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1. 发明申请

US20120077718A1 COPOLYMER AND PREPARATION METHOD AND APPLICATION THEREOF 有权
标题翻译：共聚物及其制备方法及应用
公开(公告)号：US20120077718A1
公开(公告)日：2012-03-29
申请号：US13244102
申请日：2011-09-23
申请人： Xiaohua YANG , Lin Wang , Jiafen Li , Xiaolin Qian , Xianguang Wang , Sheng Li , Liwei Ren , Changming Su , Zhifa Wang , Guichuan Liu , Bingzhong Shi
发明人： Xiaohua YANG , Lin Wang , Jiafen Li , Xiaolin Qian , Xianguang Wang , Sheng Li , Liwei Ren , Changming Su , Zhifa Wang , Guichuan Liu , Bingzhong Shi
IPC分类号： C09K8/12 , C08F230/04
CPC分类号： C08F230/04 , C09K8/12
摘要： A copolymer and preparation method and application thereof are disclosed. The copolymer is random copolymer obtained from monomers consisting of acrylamide, acrylic acid, alkenyl sulfonate, 2-acrylamido-dodecyl sulfonate, p-styrene sulfonate or isoprene sulfonate and so on. The copolymer of present invention can be used as fluid loss additive and has good fluid loss properties, which would not make the drilling fluid thicken at high temperature of 200° C. and high salt conditions of saturated brine. It has a medium-pressure fluid loss after aging and rolling for 16 h at high temperature of 200° C., as measured in accordance with the American Petroleum Institute Standard Test at room temperature, and has good properties of high temperature-resisting and salt-resisting.
摘要翻译：公开了共聚物及其制备方法和应用。共聚物是由丙烯酰胺，丙烯酸，链烯基磺酸酯，2-丙烯酰氨基 - 十二烷基磺酸酯，对苯乙烯磺酸酯或异戊二烯磺酸酯等单体组成的无规共聚物。本发明的共聚物可用作流体损失添加剂，具有良好的流体损失性能，不会使钻井液在200℃的高温和饱和盐水的高盐条件下变稠。根据美国石油学会标准试验在室温下测量，在200℃的高温下老化和轧制16小时后，中压流体损失具有良好的耐高温和耐盐性能保留。

2. 发明申请

US20130027985A1 CONTROL INTEGRATED CIRCUIT OF A SWITCH POWER SUPPLY AND A SWITCH POWER SUPPLY USING THE SAME 有权
标题翻译：开关电源的控制集成电路和使用该开关电源的开关电源
公开(公告)号：US20130027985A1
公开(公告)日：2013-01-31
申请号：US13561354
申请日：2012-07-30
申请人： Wenqing WANG , Xiaohua YANG , Chuntian YU , Yuming FENG
发明人： Wenqing WANG , Xiaohua YANG , Chuntian YU , Yuming FENG
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M3/33523 , H02M2001/0003 , H02M2001/0035 , Y02B70/16
摘要： A control integrated circuit for controlling a switch power supply, including: a voltage collecting module, configured to collect a feedback voltage based on an output voltage of the switch power supply; an error amplifying module, configured to compare the feedback voltage with a reference voltage and generate an error voltage; a time collecting module, configured to obtain a degaussing time signal based on the feedback voltage; and a constant voltage and current module, configured to collect a peak current feedback signal of a switch transistor, generate a control signal based on the error voltage, the degaussing time signal and the peak current feedback signal, wherein the control signal is for controlling an operating frequency and a duty ratio of the switch transistor, and control the switch transistor according to the control signal.
摘要翻译：一种用于控制开关电源的控制集成电路，包括：电压采集模块，被配置为基于开关电源的输出电压收集反馈电压; 误差放大模块，被配置为将所述反馈电压与参考电压进行比较并产生误差电压; 时间采集模块，被配置为基于所述反馈电压获得消磁时间信号; 以及恒定电压和电流模块，被配置为收集开关晶体管的峰值电流反馈信号，基于所述误差电压，所述消磁时间信号和所述峰值电流反馈信号产生控制信号，其中所述控制信号用于控制开关晶体管的工作频率和占空比，并根据控制信号控制开关晶体管。

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