DRILLING CONTROL SYSTEM AND METHOD
    4.
    发明申请
    DRILLING CONTROL SYSTEM AND METHOD 有权
    钻井控制系统及方法

    公开(公告)号:US20120255778A1

    公开(公告)日:2012-10-11

    申请号:US13293725

    申请日:2011-11-10

    IPC分类号: E21B44/00 G06F17/50

    CPC分类号: E21B44/04 E21B47/0006

    摘要: A method of operating a drill string includes receiving signals indicative of rotation of a bottom hole assembly (BHA) of the drill string; receiving signals indicative of the torque experience by the BHA; determining from the received signals an average slipping torque and a maximum sticking torque; determining a friction ratio based on the maximum sticking torque and the average slipping torque; and generating an indication that the friction ratio exceeds a limit.

    摘要翻译: 操作钻柱的方法包括接收指示钻柱的底孔组件(BHA)旋转的信号; 接收指示BHA转矩经验的信号; 从接收到的信号确定平均滑动扭矩和最大粘着力矩; 基于最大粘着扭矩和平均滑动力矩确定摩擦比; 并产生摩擦比超过极限的指示。

    Antimicrobial mixtures
    7.
    发明授权
    Antimicrobial mixtures 失效
    抗微生物混合物

    公开(公告)号:US5539001A

    公开(公告)日:1996-07-23

    申请号:US182170

    申请日:1994-02-15

    摘要: Antimicrobial mixtures containing specific antimicrobial diols, e.g. 1,2-dodecanediol, and specific aromatic alcohols, e.g. phenylethyl alcohol or hydrocinnamic alcohol, are provided. Such mixtures with a weight ratio of diol to aromatic alcohol of 9:1 to 1:9 have been found to exhibit a synergistic effect, i.e. a high antimicrobial activity which cannot be explained by an additive effect of the very low-activity components. Such mixtures are useful in the disinfection of hard surfaces, in the production of disinfectant cleaning preparations and in the preservation of water-based preparations of microbially degradable substances.

    摘要翻译: PCT No.PCT / EP92 / 01618 Sec。 371日期1994年2月15日 102(e)日期1994年2月15日PCT提交1992年7月16日PCT公布。 第WO93 / 01714号公报 日期:1993年2月4日含有特异性抗微生物剂的抗微生物混合物,例如 1,2-十二烷二醇和特定芳族醇,例如 苯乙醇或氢化肉桂醇。 已经发现这种二醇与芳族醇的重量比为9:1至1:9的混合物表现出协同效应,即不能通过非常低活性组分的加成效应来解释的高抗微生物活性。 这样的混合物可用于消毒硬表面,生产消毒剂清​​洁制剂和保存微生物降解物质的水性制剂。