METHOD TO MAINTAIN TOWED DIPOLE SOURCE ORIENTATION

Apparatus and method for a steerable horizontal electric dipole source system for underwater deployment as a moving source in electromagnetic surveying of subsurface regions for hydrocarbons. Position locating sensors (195) are placed near each electrode (26, 27), and means (197, 198) are provided f...

Full description

Saved in:
Bibliographic Details
Main Authors FIELDING, BRIAN J, SUMMERFIELD, PHILIP J, GALE, LARRY S
Format Patent
LanguageEnglish
French
Published 01.12.2015
Subjects
DETECTING MASSES OR OBJECTS
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
EQUIPMENT FOR SHIPPING
FIXED CONSTRUCTIONS
GEOPHYSICS
GRAVITATIONAL MEASUREMENTS
MEASURING
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
PERFORMING OPERATIONS
PHYSICS
RELATED EQUIPMENT
SHIPS OR OTHER WATERBORNE VESSELS
TESTING
TRANSPORTING
Online AccessGet full text

Cover

More Information
Summary:Apparatus and method for a steerable horizontal electric dipole source system for underwater deployment as a moving source in electromagnetic surveying of subsurface regions for hydrocarbons. Position locating sensors (195) are placed near each electrode (26, 27), and means (197, 198) are provided for correcting the electrodes to be at the same elevation with azimuth aligned with the source tow line (11) and the electrode mid-point positioned over the source tow line, based on instantaneous location information from the sensors. The streamer (28) connecting the electrodes may also be monitored for shape by sensors, with corrections made by lateral and vertical control means disclosed herein. The invention can be applied to any marine streamer used in geophysical surveys, including a towed streamer (191) of electromagnetic or seismic receivers (192).
Bibliography:Application Number: CA20072656226