43results about How to "Fully expanded" patented technology

The invention discloses a method for slight fracture supporting, capable of increasing a fracture stabilization period. The method comprises the steps of (1) evaluation of a microstructure of reservoir rocks, (2) a first-stage injection phase, and (3) second-stage and third-stage injection phases. During the second step, (1) an ultralow-viscosity fracture solution carrying a micro-particle-diameter supporting agent is injected to communicate and extend natural fracture systems with micro scales, a low-viscosity fracture solution carrying a small-particle-diameter supporting agent is injected to communicate and extend natural fracture systems with large scales; a middle-viscosity fracture solution carrying a middle-particle-diameter supporting agent is injected to extend fracture systems with large scales; and (4) a high-viscosity fracture solution carrying a large-particle-diameter supporting agent is injected to extend fracture systems with the maximum scale. According to the invention, through fine evaluation of the microstructure of the reservoir rocks, alternate multi-stage injection, utilization of viscous fingering effects of various liquids with different viscosities, multi-scale sand adding and other methods, the fracture systems with the different scales within a full seam length scope of a main fracture can be fully expanded, extended and supported; and a "valid reshaping volume" of fractures and "supporting efficiency" of cracks are increased.

The invention belongs to the researching field of oil and gas reservoir exploitation techniques, and particularly relates to a multi-scale true-triaxial horizontal well hydrofracturing pressure bearing cylinder and a using method. The device is composed of a pressure bearing cylinder body, a telescopic pulling rod and a pulley base; the pressure bearing cylinder body is connected with the pulley base through a clamping groove, and the telescopic pulling rod is connected with the pulley base through a bolt; a passage hole is formed in the side wall of the pressure bearing cylinder body and used for penetrating out of a horizontal wellbore pre-buried in a testing rock sample, and the horizontal wellbore is connected with a hydrofacturing control system through a fracturing pipe; and steel pressure bearing plates are arranged on the three side free surfaces of the testing rock sample and make close contact with a confining pressure loading system. According to the multi-scale true-triaxial horizontal well hydrofracturing pressure bearing cylinder, manufacturing and operation is easy, the occupied area is small, measuring precision is high, the three-dimensional stress requirement is met, indoor simulation researching can be effectively conducted aiming at horizontal well hydrofracturing of rock reservoirs with different structures, the multi-scale true-triaxial horizontal well hydrofracturing pressure bearing cylinder is especially beneficial for researching influences of reservoir structures and rock mechanical properties on extension rules of cracks in the hydrpfracturing process of a multi-scale rock sample horizontal well, and a theoretical basis is provided for technique design and scheme optimization of hydrofracturing of normal or abnormal densified oil and gas reservoirs.

The invention discloses an LED (light emitting diode) display screen and a manufacture method thereof. A pixel module of the LED display screen is a single LED chip, and a gap between every two pixels can be effectively controlled, thus the definition of the LED display screen is improved. Meanwhile, the traditional upside-down mounting chip process is optimized to the process that after an electrode group is generated, structures of an electrode layer, an insulation layer and the like are generated, so that the thickness of a chip is effectively controlled, the traditional arrangement of a pair of electrodes is divided into a first electrode group and a second electrode group which are distributed in the corresponding area of a tube core, by adopting the structure, sufficient current expansion can be obtained, current is enabled to be uniformly distributed, a device is enabled to obtain excellent luminescent efficiency and uniform glaring rate, and the requirement that a chip size is further increased can be met.

The invention provides an SDN (Software Defined Network)-based path calculation method and device under multi-dimensional constraints, and the method comprises the steps: receiving a path calculationrequest of a service, and enabling a plurality of service scenes of the service to be available; wherein the path calculation request comprises a constraint type corresponding to the service and an evaluation type corresponding to the service; matching the constraint type with a preset multi-dimensional constraint model to obtain a multi-dimensional constraint set corresponding to the service; matching the evaluation type with a preset evaluation model to obtain an evaluation function corresponding to the service; and carrying out path calculation according to a multi-dimensional constraint set and an evaluation function. The problems that in the prior art, a service module of an SDN controller is coupled with a path calculation module, an SDN controller is low in operation efficiency dueto the fact that a path calculation module cannot serve as an independent component to be used for other business scenes and path calculation performance is bottleneck due to the fact that constraintsused in the path calculation process are fixed are solved.

The invention provides a parallel relatively prime array space-time expansion-based two-dimensional direction of arrival estimation method. The method comprises the steps of selecting and adding a special reference array element so that mutual correlation is performed o the reference array element by a sub-array of a relatively prime array to obtain correlation functions of different time lag andtake the self-correlation function as new receiving data; and performing pseudo-sampling to obtain a pseudo-data matrix by the new receiving data, vectorizing the pseudo-data matrix, converting a problem to a sparse optimization problem, and performing solving to obtain two-dimensional direction of arrival of a signal. The time-space information of the receiving data is fully utilized, a virtual array is expanded to the maximum extent, larger array aperture and higher freedom are achieved, and the direction of arrival estimation performance is better.

The invention discloses a light emitting diode epitaxial wafer and a manufacturing method therefor and belongs to the field of light emitting diodes. The light emitting diode epitaxial wafer comprises a substrate, and a non-doped layer, an N-type layer, an N-type current expansion layer, a multi-quantum well layer and a P-type layer which are formed on the substrate in sequence. The N-type current expansion layer comprises an AlGaN/n-GaN superlattice structure. The content of Al in an AlGaN sublayer of the AlGaN/n-GaN superlattice structure is increased layer by layer in the growth direction of the epitaxial wafer and is from 10% to 80%.

The invention discloses a light-emitting diode with a modulation-doped current expansion layer. The light-emitting diode comprises a substrate. A first electrode is connected below the substrate. A first-type current expansion layer, a first limiting layer, an active layer, a second-type limiting layer, a second-type current expansion layer and a second electrode are sequentially connected above the substrate. X delta-doped layers are connected at intervals along the growing direction of the second-type current expansion layer, wherein X is more than or equal to 1 and is less than or equal to 50. Preferably, the thickness of the delta-doped layers is less than or equal to 1nm. The light-emitting diode with the modulation-doped current expansion layer has the advantages that the transverse conductivity of the current expansion layer can be improved, the forward working voltage of the light-emitting diode is effectively reduced and the photovoltaic conversion efficiency of the light-emitting diode is improved.

The invention relates to a cyclic hydrodynamic pipeline fracture simulation experiment apparatus, which comprises an experiment pipe section, a left side connecting pipe section, a rear side connecting pipe section, a right side connecting pipe section, an electric circulation pump, a pressurizing system and a DIC test system, wherein the experiment pipe section, the left side connecting pipe section, the electric circulation pump, the rear side connecting pipe section and the right side connecting pipe section are sequentially connected through flanges in a head-to-tail connection manner, thepressurizing system is arranged on the right side of the right side connecting pipe section, and the DIC test system is placed on the front side of the experiment pipe section. Compared to the apparatus in the prior art, the apparatus of the present invention has the following advantages that the expansion condition of the pipeline crack under the action of the internal fluid can be completely reproduced, the internal pressure and the crack tip state are the same as the actual working conditions, the size error is reduced, the reliability of the data is ensured, the flow rates of different fluids are changed by using the electric circulation pump in the experiment so as to achieve the research on the influence of the flow rate on the pipeline crack expansion, and the fluid pressure is changed by using the electric booster pump in the experiment so as to achieve the research on the influence of the pressure on the pipeline crack expansion.

The invention discloses a structure of a light emitting diode (LED) chip and a manufacturing method of the LED chip. An electrode of the LED chip comprises a first electrode group and a second electrode group, wherein the electrodes of the first electrode group are uniformly distributed on a tube core in a row way, and is contacted with the corresponding area of the tube core; the second electrode group is distributed on the vertex of a regular hexagon which is centered by the first electrode group, the full current expanding can be obtained by such structure, so that the current is uniformly distributed in the chip, and the device is obtained with good luminous efficiency and uniform light extracting rate, thereby meeting the requirement of further increasing the chip size.

The invention discloses a portable high-position garbage can. The portable high-position garbage can comprises a can body and a garbage bag arranged on the can body in a sleeving mode; a cover plate is hinged to one end of the top of the can body; rolling wheels are pivoted to the bottom of the can body; an opening is formed in the side wall of one side surface of the can body; a turning cover matched with the opening in size is pivoted to the lower end of the opening; the upper end of the turning cover is movably connected with the upper part of the can body through a clamping piece; a supporting rotating plate is arranged at the bottom of the inner wall of the can body; and the end, close to one side of the turning cover, of the supporting rotating plate is connected with the end of theturning cover through an arc-shaped block. The garbage can is provided with the supporting rotating plate and the turning cover, so that the filled garbage bag is taken out of the side direction of the garbage can, meanwhile, the supporting rotating plate can apply force to the garbage bag from the lower side to the inclined upper side and push the garbage bag out of the garbage can, and the situation that the garbage bag is damaged due to the fact that the garbage bag is lifted from top to bottom conventionally is avoided. Meanwhile, the supporting rotating plate and the turning cover are improved, the garbage bag is arranged on the garbage can from bottom to top in a sleeving mode through arrangement of the limiting piece, the garbage bag which is arranged in a sleeving mode is unfoldedmore completely, and the garbage bag is prevented from being suspended in the garbage can.

The invention provides a buckwheat seedling planting and cultivating method includes the steps: 1) selecting full buckwheat seeds, and soaking the selected buckwheat seeds in warm water for 20-30 hours; 2) removing impurities in the soaked seeds, drying the seeds on a screen net, transferring the dried seeds into a greenhouse, and storing the seeds; 3) spraying organic fertilizers to the screen net once every 8-10 hours until the surfaces of the seeds are moisturized, and controlling daily illuminating time to be 18-20 hours; 4) cultivating the seedlings when the height of the seedlings is 10-25cm. By the planting and cultivating method, buckwheat seedlings can absorb nutrient components in the growing process, growth of the seedlings is facilitated, and the method can be further popularized and applied in actual agricultural production.

Provided is a bonding composition which can achieve high bonding strength by bonding at a relatively low temperature and which can suppress formation of fillets while maintaining suitable spreading atan interface to be bonded. The present invention relates to a bonding composition which contains inorganic particles as a primary component and an organic component as a secondary component, and which is characterized in that the viscosity decreases upon a rise in temperature and inorganic particles are sintered to each other following the decrease in viscosity. The viscosity at 25 DEG C of thisbonding composition is preferably 10-50 Pa*s at a shear rate of 10 s<-1>.

The invention discloses a dough fermentation stirrer, and belongs to the field of intelligent household appliances. The dough fermentation stirrer comprises a mounting seat, and a shell is arranged at the upper end part of the mounting seat; a bottom plate is arranged at the upper end part of the third rotating shaft; the lower end of the third rotating shaft is connected with a first rotating shaft through a first gear set, the right end of the first rotating shaft is connected with a second rotating shaft through a second gear set, the upper end of the second rotating shaft is connected with a fourth rotating shaft through a transmission mechanism, and a telescopic rod is arranged on the fourth rotating shaft. The lower end of the fourth rotating shaft is connected with a connecting plate through a first spring, stirring teeth are annularly hinged to the lower end of the connecting plate, and teeth are arranged on the stirring teeth; the fourth rotating shaft is connected with the guide barrel through a bearing. The invention not only can improve the flour stirring efficiency, but also can simulate manual operation, is soft in hand feeling and good in quality, enables gluten to be fully expanded, and improves the quality of dough.