242 results about "Ability testing" patented technology

The invention relates to a method for testing flow conductivity of self-supported cracks in riverfrac treatment. The method comprises the steps of: manufacturing a core test piece which satisfy closed state of the crack wall surface after pressure relief return of riverfrac treatment, drilling a phi 50*100 mm cylindrical test piece, enabling the cylindrical test piece to be orthogonal with a pre-formed scratch, splitting the pre-formed scratch to manufacture a tensile fracture type crack wall surface, dislocating the crack wall surface, smoothly grinding the end surface of the core test pieceto obtain a non-proppant non-engaged crack wall surface combination; then testing the flow conductivity of the crack, putting the manufactured core test piece into a core clamping system, simulating formation stress and temperature, setting and sending a control instruction, enabling each system to work and feed back signals, and finally, collecting the test results and calculating the flow conductivity of self-supported crack in the riverfrac treatment. The method in the invention can really reflect the tensile fracture and shear slip process of the riverfrac treatment, and reduce the process to a pressure and temperature environment under the ground to test the flow conductivity; and the test method is achievable.

The invention discloses an apparatus and a method for testing cementation capability of well cementation first and second interfaces under high-temperature high-pressure conditions. The apparatus is mainly composed of a kettle body, an outer pressure pump, an inner pressure pump, a heating belt, a surrounding pressure sleeve, an inner pressure pipe, a nitrogen source, a rotor flow meter, an observation conical flask, an outer pressure sensor, an outer galvanic couple, an inner pressure sensor, an inner galvanic couple, a gas-liquid discharge valve and a computer. The method comprises: (1) sleeving an imitated rock core with the surrounding pressure sleeve, putting in the kettle body and pouring a drilling fluid; (2) heating the kettle body, injecting a pressure P1 into the drilling fluid, and maintaining for 3 d to form an artificial mud cake; (3) pouring a cement slurry into an annular space formed by the inner pressure pipe and the imitated rock core, setting the temperature as a downhole temperature T1, pressurizing to a surrounding pressure P2 needed by an experiment, and maintaining for 3 d to form a cement sheath; and (4) pressurizing the interior of the inner pressure pipe to a pressure P3 needed by the experiment, and testing the cementation capability of the first and the second interfaces. The principle is reliable, the apparatus and the method are capable of accurately testing the cementation capability of the well cementation first and second interfaces under the high-temperature high-pressure conditions, and the evaluation result is relatively precise.

The invention relates to a direct-current charging pile detection system comprising a direct-current simulator, a simulation charging process testing load, a charging pile on-load capacity testing load, a simulated power source, an oscillograph and a signal gating device. The direct-current simulator consists of an analog-digital converter, a digital circuit processing module and a detection system interface matching a tested direct-current charging pile interface. According to the invention, the input and output current and voltage signals can be detected and analyzed; and the charge controlcompatibility detection of the charging pile body and charging communication compatibility detection can be realized. The control compatibility tests include a pile body control guidance parameter test, a normal charging process test, and a simulated storage battery fault test; and the communication compatibility test includes communication testing of a direct-current charging pile handshake stage, a configuration stage, a charging stage, and an ending stage. The direct-current charging pile performance indexes can be detected comprehensively and thus the direct-current charging pile can workreliably.

The invention provides a shale gas reservoir complex fracture conductivity simulation experiment method. The method comprises the following steps that (a) a stratum shale core or a peer position shale outcrop for manufacturing a test piece is selected, and shale materials are processed into a shale slab, wherein the length of the shale slab is 17.7 cm, the thickness of the shale slab is 1.5 cm, the width of the shale slab is 3.8 cm, and the two ends of the shale slab are in a semicircular shape; (b) the shale slab is further processed to meet the requirement of turning fractures or branch fractures; (c) the processed shale slab is put in a conducting room for testing the fracture conductivity, and a propping agent with the certain sanding concentration is laid in the middle of the shale slab; (d) the conducting room with the propping agent and the shale slab well arranged is put in a fracture conductivity testing device to conduct a conductivity experiment test. For fractured fragile shale with complex fractures, the shale gas reservoir complex fracture conductivity simulation experiment method can be used for studying the conductivity of the turning fractures and the branch fractures formed through fracturing of shale gas reservoirs and evaluating the influence on the fracture conductivity by the fracture steering degree and the branch fracture form.

The invention relates to a self-support fracture testing and analyzing device and method for oil-gas field development. The device is mainly composed of a fluid storage tank, an advection pump, a pretreated working fluid tank, a reverse mold fluid tank, a flow conduction chamber, a displacement sensor, a hydraulic press, a fracture maker, a back-pressure controller, a collected fluid bottle, a data acquisition and control board and a computer. The method comprises the following steps: naturally breaking a rock core into two rock plates; putting the rock plates into the inner cavity of the flow conduction chamber to form a self-support in-fracture fluid flow region; applying an initial pressure so that the in-fracture fluid flow region is fully filled with the testing fluid; pretreating the in-fracture fluid flow region; starting the computer, inputting experimental parameters, and injecting the testing fluid; acquiring self-support fracture flow conductivity; treating the in-fracture fluid flow region again; and driving the reverse mold fluid into the flow conduction chamber to form a reverse mold casting. The invention can simulate the actual situation of the self-support fracture to acquire accurate flow conductivity test data, and can also acquire the flow form of the self-support in-fracture fluid.

The invention discloses a rock fracture simulation sample and a preparation method thereof, as well as a simulation test device and a simulation test method and belongs to the technical field of rock simulation tests. The simulation sample comprises a body and a fracturing fluid injection pipe, wherein a blind hole is formed by taking one end surface of the body as a start point; the fracturing fluid injection pipe is fixedly connected with the wall of the blind hole; an accommodating space is reserved between the bottommost end of the fracturing fluid injection pipe and the bottommost end of the blind hole. The simulation sample can be prepared by the preparation method. The simulation test device comprises a triaxial test apparatus, wherein the triaxial test apparatus comprises a triaxial chamber, an upper pressing head, a lower pressing head, a confining pressure oil injection mechanism, a fracturing liquid injection pump and the rock fracture simulation sample. The simulation test method is realized on the basis of the simulation test device. According to the simulation test method, vivid complex fracture seams can be formed in a rock sample, and a fracture conductivity test is performed on the basis of the fracture seams, so that the obtained rock gas pool deliverability evaluation is relatively approximate to actual evaluation data, so as to guide actual work more objectively.

This invention relates to a new type of experiment apparatus in pile-soil operation chamber, which is to mock up and test the interaction of pile-soil under multiple conditions in the chamber. It comprises upper cap-mud pressure load apparatus, barrel and balance load system, wherein, several set wires go through the side wall, bottom of barrel and pressure load cap to exert double pressure on the imbedded model peg, meanwhile to measure the pile-soil interaction under the alternating load. This invention can be applied to study the foundation bearing principle and to test various bearing abilities.

The invention discloses a ball screw assembly precision retaining ability testing device. A motor and a gearbox are arranged on a head frame supporting plate. An output shaft of the gearbox is connected with a dynamic torque sensor. The dynamic torque sensor is connected with the tested ball screw assembly through a coupling. A circular magnetic grid is arranged on the coupling. The circular magnetic grid is connected with the tested ball screw assembly. The head portion and tail portion of the tested ball screw assembly are fixed in a supporting mode through a head frame and a tail frame. An eddy current brake is connected with the gearbox and is connected with a load component. The load component comprises two duplex pulley blocks, two duplex coiling blocks and three gears. Steel wire ropes on the coiling blocks transmit damping to the nut of the tested ball screw assembly through a nut supporting board. The supporting board is fixedly connected with the matched nut of the screw assembly. Four sliding blocks are arranged on the lower sides of the two sides of the supporting board and enable the supporting board to slide on a guild rail fixed on a bed body. A tail frame supporting board is arranged on a flat-V guide rail of the tail portion of the bed body. In work, the eddy current brake provides load, through adjusting the current value passing through eddy current brake, simulation of the ball screw assembly working condition can be achieved.

The invention relates to a system for testing sand carrying capacity of fracturing fluid. The system is characterized in that firstly a first gas cylinder and a second gas cylinder are respectively connected with the inlet of a gas purifier through a first valve and a second valve, the outlet of the gas purifier is sequentially connected with a volumetric flowmeter, a refrigeration system and a liquid CO2 storage tank, a third valve is connected between the refrigeration system and the liquid CO2 storage tank, the outlet of the liquid CO2 storage tank is connected with a fourth valve, a first pressure gauge, a fifth valve and a CO2 pump and then converges with a branch connected with a reagent tank and a reagent pump, a safety valve is connected at a junction between two branches, then a one-way valve, a preheater, a first thermometer and a second thermometer are sequentially connected, and then a horizontal sand carrying transport branch is entered to test the transport performance of the fracturing fluid or a vertical sand suspending transport branch is entered to test the sand suspending performance of the fracturing fluid. The invention further discloses a corresponding testing method, which is specially used for simulating and testing the sand carrying capacity of carbon dioxide anhydrous fracturing fluid at different additive proportions under different situations of temperature, pressure and displacement.

The invention discloses a crack flow conductivity test method. The crack flow conductivity test method comprises the steps that firstly, a crack width combination under a crack network system is calculated according to characteristics of a reservoir stratum; secondly, a diversion trench model is manufactured according to a crack type and the crack width combination; thirdly, a flow conductivity test experiment is conducted by utilizing the diversion trench model, and therefore the crack flow conductivity is obtained through tests based on a flow conductivity evaluation method. The crack flow conductivity test method is reliable in principle, enables the crack width combination, a crack corner support and a complex crack network steel plate model to be manufactured simply, can really reflect the flow conductivity of different crack widths, the crack corner support and a complex crack network and the matching relation of the flow conductivity of the different crack widths, and provides a basis for reservoir numerical simulation data optimization.

The invention discloses an evaluation method of the carbonatite reservoir volume acid fracturing flow guiding capacity and belongs to the technical field of exploration and development of oil and gas.An artificial joint forming device is adopted to conduct joint cutting and transverse slipping on a carbonatite rock board, and an upper rock board body and a lower rock board body with cracks are obtained; a first flow guiding capacity test is conducted, and the value of the first flow guiding capacity is obtained; acid liquid is injected between the upper rock board body and the lower rock board body, a second flow guiding capacity test is conducted, and the value of the second flow guiding capacity is obtained; the values of the first flow guiding capacity and the second flow guiding capacity are compared, and thus the increased degree of the flow guiding capacity after acid injection can be known; the crack forming mode of the test rock board accords with the actual stratum situationbetter, and thus the evaluation method of the carbonatite reservoir volume acid fracturing flow guiding capacity can provide scientific guidance for actual carbonatite reservoir volume acid fracturingconstruction parameter optimization, acid liquid system preferable selection and process optimization; and meanwhile the evaluation method is easy to operate, high in guidance and wide in applicationrange.

The invention discloses an acid corrosion crack etching morphology and flow conductivity testing method and belongs to the technical field of oil and gas field well exploitation engineering. The method specifically comprises the following steps: preparing a cuboid rock core sample, and splitting the cuboid rock core sample into two rock plates in a length direction of the cuboid rock core sample;respectively performing three-dimensional laser scanning for initial morphology of the two rock plates, and acquiring initial elevation values of different points of crack surfaces of the two rock plates; performing acid liquid expelling and flow conductivity testing on the complete rock core sample comprising the two rock plates; performing three-dimensional laser scanning on the morphology of the two rock plates after acid liquid expelling, and acquiring elevation values of different points on the crack surfaces of the two rock plates after acid liquid expelling; calculating an initial crackwidth of the rock core sample and a crack width after acid liquid expelling, and respective acid liquid dissolution amounts of the two rock plates. By adopting the method, quantitative representationof acid corrosion crack etching morphology and flow conductivity can be achieved, and the actual acid pressure construction process can be simulated.

The invention relates to a rail vehicle curve passage capacity testing method which includes the following steps that (A) trains to be tested are placed on test platforms; (B) according to test requirements, weight balancing equipment with the corresponding weight is arranged in the trains so that bodies of the trains can meet a needed state requirement; (C) whether the two trains to be tested interfere with each other is detected in an initial state; (D) multiple vertical excitation devices and transverse excitation devices are controlled to move a certain distance in the vertical direction and the transverse direction by testing needed track line conditions, so that center lines of the four test platforms are not in the forwarding direction of the trains, and a curve and a superelevation of an actual line are simulated; (E) according to displacement values obtained through testing, a curve radius is obtained through conversion, whether the two trains to be tested interfere with each other in the monitoring process is detected, meanwhile, wheel rail transverse force Y and wheel rail vertical force Q of each wheel are recorded, and accordingly the curve passage capacity of the trains is analyzed. The method can simulate different line curve situations according to actual situations, is low in cost, high in efficiency, and capable of testing on different track situations and in different vehicle states.

The invention discloses a traveling obstacle avoidance capacity testing device. When a person walks on a pressure detection step pad, a photoelectric virtual obstacle generation device is arranged on the pressure detection step pad; a pressure scanning matrix device in the pressure detection step pad is connected with a control device through a signal acqusition device; the photoelectric virtual obstacle generation device is connected with the control device; a computer is connected with the control device through a communication device; the pressure detection step pad is formed by pressing and fixing a hard base pad, a pressure scanning matrix device and a buffer soft pad; the photoelectric virtual obstacle generation device comprises a plurality of LED (Light Emitting Diode) light strips which are uniformly spaced from one another in parallel; each LED light strip consists of LED lamps which are uniformly spaced from one another along a straight line; the direction of the LED light strips is perpendicular to the walking direction. The device is rational in design; compared with the existing method, the device has the advantages that a state the same as normal walking can be established, a gait parameter is directly measured, the device is safe and reliable, the risk of falling of a tested person is avoided, and the device can be used for testing risks such as falling of old people and the like.

The invention discloses an experimental device for testing the current-carrying capacity of a high-temperature superconducting tape or coil under multi-field coupling. The device comprises a loading system module, a low-temperature system module, a magnetic field system module and a measurement system module. The loading system module, the low-temperature system module and the magnetic field system module are used for comprehensively simulating the actual application environment of a superconducting wire. The measurement system module is used for measuring characteristic parameters of a superconducting wire or coil in states of temperature zone disturbance, magnetic field disturbance, and stress strain on the superconducting wire or coil. In addition, the invention also discloses a methodcomprising the following steps: acquiring a high-vacuum environment and a low-temperature environment and controlling a loading system to carry out stress loading on the high-temperature superconducting tape or the coil or controlling a magnetic field system to carry out magnetic field loading on the high-temperature superconducting tape or the coil; and controlling a constant current source to carry out current loading on the superconducting tape or the coil and recording the change of a nanovoltmeter. Therefore, a multi-field coupling test problem of the high-temperature superconducting tapetest is solved; and the domestic blank is filled.

The invention relates to a flow diversion chamber capable of testing the flow diversion capacity of a fracture network of a tight reservoir by gas. The flow diversion chamber can be blended with an API (American Petroleum Institute) flow diversion capacity tester, so that the cost is reduced; rocks such as an actual formation shale or tight sandstone are used for realistically simulating the formation lithology, the damage to the flow diversion capacity by the embedment of a propping agent is considered, and the fracture width and the fracture network structure are changeable; the flow type of the flow diversion chamber is radial flow but not linear flow, whether a test medium passes through all fractures in the fracture network or not cannot be ensured by the linear flow, the spread range of the test medium can be increased by the radial flow, and the accuracy of testing the flow diversion capacity can be increased.

The invention provides a device for testing an ink box chip of a printer, which comprises a printer control module, a chip signal transfer module, a USB (Universal Serial Bus) control module and a man-machine interaction interface, wherein the chip signal transfer module is connected with the printer control module; the chip signal transfer module is provided with a test terminal for being connected with the chip; the USB control module is connected with the printer control module; and the man-machine interaction interface is connected with the USB control module. By the USB control module, the whole testing process is controlled to be carried out in one step. Signal generating capability and signal measuring capability of the printer are adopted, so that the testing result accuracy is high. The accuracy and the operating efficiency of testing the chip are improved. The device for testing the ink box chip of the printer is reliable to use.

The invention provides a low-voltage ride through detection system of a wind generating set. The low-voltage ride through detection system comprises a power grid simulation device, a dummy load, a voltage sag control unit and a detection unit; the power grid simulation device is used for simulating voltage of a power grid; the dummy load is used for simulating a load of the power grid; the power grid simulation device and the tested wind generating set supply electricity to the dummy load together; the voltage sag control unit is connected between the power grid simulation device and the tested wind generating set for making the output voltage of the power grid simulation device undergo voltage sag; and the detection unit is respectively connected with the power grid simulation device and the tested wind generating set for detecting the low-voltage ride through performance of the tested wind generating set. The invention further provides a low-voltage ride through detection method of the wind generating set. According to the low-voltage ride through detection system of the wind generating set and the low-voltage ride through detection method of the wind generating set provided by the invention, the low-voltage ride through capability of a fan can be tested under the precondition that the power grid is not utilized.

The invention discloses a method for determining the flow conductivity of a hydraulically-created prop fracture of a tight sand reservoir by an experiment. The method comprises the following steps that an exposed rock sample of the reservoir is acquired, engraved rock samples with the real morphology of the surface of the hydraulically-created fracture are manufactured in batches through a fracture surface reconstruction technique, the sanding concentrations of different positions of the prop fracture are determined according to field construction parameters, and the flow conductivity of the prop fracture is tested after a propping agent with the corresponding concentration is laid on the engraved rock samples. According to the method, the seepage form of the underground prop fracture formed after hydraulic fracturing of the tight sand reservoir is truly simulated, the flow conductivity and distribution condition of the prop fracture are accurately evaluated, and a basis is provided for optimizing fracturing construction parameters.