SYSTEM AND METHOD FOR HYDROCARBON RESERVOIR MONITORING USING CONTROLLED-SOURCE ELECTROMAGNETIC FIELDS

摘要

The system and method for real-time monitoring of a hydrocarbon reservoir ( 4 ) during extraction include an electro-magnetic source assembly ( 16 ) for transmitting a first plurality of electromagnetic fields. A plurality of seafloor antennae ( 30 a- 30 d) is distributed over an area of the seafloor ( 8 ) corresponding to the reservoir ( 4 ), where each antenna ( 30 a- 30 d) comprises recieves electrode array ( 30 a- 30 d) adapted for receiving a second plurality of electromagnetic fields and generating signals corresponding to the detected fields. A data logging processor receives the signals over time and stores data corresponding to the signals. Different combinations of the receiver electrode are used in combination with transmitter antennae for measuring vertical, radial and/or azimuthal fields. Transmission and detection of the fields can be performed continuously or at timed intervals during hydrocarbon extraction to estimate the rate and efficiency of extraction.