公开(公告)号：US07453265B2

公开(公告)日：2008-11-18

申请号：US10549172

申请日：2004-03-19

Applicant: Svein Erling Johnstad ,  Fan-Nian Kong ,  Harald Westerdahl

Inventor： Svein Erling Johnstad ,  Fan-Nian Kong ,  Harald Westerdahl

IPC: G01V3/26 ,  G01V3/00

CPC classification number: E21B47/042 ,  G01F23/284 ,  G01V3/30 ,  Y02A90/344

Abstract: A device for monitoring the position of an oil/water contact (OWC, 22) between an oil-continuous fluid (2o) overlying a water-continuous fluid (2w) inside a casing pipe (7). The device includes a transmitter (5) for a generating an electromagnetic signal (ST) and the transmitter (5) is provided with electrical energy (GT) from a voltage signal generator (G). The transmitter (5) is arranged inside the casing pipe (7) in the oil-continuous fluid (2o) and above the oil-water contact (22). The electromagnetic wave signal (ST) partly propagates downwards from the transmitter (5), is partly reflected from the oil-water contact (22), and is partly reflected by the end of the casing, giving rise to an upward propagating, reflected electro-magnetic signal (SR). The device also includes a sensor (6) for detecting the reflected electromagnetic signal (SR), and the sensor (6) is also arranged above the oil-water contact (22), providing a sensor signal (RR) to a receiver (60) for receiving the sensor signal (RR) and further to an analyzing device (61) for analyzing the sensor signal (RR), e.g. with respect to two-way propagation time or amplitude in order to calculate an elevation level for the oil-water contact.

Abstract translation: 一种用于监测覆盖在套管（7）内的水连续流体（2w）的油连续流体（2o）之间的油/水接触（OWC，22）的位置的装置。 该装置包括用于产生电磁信号（ST）的发射器（5），并且从电压信号发生器（G）向发射器（5）提供电能（G T）。 发射器（5）布置在油连续流体（2o）内和油水接触件（22）上方的套管（7）内。 从发射器（5）向下部分地传播的电磁波信号（S SUB T T）部分地从油 - 水接触（22）反射，并且部分地被壳体的端部反射，给出 上升到向上传播的反射电磁信号（S SUB R S）。 该装置还包括用于检测反射电磁信号（S SUB R＆S）的传感器（6），传感器（6）也布置在油 - 水接触（22）上方，提供传感器信号 （R SUB R）连接到用于接收传感器信号（R SUB R）的接收器（60），并且还包括分析装置（61），用于分析传感器信号（R' SUB> R＆gt;），例如 相对于双向传播时间或幅度，以计算油 - 水接触的高程水平。