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62 results about "Stress recovery" patented technology

Well testing interpretation model for analyzing fracture-cave series mode double-hole composite reservoir

The invention relates to a well testing interpretation model for analyzing a fracture-cave series mode double-hole composite reservoir, which comprises the following steps of: 1, establishing a corresponding physical model according to reservoir characteristics of a certain type of oil reservoir; 2, establishing a mathematical model, wherein the mathematical model is used for describing a physicalmodel; 3, solving the mathematical model to obtain a real space bottom hole pressure solution; and 4, drawing a real space well testing theoretical curve by utilizing a real space well bottom pressure solution, analyzing the well testing theoretical curve, performing curve fitting on theoretical pressure data and actually measured pressure recovery data to obtain a fitting result, and obtaining interpretation parameters which comprise fracture conductivity, fracture length, karst cave volume and karst cave storage capacity ratio. By solving the well testing mathematical model of the fracture-cavity series mode, the well bottom pressure solution of the fracture-cavity series mode is obtained, the typical well testing curve is drawn, the stratum parameters are obtained, the well testing interpretation method of the fracture-cavity series mode double-hole composite reservoir is determined, and the fracture-cavity type oil reservoir is accurately evaluated and effectively developed.
Owner:NORTHEAST GASOLINEEUM UNIV

Chinese herbal composite feed additive used for transportation stress recovery of beef cattle

InactiveCN102511687APromote healthy growthReplenish as soon as possibleAnimal feeding stuffFood additiveVitamin C
The invention relates to a Chinese herbal composite feed additive used for transportation stress recovery of beef cattle, and effectively solves the poor digestive function and immunity problems resulted from poor body conditions brought about during transportation of beef cattle. The additive is prepared by the following components by weight percent: 22-28% of medicated leaven, 15-20% of haws, 0.5-1.5% of astragalus polysaccharides, 1-2% of active yeast, 1.5-2% of niacinamide, 0.7-1.2% of vitamin C, 0.25-0.4% of vitamin E, 0.25-0.5% of zinc sulfate, 20-25% of potassium chloride, 10-15% of ammonium chloride, and 10-15% of magnesium oxide. Specifically, each component is first crushed to a particle size below 0.5mm respectively, the niacinamide, the vitamin C, the vitamin E, the astragaluspolysaccharides and the active yeast are mixed uniformly, then the mixture is mixed with the potassium chloride, the ammonium chloride and the magnesium oxide uniformly, and finally the haws and the medicated leaven are added and stirred uniformly, thus obtaining the feed additive. The composite feed additive of the invention has the advantages of scientific prescription, abundant raw materials, and easy production. Application of the feed additive in the feed of beef cattle after transportation stress can promote the beef cattle to supplement electrolytes, trace elements and vitamins as quickly as possible after transportation stress. Thus, the composite feed additive provided in the invention has the effects of improving body conditions, enhancing digestion function and immunity.
Owner:HENAN UNIV OF CHINESE MEDICINE

Multi-bath apparatus and method for cooling superconductors

A multi-bath apparatus and method for cooling a superconductor includes both a cooling bath comprising a first cryogen and a shield bath comprising a second cryogen. The cooling bath surrounds the superconductor, and the shield bath surrounds the cooling bath. The cooling bath is maintained at a first pressure and subcooled, while the shield bath is maintained at a second pressure and saturated. The cooling bath and the shield bath are in a thermal relationship with one another, and the first pressure is greater the second pressure. Preferably, the cryogens are liquid nitrogen, and the superconductor is a high temperature superconductor, such as a current limiter. Following a thermal disruption to the superconductor, the first pressure is restored to the cooling bath and the second pressure is restored to the shield bath in order to restore the superconductor to a superconductive state.
Owner:BOC GRP INC

Super-deep well wireless transmission well testing system

ActiveCN101440705AAvoid the effects of accumulationImprove accuracySurveyMicrocontrollerPressure transmission
The invention discloses a wireless transmission well testing system of an ultra-deep well and relates to the filed of dynamic monitoring of an oil reservoir, in particular to a device for a pressure buildup test for an oil gas production well. The proposal utilizes a ground receiving device, a cable, a supporting cylinder, a sensing system and a ball valve; the supporting cylinder is connected with the upper part of the ball valve; the outer wall of the supporting cylinder is provided with a groove; the inside of a tube is provided with a pressure transmission passage from the lower part of the ball valve to a groove of a direct-reading manometer; the sensing system comprises the direct-reading type manometer, a cell and a receiver; the direct-reading type manometer and the cell are arranged inside the groove of the outer wall of the supporting cylinder respectively; the direct-reading type manometer consists of a sensor, an A / D module, a microcontroller, a signal emitter and a transmitting coil which are sequentially connected; the receiver consists of a receiving coil, a signal receiver, a microcontroller and a signal transmitter which are sequentially connected; and the receiver is arranged inside the supporting cylinder and is connected with the ground receiving device through the cable. The proposal realizes well shutdown underground, avoids accumulation in a well cylinder, shortens the well testing period, can fully avoid causing incomplete underground pressure buildup curve by insufficient time for well shutdown, can set sampling density at any moment through a ground computer, avoids causing the loss of wire section in early stage and meets the testing requirement of well testing of the oil gas well.
Owner:XINJIANG SINOGASOLINEEUM ENG

Intensity check method based on cabin door detail model

The invention relates to an intensity check method based on a cabin door detail model, and belongs to the field of airplane structural intensity design. The intensity check method comprises the steps of establishing a finite element model of the cabinet door firstly, and establishing a complete structure calculation model and a damage safety calculation model of the cabinet door according to the finite element model data; then performing calculation of static force to obtain node balance force calculation, board shell unit equivalent stress calculation, beam unit stress recovery point stress calculation and calculation of axial stress between a beam unit and a rod unit; further calculating to obtain data suitable for intensity check method calculation, comprising stress check operation stress of each structure and stability calculation operation stress of each structure; and meanwhile, calculating a stress check allowable value of each structure and a stability calculation allowable value of each structure, and performing comparison between the two allowable values to obtain safety margin of each structure. By adoption of the method provided by the invention, the intensity check operation based on the cabin door detail model can be completed; and the method is simple and reliable, and working efficiency is improved.
Owner:XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA

Pumps for filtration systems

InactiveUS7244357B2Simplified valve mechanismMinimizes polarization concentrationGeneral water supply conservationSeawater treatmentAutomatic controlFiltration
Improvements in product water throughput from a reverse osmosis (RO) membrane filter achieved by thinner feed spacers in the RO element, enhanced recovery (ratio of permeate to feed), pressure recovery of the retentate fluid pressure opposing the feed water pressure, and fluid pulsing of the RO element feed stream. The system of the invention preferably comprises a dual head reciprocating pump, an RO element, and a differential pressure activated (“DPA”) valve. The DPA valve, in combination with connecting the two pump heads to reduce required pump pressures, generates energy recovery. The frequency and amplitude of the reciprocating pump create a pulse wave in the RO element that improves permeate quality and throughput. A control system preferably monitors system parameters to optimize the reciprocating pump speed and amplitude in order to obtain maximum throughput and permeate quality from any given RO element configuration. Also a highly compact, portable RO system comprising a piston and a DPA valve. The piston separates the feed chamber from the retentate chamber. The pressure difference between the two chambers determines the pressure recovery of the system. The DPA valve opens and closes hydraulically to automatically control the retentate discharge as the system is pumped.
Owner:AQUA RES PTY LTD

A recovery process for tungsten-cobalt cemented carbide

The invention belongs to the technical field of hard alloys, and in particular relates to a process for recycling waste tungsten-cobalt hard alloys. In the recovery process of the present invention, (1) cleaning the waste cemented carbide; (2) heating the cleaned waste cemented carbide to above 800°C, and immediately transferring it into a vacuum airtight container, and at the same time passing it into -150 Cool down the liquid inert cold medium below ℃, and the waste cemented carbide is broken into fragments; (3) Grinding and pulverizing the crushed fragments into a powder with a particle size of 2-8 μm to obtain the required cemented carbide alloy powder. The recovery process of the present invention utilizes the stress change difference caused by the rapid temperature difference to force the hard alloy to overcome its own strength and break into small particle size fragments, and because the low temperature of liquid nitrogen can reach -180°C, the hard alloy is forced to The high-quality alloy is broken into fragments with smaller particle sizes, and the step of grinding and crushing with smaller particle sizes can be directly carried out without secondary mechanical crushing, and the process is simple.
Owner:浙江锐利硬质合金有限公司

Foam molding method and apparatus

According to this invention, there is provided a molding method and apparatus which increase the gas permeation speed in obtaining a foamed resin molded product by letting a gas permeate a molten resin material. To achieve this object, a chip- or pellet-like resin material is evacuated and subjected to dehumidifying / drying processing, and replacement processing in an inert gas in a pre-processing unit, the resin material is then held in an inert gas of a predetermined temperature and pressure in an inert gas permeation unit for a predetermined period of time, the temperature and pressure are decreased, the material is fed to a material hopper whose temperature and pressure are controlled, the material is fed to a plasticizing unit to which a gas of a predetermined temperature and pressure is fed, the resin material is melted in the plasticizing unit, the resin material is injected / charged into a mold which is evacuated in advance to a pressure not more than atmospheric pressure, the pressure is restored to atmospheric pressure after the resin material is cooled for a predetermined period of time, and a foamed product is extracted by opening the mold.
Owner:CANON KK

Deep-water composite conduit tripping-in tubular column and underwater mounting method thereof

InactiveCN107191138AShorten run length"Waiting time savesLiquid/gas jet drillingOcean bottomEngineering
The invention discloses a deep-water composite conduit tripping-in tubular column and an underwater mounting method thereof. The underwater mounting method comprises the steps that after the deep-water composite conduit tripping-in tubular column is connected with a drilling platform, a drain valve is opened; the deep-water composite conduit tripping-in tubular column is delivered to the seabed, and when the lower end of a conduit column body makes contact with the seabed mud surface, a jetting tripping-in procedure is started; when the jetting tripping-in procedure is conducted with maintained predetermined hydraulic jet parameters, the hook hanging load is gradually decreased, and thus part of tubular column loads are applied to a bucket foundation; meanwhile, water pumping power in the bucket foundation is increased, and pressing-in of the bucket foundation is achieved while jetting tripping-in of the deep-water composite conduit tripping-in tubular column is achieved; and when complete tripping-in of the bucket foundation is achieved, the drain valve is closed, and tripping-in of the deep-water composite conduit tripping-in tubular column is achieved. According to the deep-water composite conduit tripping-in tubular column and the underwater mounting method thereof, the waiting time of stress recovery of the deep-water composite conduit tripping-in tubular column can be omitted, and the tripping-in length is reduced.
Owner:PETROCHINA CO LTD

High temperature and high pressure gas well wellhead pressure measuring adaptability discriminating method

The invention discloses a high temperature and high pressure gas well wellhead pressure measuring adaptability discriminating method. The method is characterized by measuring a gas productivity index PI and a production pressure difference delta P of a gas well, wherein if PI is less than 1.25+0.6174delta P, the wellhead pressure measuring data is available, and the wellhead pressure measurement can be used for substituting the bottom pressure measurement; if PI is more than or equal to 1.25+0.6174delta P, the wellhead pressure measuring data is not available, and the bottom pressure measurement cannot be substituted by the wellhead pressure measurement. The method has beneficial effects that a simple rule for discriminating the dynamic normality of the wellhead pressure in a pressure restoration test is determined by studying the occurrence condition of the dynamic abnormality of a wellhead, a discrimination relation applicable to the wellhead pressure restoration test is established, and evidence is provided for selecting a test scheme.
Owner:SOUTHWEST PETROLEUM UNIV

Method for determining physical properties and crack characteristic parameters of oil and gas reservoirs with layered fracturing and commingling production

The invention discloses a method for determining physical properties and crack characteristic parameters of oil and gas reservoirs with layered fracturing and commingling production. The method comprises the following steps of selecting a well with layered fracturing and commingling production as a target well, collecting and sorting basic information of the well and carrying out a shut-in pressure recovery test on the well; according to a weight coefficient determined by the product of the effective thickness of each small layer and the adding amount of sand, carrying out small-layer splitting on the commingling production output of the well; selecting common business well test software, reading pressure recovery test data and drawing a double logarithmic curve of actually measured pressure and pressure derivatives; selecting a fractured well test interpretation model to carry out well test fitting interpretation on each small layer and obtaining the characteristic parameters of eachsmall layer. The method can accurately obtain the physical properties of the small layer reservoirs and the artificial crack characteristic parameters of the well with layered fracturing and commingling production and can provide a data support for efficient development and the like of the oil and gas reservoirs.
Owner:SOUTHWEST PETROLEUM UNIV +3

Method for confirming oil drainage front edge with consideration of starting pressure gradient

The invention provides a method for confirming an oil drainage front edge with the consideration of a starting pressure gradient. The method for confirming the oil drainage front edge includes the steps of S1, obtaining the physical properties and fluid parameters of multiple strata according to well logging interpretation results, well completion geological reports and high-pressure physical property analysis reports, S2, confirming comprehensive compression coefficients, S3, obtaining accumulated production and pressure recovery pressure differences according to low permeability reservoir oil well production reports and pressure recovery well testing data, S4, drawing a relationship line between yields and pit bottom pressure differences according to oil well potential test data, confirming the intercept of the line, and S5, confirming the oil drainage front edge of a low permeability reservoir oil well according to the parameters obtained from S1-S4. According to the method for confirming the oil drainage front edge with the consideration of the starting pressure gradient, the characteristics of a low permeability reservoir and the actual dynamic data of a producing well are fully considered, and the accuracy in confirming the oil drainage front edge of the low permeability reservoir oil well is improved.
Owner:CHINA PETROLEUM & CHEM CORP +1

Dual-flow common combustor chemical laser

The invention herein is directed to a dual-chamber combustion laser assembly having lighter weight (per unit flow area), a more compact, flexible configuration for packaging in spacecraft, aircraft, or ground mobile vehicles, higher mass efficiency from lower heat loss and proven power extraction efficiency of linear lasers, superior output beam quality by incremental compensation of gain medium optical path disturbances and by reduction in time-dependent variations in structural and gain medium characteristics, lower cost and shorter fabrication time for modular dual flow laser and linear optics, more efficient pressure recovery with side-wall isolation nozzles and compact diffuser configurations, and increased small signal gains for more efficient extraction of overtone power.
Owner:LEIDOS

Intelligent photovoltaic scavenging machine posture adjusting method

The invention relates the technical field of photovoltaic scavenging machines, in particular to an intelligent photovoltaic scavenging machine posture adjusting method. The method comprises the steps that S101, pressure borne on road wheels is detected through pressure sensors arranged on the two road wheels respectively and is recorded as F1 and F2; S102, the inclining state of an intelligent photovoltaic scavenging machine is determined by comparing the F1 with the F2, and S104 is conducted if the F1 is equal to the F2; S103, the rotating speed of an upper walking motor and a lower walking motor is adjusted according to the inclining state of the intelligent photovoltaic scavenging machine, and then the procedure returns to the S101; S104, the procedure is finished. After the method is adopted, the pressure borne on the road wheels is detected, and when the borne pressure difference is judged to be up to a certain limiting value, the pressure borne on a suspension wheel is made to return to a balance state by adjusting the rotating speed of the lower walking motor through a control system, and the purpose for adjusting the walking posture is achieved.
Owner:富韦淇

Anti-impact protection apparatus of ultraviolet sterilizer

PendingCN109279679AAvoid affecting water quality safetyAvoid compromising water securityWater treatment parameter controlWater/sewage treatment by irradiationMagnetic tension forceWater quality
The invention provides anti-impact protection apparatus of an ultraviolet sterilizer. The apparatus comprises a metal cylinder and an ultraviolet lamp with a quartz sleeve, the metal cylinder is provided with a water inlet and a water outlet, a pipeline connected with the water outlet is provided with a check valve, and a pressure sensor, a programmable logic controller (PLC), an intelligent controller and a magnetic switch device are arranged on the metal cylinder. According to the apparatus, the pressure sensor and the PLC are used for identifying whether backflow or water hammer occurs or not; when the pressure value exceeds a set range, the PLC sends a signal to the intelligent controller to control the closing of the magnetic switch device; and when the pressure is recovered to the set range, the PLC sends a signal to the intelligent controller to control the opening of the magnetic switch device. According to the anti-impact protection apparatus, the quartz sleeve can be effectively protected, so that the situation that the ultraviolet sterilizer cannot normally work and safety of water quality is influenced due to the fact that the quartz sleeve is broken is avoided.
Owner:天津晨天自动化设备工程有限公司

Thermoplastic vulcanizate compression stress relaxation reversible recovery behavior characterization method

The invention relates to a thermoplastic vulcanizate compression stress relaxation reversible recovery behavior characterization method, which provides an effective method for qualitative and quantitive characterization of reversible recovery. The characterization method comprises the steps of a, applying a compression strain on a sample, measuring a primary stress relaxation behavior, wherein the initial height of the sample is h0, and the height becomes hs when the sample is compressed to the stipulated strain; b, after finishing the primary test, carrying out heat treatment on the sample, and then cooling to the room temperature, wherein the height is h1, and the compression set is recorded as shown in the below figure; c, carrying out secondary compression stress relaxation test on the heat-treated sample, and by adopting the h1 as a baseline, applying the same strain of the primary test; d, reading the maximum stress in a stress relaxation curve, wherein the maximum stress recovery rate is equal to (the secondary stress relaxation maximum stress / the primary stress relaxation maximum stress) x 100 percent; e, qualitatively judging a reversible recovery degree according to a close degree of two-time stress relaxation behavior curves; and quantitatively judging the reversible recovery degree according to the compression set and the maximum stress recovery rate.
Owner:QINGDAO UNIV OF SCI & TECH

Method for using negative pressure perforation technology for realizing pressure recovery well logging interpretation

The invention discloses a method for using a negative pressure perforation technology for realizing pressure recovery well logging interpretation. The method comprises the steps that first, a negative pressure perforation tubular column capable of realizing a negative pressure perforation process is obtained; second, a storage type pressure and temperature instrument is connected to the position near a perforation gun on the negative pressure perforation tubular column, and continuously records temperature and pressure data obtained after perforation according to an oil deposit design; third, formation fluid flows into a shaft after the perforation gun is fired, the rising height of the liquid level inside an oil tube is continuously recorded and calculated, and the total amount of liquid flowing out of a formation is calculated; fourth, a perforating barrel string is taken out after a designed pressure test time; direct reading of the storage type pressure and temperature test data is conducted through software, and various well logging interpretation data results are obtained finally. The method can realize perforation and pressure recovery tests by placing the tubular column for one time, conduct well logging interpretation to obtain various stratum parameters, shorten the formation testing time, avoid pollution to a hydrocarbon reservoir and provide guiding advice and strong data support for following oilfield development work.
Owner:CHINA PETROLEUM & CHEM CORP +1

Oil reservoir well test curve interpretation method and device for fault-karst carbonate

The invention provides an oil reservoir well test curve interpretation method for fault-karst carbonate, which comprises the following steps: acquiring pressure recovery well test data of a target object, performing type analysis on a pressure recovery well test curve, and determining a curve type corresponding to the pressure recovery well test curve; determining a seam / hole combination model to which the target object belongs through the curve type, and performing key parameter adjustment fitting in combination with a pressure recovery well testing curve to obtain key parameters of the target object; and performing inversion based on the key parameters in combination with an inversion formula to obtain application parameters representing reservoir characteristics so as to interpret the reservoir characteristics of the target object. According to the method, type analysis is carried out on the pressure recovery well test curve, fracture / cavity combination model judgment is carried out based on the determined type, fitting and further inversion are carried out according to different fracture / cavity combination models, and application parameters representing reservoir characteristics are obtained. According to the method, the well test curve characteristics generated by the complex fault-karst carbonate reservoir can be effectively known, and schematic guidance is provided for subsequent production and development.
Owner:CHINA PETROLEUM & CHEM CORP +1

Strength checking method based on cabin door detail model

The present invention relates to a strength checking method based on cabin door detail door, and belongs to the field of airplane structure strength design. The method comprises: firstly, establishing a finite element model of a cabin door, and constructing a complete structure calculation model and a a breakage safety calculation model of the cabin door according to data of the finite element model; then, carrying out static calculation, so as to calculate node equilibrium force, equivalent stress of a shell element, stress of a stress recovery point of a beam element and axial stress between the beam element and a rod element; further carrying out calculation to obtain data applicable for calculation by the strength checking method, comprising stress checking work stress of each structure and stability calculation working stress of each structure; and calculating a stress checking allowable value of each structure and a stability calculation allowable value of each structure, and comparing the two values to obtain a safety margin of each structure. The method provided by the present invention can help complete strength checking based on a cabin door detail model, and the method is simple and reliable, and improves working efficiency.
Owner:XIAN AIRCRAFT IND GROUP

Quantitative diagnosis method for edge water invasion front edge

The invention discloses a quantitative diagnosis method for edge water invasion front edge, and belongs to the technical field of gas field development. The method comprises the steps that pressure recovery well testing pressure data of a target gas well in n periods are obtained, wherein n is a positive integer; for the ith period in the n periods, based on the pressure recovery well testing pressure data of the ith period, a pressure recovery well testing double logarithmic curve of the ith period is drawn, and i is a positive integer smaller than or equal to n; the pressure recovery well testing double logarithm curves of the n periods are superposed to obtain a superposed pressure recovery double logarithm curve; and the distance between the edge water invasion front edge and a wellbore of the target gas well based on the superposed pressure recovery well testing double logarithmic curve is determined. According to the quantitative diagnosis method for the edge water invasion frontedge based on an unstable well testing analysis method, the gas well water invasion characteristics and the change rule thereof and the water body propelling speed can be known by combining the geological characteristics, so that a foundation is laid for optimization and adjustment of a water-bearing gas reservoir development technology strategy.
Owner:PETROCHINA CO LTD

Wave plate falling device of welded metal corrugated pipe

The invention discloses a wave plate falling device of a welded metal corrugated pipe, which is mainly characterized in that a lower die assembly comprises a lower die base, a cutting die, an external pressure plate and an internal pressure plate. The upper end of the cutting die protrudes out of the top face of the lower die based and the top face of the cutting die is in a wave plate curve face. The external pressure plate is attached to the outer wall of the cutting die. The top face of the external pressure plate is aligned with the side face outside the cutting die and forms a first chamfered angle with the top end of the external pressure plate at the attached place of the cutting die. The internal pressure plate is placed in the cutting die, and the bottom face thereof leans against the lower die base through an elastic mandrill. The internal pressure plate is attached to the inner wall of the cutting die, and the to top face of the internal pressure plate is aligned with the highest point on the top face of the cutting die and forms a second chamfered angle with the top end of the internal pressure plate at the attached place of the cutting die. An upper die assembly comprises a rubber template fixed on the bottom face of the upper die base. The bottom face of the rubber template is planar. The rubber template flexibly squeezes, molds and cuts the wave plate, and the squeezing stress of the wave plate is small, so that the wave plate does not deform in case of stress recovery, and the molded wave plate is accurate in parameters and burr-free.
Owner:DONGGUAN HUAHUI PRECISION MASCH CO LTD

Method of pre-metal dielectric (PMD) stress recovery

InactiveCN102254855ASolve the problem of stress loss caused by moisture absorptionAbsorb moisture recoverySemiconductor/solid-state device manufacturingDielectricElectrical conductor
The invention discloses a method of pre-metal dielectric (PMD) stress recovery. The PMD possesses a contact hole and the contact hole is just cleaned. The method comprises the following steps: irradiating the PMD by using an ultraviolet lamp; measuring a first wafer flexibility after the PMD is generated and a second wafer flexibility when ultraviolet irradiation is performed; comparing the first wafer flexibility with the second wafer flexibility; stopping the ultraviolet irradiation if a flexibility difference is less than 10 micrometers, otherwise, continuing the ultraviolet irradiation. By using the invention, a problem of stress loss caused by the PMD which absorbs water during a conductor device manufacture process can be effectively solved; the water absorbed by the PMD during technology links, such as chemically mechanical polishing, cleaning and the like, can be effectively removed so that stress of the PMD can be recovered; performance of a manufactured semiconductor device can be raised. The method of the invention has advantages of low implementation costs, simple processes, short processing time, economy, high efficiency and utility.
Owner:SEMICON MFG INT (SHANGHAI) CORP +1

Reverse osmosis system with valves for controlling a work exchanger sysyem

A system and method for the structure and operation of a work exchanger system in a reverse osmosis plant is disclosed. The work exchanger system is characterized by a an array of multiple work exchanger chambers each being individually controlled and operated to a meet an aggregate need of pressure recovery by the entire system. Each work exchanger chamber is characterized by at least one valve having a bypass system which is configured to equalize pressure on both sides of the valve. Such an equalizing process's delays are monitored and controlled by the central systems' controlling system to create no restrictions to reject high pressure brine flow in a reverse osmosis system at any given time.
Owner:IDE TECHNOLOGIES

Chinese herbal composite feed additive used for transportation stress recovery of beef cattle

InactiveCN102511687BPromote healthy growthReplenish as soon as possibleAnimal feeding stuffFood additiveVitamin C
The invention relates to a Chinese herbal composite feed additive used for transportation stress recovery of beef cattle, and effectively solves the poor digestive function and immunity problems resulted from poor body conditions brought about during transportation of beef cattle. The additive is prepared by the following components by weight percent: 22-28% of medicated leaven, 15-20% of haws, 0.5-1.5% of astragalus polysaccharides, 1-2% of active yeast, 1.5-2% of niacinamide, 0.7-1.2% of vitamin C, 0.25-0.4% of vitamin E, 0.25-0.5% of zinc sulfate, 20-25% of potassium chloride, 10-15% of ammonium chloride, and 10-15% of magnesium oxide. Specifically, each component is first crushed to a particle size below 0.5mm respectively, the niacinamide, the vitamin C, the vitamin E, the astragaluspolysaccharides and the active yeast are mixed uniformly, then the mixture is mixed with the potassium chloride, the ammonium chloride and the magnesium oxide uniformly, and finally the haws and the medicated leaven are added and stirred uniformly, thus obtaining the feed additive. The composite feed additive of the invention has the advantages of scientific prescription, abundant raw materials, and easy production. Application of the feed additive in the feed of beef cattle after transportation stress can promote the beef cattle to supplement electrolytes, trace elements and vitamins as quickly as possible after transportation stress. Thus, the composite feed additive provided in the invention has the effects of improving body conditions, enhancing digestion function and immunity.
Owner:HENAN UNIV OF CHINESE MEDICINE

A horizontal well fixed string multi-parameter combination test rapid water finding string and method

ActiveCN105114061BEnsure construction safetyThe pressure recovery value is validSurveyWater levelTest string
The invention provides a multi-parameter combination test of a horizontal well fixed pipe string to quickly find a water pipe string and a method. The testing instrument (flowmeter, pressure gauge, etc.) Connect and run into the horizontal section of the horizontal well with the packer. According to the number of fracturing stages of the horizontal well and the characteristics of water breakthrough, different numbers of packers are equipped to isolate the horizontal section into different production intervals, and flow meters and pressure gauges are placed correspondingly in each production interval. After running the test pipe string into the well, shut down the well and carry out the pressure recovery test of each layer. After the pressure recovery test is completed, the well will be opened for production, and the large-volume swabbing parameters will be used for production drainage. After a certain period of production, the pipe will be pulled out. The pressure, temperature, flow and other parameters of the pressure gauge are played back in the column, and the pressure, flow and other parameters of each sealing section are tested in sections to comprehensively judge the water-producing section and improve the accuracy and efficiency of water finding in horizontal wells.
Owner:PETROCHINA CO LTD

Determining breathing attributes by a detection device

A method, apparatus and computer program product are provided for determining stress recovery based on chest and abdominal breathing information from a detection device such as a radar detection device. Stress recovery may be determined by monitoring a phase difference between chest and abdominal breathing relative to a stress indicator, such as heart rate variability. Target respiration information may be determined and / or calibrated for the particular user based on the stress indicator. Breathing exercises may be provided to the user to assist in steadying their breathing and recovering from stress. Based on the monitoring of the chest and abdominal breathing information, efficacy of the breathing exercise may then be determined based on whether the user is recovering from stress, and further feedback may be provided to the user.
Owner:NOKIA TECHNOLOGLES OY

Pipeline burst prevention valve assembly

The invention discloses a pipeline burst prevention valve. The pipeline burst prevention valve is provided with pressure buffer cavities, when the pressure intensity in a pipeline is too large, the valve can automatically guide fluid into the buffer cavities inside the valve, so that the pressure intensity in the pipeline is reduced, and then the pipeline is protected and prevented from bursting;the two pressure buffer cavities are arranged, when the pressure in the first-stage buffer cavity exceeds the pressure regulation and control limit, the fluid can be guided into the second-stage buffer cavity, so that the pressure regulation capability of the pipeline burst prevention valve is improved; and an information feedback function is achieved, signals can be rapidly fed back to an alarm information device for alarming, and the arranged pressure buffer cavities can guide the fluid in the cavities back to a main pipeline in time when the pipeline pressure recovers to be normal, so thaton one hand, resource waste and maintenance cost are avoided, and on the other hand, the situations that the external environment is polluted and harmed and even personnel poisoning and death are caused due to the fact that toxic and harmful substances in the pipeline leak to the outside are avoided.
Owner:杨帆
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