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    • 3. 发明授权
    • Method and apparatus for drain switching with replication loop for fast LED turn on time
    • 用于快速LED导通的复制环路的漏极切换方法和装置
    • US09024677B2
    • 2015-05-05
    • US13535015
    • 2012-06-27
    • Hua GuanEric B. ZeiselQi Lou
    • Hua GuanEric B. ZeiselQi Lou
    • H03K17/042G05F1/10
    • H03K17/04206
    • A method and apparatus for current drain switching with a replica loop. The method comprises the steps of: matching a voltage across a current sense resistor with a voltage created by a reference current across a matched reference resistor; replicating an operating point of an output transistor using a scaled matched replica of the output transistor and the current sense resistor. The method then shifts a feedback voltage from the output sense resistor to the matched replica sensor and shifts the output of a gate from an output transistor to the replica transistor. A first switch is then actuated in order to preserve the gate charge of the output transistor. A second switch is actuated to sample and hold a drain voltage in the buffer in order to bias the drain of the replica transistor. A third switch is then activated to stop the output current.
    • 一种具有复制环路的电流漏极切换的方法和装置。 该方法包括以下步骤:将电流检测电阻器两端的电压与参考电流产生的电压匹配跨匹配参考电阻; 使用输出晶体管和电流检测电阻器的缩放匹配的副本复制输出晶体管的工作点。 该方法然后将反馈电压从输出检测电阻器移动到匹配的复制传感器,并将栅极的输出从输出晶体管移位到复制晶体管。 然后启动第一开关以便保持输出晶体管的栅极电荷。 致动第二开关以对缓冲器中的漏极电压进行采样和保持,以便偏置复制晶体管的漏极。 然后激活第三个开关以停止输出电流。
    • 4. 发明授权
    • Method of enhancing adsorption of an inhibitor onto a wellbore region
    • 增强抑制剂吸附在井眼区域上的方法
    • US08381811B2
    • 2013-02-26
    • US12682950
    • 2008-10-15
    • Richard KeatchHua Guan
    • Richard KeatchHua Guan
    • E21B43/00E21B47/00C09K8/528
    • C09K8/54C02F5/08C02F2103/10C09K8/528
    • The instant disclosure is directed to a method of enhancing adsorption of a salt inhibitor onto a wellbore region, wherein the method comprises preconditioning the wellbore region, emplacing the salt inhibitor into the wellbore region, and shutting in the wellbore region for a period of time to at least initiate adsorption of the salt inhibitor onto the wellbore region. The salt inhibitor comprises an at least partially water soluble compound comprising a Group 3 to Group 15 metal and/or an at least partially water soluble compound having any one of the formulae: wherein X is O or S; and R1, R2, R3, R4, and when present, R5 and/or R6 each independently comprise an organic or an inorganic functional group.
    • 本公开涉及一种增强盐抑制剂在井筒区域上的吸附的方法,其中所述方法包括预处理井眼区域,将盐抑制剂放置到井筒区域中,并将井眼区域关闭一段时间 至少开始将盐抑制剂吸附到井筒区域上。 盐抑制剂包含至少部分水溶性化合物,其包含第3组至第15族金属和/或具有下式之一的至少部分水溶性化合物:其中X为O或S; 和R 1,R 2,R 3,R 4,并且当存在时,R 5和/或R 6各自独立地包含有机或无机官能团。
    • 9. 发明申请
    • METHOD OF INHIBITING SALT PRECIPITATION FROM AQUEOUS STREAMS
    • 抑制水质条件下盐析的方法
    • US20110024366A1
    • 2011-02-03
    • US12738195
    • 2008-10-15
    • Richard KeatchHua Guan
    • Richard KeatchHua Guan
    • C02F1/68G01L13/02
    • C09K8/54C02F5/08C02F2103/10C09K8/528
    • The instant disclosure is directed to a method of reducing the amount of crystallized salt in an aqueous stream comprises the steps of contacting the aqueous stream comprising one or more salts with an amount of a salt inhibitor sufficient to reduce the amount of crystallized salt in the aqueous stream under a set of conditions, and/or to reduce the amount of salt deposition from the aqueous stream that would otherwise occur from the aqueous stream under the essentially identical conditions, wherein the salt inhibitor comprises an at least partially water soluble compound comprising a Group 3 to Group 15 metal and/or an at least partially water soluble compound having any one of the formulae (I), (II), (III): wherein X is O or S; and R1, R2, R3, R4, and when present, R5 and/or R6 each independently comprise an organic or an inorganic functional group. A testing rig is also disclosed.
    • 本公开涉及减少水流中结晶盐的量的方法,包括以下步骤:将含有一种或多种盐的水流与一定量的盐抑制剂接触,所述盐抑制剂足以减少水中结晶盐的量 在一组条件下,和/或减少在基本相同的条件下从含水物流发生的含水流中的盐沉积量,其中所述盐抑制剂包含至少部分水溶性化合物,其包含基团 3至15族金属和/或具有式(I),(II),(III)中任一项的至少部分水溶性化合物:其中X为O或S; 和R 1,R 2,R 3,R 4,并且当存在时,R 5和/或R 6各自独立地包含有机或无机官能团。 还公开了一种测试台。
    • 10. 发明申请
    • METHOD OF ENHANCING ADSORPTION OF AN INHIBITOR ONTO A WELLBORE REGION
    • 将增强剂吸收到井眼区域的方法
    • US20110017460A1
    • 2011-01-27
    • US12682950
    • 2008-10-15
    • Richard KeatchHua Guan
    • Richard KeatchHua Guan
    • E21B43/00
    • C09K8/54C02F5/08C02F2103/10C09K8/528
    • The instant disclosure is directed to a method of enhancing adsorption of a salt inhibitor onto a wellbore region, wherein the method comprises preconditioning the wellbore region, emplacing the salt inhibitor into the wellbore region, and shutting in the wellbore region for a period of time to at least initiate adsorption of the salt inhibitor onto the wellbore region. The salt inhibitor comprises an at least partially water soluble compound comprising a Group 3 to Group 15 metal and/or an at least partially water soluble compound having any one of the formulae: wherein X is O or S; and R1, R2, R3, R4, and when present, R5 and/or R6 each independently comprise an organic or an inorganic functional group.
    • 本公开涉及一种增强盐抑制剂在井筒区域上的吸附的方法,其中所述方法包括预处理井眼区域,将盐抑制剂放置到井筒区域中,并将井眼区域关闭一段时间 至少开始将盐抑制剂吸附到井筒区域上。 盐抑制剂包含至少部分水溶性化合物,其包含第3组至第15族金属和/或具有下式之一的至少部分水溶性化合物:其中X为O或S; 和R 1,R 2,R 3,R 4,并且当存在时,R 5和/或R 6各自独立地包含有机或无机官能团。