Patent application number | Description | Published |
20100149911 | METHOD FOR OPTIMIZING ACOUSTIC SOURCE ARRAY PERFORMANCE - A technique facilitates obtaining seismic data in a marine environment. An array of acoustic sources is deployed in a marine environment. The array can be utilized for creating acoustic pulses that facilitate the collection of data on subsea structures. The methodology enables optimization of acoustic source array performance to improve the collection of useful data during a seismic survey. | 06-17-2010 |
20100252356 | ATTENUATING OUT OF BAND ENERGY EMITTED FROM SEISMIC SOURCES - A method for attenuating out of band energy emitted from a seismic source used in a marine seismic survey. The method includes disposing the seismic source in a body of water and releasing a gas into a volume of water surrounding the seismic source. The released gas may be configured such that it displaces the volume of water surrounding the seismic source at a rate less than 2.9×10 | 10-07-2010 |
20110017543 | METHOD AND SYSTEM FOR SELECTING PARAMETERS OF A SEISMIC SOURCE ARRAY - A method for selecting parameters of a seismic source array comprising a plurality of source elements each having a notional source spectrum is described, the method comprising calculating a ghost response function of the array; calculating directivity effects of the array; and adjusting the parameters of the array such that the directivity effects of the array are compensated by the ghost response to minimize angular variation of a far field response in a predetermined frequency range. A method for determining a phase center of a seismic source array is also related, the method comprising calculating a far field spectrum of the array at predetermined spherical angles, and minimizing the phase difference between the farfield spectra within a predetermined frequency range by adjusting a vertical reference position from which the spherical angles are defined. | 01-27-2011 |
20110032795 | Method for Reducing Marine Source Volume While Maintaining Image Quality - A technique facilitates the acquisition of seismic data at a substantially reduced source volume. The methodology generally comprises conducting a seismic survey with seismic sources that have a reduced source volume to collect seismic data. The low frequency data which is lost due to the reduced source volume is replaced with data acquired from a complementary method, such as a receiver-side acquisition method. The two sets of data are combined to provide a comprehensive seismic survey image without requiring conventional seismic source volume. | 02-10-2011 |
20110122724 | POSITION DETERMINATION OF A SEISMIC SOURCE ARRAY - A method of obtaining information about the positions of sources in a marine seismic source array that has N seismic sources, including at least N | 05-26-2011 |
20110122725 | POSITION DETERMINATION OF A SEISMIC SOURCE ARRAY - A method of obtaining information about the positions of sources in a marine seismic source array, comprises: determining respective notional signatures for m selected seismic sources, where m05-26-2011 | |
20120087207 | PROCESSING SEISMIC DATA - A method of monitoring a marine seismic source array comprises, consequent to actuation of a seismic source array ( | 04-12-2012 |
20120090914 | Attenuating Out of Band Energy Emitted From Seismic Sources - A method for attenuating out of band energy emitted from a seismic source used in a marine seismic survey. The method includes disposing the seismic source in a body of water and releasing a gas into a volume of water surrounding the seismic source. The released gas may be configured such that it displaces the volume of water surrounding the seismic source at a rate less than 2.9×10 | 04-19-2012 |
20120095689 | PROCESSING SEISMIC DATA - A method of processing seismic data acquired consequent to actuation of a seismic source is described. The method comprises taking the result of the following process into account when processing the seismic data where the process comprises estimating the effect of uncertainty in the position and/or orientation of the seismic source relative to the measuring receiver on processing the seismic data by estimating a source wavefield from data acquired by a near-field measuring receiver and from a first parameter set including at least one parameter indicative of the position and/or orientation of the seismic source relative to the measuring receiver, varying the value of at least one parameter of the first parameter set, estimating the source wavefield from the data acquired by the measuring receiver and from the varied first parameter set and obtaining information about the uncertainty in the estimate of the source wavefield. | 04-19-2012 |
20120218860 | METHOD FOR OPTIMIZING ACOUSTIC SOURCE ARRAY PERFORMANCE - A technique facilitates obtaining seismic data in a marine environment. An array of acoustic sources is deployed in a marine environment. The array can be utilized for creating acoustic pulses that facilitate the collection of data on subsea structures. The methodology enables optimization of acoustic source array performance to improve the collection of useful data during a seismic survey. | 08-30-2012 |
20120218869 | Systems and Methods for Optimizing Low Frequency Output from Airgun Source Arrays - A technique provides a source design and method for increasing low frequency output of a marine source array. The approach comprises providing a plurality of airguns. At least some of the airguns are activated to generate an effective bubble energy. The effective bubble energy may be optimized through use, preparation and/or arrangement of the airguns. | 08-30-2012 |
20130279291 | ACQUIRING NEAR-ZERO OFFSET SURVEY DATA - To acquire near-zero offset survey data, a survey source and a first streamer attached to the survey source are provided, where the first streamer has at least one survey receiver. A second streamer separate from the survey source and the first streamer includes survey receivers. Near-zero offset data is measured using the at least one survey receiver of the first streamer. | 10-24-2013 |
20130333974 | SOURCE ACQUISITION WITH MULTIPLE FREQUENCY COMPONENTS - A seismic source array includes a first source and a second source. The first source has a first spectral output and the second source has a second spectral output different than the first spectral output. The first source has a first total volume different than a second total volume of the second source. | 12-19-2013 |
20140036625 | METHOD FOR OPTIMIZING ACOUSTIC SOURCE ARRAY PERFORMANCE - A technique facilitates obtaining seismic data in a marine environment. An array of acoustic sources is deployed in a marine environment. The array can be utilized for creating acoustic pulses that facilitate the collection of data on subsea structures. The methodology enables optimization of acoustic source array performance to improve the collection of useful data during a seismic survey. | 02-06-2014 |
20140060957 | METHOD AND SYSTEM FOR SELECTING PARAMETERS OF A SEISMIC SOURCE ARRAY - A method for selecting parameters of a seismic source array comprising a plurality of source elements each having a notional source spectrum is described, the method comprising calculating a ghost response function of the array; calculating directivity effects of the array; and adjusting the parameters of the array such that the directivity effects of the array are compensated by the ghost response to minimize angular variation of a far field response in a predetermined frequency range. A method for determining a phase center of a seismic source array is also related, the method comprising calculating a far field spectrum of the array at predetermined spherical angles, and minimizing the phase difference between the farfield spectra within a predetermined frequency range by adjusting a vertical reference position from which the spherical angles are defined. | 03-06-2014 |
20140278116 | FREQUENCY-SPARSE SEISMIC DATA ACQUISITION AND PROCESSING - A method includes receiving data representing measurements acquired by seismic sensors in response to energy that is produced by shots of a seismic source. The energy that is produced by the seismic source for each shot includes a plurality of discrete frequencies of discrete frequency bands that are within a frequency range of interest and are separated by at least one excluded frequency or frequency band. The data may be processed to determine at least one characteristic of a geologic structure. | 09-18-2014 |