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公开(公告)号：US5049743A
公开(公告)日：1991-09-17
申请号：US466237
申请日：1990-01-17
IPC分类号： G21H5/02
摘要： The present disclosure is directed to a method and apparatus for controllably injection a radioactive isotope tracer fluid into a fracture fluid, a manifold or mud flow line connected to a well. It is best used in measuring well stimulation procedures based on injection of tracer isotopes so that stimulation performance data can be obtained by gamma ray spectroscopic measuring instruments lowered in the well borehole after fracture. The present apparatus utilizes a tank supply of tracer fluid connected through a pump into the mud line wherein the pump drives a tachometer, and utilizes a CPU to respond to pumping rate measurements and adjust the pumped rate of the tracer fluid.
摘要翻译： 本公开涉及一种用于可控地将放射性同位素示踪剂流体注入断裂流体，连接到井的歧管或泥浆流动管线的方法和装置。 它最好用于测量基于注射示踪剂同位素的井刺激程序，从而可以通过在断裂后井眼中降低的γ射线光谱测量仪器获得刺激性能数据。 本装置利用通过泵连接到泥浆管线的示踪流体的罐供应器，其中泵驱动转速计，并且利用CPU来响应泵送速率测量并调节示踪流体的泵送速率。
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公开(公告)号：US06369715B2
公开(公告)日：2002-04-09
申请号：US09851476
申请日：2001-05-08
IPC分类号： G08B2100
CPC分类号： G01F23/0069 , B67D7/3209 , B67D7/362
摘要： A sensor monitoring system comprises a passive sensor, a monitored transmitter, a repeater, and a central receiver. The system provides easy installation, convenient calibration, and very low maintenance. The sensor and the monitored transmitter are battery powered and, in order the conserve battery power, the sensor and the monitored transmitter receive power only on command from their respective microprocessor.
摘要翻译： 传感器监控系统包括无源传感器，被监控的发射机，中继器和中央接收机。 该系统提供安装方便，校准方便，维护非常低。 传感器和受监控的变送器是电池供电的，为了节省电池电量，传感器和监控的变送器只能根据相应微处理器的指令接收电力。
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公开(公告)号：US06229448B1
公开(公告)日：2001-05-08
申请号：US09541353
申请日：2000-03-31
IPC分类号： G08B2100
CPC分类号： B67D7/3209 , B67D7/362 , G01F23/0069
摘要： A tank level monitoring and alarm system comprises a passive level switch, a transmitter, a repeater, and a receiver. It provides easy installation, convenient calibration, and very low maintenance. A mechanical level switch for the specific vessel is installed. The contacts of the level switch are connected to the transmitter. When the switch is activated, the transmitter immediately broadcasts an alarm signal to the receiver. A relay output at the receiver is either opened or closed thus activating the alarm or other device attached to it. The relay output may also connect to a control apparatus, such as a signal transmitter to provide for remote operation of such devices as valves.
摘要翻译： 液位计监控和报警系统包括无源液位开关，发射器，中继器和接收器。 它提供安装方便，校准方便，维护非常低。 安装特定容器的机械液位开关。 电平开关的触点连接到变送器。 当开关被激活时，发射器立即向接收器广播报警信号。 接收器上的继电器输出被打开或关闭，从而激活报警器或连接到其上的其他设备。 继电器输出还可以连接到诸如信号发射器的控制装置，以提供诸如阀门的这种装置的远程操作。
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