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257 results about "Early phase" patented technology

Placing method of self-simulating lateral-displacement horizontal well of super-low permeability tight reservoir

The invention provides a placing method of a self-simulating lateral-displacement horizontal well of a super-low permeability tight reservoir. The placing method comprises the following specific steps: determining a main force construction layer section; determining the positions of horizontal wells, water injection wells and artificial fractures; determining a well row direction of the horizontal wells; determining a well spacing between the horizontal wells; determining a distance between the rows of the horizontal wells; determining the length of each horizontal well; determining an offset distance of each water injection well; determining a length of each artificial fracture of each water injection well; and injecting water; scattered water injection in the past is changed into linear water injection, and in case of the same water injection amount, a water injection pressure is reduced so that secondary opening of a natural fracture generated in the water injection process can be avoided and a risk of fractured water flooding can be reduced; elastic solution gas drive in a region between the artificial fractures is converted to water drive and a fracture dominant direction of a local region is kept consistent so that early-phase water breakthrough can be avoided and an energy supplementing level can be increased. Row water injection displacement is formed through appropriate fracturing of the directional water injection wells, leading to the advantages that layered water injection can be realized and maximum draw-on in a longitudinal direction can be realized, compared with taking the horizontal wells as the water injection wells.
Owner:PETROCHINA CO LTD

Early recognition method of thermal power plant steam feed pump fault features

An early recognition method of thermal power plant steam feed pump fault features depend on the supervision information system (SIS) of a thermal power plant configured by a lot of thermal power plants, and through joining and processing of historical data of related measurement points of a steam feed pump set and the typical fault maintenance record of the steam feed pump set in an SIS database, the neural network classification method in the data mining algorithm is employed to realize the classification of the data features prior to the generation of the typical faults of the steam feed pump set so as to realize that a classification model can perform identification of fault features and perform timely alarm at the early phase when the fault features are represented in the data to select time to perform maintenance and avoid generation of accidents or unsafe events caused by device faults. The early recognition method of the thermal power plant steam feed pump fault features depends on the SIS, is convenient to use and high in practicality, finds new values for massive historical data stored by the SIS of the thermal power plant and explores new direction for the state maintenance of the steam feed pump set even the thermal power plant or more devices or systems.
Owner:西安西热电站信息技术有限公司

Continuous punching and nut riveting device for automobile door lock catch

The invention discloses a continuous punching and nut riveting device for an automobile door lock catch, which is used for continuously punching and riveting nuts on a material tape in the process of manufacturing the door lock catch. A die body consists of upper and lower die assemblies; an automatic nut conveyor connected with an automatic nut conveying electric control cabinet is arranged on front and rear sides of a lower die holder; when the material tape is subjected to early-phase blanking, chamfering and molding for riveting, the die is opened, the material tape is floated, the nut conveyor automatically feeds nuts of which the riveting surfaces face upwards, and puts the nuts into a riveting female die positioning groove below the material tape; an upper slide block descends, a riveting male die extrudes the material tape, and a lock catch plate material flows to a nut riveting taper available part so as to realize riveting. By adopting a mode of combining the automatic nut conveyor with a continuous nut riveting die, the production efficiency is greatly improved; the actions of automatically feeding and automatically conveying nuts are accurate; the material tape is accurately guided and positioned; and the produced workpieces are attractive in appearance, high in accuracy, high in riveting strength without disordered wires, stable in quality and environmentally-friendly; the labor intensity of a worker is greatly reduced; and the device can be used for riveting other products in different specifications and types.
Owner:XIANGYANG SUNRISE MACHINERY
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