949results about How to "Reliable principle" 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 provides a fracturing method for supplementing stratum energy of dense oil reservoir. The method includes the steps that in combination with characteristics of the dense oil reservoir, characteristics of non-darcy seepage are considered, and CMG oil reservoir value simulation software is utilized to simulate and calculate a discharge area controlled by a single fracture under the modes of subdivision cutting and a complex fracture net with the starting pressure gradient considered; in combination with a fracture spacing chemical interference theory, the horizontal well improvement segment spacing improved by dense oil reservoir size fracturing, cluster spacing and perforating parameters are optimized; the dense oil reservoir transformation parameter is determined through a non-darcy seepage equation and the CMG oil reservoir value simulation software; the ram material composition of fracturing liquid is determined according to the wettability and sensitivity of the reservoir; the fracturing liquid and a propping agent are poured, the flow velocity of the eyelet of a single liquid suction and injection hole of the fracturing liquid is 0.25 m<3>/min-0.4 m<3>/min, and the pouring intensity is 10 m<3>/min-15 m<3>/min; the well closing time is determined through the CMG oil reservoir value simulation software, a well is closed according to the determined well closing time, and the fracturing method integrates pressing, pouring, driving and exploiting.

The invention relates to a device and a method for measuring the embedding depth of a proppant used for compression fracture in the process of oil-gas field development, wherein the device comprises a smooth flow pump, a liquid storage tank, a flat plate clamper, a hydraulic machine, a data acquisition board, a computer, and the like. The method comprises the following steps: spreading the proppant between two steel plates which are loaded in a cavity of the flat plate clamper, and placing the flat plate clamper on a platform of the hydraulic machine; starting the computer and inputting experimental parameters; pumping the liquid in the liquid storage tank into a state for simulating stratum fluid in the clamper by the smooth flow pump, simulating the temperature and the pressure of a stratum by an electric heating stick and the hydraulic machine, displaying crack changes by a displacement sensor, and transmitting all data to the computer by the data acquisition board; replacing the steel plates by rock cores, and repeating the steps; and processing and calculating the data by the computer to obtain the embedding depth of the proppant under different environmental conditions. The device has a reliable principle and a simple structure, and the method is practical, thereby providing a special device and an evaluation method for evaluating the depth of the proppant embedded into rocks in the fracturing process in an oil-gas field.

The invention provides a novel adsorption and desorption experiment device and a novel adsorption and desorption experiment method. The device mainly consists of a reference cylinder, a sample cylinder, a confining pressure pump, a booster pump, an air compressor, an intermediate container, a constant temperature system, a pressure sensor and a computer, wherein the sample cylinder mainly consists of a sample chamber, a confining pressure chamber, a left adjustable plug, a right adjustable plug, a barrel, a sealing ring, a screen mesh and a leather sheath; the confining pressure chamber is defined by the barrel and the leather sheath; the sample chamber is defined by the leather sheath and the adjustable plugs; the sample chamber is connected with the reference cylinder; the reference cylinder, the sample cylinder and the pressure sensor are arranged in the constant temperature system; the confining pressure chamber is connected with the confining pressure pump, and the confining pressure pump is used for increasing the confining pressure of the confining pressure chamber, so that the real stratum conditions can be simulated; the sample cylinder is provided with the two adjustable plugs, one adjustable plug is provided with the screen mesh on the top, and the other adjustable plug is not provided with the screen mesh, so that two rock samples including standard rock samples (having length of 5cm and diameter of 2.5cm) or rock sample powder (with 60-80 meshes) can be arranged in the sample cylinder. The device and the method have the advantages that the principle is reliable, and the device is simple in structure and simple and safe to operate; the real stratum environment can be simulated, and temperature and pressure conditions of different reservoir stratums as well as the methane adsorption and desorption law of the rock samples can be determined, so that reasonable experimental data can be provided for shale gas occurrence form research and reserve calculation.

The invention discloses a determination device and method of constraint irreducible water saturation in a reservoir rock core. The device mainly comprises a high-pressure nitrogen source, a humidifier, a rock core holding device, an oil-water displacement pump, a loop pressure pump, a return pressure control pump, a gas metering instrument and a liquid metering instrument, wherein the rock core clamping device is arranged in a constant-temperature box; the high-pressure nitrogen source is connected with the inlet end of the rock core clamping device through the humidifier; the oil-water displacement pump is also connected with the inlet end of the rock core clamping device through an oil-water displacement control valve; the loop pressure pump is connectd with the rock core clamping device through a loop pressure control valve, and applies confining pressure to the rock core; and the outlet end of the rock core clamping device is connected with the return pressure control pump, and is also connected with the gas metering instrument and the liquid metering instrument respectively. The device is reliable in principle, is reasonable in structure, and is simple and convenient to operate, is utilized for determining the constraint irreducible water saturation in the reservoir rock core, can achieve the highest pressure of 70Mpa and the highest temperature of 150 DEG C, and remedies the defects of an existing gas reservoir log analysis and gas well production dynamic analysis method as well as the technique application.

A well cementation flushing liquid system suitable for an oil-based drilling fluid and a preparation method thereof. The invention mainly solves the defects of low flushing efficiency, poor wetting conversion capability and poor interface cementing quality in the flushing liquids in the prior art. The flushing liquid system comprises the following components, by weight: 100 parts of clear water, 0.8-1.2 parts of an anionic surfactant, 0.6-0.8 parts of a nonionic surfactant, 0.7-1.0 part of a cosurfactant, 6.0-10.0 parts of an oil phase, 8.0-12.0 parts of a salt water phase, 0.15-5.0 parts of a polymer, 0.0-150 parts of a weighting agent and 1.0-2.5 parts of salt. The flushing liquid system is adjustable in density within 1.01-1.90 g/cm<3> and is 20-130 DEG C in available temperature range. The flushing liquid system can quickly remove residual oil-based drilling fluid, is strong in wetting conversion capability, ensures cementation between cement rings and an annular space, and is wide in application prospect.

The invention discloses a flexible stretchable multi-mode sensor based on a nanofiber core spun yarn and a preparation method thereof. The flexible stretchable multi-mode sensor comprises an elastic conductive core yarn and a carbon nano tube/polymer compounded nanofiber, wherein the surface of the elastic conductive core yarn is coated with the carbon nano tube/polymer compounded nanofiber through an electrospinning technique to prepare a continuous nanofiber core spun yarn, the nanofiber core spun yarn is woven into a fabric according to a weaving principle, and the flexible stretchable multi-mode sensor based on the nanofiber core spun yarn is obtained by utilizing a flexible polymer packaging mode for the fabric; the elastic conductive core yarn is prepared by coating a carbon nano tube/polymer conductive solution to the surface of the elastic conductive core. By adopting the weaving mode and the like, an intelligent sensing unit weaves the fabric, then a novel intelligent wearableclothing is assembled, and development of a flexible intelligent wearable product is effectively promoted.

The invention discloses a method for preparing a calcium sulfate whisker through recrystallization. The method is characterized in that the method comprises the steps of (1), conducting program control on heating and dissolution courses: putting a raw material with a main ingredient of calcium sulfate into a sulphuric acid solution for stirring, heating simultaneously, heating a mixture to 60-95 DEG C at a certain rate with the adoption of the program control, dissolving for 20min-1h, (2), conducting the program control on cooling and recrystallization courses: using the program control to cool a suspension obtained by dissolution to 10-30 DEG C, ageing for 20min-2h, (3), conducting separating and washing courses: conducting solid-liquid separation on the suspension, washing a separated solid-phase product, and (4), conducting a drying course: drying the washed solid-phase product at a certain temperature, and obtaining the calcium sulphate dihydrate whisker. The calcium sulfate whisker is prepared by utilizing a recrystallization principle under an ordinary-pressure mild condition, and a relatively economical technological approach can be provided for the resource utilization of industrial by-products such as desulfurization gypsum and phosphogypsum.

The invention discloses a method for determining retrograde condensation oil saturability in a depletion development sandstone condensate gas reservoir reservoir. The method comprises the following steps: 1, obtaining a core of the actual reservoir, and cleaning and drying the core; 2, testing the gas phase effective permeability Kegi under different oil saturation Soi conditions, and determining the values of the parameter a and the pameter b in the formula Soi=aln (kegi) +b; 3, preparing formation fluid samples; 4, restoring the core to the original reservoir state; 5, lowering the pore pressure in the core, and recording the core inlet end pressure, the outlet end pressure and the core outlet end output air volume; 6, calculating the gas phase effective permeability Kfegi under the mean pressure condition in the core depletion process; 7, calculating the retrograde condensation oil saturability Soi in the sandstone condensate gas reservoir under different pressure conditions. The method is reliable in principle, simple and applicable, influence of porous media, water saturation and condensate oil flowing is taken into consideration comprehensively, and wide market prospect is achieved.

The digestive tract remote measuring capsule electromagnetically positioning system includes sealed capsule with three-axis magnetic field sensor, signal processing module and radio communication module; three extracorporeal ring static magnetic field exciting coils; and extracorporeal data record instrument comprising monochip computerized control circuit, constant-current source circuit, multiplex switch, radio communication module, memory and power source module. During system operation, the three coils are fixed onto the surface of body to produce magnetic field under the excitation of the current from the instrument successively, the intracorporeal capsule detects the magnetic fields and produces and emits digital signal, and the instrument receives, saves and processes the signal, so as to obtain the 3D locus of the capsule.

The invention belongs to the technical field of water floating object collecting devices, and relates to an automatic water floating object collecting device. The main body structure of the automatic water floating object collecting device comprises a boat body, a bilateral wheel adjustable horn-shaped inlet section, a floating object inlet automatic door system, a ship power equipment operation system and a floating object outlet gate system. The bilateral wheel adjustable horn-shaped inlet section is arranged at the head end of the boat body, the floating object inlet automatic door system is arranged between the boat body and the bilateral wheel adjustable horn-shaped inlet section, the ship power equipment operation system is arranged in the middle section of the boat body, and the floating object outlet gate system is arranged on the tail portion of the boat body. The automatic water floating object collecting device is simple in structure, reliable in principle, high in operation reliability, simple and convenient to manage and maintain and low in cost, and does not need a machine driven system for collecting rubbish.

The invention relates to a high-temperature in situ tension-fatigue test system and a test method thereof, and belongs to the technical field of scientific instruments and material test. The test system comprises a tensile loading and detecting unit, a fatigue loading and detecting unit, an in situ observation unit, and a high temperature loading and detecting unit. The tensile loading and detecting unit is powered by a motor, and realizes quasi-static loading through worms, gears and a ball screw; a piezoelectric ceramic drives a flexible hinge to realize medium and low frequency reciprocating motion in the tensile axial direction of a test piece in order to realize fatigue loading; and an optical microscope dynamically monitors the test process in order to realize in situ observation. The test system has the advantages of reliable principle, important scientific meaning, good application values, and accurate test and analysis of the relationship among mechanical performances of a test piece material, the microstructure of the material and the deformation damage mechanism in high temperature environment.

The invention discloses a method for evaluating self-repairing performance of a well cementation cement sheath. The method sequentially comprises the following steps: (1) preparing self-repairing cement paste for well cementation, pouring the self-repairing cement paste into a bending-resistant and splitting tensile mold, and maintaining for a certain time in a high-temperature high-pressure maintenance kettle, so that the cement paste is solidified into set cement; (2) testing the bending strength and tensile splitting strength of the set cement which is completely broken; (3) maintaining the tested broken set cement in a maintenance device for 24 hours, and measuring the bending strength and tensile splitting strength of the set cement again; (4) calculating a bending strength repair rate and a tensile splitting strength repair rate of the set cement; and (5) repeating the steps (2) to (4), and solving an average value of the repair rates, wherein the set cement is considered to have the self-repairing performance when the average bending strength repair rate is more than or equal to 50 percent and the average tensile splitting strength repair rate is more than or equal to 30 percent. The method has the advantages that the principle is reliable, a calculation method is simple, the repair rates of the set cement can be accurately tested, and the method is suitable for evaluating the self-repairing performance of various types of well cementation set cement.

The invention belongs to the technical field of research and application of civil engineering materials and relates to a method for determining the fineness modulus of sand by utilizing an image analysis technology. The method comprises the eleven specific steps: sampling, photographing, preprocessing images, calibrating a scale, separating sand grains from the background, dividing the adhered sand grains, treating the sand grains on the image boundary, treating the sand grains with holes, determining the minimum Ferrette diameter, carrying out grain-diameter filtering on the sand grains and calculating the fineness modulus of the sand. The method has the advantages that the image analysis method is adopted for calculating the fineness modulus of the sand for the first time, and the criterion that the volume ratio and the weight ratio is equal is applied, so that the weighing process of the sand is avoided; the minimum Ferrette diameter is adopted as the equivalent grain diameter of the sand which can be sieved, so that the accuracy of determined data is better guaranteed; and the method is novel in design, reliable in principle, simple in operation, scientific in calculation, accurate in data, low in cost and high in automation degree.

The invention provides a device for removing dust and solder splash from an electricity meter. The device comprises a first box and a second box which is fixedly connected with the bottom surface of the first box, wherein the upper surface of the first box is provided with a limiting part which is used for placing the electricity meter and a detection part; the first box is internally provided with a dust removing pneumatic gun and a vibration knocking part; and the second box is internally provided with a first timer, a second timer, a first relay, a second relay, a first solenoid valve, a second solenoid valve, an adjustable-speed motor, a suction ventilator and a dust collection bag. The detection part detects the to-be-treated electricity meter, and after a preset period of time, the adjustable-speed motor operates to realize knocking on the to-be-treated electricity meter; and the detection part detects the to-be-treated electricity meter, and after a preset period of time, dedusting on the to-be-treated electricity meter by the dust removing pneumatic gun and dust collection by the suction ventilator are realized. By adopting the device disclosed by the invention, the problems in manually knocking the shell and manually removing the dust with the pneumatic gun that the standard degree is low and the efficiency is low are solved; and the device is simple in structure, simple and convenient to operate, high in automation degree and good in dust and solder splash removing effect.

The invention belongs to the regulation and control technical field of electrical property of a transistor, and relates to a regulation and control method for electrical property of an indium oxide nanofiber field effect transistor. In<2>O<3> nanofibers are prepared through a simple, convenient and low-cost electrospinning technology; the electrical property of the In<2>O<3> nanofiber field effect transistor is regulated and controlled through simple and feasible metal doping so as to regulate and control the electrical property, such as a threshold voltage, an off-state current, a switching ratio and the like, of the In<2>O<3> nanofiber field effect transistor in a simple and convenient, efficient and low-cost manner, in order to obtain the excellent-performance and metal-doped In<2>O<3> nanofiber field effect transistor; the preparation process is simple, convenient, and safe, and the principle is reliable, and the production cost is low; and the prepared In<2>O<3> nanofibers and the metal-doped In<2>O<3> nanofibers have wide application prospect in the fields of an electronic switching device, a display, biological and chemical sensors and the like, and large-scale industrial production can be performed easily.

The invention relates to a USB data transmission device in a high-speed data communication link and a method thereof. The device comprises a USB control functional module connected with a host machine and a central control module, wherein the central control module comprises a DMA controlling unit and an ARM controlling unit connected with the DMA controlling unit, and the DMA controlling unit and the ARM controlling unit are respectively connected with the USB control functional module. The method comprises the following steps: data receiving processing operation and data transmitting processing operation. The USB data transmission device in the high-speed data communication link and the data transmission method thereof completes the data transmission by skillfully adopting the way that a hardware signal directly triggers the DMA, reduce the interruption to the CPU to the utmost extent, obviously lower the load of the CPU, and improve the efficiency and the reliability of the system. meanwhile, the principle is simple and practical, the operating process of the system is stable and reliable, the application range is broader, and especially in the high-speed data communication, the data transmission speed can reach 100 Mbps, which can meet the requirements of application of majority of communication data links.

The invention discloses an experimental test method of mixed gas flooding storage capacity under high temperature and high pressure. The experimental test method comprises the following steps: (1) preparing a crude oil fluid sample; (2) testing the single degassing oil ratio GORO; (3) testing injected gas composition and volume coefficients; (4) obtaining a reservoir plunger rock core sample in anactual gas reservoir; (5) putting a combined long rock core in a rock core clamper; (6) testing through connecting an experimental device, injecting a water sample in a formation water intermediate container into the rock core till formation water visiblely flows out of a separator; (7) injecting an oil sample in a formation oil sample intermediate container into the rock core till the water sample in the separator is not increased; (8) injecting a gas ample in an injected gas intermediate container into the rock core till no oil is produced at the outlet end of the rock core; (9) calculatingthe storage capacity of injected gas according to the GORi at different moments in the gas flooding process and the GOR0 of the prepared crude oil sample. The experimental test method disclosed by the invention is reliable in principle, simple and convenient to operate, strong in applicability and capable of determining the storage capacity and the distribution characteristics of each of injectedgas components in the rock core.

The invention belongs to the technical field of metal material surface processing and relates to a production method for a ship fastener complex coating. A zinc impregnation coating, a zinc-aluminum coating and an epoxy coating are arranged on the fastener surface from internal to external and zinc impregnation, washing, zinc-aluminum coating liquid dip-coating, zinc-aluminum coating solidification, epoxy coating liquid dip-coating and epoxy coating solidification are performed on the faster after sequentially being performed on oil removing and rust removing to form into a protective layer. The production method for the ship fastener complex coating has the advantages of being simple in production technology and reasonable in principle. The complex coating has the advantages of being good in corrosion resistance, being capable of effectively solving the problem that the faster is corroded in the seawater environment and being environmentally friendly.

The invention belongs to the technical field of automatic medical systems, in particular to a supervision and administration system of doctor advice execution. The system comprises two parts including a supervision platform and a supervision terminal, wherein the supervision platform is formed by the electrical information communication of a server and a memory; the server can classify original doctor advices into four types of doctor advice records after the server receives the original doctor advices, independently and correspondingly forms four corresponding types of prompt information, generates integrated prompt information after the four types of prompt information subjected to integration processing are combined with clock information, and sends the integrated prompt information to terminal equipment to be displayed; the memory is used for storing doctor advice information, four types of doctor advice records, four types of prompt information, the clock information, the integrated prompt information and execution information typed through the terminal equipment by the user, wherein the doctor advice information, the four types of doctor advice records, the four types of prompt information, the clock information and the integrated prompt information are formed in the server; and the terminal equipment can realize the retrieval query of the doctor advice information, the doctor advice record, the prompt information and the execution information and also can type in the execution information about a doctor advice execution situation so as to realize interactive supervision and administration. The system has the advantages of being scientific in design, reliable in principle, convenient in use and powerful in function.

The invention belongs to the technical field of rail traffic vehicle and high-voltage electrical equipment on-line insulation monitoring and especially relates to a multiple-unit train high-voltage equipment insulation state on-line monitoring system, which is used for realizing on-line monitoring of the insulation state of 25 kV high-voltage equipment of a multiple-unit train. Through classification of multiple-unit train high-voltage equipment, characteristic quantity screening, wireless transmission, high-voltage induction power obtaining, expert database and fuzzy function operation, the difficulty that a conventional power system on-line insulation monitoring mode cannot be applied to the multiple-unit train, which is characterized by high-speed movement, single-phase power supply, non-single-point grounding, harsh environment and strict requirements and the like, is solved; and the system comprises a data acquisition unit and an analysis and diagnosis unit. The data acquisition unit is used for extracting characteristic quantity of a monitoring object, and transmitting the data in a wireless manner to the data analysis and diagnosis unit for analysis and diagnosis and signal output. The system is reliable in principle, high in precision, high in accuracy, high in safety and good in reliability, is of great significance to promotion of continuous development of the high-speed rail cause, and has good economic benefits and a broad market prospect.