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公开(公告)号：US3746102A
公开(公告)日：1973-07-17
申请号：US3746102D
申请日：1971-10-22
Applicant: DRESSER IND
CPC classification number: E21B45/00
Abstract: The rate of penetration of a drill bit and associated drill string used in drilling oil and gas wells is monitored and the resulting output signal activates an alarm whenever the rate of penetration exceeds a predetermined level. The depth of penetration is also monitored during the time that the rate of penetration is excessive and when the depth interval during such time exceeds a given number of feet, a second alarm is sounded. When the depth interval during the excessive rate of penetration is greater than a second predetermined number of feet, a signal is sent to the drawworks which takes the weight off the bit. Means are also provided for resetting the depth counting mechanisms whenever either of the depth interval circuits have counted to less than their predetermined capacity whenever the rate of penetration has diminished to a point which is less than the predetermined excessive level. In an alternative embodiment, predetermined time intervals are used instead of depth intervals.
Abstract translation: 监测在钻井油气井中使用的钻头和相关钻柱的穿透速率，并且每当穿透速率超过预定水平时，产生的输出信号就会激活报警。 渗透深度在渗透速率过大的时期也被监控，而在这种时间内的深度间隔超过给定的脚数时，会发出第二个警报。 当在过度的穿透速度期间的深度间隔大于第二预定的脚数时，信号被发送到取消重物的绞车。 当每次深度间隔电路都计数到小于其预定容量时，只要穿透速率降低到小于预定的过高水平的点，每个深度计数机构也被设置用于复位深度计数机构。 在替代实施例中，使用预定的时间间隔而不是深度间隔。
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公开(公告)号：US3740739A
公开(公告)日：1973-06-19
申请号：US3740739D
申请日：1971-11-30
Applicant: DRESSER IND
CPC classification number: E21B44/00 , E21B21/08 , G01F23/36 , G01P13/002
Abstract: A method and apparatus for monitoring at least two process parameters and giving distinctive warnings when each of the parameters varies beyond the desired limit and a separate and distinctive warning when two or more of the parameters vary beyond desired limits at the same time.
Abstract translation: 一种用于监测至少两个过程参数并且当每个参数变化超出期望极限并且当两个或更多个参数同时变化超出期望极限时单独且独特的警告的情况下，监视至少两个过程参数并给出独特警告的方法和装置。
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