摘要 |
To determine effect on a magnetic field caused by a lining structure (101) in a wellbore (100), an array (110) may be deployed into the wellbore lined with the lining structure. The array comprises a plurality of sensors including sensor A (20) configured to operate as a transmitter, sensor B (21, 54) configured to operate as either a transmitter or a receiver, and sensor C (55) configured to operate as a receiver. The array measures magnetic fields using sensor B as a receiver and sensor C in response to activation of sensor B as a transmitter and sensor A. A plurality of lining structure correction factors can be calculated based on the measured magnetic fields, based on the reciprocity of the sensors. |
申请人 |
SCHLUMBERGER CANADA LIMITED;SCHLUMBERGER TECHNOLOGY B.V.;PRAD RESEARCH AND DEVELOPMENT LIMITED;SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER HOLDINGS LIMITED;CLARK, BRIAN;MORRISON, FRANK;NICHOLS, EDWARD;ZHANG, HONG;ROSTHAL, RICHARD, A. |
发明人 |
CLARK, BRIAN;MORRISON, FRANK;NICHOLS, EDWARD;ZHANG, HONG;ROSTHAL, RICHARD, A. |