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142results about How to "Improve diversion capacity" patented technology
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Pumping design method based on effective support coefficient
PendingCN119514045AImprove diversion capacityincrease displacementGeometric CADDesign optimisation/simulationHydraulic fracturing proppantsFluid–structure interaction
The invention provides a pump injection design method based on an effective support coefficient, and belongs to the technical field of oil and gas field development, and the method comprises the following steps: S1, based on a fluid-solid coupling theory, establishing a hydraulic fracture proppant migration equivalent model considering a bedding fracture; s2, with the optimal laying area as the target, the hydraulic fracture proppant migration equivalent model is used for simulating the proppant migration conditions under different parameter combinations, and an effective support coefficient is calculated; s3, based on the calculation result of the effective support coefficient, analyzing the change rule of the effective support coefficient under different parameters, and establishing a distribution pattern; and S4, on the basis of the distribution pattern, the pump injection process is optimized by utilizing the optimal range of the effective support coefficient. By means of the method, optimization of pumping key parameters such as displacement, sand ratio, sand adding particle size and particle size combination can be achieved, improvement of the overall flow conductivity of a shale oil reservoir fracturing fracture system is achieved, and therefore the fracturing effect is improved.
Owner:PETROCHINA CO LTD
Fracturing process for tight oil horizontal well
ActiveCN119145825AImprove mining efficiencyIn line with the actual work sceneOther gas emission reduction technologiesFluid removalInjection pressureHorizontal wells
The invention relates to the technical field of oil production engineering, in particular to a fracturing process for a tight oil horizontal well, which comprises the following steps: acquiring geological data information; determining a rock stratum state according to the pore reference value of the to-be-constructed area and the tight oil enrichment degree, and determining a target stratum setting mode according to the rock stratum state; perforation is conducted on the toe end of the horizontal well, and fracturing operation is conducted on all target layers after perforation of the toe end of the horizontal well is completed; the injection amount of CO2 fracturing fluid is determined according to the length of the reference oil-containing sandstone, and the content of a thickening agent is determined according to the reservoir pressure; if the fracture density is smaller than the preset fracture density, it is determined that the fracturing fluid adjusting mode of the rear target layer is an optimization mode determined according to the gravel particle size difference degree or adjustment is conducted according to the injection pressure of CO2 fracturing fluid according to the gravel state of the proppant; after the CO2 fracturing fluid is injected into the whole well section, the well closing time is determined according to the comprehensive reference value; and drilling and removing the bridge plug. The fracturing effect can be improved, and the exploitation efficiency of the tight oil horizontal well is improved.
Owner:DAQING OILFIELD CO LTD +1
Self-aggregation weak-consolidation multifunctional sand control agent and application thereof
InactiveCN119144312AImprove diversion capacityHigh bonding strengthFluid removalDrilling compositionMeth-Organosolv
The invention discloses a self-aggregation weak-consolidation multifunctional sand control agent and application thereof, and belongs to the technical field of oil gas chemistry. The sand control agent is prepared by simply mixing 0.2-0.6 part by weight of a hydrophobic modifier, 0.6-1.2 parts by weight of a chemical modifier and 2-4 parts by weight of an organic solvent. The hydrophobic modifier is selected from one or more of the following components: methacryloyloxy silane, heptadecafluorodecyl trimethoxy silane, amino alkyl polydimethylsiloxane, octamethylcyclotetrasiloxane, poly [3-((2-aminoethyl) amino) propyl] methyl (dimethyl) siloxane, gamma-propyl trimethoxy silane and the like; the chemical modifier is a compound containing alkenyl. The sand control agent can be used for coating modification of a proppant, self-aggregation and clustering in water are realized, and solidified sand is formed through polymerization of the alkenyl-containing compound on the surface, so that the sand control effect is achieved; the sand control agent can also be directly added into fracturing fluid and permeates into a stratum to form a hydrophobic consolidation layer, so that the effect of stabilizing a rock wall surface is achieved.
Owner:CHENGDU HESHENG ENERGY TECH CO LTD
Ducted fan design method and device based on similarity criterion
ActiveCN119129138AQuick prediction of aerodynamic performancereduce computing costGeometric CADDesign optimisation/simulationSimilarity theoryControl engineering
The invention discloses a ducted fan design method and device based on a similarity criterion, and the method comprises the steps: taking a small ducted fan as a prototype, obtaining basic aerodynamic performance information of the small ducted fan through aerodynamic performance simulation, and obtaining a similarity relation of the aerodynamic performance of the ducted fan through a dimension analysis method in combination with a similarity theory; basic information such as the geometric dimension, the rotating speed and the incoming flow speed of the target large ducted fan is rapidly predicted; then, numerical simulation is conducted on the predicted large ducted fan, the aerodynamic performance of the large ducted fan is further verified, and therefore rapid design and performance prediction of the large ducted fan are achieved. According to the method, the large ducted fan is designed by utilizing the existing mature small ducted fan based on the similarity criterion, so that the scientificity and accuracy of the design are improved, the test and calculation cost is remarkably reduced, and the research and development period is shortened. And meanwhile, the aerodynamic performance and efficiency of the ducted fan can be improved.
Owner:SHANGHAI JIAOTONG UNIV +2
Waistline leakage-proof structure of paper diaper and paper diaper
The paper diaper comprises a skin-friendly layer, a urine absorption product and a liquid-tight bottom layer which are sequentially arranged in a stacked mode, a waistline leakage-proof structure is arranged between the skin-friendly layer and the liquid-tight bottom layer, and the urine absorption product is arranged in an interlayer area between the skin-friendly layer and the waistline leakage-proof structure. The auxiliary core body and the main core body in the urine absorption product contain super water-absorbent resin in different proportions, the layered design is beneficial to rapid absorption of urine and prevention of back seepage, the leakage-proof performance is improved, the liquid-leakage-proof middle layer located at the bottom of the urine absorption product can isolate the main core body from the liquid storage core body, and the leakage-proof performance of the urine absorption product is improved. The main core body can bear a large amount of urine flowing out suddenly, so that the liquid storage core body cannot be polluted and lose efficacy, when the urine absorption product loses efficacy in side leakage prevention, solute concentration between the flow guide core body and the liquid storage core body is not uniform, surface tension changes accordingly, and due to the fact that the surface tension of liquid with different concentrations is different, the urine absorption product cannot be polluted. This may cause the liquid to flow along areas with lower surface tension.
Owner:HANGZHOU SHUJIE HYGIENE PROD
Composite copper foil
PendingCN119252932Areduce square resistanceImprove diversion capacityElectrode carriers/collectorsVacuum evaporation coatingPhysical chemistryCopper foil
The composite copper foil comprises a supporting layer, a metal layer is arranged on the surface of the supporting layer, the supporting layer is provided with crystals, the crystal form of the crystals of the supporting layer is spherocrystal, the average particle size of the crystals of the supporting layer is larger than that of the metal layer, and the average particle size of the crystals of the supporting layer is larger than that of the metal layer. And copper metal or copper alloy is arranged in the metal layer. The metal layer can be in bonding contact with the spherocrystal of the supporting layer through a plurality of nanoscale particles, the acting force between particle molecules of the metal layer and molecules of the supporting layer is increased, the bonding strength can be improved, and therefore the bonding force between the metal layer and the supporting layer can be improved; meanwhile, the contact among metal layer particle molecules is increased, the overall sheet resistance of the metal layer is reduced, the flow conductivity of the metal layer is improved, the tensile strength of the metal layer is improved due to the fact that the contact among the metal layer molecules is large, and the composite copper foil is not prone to being stretched and damaged in the follow-up processing link.
Owner:SHENZHEN JINJIA JUNENG TECH CO LTD
Ultra-short radius drilling flexible power sub and use method thereof
ActiveCN115306322BRealize free combinationImprove mechanical propertiesDrilling rodsHydro energy generationDrive shaftHorizontal wells
The present invention is a flexible power sub for ultra-short radius drilling and a method for using the same. The flexible power sub is provided with a transmission shaft, a turbine housing, rotor blades and stator blades. An upper liquid port and a lower liquid port are provided in the transmission shaft. The turbine housing is fixed to the outside of the shaft body of the transmission shaft; the rotor blades are fixed to the outer wall of the transmission shaft, and the stator blades are fixed to the inner wall of the turbine housing. The rotor blades fixed to the outer wall of the transmission shaft can rotate freely in the stator blades fixed to the inner wall of the turbine housing; a rod body connection joint and a ball connection joint are provided at both ends of the shaft body of the transmission shaft, respectively. The flexible power sub can be matched with drilling tools in ultra-short radius side-drilling horizontal well flexible drilling tools such as existing flexible subs, and can realize the free combination of flexible power subs and flexible subs, as well as between flexible power subs and flexible power subs, and has a significant use effect and can produce significant economic and social benefits.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
Loose sandstone fracturing parameter optimization method considering proppant embedding
ActiveCN119466711Aimprove scienceimprove accuracyClimate change adaptationFluid removalMechanicsPetroleum engineering
The invention relates to a loose sandstone optimized fracturing method considering proppant embedding. The method comprises the steps that S1, basic parameter information of a fractured target reservoir is collected and arranged; s2, based on the rectangular reservoir model, considering the actual irregularity of the rectangular reservoir model, and performing necessary correction on the initial proppant index; s3, the optimal dimensionless production index and the dimensionless fracture flow conductivity corresponding to the optimal dimensionless production index are obtained; s4, calculating and optimizing the crack length and the crack width; s5, the crack width is correspondingly adjusted; s6, calculating the porosity of the propping agent in the crack and the permeability of the crack; and S7, further optimizing to obtain the fracture length and the fracture width which are more consistent with the actual condition, so as to ensure the optimality and the feasibility of a fracture design scheme. According to the method, the scientificity and the accuracy of fracturing design of the loose sandstone stratum are improved, and the flow conductivity of the cracks and the final recovery efficiency of an oil and gas well are remarkably improved.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
Efficient gelling agent for acidification and preparation method thereof
PendingCN119463844AImprove temperature resistanceincrease resistanceOrganic compound preparationCarboxylic acid salt preparationWell drillingPhysical chemistry
The invention relates to the technical field of compositions for drilling or well drilling, and particularly discloses a gelling agent for efficient acidification and a preparation method of the gelling agent. According to the preparation method of the gelling agent for efficient acidification, the prepared gelling agent is high in dissolution speed in an acid solution, and the acidification construction efficiency can be improved; meanwhile, the tackifying and temperature-resistant effects are good, the tackifying agent is suitable for high-temperature deep well acidification construction, the flow conductivity of acid-etched cracks and the penetration distance of acid liquor can be effectively improved when the tackifying agent is applied to the acidification liquor, and the purpose of deep acidification can be achieved.
Owner:SICHUAN SHENGNIAN TONGDI IND CO LTD
Binding cylinder assembly of novel spiral flow guide jacket
ActiveCN222578993UImprove diversion capacityEliminate connection gapsStationary conduit assembliesHeat exchanger casingsMechanical engineeringSpiral flow
The utility model discloses a novel wrapping cylinder assembly of a spiral flow guide jacket, which comprises a wrapping cylinder body arranged between a container shell and a jacket cylinder body, and a spiral flow guide plate is arranged on the peripheral side of the container shell corresponding to the inner side of the wrapping cylinder body. The inner side and the outer side of the spiral flow guide plate are tightly connected with the container shell and the wrapping barrel respectively, so that a spiral flow guide channel is formed among the container shell, the jacket barrel, the wrapping barrel and the spiral flow guide plate. Connecting gaps on the inner side edges and the outer side edges of the spiral flow guide plates are eliminated, the flow guide effect is enhanced through the spiral flow guide channels, the problem of short-circuit flow leakage is solved, heat loss of part of fluid caused by the connecting gaps of the spiral flow guide plates is avoided, and compared with a traditional jacket structure, the jacket structure has higher heat exchange efficiency and heat exchange uniformity, and the manufacturing temperature requirement of the jacket structure is lowered; and the production cost is reduced while materials are saved.
Owner:JIANGSU DONGFANG RUIJI ENERGY EQUIP CO LTD
Production process of enhanced absorption core body, paper diaper and pull-ups
ActiveCN119139081Afast absorptionIncrease infiltration rateAbsorbent padsBaby linensSoluble FilmProcess engineering
The invention relates to the field of disposable hygienic products, and provides a production process of an enhanced absorption core body, a paper diaper and pull-ups, and the production process comprises the steps of first polymer carrier conveying, wood pulp blanking, sap blanking, first water absorption particle blanking, second water absorption particle blanking and core body forming. The first water-absorbing particles and the second water-absorbing particles are arranged inside and on the top of the formed core body respectively, the first water-soluble films of the first water-absorbing particles and the second water-absorbing particles are dissolved when encountering water, the water-absorbing inner layer is released and makes contact with the water, water can be rapidly absorbed, the absorption speed and infiltration speed of urine can be greatly increased, and the core body is complex in structure and convenient to use. According to the technical scheme, multiple procedures are not needed for forming, forming is only conducted on the first macromolecule discharging device, the length of equipment is shortened, the production cost is greatly saved, the discharging accuracy of all material positions is improved, and the technical problem that the urine absorption speed of the core is low is solved.
Owner:QUANZHOU JIAHUA SANITARY PROD
Acid fracturing transformation method for complex lithologic carbonate reservoir
The invention belongs to the technical field of reservoir transformation of oil and gas field development engineering, and particularly relates to an acid fracturing transformation method for a complex lithologic carbonate reservoir. According to the method, during acid fracturing construction, the fracturing fluid and the acid fluid are alternately injected for multiple times, on one hand, the reservoir temperature is reduced, the acid rock reaction rate is slowed down, and the effective action distance of acid etching is increased, and on the other hand, the fingering phenomenon of the acid fluid in the crack is formed, non-uniform etching is formed, and the flow conductivity of the crack is improved. The low-viscosity gelled acid has low viscosity and high acid rock reaction rate, the low-viscosity gelled acid is injected firstly, and the corrosion crack width can be further enlarged on the basis that early-stage fracturing fluid forms a long-distance fracturing crack; according to the method, the high-viscosity acid liquid is injected, then the high-viscosity gelled acid is injected, the characteristics that the high-viscosity acid liquid is high in viscosity, low in acid rock reaction rate and long in acid etching effective action distance can be utilized, on the basis of an existing crack channel, the acid liquid is communicated to a far-end grey matter / cloudy matter filling crack, and a corrosion crack net is formed in a long distance.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
Emulsion-modified fracturing fluid for oil well protection and preparation method thereof
ActiveCN118853131Bhigh temperature resistancestable jobCarbamic acid derivatives preparationOrganic compound preparationFracturing fluidViscosity
The present invention relates to the field of fracturing fluid, and in particular to an emulsion-modified fracturing fluid for oil well protection and a preparation method thereof, which is used to solve the problem that although a conventional fracturing fluid can increase oil well production, it is easily ineffective in a high-temperature and high-pressure oil well environment, which not only affects the fracturing effect, but may also cause damage to the oil well, resulting in a poor oil well protection effect; the fracturing fluid has high temperature resistance and salt resistance, so that it can work stably in a high-temperature oil well, and has excellent viscosity, can effectively carry sand during the fracturing process, form stable cracks, is conducive to the effective exploitation of oil and gas resources, can maximize its advantages in oil well protection and production increase, and its preparation method is simple, the cost is low, it is easy to industrialize production, and has broad application prospects.
Owner:YANAN JIUFENG ENERGY TECH CO LTD
Full-automatic conveying device for special-shaped injection molding parts
ActiveCN119218639Aavoid wear and tearHigh dimensional accuracyConveyorsConveyor partsMechanical engineeringFully automated
Owner:JIANGSU MECQ INTELLIGENT TECH CO LTD
Bacteriostatic adult paper diaper containing sustained-release gel beads and production process thereof
PendingCN119587273AImprove diversion capacitystay dry and comfortableAbsorbent padsBaby linensFluff pulpBiology
The invention discloses a bacteriostatic adult paper diaper containing slow-release gel beads and a production process thereof, the bacteriostatic adult paper diaper comprises a surface layer, a composite flow guide layer, a composite core body and a bottom layer which are compounded in sequence, and a plurality of bacteriostatic flow guide strips in the width direction of the paper diaper are arranged in the flow guide layer; the composite core is prepared by mixing slow-release gel beads, high-molecular water-absorbent resin and fluff pulp, and the manufacturing method of the antibacterial adult paper diaper comprises the following steps of S1, preparing the antibacterial flow guide strips, S2, preparing the slow-release gel beads, S3, preparing the composite flow guide layer and the composite core body, and S4, sequentially compounding the surface layer, the composite flow guide layer, the composite core body and the bottom layer to obtain the antibacterial adult paper diaper. According to the paper diaper, the bacteriostatic flow guide strips are arranged in the composite flow guide layer of the paper diaper, and the slow-release gel beads are mixed in the composite core body, so that the dual bacteriostatic effect is achieved, the bacteriostatic flow guide strips can form an effective bacteriostatic barrier on the surface of the paper diaper, and meanwhile, the bacteriostatic components in the slow-release gel beads can provide lasting bacteriostatic protection for the core body.
Owner:GUIZHOU KABU BABY PROD CO LTD
Screening device for corn seeds
ActiveCN224272184UEasy to assembleImprove diversion capacitySievingGas current separationAgricultural scienceAgricultural engineering
The utility model relates to the technical field of corn seed screening, and discloses a screening device for corn seeds, which comprises a fixed bottom plate and a screening box, one side of the top of the screening box is communicated and provided with a feed port, and a hollow area is formed on a partition plate and positioned on the right side of a baffle plate. The partition plate is fixedly installed at the upper position in the screening box, the top of the partition plate is divided into two areas, one area is the solid area, the other area is the hollow area, after an air bellow is assembled, the air feeder on the side edge is started to work to supply air, airflow is guided into the screening box through the circulating pipe after being filtered through the filter plate, and therefore the screening effect is achieved. Therefore, when feeding is conducted at the position of the feeding port, air flow blows corn seeds to shift rightwards to reach the position above the hollow area, particles such as stones with the gravity larger than that of the corn seeds are located above the solid area, and the materials flow out of the hollow area and are screened through the screening plate under guiding of the material guiding plate. In this way, the overall screening capacity is well improved in the working process.
Owner:SHANDONG YANFENG SEED IND CO LTD
Quartz sand proppant for fracturing and preparation method thereof
InactiveCN119490841AHigh degree of sphericitylow densityFluid removalDrilling compositionHexamethylenetetramineResin coating
The invention discloses a quartz sand proppant for fracturing and a preparation method thereof, and relates to the technical field of quartz sand proppants. The proppant comprises the following raw materials in parts by weight: 25-50 parts of quartz sand and 5 parts of a modified epoxy resin coating agent. A first-generation polymer is prepared through the reaction of urotropine and tromethamine, then the first-generation polymer reacts with maleic anhydride to prepare a white crystalline solid, and then the white crystalline solid and bisphenol A epoxy resin are subjected to a ring-opening reaction to prepare a yellow transparent viscous polymer. And finally, grafting hydroxyl-terminated polydimethylsiloxane to the yellow transparent viscous polymer to obtain a modified epoxy resin film coating agent, and then mixing the modified epoxy resin film coating agent with quartz sand to obtain the quartz sand proppant for fracturing. The quartz sand proppant for fracturing prepared by the invention has high sphericity, low density and high flow conductivity.
Owner:SICHUAN GUANGKUANG NEW MATERIALS CO LTD
A floating object removing apparatus for sewage treatment
The utility model provides a kind of floating object removing equipment for sewage treatment, including grating conveyor, one end of the grating conveyor is provided with bottom backing plate, the other end of the grating conveyor is equipped with two mutually symmetrical conveyor end plate, transmission roller is rotatably installed on the bottom backing plate, the grating belt of the grating conveyor is driven and wound on the surface of transmission roller, the both ends of the bottom backing plate are respectively fixedly connected with height-adjusting plate;The utility model can flexibly adjust the height and angle of the device according to actual demand by setting through the cooperation of height-adjusting plate and mounting guide rail plate, so as to adapt to different sewage treatment scenarios.In addition, the design of positioning screw further enhances the stability of the device, keeps accurate position control during the sliding process of the extension slide, avoids the deviation problem caused by vibration or external force, and improves the flexibility of the equipment.
Owner:KUNSHAN KANGZHIHONG ENVIRONMENTAL PROTECTION ENG CO LTD
Paper diaper with high absorptivity
The utility model relates to the field of disposable hygienic products, and provides a paper diaper with high absorptivity, which comprises a liquid-permeable top layer, an absorption core layer and a liquid-tight bottom layer, the absorption core layer comprises an absorption part and two folding parts, the two folding parts are respectively connected with two ends of the absorption part and are upwards folded to abut against the top surface of the bottom layer, and the two folding parts are connected with the absorption part. A flow guide channel is formed between the two folding parts, and the width of the flow guide channel in the middle is smaller than that of the flow guide channels at the front and rear ends; at least one flow guide groove is formed in the middle of the absorption part, and one end or two ends of the flow guide groove extend to the position below the folding part. The diversion channels enable a large amount of urine to quickly diffuse to the front and rear ends, the coverage area of the middle folding part is larger than that of the front and rear folding parts, the middle high polymer materials are more, the absorption rate of the absorption core layer is improved, part of liquid can enter the space between the folding parts and the absorption part through the diversion grooves, and the diversion infiltration speed of the liquid is increased; the technical problem that the absorption rate of the absorption core body is low is solved.
Owner:FUJIAN YIFA SANITARY PROD CO LTD
A reservoir engineering design method of hydraulic deep-penetration guided fracture
PendingCN122257758AAchieve the purpose of "targeted" potential tappingImprove diversion capacityFluid removalSoil scienceReservoir engineering
The present disclosure relates to a kind of water deep penetration guide seam fracturing reservoir engineering design methods, comprising: using water deep penetration perforation method, drill open horizontal long hole in the top of thick oil layer, the horizontal long hole is drilled in low water content direction on plane, and drainage channel is formed in the part where water drive oil capacity is weak;The penetration length of the water deep penetration perforation is determined according to the development thickness of oil layer, injection-production connection relationship, injection-production distance, the number of perforation is in the same direction on the top of each subdivision layer blocked by interlayer, and it is 0.2-0.4m away from upper barrier or interlayer;After the water deep penetration perforation, hydraulic fracturing is carried out to form artificial fracture, let the drilled horizontal long hole guide the longitudinal position and horizontal trend of artificial fracture, to improve the flow conductivity again, realize the purpose of "targeting" tapping of remaining oil enrichment site in the cubic of injection-production well positive rhythm oil layer.
Owner:DAQING OILFIELD CO LTD +1
Reinforced drainage hoop
ActiveCN222620166Uhigh strengthImprove diversion capacityOverhead installationElectric connection basesFlangeFastener
The utility model discloses a reinforced drainage hoop, and relates to the technical field of electric power fittings, the reinforced drainage hoop comprises a hoop body, a hoop cover plate, a fastening bent plate, a telescopic drainage plate and a fastener, the hoop body and the hoop cover plate are fixed on a tubular bus of a welding type three-to-one wire clamp through the fastener; one side of the telescopic drainage plate is fixedly connected with the hoop body through a fastener, and the other side of the telescopic drainage plate is fixedly connected with the welding type three-to-one wire clamp drainage plate; one side of the fastening bent plate is fixedly connected with the hoop body through a fastener, and the other side of the fastening bent plate is fixedly connected with the welding type three-to-one wire clamp drainage plate. The reinforced drainage hoop can effectively solve the problem that a tubular bus and the root of a flange plate are torn due to the fact that an original welding type three-to-one wire clamp is under the action of external force such as long-term wind vibration, can effectively improve the flow guide effect, has the advantages of being compact in structure, convenient to install and good in flow guide performance through optimization design, and is suitable for popularization and application. The operation stability of the power transmission line can be improved.
Owner:NANJING LINE ACCESSORIES MFG +1
Flow guiding device and air conditioner with flow guiding device
ActiveCN224215532Uavoid deformationNot easy to shiftDucting arrangementsLighting and heating apparatusAir volumeWind field
The utility model provides a flow guide device and an air conditioner with the flow guide device, the flow guide device is arranged at an air supply outlet of a fan, and the flow guide device comprises a flow guide plate and a surrounding plate; the coaming is installed on the fan, on the air supply path of the air supply outlet, the first end of the flow guide plate is connected with the fan, the second end of the flow guide plate inclines towards the central axis of the air supply outlet, the second end of the flow guide plate and the coaming define a flow guide air duct, and the flow guide air duct communicates with the air supply outlet. According to the utility model, the guide plate is arranged at the air supply outlet, so that air can uniformly cover each area of the evaporator when passing through the guide air duct, the problem of insufficient air quantity at the bottom of the original evaporator is effectively solved, and the air field distribution on the windward side of the evaporator is more uniform.
Owner:GREE ELECTRIC APPLIANCE INC OF ZHUHAI
A dry-wet separation cooler for cooling tower
ActiveCN115371484Bplay a diversion roleavoid cloggingTrickle coolersCooling towerMechanical engineering
The present invention relates to the technical field of cold end optimization of power generation system, and in particular to a dry-wet separation cooler for cooling tower. Its technical scheme includes: a dry-wet separation cooler for cooling tower, including a partition, a dry guide plate, a wet guide plate, a dry baffle and a wet baffle, wherein the dry guide plate, the wet guide plate, the dry baffle and the wet baffle are located on both sides of the partition, the partition, the dry guide plate and the dry baffle constitute a dry channel for air circulation, an arc-shaped guide plate is provided at the top between the partition and the dry baffle, the partition, the wet guide plate and the wet baffle constitute a wet channel for heat exchange between air and circulating water, and a first mushroom-shaped fin and a second mushroom-shaped fin are provided on both sides of the partition, respectively, and a ventilation hole array is provided at the bottom of the partition, and the ventilation hole array connects the dry channel and the wet channel. The present invention realizes further cooling of circulating water in the cooling tower on the basis of high cooling efficiency and low additional damping.
Owner:ZHANGXIA JINAN PROVIDING WATER & CHANGING HEAT EQUIP CO LTD
Petroleum fracturing sand with multi-layer composite structure and preparation method thereof
PendingCN122012070Ahigh strengthReduce breakage rateFluid removalHydraulic fracturingCompressive strength
The invention discloses petroleum fracturing sand with a multi-layer composite structure and a preparation method of the petroleum fracturing sand, and belongs to the technical field of oil and gas exploitation, and the petroleum fracturing sand is prepared by adopting a three-layer composite structure of a high-strength inner core, an interface transition layer and a high-toughness shell. By means of the structural design, the product has the high compressive strength (larger than or equal to 8000 psi) of the inner core and the high toughness and low breakage rate (smaller than 3%) of the outer shell at the same time, and the long-term flow conductivity of fractured cracks is remarkably improved. The hydraulic fracturing fluid is especially suitable for hydraulic fracturing operation of unconventional reservoirs such as deep wells, ultra-deep wells and shale oil and gas.
Owner:LINYI XINHAI NEW MATERIAL CO LTD
In-situ growth coated catalytic proppant, and preparation method and application thereof
PendingCN122168266AImproves breakage resistanceSolve the problem of easy falling offFluid removalDrilling compositionPhysical chemistryOil viscosity
The application discloses in-situ growth coated catalytic proppant and a preparation method and application thereof, and the preparation method of the proppant comprises the following steps: dispersing a proppant matrix in a salt solution containing one or more transition metal precursors to form a solid-liquid suspension system; adding a precipitator to the suspension system to induce in-situ heterogeneous nucleation and growth of the metal precursors on the surface of the proppant matrix, thereby forming a precursor-coated proppant with a core-shell structure; and performing high-temperature calcination on the precursor-coated proppant to obtain the in-situ growth coated catalytic proppant. The application utilizes in-situ growth and high-temperature reactivity sintering technology to construct a firm high-entropy ceramic catalytic film on the surface of the proppant, thereby solving the problems that a traditional impregnated proppant coating is easy to fall off and has poor temperature resistance; meanwhile, the high-entropy effect and lattice oxygen vacancies are utilized to achieve a technical breakthrough that the proppant can efficiently catalyze thick oil viscosity reduction without an organic modifier.
Owner:DALIAN MARITIME UNIVERSITY
Modified fly ash ceramsite proppant and preparation method thereof, and combined proppant and preparation method and application thereof
The invention discloses a modified fly ash ceramsite proppant and a preparation method thereof, and a combined proppant and a preparation method and application thereof, and relates to the technical field of shale oil and gas fracturing. The modified fly ash ceramsite proppant comprises the following components which are mixed and granulated: fly ash, bauxite, barite powder, a recycled molecular sieve, a recycled mesoporous material, optional calcite powder and optional bentonite. The environment-friendly propping agent disclosed by the invention solves the problems of high production cost and application cost of the fracturing propping agent taking aluminum-containing minerals as main raw materials, and takes the harmless treatment of recyclable resources and industrial wastes in the whole industrial chain of the petrochemical industry into consideration, and the industrial wastes of the downstream of the oil refining and chemical industry are applied to the upstream petroleum fracturing propping agent.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
A method for improving the complexity of far-well fractures by staged fracturing of horizontal wells and its application
ActiveCN114198077Bincreased complexityIncrease the effective transformation volumeFluid removalSealing/packing
The present invention discloses a method for improving the complexity of far-well cracks by staged fracturing of horizontal wells and its application. Aiming at the problem of low complexity of far-well cracks formed by fracturing construction of unconventional oil and gas and dense sandstone oil and gas, the present invention uses different displacements, different viscosity slick water and glue combinations, different densities and different particle sizes of proppants, and adds floating agents and sinking agents, so that the upper part, lower part and end of the cracks can be effectively blocked, the net pressure at the far end of the main crack is increased, more branch cracks are formed at the far end of the main crack, and proppants with different particle sizes and different densities are used to effectively support the main cracks and branch cracks, so as to improve the volume and conductivity of crack transformation as a whole. Construction according to the proposed method can effectively improve the initial production and stable production after fracturing.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1
Insulin injection site positioning and sterilizing device
ActiveCN222341727UEasy to storeprevent leakageMedical applicatorsIntravenous devicesAlcoholInsulin injection
The utility model relates to the technical field of medical instruments, and discloses an insulin injection site positioning and sterilizing device which comprises a positioning patch, an adhesive layer is arranged at the top of the positioning patch, a sealing ring is fixedly connected to the top of the adhesive layer, an anti-permeation layer is fixedly connected to the inner wall of the sealing ring, and an anti-permeation layer is fixedly connected to the inner wall of the sealing ring. And the top of the anti-permeation layer is fixedly connected with an anti-skid layer. The utility model has the following advantages and effects: under the pressing, the soft bag is extruded to be broken, the internal alcohol enters the permeable cotton layer, the alcohol rapidly permeates into the permeable cotton layer, the sealing ring and the anti-permeable layer prevent the alcohol from permeating outwards, the soft cotton layer is soaked by the alcohol, the anti-permeable layer is pressed to disinfect the skin, and the sealing ring is torn off after disinfection, so that the skin can be disinfected. The adhesive layer is separated from the positioning patch, and the anti-permeation layer is taken down, so that the disinfected skin can be conveniently injected, alcohol is prevented from permeating and volatilizing outwards during disinfection, the disinfection effect is ensured, and the skin disinfection patch is more convenient to store and is more sterile and sanitary.
Owner:付强
A production process for enhancing absorbent core, diapers and pull-up pants
ActiveCN119139081Bpromote absorptionflow blockageAbsorbent padsBaby linensPolymer scienceSoluble Film
The invention relates to the field of disposable sanitary products, and provides a production process for an enhanced absorbent core, and diapers and pull-up pants, comprising the steps of conveying a first polymer carrier, feeding wood pulp, feeding SAP, feeding first water-absorbing particles, feeding second water-absorbing particles, and forming a core body. The formed core body has first water-absorbing particles and second water-absorbing particles inside and on the top, respectively. The first water-soluble films of the first water-absorbing particles and the second water-absorbing particles dissolve in water, and the water-absorbing inner layer is released to contact with water, so that water can be absorbed quickly, and the absorption speed and infiltration speed of urine can be greatly improved. The core body has a complex structure and does not need to be formed by multiple processes. It is only formed on a first polymer feeding device, which shortens the length of the equipment, greatly saves production costs, improves the accuracy of feeding at each material position, and solves the technical problem of slow urine absorption speed of the core.
Owner:QUANZHOU JIAHUA SANITARY PROD
Micro-bubble solid acid slow-release fracturing device and use method thereof
PendingCN119102575AImprove stabilityImprove pressure bearing capacityFluid removalMicro bubbleFracturing fluid
The invention belongs to the technical field of oil and gas development, and particularly relates to a microbubble solid acid slow-release fracturing device and a using method thereof.The microbubble solid acid slow-release fracturing device comprises an acid liquid tank, the output end of the acid liquid tank is in through connection with one end of a first conveying pipe, the other end of the first conveying pipe is in through connection with the input end of a low-pressure manifold, and a liquid supply pump is arranged on the first conveying pipe; the output end of the low-pressure manifold is connected with one end of a second conveying pipe in a penetrating mode, the other end of the second conveying pipe is connected with the input end of a fracturing truck in a penetrating mode, the output end of the fracturing truck is connected with one end of a third conveying pipe in a penetrating mode, and the other end of the third conveying pipe is connected with the input end of the high-pressure manifold in a penetrating mode. The mixed solution is subjected to foam particle size refining through the high-pressure micro-foam generator, the stability of foam can be remarkably improved, the stable foam can keep the form in a high-pressure environment and is not prone to breakage, and therefore the pressure bearing capacity of the fracturing fluid is enhanced.
Owner:SHAANXI DUINENG PETROLEUM ENGINEERING TECHNOLOGY SERVICES CO LTD