245results about "Vibration devices" patented technology

An apparatus for damping vibrations includes an inertial mass disposed in a cavity in a rotatable downhole component, the rotatable component configured to be disposed in a borehole in a subsurface formation, such as a resource bearing formation, the inertial mass coupled to a surface of the cavity by a damping fluid and configured to move within the cavity relative to the downhole component. The apparatus also includes a damping fluid disposed in the cavity between the inertial mass and an inner surface of the cavity, where rotational acceleration of the rotatable downhole component causes shear in the damping fluid to dissipate energy from rotational acceleration of the rotatable downhole component and causing the rotational acceleration to be reduced.

The utility model discloses a novel ultrasonic plug-removing and injection-increasing device and relates to the technical field of oil extraction. A piezoelectric ceramic tube is installed in the protection tube, an inner hole of the protection tube is a conical hole with the diameter of the lower portion becoming larger, the piezoelectric ceramic tube is of a conical tube structure, the taper of the piezoelectric ceramic tube is the same as that of the protection tube, the upper end face of the lower connector abuts against the bottom face of the piezoelectric ceramic tube, and the lower connector does not make contact with the transverse end face of the protection tube. The utility model has the beneficial effects that the inner hole of the protective tube and the piezoelectric ceramic tube are made into a conical structure, the piezoelectric ceramic tube is assembled into the protective tube from the lower part, and when the lower joint is in threaded connection with the protective tube, the piezoelectric ceramic tube is moved upwards; the piezoelectric ceramic tube and the protection tube are tightly matched together, the transmission efficiency of ultrasonic waves is improved, and the blocking removal and injection increasing effects are improved.

The invention belongs to the technical field of drilling, and particularly relates to a manganese ore water-sensitive stratum geological drilling plugging enhancing method which comprises the following steps: step 1, injecting drilling mud containing a plugging material into a drill hole in a drilling process; and 2, vibration or pulse is applied to the slurry through a ground or underground device. According to the method, vibration or pulses are applied in the drilling process, so that pore throats and micro cracks near the well wall generate a periodic opening and closing effect, and a plugging material is continuously driven to enter and is compacted step by step under the action of dynamic pressure and is not limited to the surface layer of the well wall any more, so that the deepness, compactness and anti-scouring capacity of a plugging layer are improved; the safety and continuity of water-sensitive stratum drilling are enhanced, and the method has a good application prospect in the technical field of geological drilling.

The invention relates to the technical field of petroleum engineering well cementation, and discloses a well cementation construction process of a highly-deviated well, which comprises the following steps of: cleaning an oscillating foundation, and stripping well wall pollutants by generating an oscillating effect through periodically changing circulating pressure and flow velocity; electrochemical synergistic cleaning is carried out, and organic pollutants are decomposed through the electrolysis effect; catalytic decomposition cleaning accelerates fracture of a mud cake polymer molecular chain; carrying out ion exchange treatment to change a pollutant charge distribution state; and a circulating purification step: removing reaction products in real time and recovering reaction conditions. Physical and chemical composite cleaning is achieved through the synergistic effect of multiple processes, highly-deviated well annulus pollutants are thoroughly removed, and the well cementation quality and the shaft sealing performance are remarkably improved.

The invention relates to an ultrasonic vibration anti-core-blocking drilling tool and a drilling method thereof, and belongs to the technical field of drilling engineering.The drilling tool is composed of an outer pipe system, an inner pipe system and an ultrasonic vibration system; ultrasonic vibration is applied to an inner pipe system, core blocking, bridging and adhesion in core drilling in complex stratums such as fracture development, broken stratums and water-sensitive stratums are effectively prevented, moving resistance of the core in the inner wall is greatly reduced, core blocking is prevented, the core recovery rate and the drilling speed are increased, and the core drilling efficiency is improved. The method can adapt to various complex stratums by adjusting ultrasonic vibration parameters, and is wide in stratum adaptability, high in universality and easy and convenient to operate.

The invention provides a microwave pulse electric field vibration synergistic fracturing and permeability increasing gas extraction promoting device and method, and relates to the technical field of low-permeability coal seam fracturing and permeability increasing. According to the method, multi-physical field coupling synergistic interaction is achieved, and the fracturing efficiency and range are greatly improved. According to the invention, deep collaboration of multiple physical fields is realized through a specific time sequence and energy ratio. The thermal stress generated by microwave preheating enables a large number of microcracks to be generated in the coal body and soften the coal quality, and the resistivity and the medium strength of the coal body are reduced. In the state, the pulsed electric field with lower voltage can preferentially and effectively break down and expand the fracture network along the micro-fracture path; meanwhile, high-frequency mechanical vibration not only efficiently transmits energy to the tip of the fracture to generate stress concentration to promote extension of the fracture, but also disturbs coal particles to promote gas desorption. Through three-field cooperation, cracks can be more efficiently initiated, expanded and communicated in a three-dimensional space, a three-dimensional complex crack network far beyond the action range of a single technology is formed, and the overall permeability of a coal seam is remarkably improved.

A system can be provided that can include a measurement tool that can be coupled to a conveyance mechanism for positioning the measurement tool downhole in a wellbore. The wellbore can be encased by a tubular. The system can further include a vibration-inducing device that can cause the tubular to vibrate. Additionally, the system can include an interferometer coupled to the measurement tool for detecting the vibration in the tubular. The system can further generate data useable to determine at least one status of the tubular and at least one status of a cement layer. The cement layer can be positioned between the tubular and a subterranean formation surrounding the wellbore.

The invention discloses an advanced grouting reinforcement method. The method comprises the steps that S1, drill holes are formed in the periphery of a roadway to be excavated in advance; s2, high-pressure water is injected into the drill hole to open an original closed crack in the surrounding rock; and S3, an ultrasonic transducer is placed in the drill hole, the ultrasonic transducer generates ultrasonic waves to enable water in the crack to vibrate, and meanwhile, grouting is conducted in the drill hole adjacent to the drill hole where the ultrasonic transducer is placed. According to the advanced grouting reinforcement method, the grouting range is widened, the grouting amount is increased, and the forming quality and stability of the inner section of the roadway are guaranteed.

The invention relates to a variable-amplitude hydraulic oscillator, and belongs to the technical field of petroleum and natural gas well drilling matching tools. The tool aims at solving the problems that a traditional hydraulic oscillator is single in vibration mode, and equipment is prone to damage and low in efficiency due to the fact that the amplitude cannot be adjusted. The device structurally comprises a flow conversion short section, an axial vibration short section, a power short section and a radial vibration short section which are connected in sequence. The flow conversion short section achieves switching of a high amplitude mode, a low amplitude mode and a closing mode through the synergistic effect of a hole-shaped piston, a ratchet wheel and a flow channel conversion mandrel and by means of interruption and recovery of fluid flowing. The axial vibration short section adopts a two-stage piston structure to generate efficient axial vibration, the power short section is matched with a dynamic valve plate and a static valve plate through a screw rotor to generate high-frequency pressure pulses, and the radial vibration short section forms transverse vibration by means of centrifugal movement of a pendulum ball. By adjusting the fluid path, the tool can output shock waves of different amplitudes, friction between a drilling tool and the well wall is reduced, and meanwhile fluid pressure is maintained in a closed mode so that clamping stagnation of a pipe column can be avoided. The invention has the beneficial effects of prolonging the service life of equipment, improving the drilling efficiency, reducing the risk of jamming of the drilling tool and adapting to complex formation conditions.

The invention discloses a low-power-consumption beat traveling wave driving method for an ultrasonic-assisted drilling sampling device, which comprises the following steps: a driving control system gives a group of high-frequency sine wave signals and a group of low-frequency sine wave signals, and the high-frequency sine wave signals and the low-frequency sine wave signals are superposed to form new beat frequency wave signals; an ultrasonic transducer is driven through a beat frequency signal, and an electric ceramic piece of the ultrasonic transducer is subjected to mechanical deformation so as to excite longitudinal vibration of an ultrasonic drill; the maximum amplitude of beat traveling waves generated by superposition of two groups of sine waves is increased under the condition that the average power of the ultrasonic drill is not changed, so that the efficiency of ultrasonic-assisted particle movement is further improved, the critical rotating speed of a main shaft is reduced, the sampling efficiency of soil particles is improved, and the energy consumption of the whole system is reduced; in addition, a passive damping section is arranged at the non-excitation end of the ultrasonic drill rod, traveling waves transmitted from the excitation end are absorbed, and standing waves are prevented from being generated.

The invention provides a high-fidelity soil acquisition method based on pore water electrolysis resistance reduction, which comprises the following steps: step 10, drilling to an underground water level position at a sampling point to form a preformed hole; step 20, inserting a plurality of electrode plates around the sampling point; penetrating a sampling drill rod from the preformed hole, connecting the sampling drill rod with a negative electrode of an adjustable power supply, and connecting an electrode plate with a positive electrode of the adjustable power supply; in the process that the traction unit drives the sampling drill rod to penetrate into the position below the underground water level, the electrode plate and the sampling drill rod are powered on, interstitial water in the soil body near the sampling drill rod is electrolyzed, and bubbles are generated; meanwhile, the vertical vibration unit drives the sampling drill rod to vibrate in a reciprocating manner in the vertical direction, and the soil body near the sampling drill rod is induced to be liquefied until the soil sample in the preset sampling depth range is taken out. According to the high-fidelity soil collection method based on pore water electrolysis resistance reduction, disturbance is reduced, the soil structure is prevented from being obviously changed, and the fidelity effect of the soil sample is improved.

The invention relates to the technical field of petroleum and natural gas exploration and development, in particular to a pulse rotational flow well cementation oscillator and a using method thereof. The pulse rotational flow well cementation oscillator comprises a shell, the bottom of the shell is rotationally connected with a guide shoe cap, an installation disc is arranged in the shell, the top of the installation disc is provided with a piston cylinder, the upper end of the piston cylinder is open, the piston cylinder and the shell form an annulus, the installation disc is provided with an inclined rotational flow hole communicated with the annulus, and an upper side hole communicated with the annulus is formed in the upper portion of the side wall of the piston cylinder. The bottom of the rotating shaft rotatably penetrates through the piston cylinder and the mounting disc, an upper turntable hydraulically driven to rotate is arranged at the top of the rotating shaft, a first inclined hole communicated with the piston cylinder and a second inclined hole communicated with the annulus are formed in the upper turntable, the rotating shaft is connected with the piston through a cam mechanism, and when the rotating shaft rotates, the piston vertically ascends and descends along the piston cylinder to block or unblock the upper side hole. Through the combination of pulse agitation and rotational flow, the uniform distribution degree of well cementation liquid and the well cementation quality are greatly improved, the eccentric guide shoe cap is rotationally connected with the shell, and the tripping-in efficiency of a well cementation pipe string can be improved.

An agitator deployable in a wellbore includes a housing including a central axis and a central passage, a valve including a first valve body having a first contact face and a second valve body permitted to rotate relative to the first valve body and having a second contact face configured to contact the first contact face, a first valve adapter including a first receptacle which receives at least a portion of the first valve body to couple the first valve adapter to the first valve body, and a flexible valve configured to permit the first valve body to flex relative to the first valve adapter whereby an angular misalignment may form between a central axis of the first valve body and a central axis of the first valve adapter.

A method for displacing a tubular string in a wellbore can include axially vibrating the tubular string at a surface location, and reducing friction between the tubular string and the wellbore due to the axially vibrating. The axial vibration may be imparted by operation of an injector assembly. The axial vibration may be imparted by operation of a vibration tool connected between the injector assembly and a wellhead or a support structure that suspends the injector assembly. The axial vibration may be imparted by varying a flow rate of fluid into the tubular string.

Systems and methods for generating hydrogen are provided. The system includes a silica generator configured to generate an injection fluid comprising silica particles, an injection apparatus configured to inject the silica injection fluid into a target zone of an injection well, and a sonicator configured to transmit sound waves to the target zone of the injection well. The method includes generating an injection fluid comprising silica particles, injecting the injection fluid into the target zone of the injection well, and sonicating the target zone of the injection well, thereby generating hydrogen.

The invention belongs to the technical field of mineral resource exploration, and particularly relates to an ultrasonic vibration assisted rock breaking device and a drilling method. The ultrasonic vibration assisted rock breaking device comprises a rack and loading system, a rotary drilling system, an ultrasonic vibration system and a measurement control system. Current is transmitted to a piezoelectric ceramic group through a conductive slip ring and a carbon brush of the ultrasonic vibration system, the piezoelectric ceramic group is excited to generate ultrasonic vibration, and amplified high-frequency vibration is continuously transmitted to a drill rod and a drill bit of the rotary drilling system which rotates at a high speed through an amplitude-change pole type ultrasonic vibrator; and rotation-vibration composite rock breaking is achieved. The method comprises the steps of preparing a rock sample and setting initial parameters, fixing the rock sample, applying axial drilling pressure, starting drilling fluid circulation, starting rotary drilling, starting ultrasonic vibration, and performing real-time monitoring and self-adaptive adjustment, the parameters can be adjusted in real time according to rock stratum changes, the rock breaking efficiency of the hard rock stratum is remarkably improved, the drilling load is reduced, and the drilling efficiency is improved. And the service life of the drill bit is effectively prolonged.

The present invention discloses a continuous tubing jar, comprising a connecting tube, wherein one side of the connecting tube is threadedly connected to a pressure tube, the other side of the pressure tube is threadedly connected to a spline tube, the interior of the connecting tube is threadedly connected to a punching tube, the interior of the pressure tube is slidably connected to a spline shaft, two groups of pistons and sealing rings are oppositely connected at both ends of the outer side of the spline shaft, a plurality of connecting plates are fixedly connected at equal distances to one side of the inner wall of the sealing ring, and a piston is fixedly connected to the end of the connecting plate away from the sealing ring, and wireless liquid sensors are bolted to both sides of the connecting plate. The present invention uses a micro-oil pump and oil pipe inside the sealing ring, and after the piston oil leaks, the oil pump can be used to re-pump the leaked hydraulic oil into the cavity, actively processing the leaked hydraulic oil and avoiding the situation where the device cannot be used after the hydraulic oil is lost.

The invention relates to a device for generating oscillations for a construction machine, comprising a housing, a piston which is movable back and forth in a working chamber in the housing between a first return point and a second return point, a pressurized fluid supply through which in each case pressurized fluid can be fed into and discharged from the working chamber via at least one actuatable control valve in the region of the first return point and the second return point, wherein the piston can be induced into a reciprocating motion in order to generate the oscillations, and a control unit which is configured to actuate the at least one control valve and by means of which the movement of the piston in the working chamber is controllable and variable. According to the invention, it is provided that the control unit is configured to control the piston in a first operating mode for generating oscillations and in a second operating mode for generating impact pulses, wherein a strike surface is formed on at least one end side of the working chamber, onto which surface the piston strikes when it reaches at least one return point in order to generate an impact pulse.

Provided is a downhole vibrating tool comprising an interconnected power section, axial shock assembly and lateral vibration assembly wherein the power section comprising a rotor and a stator, the rotor comprising a plurality of lobes and the stator comprising a second plurality of recesses adapted to receive the plurality of lobes, the number of recesses greater than the number of lobes; the axial shock assembly comprising a valve assembly, the axial shock assembly adapted to vary fluid flow therethrough; and the lateral vibration assembly comprising an eccentric mass; wherein the power section, the axial shock assembly and the lateral vibration assembly are aligned linearly.

A downhole tool, for removing sections of metal tubing, said downhole tool comprising at least one conductive element being arranged to corrode a section of metal tubing using an electrolytic process, said conductive element being made of electric conductive material, an apparatus to establish a connection to the metal tubing, and a source of electrical power.

The present application relates to oilfield coiled tubing operation technical field, and disclose a kind of self-excitation type full metal drilling pulse generator, mainly by power system and oscillation system composition;The power system includes full metal helical stator and rotor;The rotor is rotated in full metal helical stator inside and form helical sealed cavity between each other;The oscillation system includes swing block seat and swing block of screw connection in the bottom of full metal helical stator;The swing block seat and swing block are hot mounted between each other, and swing block seat and swing block are interference fit;Fixed block is arranged in the bottom of the swing block;The top joint is connected in the top of the full metal helical stator, and the rotor end stopper is built-in in the top joint;By reducing drilling tool friction resistance, static friction is converted into dynamic friction, so as to significantly improve drilling speed, ensure the stable control of well trajectory;Adopt full metal stator and rotor power structure, effectively expand temperature use range and corrosion resistance range.

A device for generating pressure waves in a well or a wellbore is described. The device includes a housing containing an impact-generating mechanism for generating the pressure waves and a connector for connecting the housing to a conveyor for transporting the device to any desired location within the well or the wellbore. The device may be used for a number of downhole applications such as cleaning perforations, fracturing processes, vibration of a casing to prevent fluid flow in a cemented annulus, hydraulic jar operations for freeing stuck downhole objects, generating data to optimize pumping parameters and as an enhancement to percussion drilling techniques.

A method for stimulating hydrogen production from an injection formation. This method includes the steps of providing a well traversing a subsurface into an injection formation containing hydrocarbons. Carbon dioxide, water, steam, and combustion gas are introduced into the injection formation via the well. Further, the injection formation is stimulated using one or more of infrasonic, sonic, and ultrasonic stimulation. The injection formation is monitored via one or more sensors located in the injection formation to determine one or more properties of reactions in the injection formation and the flow back effluent. Flowback operations are conducted to retrieve flowback effluent.

The large-drift-diameter hydraulic bidirectional jar comprises an inner pipe assembly, an outer pipe assembly, a time delay mechanism and a sealing assembly, and the inner diameter of the inner pipe assembly is not smaller than 57 mm so that an inner cutting knife can penetrate through the inner pipe assembly. According to the hydraulic two-way jar, the inner diameter of the hydraulic two-way jar is enough for an inner cutting knife to penetrate through so as to facilitate the cutting and fishing operation of a workover pipe column, meanwhile, the hydraulic two-way jar can improve the installation and maintenance convenience and the use reliability, and the tool cost can also be reduced.

The control method comprises the steps that after a first electromagnet and a second electromagnet are powered on to generate a magnetic field, the polarity direction of the first electromagnet or the second electromagnet is controlled, and the second electromagnet is driven by magnetic force with the direction changing to repeatedly jar a force transmission piston in a sliding cavity; the force transfer piston is in sliding connection with the inner wall of the inlet section of the oil cylinder so as to transfer force borne by the force transfer piston to a force transfer medium of the oil cylinder; when the force transmission piston is not stressed, the first reset spring is reset; the vibrating piece is in sliding connection with the inner wall of the outlet section of the oil cylinder and is driven by the force transmission medium to jar a target object to generate vibration; and when the vibration piece is not stressed, the vibration piece is reset by the second reset spring. And finally, the unbuckling device continuously jarring the coupling on the basis of the resonant frequency. Impurities adhered in a thread gap of the coupling are loosened through vibration, a thread buckle between the coupling and a sleeve is loosened, and it is guaranteed that the coupling can be smoothly disassembled in the follow-up back-off operation.

This invention discloses a rapid cleaning device for grouting ports, comprising: an embedded ring seat, which is embedded and fixed in the grouting hole at the hole opening position; a side borehole is vertically drilled on one side of the grouting hole, the inner diameter of the side borehole is smaller than the diameter of the grouting hole, and the depth of the side borehole is greater than half the depth of the grouting hole; a vibrating hole assembly is provided in the embedded ring seat, the vibrating hole assembly can slide into the grouting hole; a channel is provided laterally between the side borehole and the grouting hole, the channel being two channels arranged vertically; and a circulation drainage assembly is also provided in the side borehole.

Apparatus and methodologies herein relate to downhole tools capable of creating a vibration, and more particularly for creating and controllably adjusting tunable pressure pulses for imparting vibration to a downhole drill string. Various pressure pulse settings, and corresponding performance parameters, may be selected by controllably restricting fluid flow through the apparatus.

An accurate and elegant model is provided to characterize HFTO. For Type 1 HFTO, the model can predict frequency of the HFTO based on the distance between a reference location on the bottomhole assembly (e g., the end of the drill bit) and a point 40% up the motor. In short BHA strings there is the fundamental frequency while in longer BHA the first harmonic is used. For Type 2 HFTO, the model can predict frequency of the HFTO based on distance between a reference location on the bottomhole assembly (e.g., the end of the drill bit) and the first slick contact point, which is optionally in the middle of a long flex joint.

A friction reduction tool and assembly are selectively activatable to produce fluid pressure pulses in downhole operations. The assembly includes a variable choke assembly having a rotary component and a stationary component, each with passages that enter into and out of alignment when the rotary component rotates with respect to the stationary component when driven by a rotor. The rotary component, stationary component, and rotor each have a central bore defining a central passage permitting fluid flow from above the assembly to below the assembly.

The present invention discloses a high-efficiency lifting method and pipe string for graded pumping assistance in deep oil and gas reservoirs. The method includes the following steps: collecting early production data of oil wells and corresponding water well data, analyzing oil-water connectivity, analyzing the viscosity, sand content, corrosiveness, wax deposition, gas content, and water content of the reservoir; selecting an appropriate vibrator according to the analysis results of the reservoir; selecting a suitable oil pipe according to the fluid analysis characteristics; designing the spacing between two or more pumping aids according to the pump depth and fluid characteristics; constructing according to the design results, first lowering the pipe string, and then testing the pressure of the pipe string. After the pressure test is qualified, lower the sucker rod to connect the liquid lifting pump, and conduct normal production after the test pumping and holding pressure is qualified. According to the reservoir characteristics, optimizing the application of matching vibrators can improve the seepage capacity of the reservoir and play a role in rapid oil production; optimizing the distribution of the pumping aid device according to the fluid characteristics.