公开(公告)号：US06272915B1

公开(公告)日：2001-08-14

申请号：US09298680

申请日：1999-04-23

Applicant: Richard J. Kostelnicek ,  Peter W. Reittinger

Inventor： Richard J. Kostelnicek ,  Peter W. Reittinger

IPC: E21B4704

CPC classification number: G01N27/02 ,  E21B47/042 ,  E21B47/102 ,  G01F1/74 ,  G01N27/221 ,  G01N33/2823

Abstract: A system for evaluating multiphase fluid flow in a wellbore. Two distinct AC signals are injected into a fluid. One AC signal originates from a transmitter electrode in ohmic contact with the fluid, and the other AC signal originates from a transmitter electrode capacitively coupled to the fluid. The geometric factors between the electrode pairs are selected to distinguish between different constituents within the wellbore fluids. The output electrical impedance of the ohmic transmitter is low so that the AC signal from the capacitive transmitter is shunted to signal ground in electrically conductive fluids. A single detector can measure the fraction of electrically conductive water covering the detector electrode as well as the dielectric constant of an oil and gas mixture. Arrays of such detector electrodes can measure the holdups and velocities of the constituent fluids in a flowing multiphase fluid.

Abstract translation: 一种用于评估井眼中多相流体流动的系统。 将两个不同的AC信号注入流体。 一个AC信号源于与流体欧姆接触的发射器电极，另一个AC信号来自与电容耦合到流体的发射器电极。 选择电极对之间的几何因子以区分井筒流体内的不同组分。 欧姆发射器的输出电阻较低，使得来自电容式发射器的交流信号被分流以在导电流体中信号接地。 单个检测器可以测量覆盖检测器电极的导电水的分数以及油和气体混合物的介电常数。 这种检测器电极的阵列可以测量流动的多相流体中的组成流体的滞留和速度。

公开(公告)号：US5677631A

公开(公告)日：1997-10-14

申请号：US660481

申请日：1996-06-07

Applicant: Peter W. Reittinger ,  James T. Cernosek

Inventor： Peter W. Reittinger ,  James T. Cernosek

IPC: E21B47/10 ,  E21B49/08 ,  G01V3/30 ,  E21B49/00 ,  G01N22/00

CPC classification number: E21B49/08 ,  E21B47/102 ,  G01V3/30 ,  E21B2049/085

Abstract: A two-port, coaxial, waveguide flowline sensor for transmitting TEM mode electromagnetic radio frequency signals through borehole fluids flowing through a longitudinal flowline cavity of the waveguide. The waveguide flowline sensor responds to changes in the conductivity, dielectric constant, and state of the fluid at high borehole temperatures and pressures. The sensitivity of the sensor is enhanced by impedance mismatches between two feedthrough waveguides comprising the ports of the sensor, and a flowline cavity waveguide.

Abstract translation: 一种双端口同轴波导流线传感器，用于通过流过波导的纵向流线腔的井眼流体​​传输TEM模式的电磁射频信号。 波导流线传感器响应于在高钻孔温度和压力下的流体的导电性，介电常数和状态的变化。 传感器的灵敏度通过包括传感器端口的两条馈通波导与流线型腔波导之间的阻抗失配来增强。