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    • 5. 发明申请
    • Powergating method and apparatus
    • 电源起动方法和装置
    • US20060022742A1
    • 2006-02-02
    • US10900505
    • 2004-07-28
    • Michael ParrisKim Hardee
    • Michael ParrisKim Hardee
    • H03K17/687
    • H03K19/0016
    • A powergating circuit includes a P-channel transistor with a source coupled to VCC, a gate for receiving a first boosted or non-boosted powergating control signal, and a drain forming the internal switched VCC power supply. An N-channel transistor has a source coupled to VSS, a gate for receiving a second boosted or non-boosted powergating control signal, and a drain forming the internal switched VSS power supply. The powergating circuit further includes a circuit for forcing the first and second internal power supply voltages to a mid-point reference voltage during the standby mode.
    • 电源门控电路包括具有耦合到VCC的源极的P沟道晶体管,用于接收第一升压或非升压功率门控控制信号的栅极和形成内部开关VCC电源的漏极。 N沟道晶体管具有耦合到VSS的源极,用于接收第二升压或非升压的功率门控控制信号的栅极以及形成内部开关VSS电源的漏极。 电源门电路还包括用于在待机模式期间将第一和第二内部电源电压强制为中点参考电压的电路。
    • 8. 发明申请
    • Method and composition of preparing polymeric fracturing fluids
    • 制备聚合物压裂液的方法和组成
    • US20070114035A1
    • 2007-05-24
    • US11285440
    • 2005-11-22
    • Michael ParrisIsmail El Kholy
    • Michael ParrisIsmail El Kholy
    • E21B43/267E21B43/26
    • C09K8/68C09K8/685C09K8/88C09K8/887
    • In the presence of certain polyols, a guar gum or similar polysaccharide thickener solution is boron crosslinked before achievement of complete hydration of the thickener, without compromising the viscosity level achieved in a fracturing fluid by the time it is pumped into the wellbore and fractures the subterranean formation adjacent the wellbore. Methods continuously involve hydrating a polysaccharide thickener to an extent of 10% to 75%, but less than full hydration. Before 75% hydration is exceeded, a boron crosslinker is added. Upon addition of the boron crosslinker, the fluid is injected into the wellbore to stimulate hydrocarbon production. Because less time is needed for hydration, well site mixing equipment is down-sized smaller to achieve better efficiency and cost savings.
    • 在存在某些多元醇的情况下,瓜尔胶或类似的多糖增稠剂溶液在实现增稠剂的完全水合之前是交联的硼,而不损害在压裂液被泵入井筒中时达到的粘度水平,并破裂了地下 形成在井眼附近。 方法连续地将多糖增稠剂水合至10%至75%,但不足于完全水合。 在超过75%水合之前,加入硼交联剂。 加入硼交联剂后,将流体注入井眼以刺激烃的生产。 由于水合时间较短,井场混合设备规模较小,可实现更好的效率和成本节约。