Patent application number | Description | Published |
20090243613 | Method and Apparatus for Utilizing Time Division Multiple Waveform Transmitting - A method and apparatus of constructing a signal for a controlled source electromagnetic survey is described. In one embodiment, a method is described that includes determining a first waveform and a second waveform, the first waveform and second waveform related to a combined frequency spectrum and bandwidth associated with a geophysical survey line. Then, a signal is constructed by sequencing the first waveform with the second waveform. This signal may be utilized in a transmitter, which may be pulled by a vessel along the geophysical survey line. | 10-01-2009 |
20100039114 | Method For Electroseismic Survey Design - A method for designing a controlled-source electromagnetic survey that will discriminate between a defined deep marginal-interest reservoir ( | 02-18-2010 |
20100233955 | METHOD FOR ELECTROMAGNETIC AIR-WAVE SUPPRESSION BY ACTIVE CANCELLATION AND SHIELDING - Method for reducing air wave and/or magnetotelluric noise in controlled source electromagnetic surveying by either shielding the source ( | 09-16-2010 |
20100238762 | Method and Apparatus For Evaluating Submarine Formations - A method and apparatus for evaluating submarine formations, such as geological formations located generally under a body of water. Multiple hydrofoils ( | 09-23-2010 |
20110087435 | Method For Electromagnetic Prospecting Waveform Design - A waveform design method is presented for controlled source electromagnetic surveying. A desired source spectrum ( | 04-14-2011 |
20110155389 | System and Method For Providing A Physical Property Model - There is provided a system and method for creating a physical property model representative of a physical property of a region. An exemplary method comprises transforming information from a model domain that represents the physical property model into simulated data in a data domain, the data domain comprising simulated data and measured data representative of a plurality of observations of the region. The exemplary method also comprises determining an areal misfit between the simulated data and the measured data representative of the plurality of observations of the region. The exemplary method additionally comprises performing an evaluation of the areal misfit based on known criteria. The exemplary method comprises adjusting data in the data domain or information in the model domain corresponding to a region in the model domain based on the evaluation of the areal misfit. | 06-30-2011 |
20110295507 | Method and Apparatus For Utilizing Time Division Multiple Waveform Transmitting - A method and apparatus of constructing a signal for a controlled source electromagnetic survey is described. In one embodiment, a method is described that includes determining a first waveform and a second waveform, the first waveform and second waveform related to a combined frequency spectrum and bandwidth associated with a geophysical survey line. Then, a signal is constructed by sequencing the first waveform with the second waveform. This signal may be utilized in a transmitter, which may be pulled by a vessel along the geophysical survey line. | 12-01-2011 |
20150160363 | PROCESSING METHODS FOR TIME DIVISION CSEM DATA - Method for inverting, in the frequency domain ( | 06-11-2015 |