted into a digit signal transmitted to surface with a pressure sensor implementing algorithm of decoding. Further a signal is visualised by a drill foreman and operators who obtain valid data about direction and geologic formation; these data assist an operator in determining direction of drilling. Additional pulse generators increasing rate of data transmitting can be introduced in the given instrument. Raised velocity of data transmitting facilitates obtaining more thorough information, decreases drilling expenditures and increases yield of oil deposit.

EFFECT: raised information value and reliability of methods and facilities due to insensitivity of facility to flow velocity and pressure; skipping over adjustment during operation; forming recognisable, repeated, reproducible and pure signals of pressure pulses at minimal consumption of power.

37 cl, 4 dwg

FIELD: oil and gas production.

SUBSTANCE: group of inventions relates to oil and gas industry, particularly to field of control of drilling operations. System includes at least one slush pump for delivery of mud from tank for its storage to drilling equipment, pumping main, connected to ability of flowing of liquid with mud and drilling equipment, blowing line, connected to ability of flowing of liquid with drilling equipment and providing for return of mud into tank for mud storage and modulator for mud, connected to ability of liquid flowing at least with one element from group, consisting of pumping main and blowing line.

EFFECT: there is provided automation and effectiveness increase of control of drilling processes.

43 cl, 16 dwg

FIELD: oil and gas production.

SUBSTANCE: invention refers to geo-physical survey in wells, particularly to analysis and processing of data received from facility of acoustic logging. Method of evaluation of interval time of wave travel in drilling agent consists in evaluating interval time as function of frequency for waves in fluid on base of set of measurements received by means of facility for acoustic logging in borehole; method also consists in evaluation of interval time for drilling agent on base of interval time determined as frequency function for waves in fluid. System for evaluation of interval time for drilling agent consists of a processor and memory, also memory stores a program with commands for determination of interval time as frequency function for waves in fluid on base of the set of measurements received by means of the facility of acoustic logging in a borehole.

EFFECT: upgraded accuracy and information value of acoustic logging by means of selecting waves of various types.

12 cl, 24 dwg

FIELD: well drilling, possible use during transfer of measured face information during drilling through hydraulic communication channel.

SUBSTANCE: device contains cylindrical body with electronic unit for geophysical research, power source unit, power controller and executing mechanism mounted in it, executing mechanism includes spring-loaded locking valve, connecting tubular space of drilling pipes to annular space, upper spring-loaded and lower pilot valves with electromagnet, positioned in hollows filled with liquid. Hollow of lower pilot valve is connected by hydraulic channel to annular space. Hollows of locking valve and upper spring-loaded pilot valve, and hollows of lower pilot valve and hydraulic valve are connected by reverse valves.

EFFECT: increased durability of device.

1 dwg

FIELD: mining industry.

SUBSTANCE: system has setting bushing and well block, having pulse generator, stator and rotor of which have longitudinal channels, holder of rotor relatively to stator, hydraulic turbine and electro-generator, rotor of which is set on same shaft with hydraulic turbine rotor. Body of fixer is connected to upper portion of shaft of pulse generator rotor. Guiding apparatus of hydraulic turbine is made in setting bushing in form of evenly distributed around circle longitudinal grooves, forming same angle with diametric plane, different from 0°. Rotor of hydraulic turbine is provided with longitudinal blades and connected to rotor of pulse generator by friction sleeve, made in form of engaged disks and cylindrical torque spring, by one end connected to pulse generator rotor, and by other end - to lower engagement disk. Upper engagement disk is connected to hydraulic turbine rotor end. Anchor of electromagnetic drive of fixer can have longitudinal hydraulic channels, and in its end working space non-magnetic washer can be mounted.

EFFECT: higher trustworthiness, higher precision, broader functional capabilities.

2 cl, 8 dwg

The invention relates to drilling wells and can be used to control downhole parameters during drilling

FIELD: mining industry.

SUBSTANCE: system has setting bushing and well block, having pulse generator, stator and rotor of which have longitudinal channels, holder of rotor relatively to stator, hydraulic turbine and electro-generator, rotor of which is set on same shaft with hydraulic turbine rotor. Body of fixer is connected to upper portion of shaft of pulse generator rotor. Guiding apparatus of hydraulic turbine is made in setting bushing in form of evenly distributed around circle longitudinal grooves, forming same angle with diametric plane, different from 0°. Rotor of hydraulic turbine is provided with longitudinal blades and connected to rotor of pulse generator by friction sleeve, made in form of engaged disks and cylindrical torque spring, by one end connected to pulse generator rotor, and by other end - to lower engagement disk. Upper engagement disk is connected to hydraulic turbine rotor end. Anchor of electromagnetic drive of fixer can have longitudinal hydraulic channels, and in its end working space non-magnetic washer can be mounted.

EFFECT: higher trustworthiness, higher precision, broader functional capabilities.

2 cl, 8 dwg

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