| Patent application number | Description | Published |
|---|
| 20090091329 | ELECTRIC FIELD SENSOR FOR MARINE ENVIRONMENTS - A sensor (S) for marine measurements of an electric field, the sensor (S) including at least two electrodes ( | 04-09-2009 |
| 20090219029 | METHOD FOR HYDROCARBON RESERVOIR MAPPING AND APPARATUS FOR USE WHEN PERFORMING THE METHOD - A method is proposed for a marine electromagnetic survey based on the TM mode, for the purpose of prospecting for and detecting subsurface hydrocarbon reservoirs. The method includes an electromagnetic field source ( | 09-03-2009 |
| 20100085055 | METHOD OF MAPPING HYDROCARBON RESERVOIRS IN SHALLOW WATERS AND ALSO AN APPARATUS FOR USE WHEN PRACTISING THE METHOD - A system for marine electromagnetic surveying of hydrocarbon reservoirs is proposed. The system proposed is characterized by high sensitivity to targets containing hydrocarbons and an ability to work in shallow and deep waters. The system includes a transmitter setting up current pulses in water ( | 04-08-2010 |
| 20100271029 | Method and Device for Induced Polarization Mapping of Submarine Hydrocarbon Reservoirs - This invention is directed toward an electromagnetic surveying method based on detection of induced polarization effect and evaluation of its characteristics for mapping marine hydrocarbon targets. The method includes the steps of vertical deployment in a body of water of at least one electric wire which forms an electromagnetic transmitter which emits electromagnetic energy arranged to excite an electromagnetic field in the body of water and underlying medium, the same wire being used as a receiver for measurements of the vertical component of the electric field; (b) providing survey data as the spatial distribution of the vertical component of the electric field and the medium response in the form of apparent resistivity versus time in the body of water; (c) performing a space/time analysis of the vertical component of the electric field and response with the purpose of detecting induced polarization effect and determine its intensity and relaxation times; and (d) mapping the anomalous zones described by the characteristics perspective of the induced polarization for the exploration of an underground hydrocarbon reservoir. There is also described equipment for use when practising the method. | 10-28-2010 |
| 20110137628 | METHOD FOR TRANSFORMATION AND IMAGING OF ELECTROMAGNETIC SURVEY DATA FOR SUBMARINE HYDROCARBON RESERVOIRS - A method for processing, transforming and mapping subsea survey data arranged to detect earth formations including hydrocarbon reservoirs is proposed. The method differs from known methods by including a real configuration of the sounding system and parameters for a given area of a reference model and by a method for processing and transforming the measured signals. | 06-09-2011 |
| 20120038362 | Method and Apparatus for Offshore Hydrocarbon Electromagnetic Prospecting based on Circulation of Magnetic Field Derivative Measurements - A system for offshore hydrocarbon electromagnetic prospecting is described. The system includes a transmitter generating electromagnetic energy and injecting an electrical current into a flooded vertical cable. The circulated induced vertical current time derivative's response generated by this current in the medium is measured by a circular chain of magnetometers. The measured response which is sensitive to the resistivity of targets is proposed to be used to search for and identify hydrocarbons reservoirs. | 02-16-2012 |
| 20120059585 | Method and Apparatus for Offshore Hydrocarbon Electromagnetic Prospecting Based on Total Magnetic Field Measurements - A system for offshore hydrocarbon electromagnetic prospecting is described. The system includes a transmitter generating electromagnetic energy and injecting an electrical current into a flooded vertical cable. Electromagnetic fields generated by this current in the medium are measured by total field magnetometers or gradiometers. The measured response, which is sensitive to the resistivity of targets, is used to search for and identify hydrocarbon reservoirs. A method for offshore hydrocarbon electromagnetic prospecting is described as well. | 03-08-2012 |
